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May 12th, 2007
v1.17 -- Cryptography Research Inc. contributed another small volley of patches, one to fix __WCHAR_DEFINED__ for BSD platforms,
another to silence MSVC warnings.
-- Added LTC_XCBC_PURE to XCBC mode which lets you use it in three-key mode.
-- [CRI] Added libtomcrypt.dsp for Visual C++ users.
-- [CRI] Added more functions for manipulating the ECC fixed point cache (including saving and loading)
-- [CRI] Modified ecc_make_key() to always produce keys smaller than base point order, for standards-compliance
-- Elliptic Semiconductor contributed XTS chaining mode to the cipher suite (subsequently optimized it)
-- Fixed xcbc_init() keylen when using single key mode.
-- Bruce Fortune pointed out a typo in the hmac_process() description in the manual. Fixed.
-- Added variable width counter support to CTR mode
-- Fixed CMAC (aka OMAC) when using 64-bit block ciphers and LTC_FAST ... my bad.
-- Fixed bug in ecc_is_valid() that would basically always return true
-- renamed a lot of macros to add the LTC_ prefix [e.g. RIJNDAEL => LTC_RIJNDAEL]
December 16th, 2006
v1.16 -- Brian Gladman pointed out that a recent change to GCM broke how the IV was handled. Currently the code complies against his test vectors
so the code should be considered frozen now.
-- Trevor from Cryptography Research Inc. submitted patches to convert the ECC code to be generic allowing curve parameters to be submitted
at runtime.
-- Fixed various doxygen comments
-- Added UTF8 support to the ASN1 code
-- Fixed STOREXXH macros for x86 platforms (Fix found at Elliptic Inc.)
-- Added makefile.unix which is BSD compatible, you have to manually tweak it since well I don't use it normally
-- removed a few lingering memcpy's
-- Fixed memory free errors in ecc_sign_hash() that can arise if the mp_init_multi() fails
-- Fixed incorrect return value in pkcs_1_pss_decode() which would correctly set res to 0 (indicating an incorrect signature) but
would return CRYPT_OK to the caller
-- ltc_ecc_mulmod() could leak memory if mp_init(&mu) failed, fixed. Would you believe that ltc_ecc_mulmod_timing() had the same
bug? Also fixed. :-)
-- Added Shamir's trick to the ECC side (defined as LTC_ECC_SHAMIR, enabled by default), gets ~1.34x to ~1.40x faster ECC verifications
-- Added Brian's vector #46 to the GCM code. It catches the ctr counter error from v1.15. Originally I was going to add all of his vectors,
but they're not as easy to parse and I got a lot of other things to do. Regression!
-- Various other small fixes to the ECC code to clean up error handling (I think most of that was from the move in 1.06 to the plugins)
All of the errors were in cleaning up from heap failures. So they were not likely to be triggered in normal usage
Made similar fixes to the RSA and DSA code (my bad)
-- Cryptography Research Inc. contributed a bunch of fixes to silence warnings (with MSVC) w.r.t. assigned data to unsigned char types.
-- Martin Marko suggested some fixes to make the RNG build with WinCE.
-- Updates to the manual for print (some fixes thanks to Martin Marko)
November 17th, 2006
v1.15 -- Andreas Lange found that if sha256_init DID fail in fortuna it wouldn't clean up the state correctly. Thanks.
Fortunately sha256_init cannot fail (as of v1.14) :-)
-- Andreas Lange contributed RMD-256 and RMD-320 code.
-- Removed mutex locks from fortuna_import as they create a deadlock and aren't required anyways [Avi Zelmanovich]
-- Added LTC_NO_PROTOTYPES to avoid prototyping functions like memset/memcpy. Required for fans of GCC 3.3.x
-- David Eder caught a off by one overrun bug in pmac_done() which can be exploited if your output tag buffer is
smaller than the block size of the cipher, e.g. if you have a 4-byte buffer and you tell pmac_done that you want
a 4-byte TAG it will store 4 bytes but return an outlen of 5.
-- Added signatures to the ECC and RSA benchmarks
-- Added LTC_PROFILE to run the PK tests only once in the timing demo (so you can capture events properly)
-- Andreas contributed PKCS #1 v1.5 code that merged cleanly with the existing PKCS code. w00t.
(update: I had to fix it to include the digestInfo and what not. Bad Andreas, bad! hehehe)
-- Fixed a signed variable error in gcm_process() (hard to trigger bug fortunately)
-- Removed all memcmp/memset/memcpy from the source (replaced with X macros)
-- Renamed macros HMAC/OMAC/PMAC to have a LTC_ prefix. If you pass these on the command line please update your makefiles
-- Added XCBC-MAC support [RFC 3566]
-- fixed LOAD32H and LOAD64H to stop putting out that darn warning :-)
-- Added the Korean SEED block cipher [RFC 4269]
-- Added LTC_VALGRIND define which makes SOBER-128 and RC4 a pure PRNG (and not a stream cipher). Useful if you use
Valgrind to debug your code (reported by Andreas Lange)
-- Made SOBER-128 more portable by removing the ASCII key in the test function (my bad, sorry).
-- Martin Mocko pointed out that if you have no PRNGs defined the lib won't build. Fixed, also fixed for if you have no
hashes defined.
-- Sped up F8 mode with LTC_FAST
-- Made CTR mode RFC 3686 compliant (increment counter first), to enable, OR the value LTC_CTR_RFC3686 to the "mode"
parameter you pass to ctr_start(), otherwise it will be LTC compliant (e.g. encrypt then increment)
-- Added ctr_test() to test CTR mode against RFC 3686
-- Added crypt_fsa() ... O_o
-- Fixed LTC_ECC_TIMING_RESISTANT so it once again builds properly (pt add/dbl are through the plugin now)
-- Added ANSI X9.63 (sec 4.3.6) import/export of public keys (cannot export to compressed formats but will import
hybrid compressed)
-- Added SECP curves for 112, 128, and 160 bits (only the 'r1' curves)
-- Added 3GPP-F9 MAC (thanks to Greg Rose for the test vectors)
-- Added the KASUMI block cipher
-- Added F9/XCBC/OMAC callbacks to the cipher plugin
-- Added RSA PKCS #1 v1.5 signature/encrypt tests to rsa_test.c
-- Fix to yarrow_test() to not call yarrow_done() which is invalid in that context (thanks Valgrind)
-- Christophe Devine pointed out that Anubis would fail on various 64-bit UNIX boxes when "x>>24" was used as an index, we needed
to mask it with 0xFF. Thanks. Fixed.
August 0x1E, 0x07D6
v1.14 -- Renamed the chaining mode macros from XXX to LTC_XXX_MODE. Should help avoid polluting the macro name space.
-- clean up of SHA-256
-- Chris Colman pointed out that der_decode_sequence_* allows LTC_ASN1_SETOF to accept SEQUENCEs and vice versa.
Decoder [non-flexi decoder that is] is more strict now and requires a match.
-- Steffen Jaeckel pointed out a typo in the user manual (re: rsa_exptmod). Fixed. This disproves the notion that
nobody reads it. :-)
-- Made GCM a bit more portable w.r.t. handling the CTR IV (e.g. & with 255)
-- Add LTC_VERBOSE if you really want to see what test is doing :-)
-- Added SSE2 support to GCM [use GCM_TABLES_SSE2 to enable], shaves 2 cycles per byte on Opteron processors
Shaved 4 cycles on a Prescott (Intel P4)
Requires you align your gcm_state on a 16 byte boundary, see gcm_memory() for more info
-- Added missing prototype for f8_test_mode()
-- two fixes to CCM for corner cases [L+noncelen > 15] and fixing the CTR pad to encrypt the CBC-MAC tag
-- Franz Glasner pointed out the ARGTYPE=4 is not actually valid. Fixed.
-- Fixed bug in f8_start() if your key < saltkey unspecified behaviour occurs. :-(
-- Documented F8 mode. Yeah, because you read the manual.
-- Minor updates to the technotes.
June 17th, 2006
v1.13 -- Fixed to fortuna_start() to clean up state if an error occurs. Not really useful at this stage (sha256 can't fail) but useful
if I ever make fortuna pluggable
-- Mike Marin submitted a whole bunch of patches for fixing up the libs on traditional UNIX platforms. Go AIX! Thanks!
-- One of bugs found in the multi demo highlights that at least with gcc you need to pass integers with a UL prefix to ensure
they're unsigned long
-- Updated the FP ECC code to use affine points. It's teh fast.
-- Made it so many functions which return CRYPT_BUFFER_OVERFLOW now also indicate the required buffer size, note that not all functions
do this (most do though).
-- Added F8 chaining mode. It's super neato.
May 29th, 2006
v1.12 -- Fixed OID encoder/decoder/length to properly handle the first two parts of an OID, matches 2002 X.690 now.
-- [Wesley Shields] Allows both GMP/LTM and TFM to be defined now.
-- [Wesley Shields] GMP pluggin is cleaner now and doesn't use deprecated symbols. Yipee
-- Added count_lsb_bits to get the number of leading LSB zero bits there are.
-- Fixed a bug in the INTEGER encoders for values of -(256**k)/2
-- Added BOOLEAN type to ASN.1 thingy-ma-do-hicky
-- Testprof doesn't strictly require GMP ... oops [Nils Durner]
-- Added LTC_CALL and LTC_EXPORT macros in tomcrypt_cfg.h to support various calling and linker conventions
(Thanks to John Kirk from Demonware)
-- In what has to be the best thing since sliced bread I bring you MECC_FP which is the fixed point
ECC point multiplier. It's fast, it's sexy and what's more it's hella fast [did I mention it's fast?]
You can tune it somewhat with FP_LUT (default to 8) for look-up width.
Read section 8.2 of the manual for more info.
It is disabled by default, you'll have to build LTC with it defined to get it.
-- Fixed bug in ecc_test.c (from testprof) to include the 521 [not 512] bit curve. :-)
April 4th, 2006
v1.11 -- Removed printf's from lrw_test ... whoops
-- lrw_process now checks the return of the cipher ecb encrypt/decrypt calls
-- lrw_start was not using num_rounds ...
-- Adam Miller reported a bug in the flexi decoder with elements past the end of a sequence. Fixed.
-- Bruce Guenter suggested I use --tag=CC for libtool builds where the compiler may think it's C++. (I applied this to LTM and TFM)
-- Optimized the ECC for TFM a bit by removing the useless "if" statements (most TFM functions don't return error codes)
Actually shaved a good chunk of time off and made the code smaller. By default with TFM the stock LTC point add/dbl functions
will be totally omitted (ECC-256 make key times on a Prescott for old vs. new are 11.03M vs. 9.59M cycles)
-- added missing CVS tags to ltc_ecc_mulmod.c
-- corrected typo in tomcrypt_cfg.h about what the file has been called
-- corrected my address in the user manual. A "bit" out of date.
-- added lrw_gen to tv_gen
-- added GMP plugin, only tested on a AMD64 and x86_32 Gentoo Linux box so be aware
-- made testme.sh runs diff case insensitivityly [whatever...] cuz GMP outputs lowercase satan text
-- added LDFLAGS to the makefile to allow cross porting linking options
-- added lrw_test() to the header file ... whoops
-- changed libtomcrypt.org to libtomcrypt.com .... mumble mumble
-- Updates to detect __STRICT_ANSI__ which is defined in --std=c99 modes (note -ansi is not supported as it lacks long long) so you can
build LTC out of the box with c99 (note: it'll be slower as there is no asm in this case)
-- Updated pelican.c and aes_tab.c to undef tables not-required. The tables are static so both AES and Pelican MAC would have copies. Save a few KB in the final binary.
-- Added LTC_NO_FAST to the makefile.icc to compensate for the fact ICC v9 can't handle it (Pelican MAC fails for instance)
February 11th, 2006
v1.10 -- Free ecb/cbc/ctr/lrw structures in timing code by calling the "done" function
-- fixed bug in lrw_process() which would always use the slow update ...
-- vastly sped up gcm_gf_mult() when LTC_FAST is defined. This speeds up LRW and GCM state creation, useful for servers with GCM
-- Removed NLS since there are some attacks against it.
-- fixed memory leak in rsa_import reported by John Kuhns
++ re-released as the rsa fix was incorrect (bad John bad ... hehehe) and I missed some NULLs in the static descriptor entry for ciphers
January 26th, 2006
v1.09 -- Added missing doxygen comments to some of the ASN.1 routines
-- Added "easy button" define LTC_EASY and LTC will build with a subset of all the algos. Reduces build times for typical
configurations. Tunable [see tomcrypt_custom.h]
-- Added some error detection to reg_algs() of the testprof.a library to detect when the PRNG is not setup correctly (took me 10 mins to figure out, PITA!)
-- Similar fixes to timing demo (MD5 not defined when EASY is defined)
-- Added the NLS enc+mac stream cipher from QUALCOMM, disabled for this release, waiting on test vectors
-- Finally added an auto-update script for the makefiles. So when I add new files/dirs it can automatically fix up the makefiles [all four of them...]
-- Added LRW to the list of cipher modes supported
-- cleaned up ciphers definitions to remove cbc/cfb/ofb/ctr/etc from the namespace when not used.
November 24th, 2005
v1.08 -- Added SET and SET OF support to the ASN.1 side
-- Fixed up X macros, added QSORT to the mix [thanks SET/SETOF]
-- Added XMEMCMP to the list of X macros
-- In der_decode_sequence() the SHORT_INTEGER type was not being handled correctly [oddly enough it worked just enough to make RSA work ... go figure!]
-- Fixed bug in math descriptors where if you hadn't defined MECC (ECC support) you would get linker errors
-- Added RSA accelerators to the math descriptors to make it possible to not include the stock routines if you supply your own.
-- dsa_decrypt_key() was erroneously dependent on MECC not MDSA ... whoops
-- Moved DSA size limits to tomcrypt_pk.h so they're defined with LTC_NO_PK+MDSA
-- cleaned up tomcrypt_custom.h to make customizable PK easier (and also cleaned up the error traps so they're correctly reported)
November 18th, 2005
v1.07 -- Craig Schlenter pointed out the "encrypt" demo doesn't call ctr_start() correctly. That's because as of a few releases ago
I added support to set the mode of the counter at init time
-- Fixed some "testprof" make issues
-- Added RSA keygen to the math descriptors
-- Fixed install_test target ... oops
-- made the "ranlib" program renamable useful for cross-compiling
-- Made the cipher accelerators return error codes. :-)
-- Made CCM accept a pre-scheduled key to speed it up if you use the same key for multiple packets
-- Added "Katja" public key crypto. It's based on the recent N = p^2q work by Katja. I added OAEP padding
to it. Note this code has been disabled not because it doesn't work but because it hasn't been thoroughly
analyzed. It does carry some advantages over RSA (slightly smaller public key, faster decrypt) but also
some annoying "setup" issues like the primes are smaller which makes ECM factoring more plausible.
-- Made makefile accept a NODOCS flag to disable the requirement of tetex to install LTC for you no tetex people... all 3 of ya :-)
-- Cleaned up rsa_export() since "zero" was handled with a SHORT_INTEGER
-- Cleaned up the LIBTEST_S definitions in both GNU makefiles. A few minor touchups as well.
-- Made the cipher ecb encrypt/decrypt return an int as well, changed ALL dependent code to check for this.
-- der_decode_choice() would fail to mark a NULL as "used" when decoding. Fixed
-- ecc_decrypt_key() now uses find_hash_oid() to clean up the code ;-)
-- Added mp_neg() to the math descriptors.
-- Swapped arguments for the pkcs_1_mgf1() function so the hash_idx is the first param (to be more consistent)
-- Made the math descriptors buildable when RSA has been undefined
-- ECC timing demo now capable of detecting which curves have been defined
-- Refactored the ECC code so it's easier to maintain. (note: the form of this code hasn't really changed since I first added ECC ... :-/)
-- Updated the documentation w.r.t. ECC and the accelerators to keep it current
-- Fixed bug in ltc_init_multi() which would fail to free all allocated memory on error.
-- Fixed bug in ecc_decrypt_key() which could possibly lead to overflows (if MAXBLOCKSIZE > ECC_BUF_SIZE and you have a hash that emits MAXBLOCKSIZE bytes)
-- Added encrypt/decrypt to the DSA side (basically DH with DSA parameters)
-- Updated makefiles to remove references to the old DH object files and the ecc_sys.o crap ... clean code ahead!
-- ecc_import() now checks if the point it reads in lies on the curve (to prevent degenerative points from being used)
-- ECC code now ALWAYS uses the accelerator interface. This allows people who use the accelerators to not have the stock
ECC point add/dbl/mul code linked in. Yeah space savings! Rah Rah Rah.
-- Added LTC_MUTEX_* support to Yarrow and Fortuna allowing you to use respective prng_state as a global PRNG state [e.g. thread-safe] if you define one of the LTC_* defines at
build time (e.g. LTC_PTHREAD == pthreads)
-- Added PPC32 support to the rotate macros (tested on an IBM PPC 405) and LTC_FAST macros (it aint fast but it's faster than stock)
-- Added ltc_mp checks in all *_make_key() and *_import() which will help catch newbs who don't register their bignum first :-)
-- the UTCTIME type was missing from der_length_sequence() [oops, oh like you've never done that]
-- the main makefile allows you to rename the make command [e.g. MAKE=gmake gmake install] so you can build LTC on platforms where the default make command sucks [e.g. BSD]
-- Added DER flexi decoder which allows the decoding of arbitrary DER encoded packets without knowing
their structure in advance (thanks to MSVC for finding 3 bugs in it just prior to release! ... don't ask)
August 1st, 2005
v1.06 -- Fixed rand_prime() to accept negative inputs as a signal for BBS primes. [Fredrik Olsson]
-- Added fourth ARGCHK type which outputs to stderr and continues. Useful if you trap sigsegv. [Valient Gough]
-- Removed the DH code from the tree
-- Made the ECC code fully public (you can access ecc_mulmod directly now) useful for debuging
-- Added ecc test to tv_gen
-- Added hmac callback to hash descriptors.
-- Fixed two doxy comment errors in the UTCTIME functions
-- rsa_import() can now read OpenSSL format DER public keys as well as the PKCS #1 RSAPublicKey format.
Note that rsa_export() **ONLY** writes PKCS #1 formats
-- Changed MIN/MAX to only define if not already present. -- Kirk J from Demonware ...
-- Ported tv_gen to new framework (and yes, I made ecc vectors BEFORE changing the API and YES they match now :-))
-- ported testing scripts to support pluggable math. yipee!
-- Wrote a TFM descriptor ... yipee
-- Cleaned up LTC_FAST in CBC mode a bit
-- Merged in patches from Michael Brown for the sparc/sparc64 targets
-- Added find_hash_oid() to search for a hash by its OID
-- Cleaned up a few stray CLEAN_STACKs that should have been LTC_CLEAN_STACK
-- Added timing resistant ECC, enable by defining LTC_ECC_TIMING_RESISTANT then use ECC API as normal
-- Updated the ECC documentation as it was a bit out of date
June 27th, 2005
v1.05
-- Added Technote #6 which covers the current PK compliance.
-- Fixed buffer overflow in OAEP decoder
-- Added CHOICE to the list of ASN.1 types
-- Added UTCTIME to the list of ASN.1 types
-- Added MUTEX locks around descriptor table functions [but not on the functions that are dependent on them]
All functions call *_is_valid() before using a descriptor index which means the respective table must be unlocked before
it can be accessed. However, during the operation [e.g. CCM] if the descriptor has been altered the results will be
undefined.
-- Minor updates to the manual to reflect recent changes
-- Added a catch to for an error that should never come up in rsa_exptmod(). Just being thorough.
June 15th, 2005
v1.04
-- Fixed off by one [bit] error in dsa_make_key() it was too high by one bit [not a security problem just inconsistent]
-- ECC-224 curve was wrong [it was an ok curve just not NIST, so no security flaw just interoperability].
-- Removed point compression since it slows down ECC ops to save a measly couple bytes.
This makes the ecc export format incompatible with 1.03 [it shouldn't change in the future]
-- Removed ECC-160 from timing and added the other curves
June 9th, 2005
v1.03
-- Users may want to note that on a P4/GCC3.4 platform "-fno-regmove" greatly accelerates the ciphers/hashes.
--------------------------------------------------------------------------------------------------------------
-- Made it install the testing library in the icc/static makefiles
-- Found bug in ccm_memory.c which would fail to compile when LTC_CLEAN_STACK was enabled
-- Simon Johnson proposed I do a fully automated test suite. Hence "testme.sh" was born
-- Added LTC_NO_TEST which forces test vectors off (regardless of what tomcrypt_custom.h has)
-- Added LTC_NO_TABLES which disables large tables (where possible, regardless of what tomcrypt_custom.h has)
-- New test script found a bug in twofish.c when TABLES was disabled. Yeah testing!
-- Added a LTC_FAST specific test to the testing software.
-- Updated test driver to actually halt on errors and just print them out (useful for say... automated testing...)
-- Added bounds checking to Pelican MAC
-- Added BIT and OCTET STRING to the ASN.1 side of things.
-- Pekka Riikonen pointed out that my ctr_start() function should accept the counter mode.
-- Cleaned up warnings in testprof
-- Removed redundant mu and point mapping in ecc_verify_hash() so it should be a bit faster now
-- Pekka pointed out that the AES key structure was using 32 bytes more than it ought to.
-- Added quick defines to remove entire classes of algorithms. This makes it easier if you want to build with just
one algorithm (say AES or SHA-256). Defines are LTC_NO_CIPHERS, LTC_NO_MODES, LTC_NO_HASHES, LTC_NO_MACS,
LTC_NO_PRNGS, LTC_NO_PK, LTC_NO_PKCS
-- As part of the move for ECC to X9.62 I've changed the signature algorithm to EC DSA. No API changes.
-- Pekka helped me clean up the PKCS #1 v2.1 [OAEP/PSS] code
-- Wrote new DER SEQUENCE coder/decoder
-- RSA, DSA and ECDSA now use the DER SEQUENCE code (saves a lot of code!)
-- DSA output is now a DER SEQUENCE (so not compatible with previous releases).
-- Added Technote #5 which shows how to build LTC on an AMD64 to have a variety of algorithms in only ~80KB of code.
-- Changed temp variable in LOAD/STORE macros to "ulong32" for 32-bit ops. Makes it safer on Big endian platforms
-- Added INSTALL_GROUP and INSTALL_USER which you can specify on the build to override the default USER/GROUP the library
is to be installed as
-- Removed "testprof" from the default build.
-- Added IA5, NULL and Object Identifier to the list of ASN.1 DER supported types
-- The "no_oops" target (part of zipup) now scans for non-cvs files. This helps prevent temp/scratch files from appearing in releases ;-)
-- Added DERs for missing hashes, but just the OID not the PKCS #1 v1.5 additions.
-- Removed PKCS #1 v1.5 from the tree since it's taking up space and you ought to use v2.1 anyways
-- Kevin Kenny pointed out a few stray // comments
-- INTEGER code properly supports negatives and zero padding [Pekka!]
-- Sorted asn1/der/ directory ... less of a mess now ;-)
-- Added PRINTABLE STRING type
-- Removed ECC-160 as it wasn't a standard curve
-- Made ecc_shared_secret() ANSI X9.63 compliant
-- Changed "printf" to "fprintf(stderr, " in the testbench... ;-)
-- Optimized the GCM table creation. On 1KB packets [with key switching] the new GCM is 12.7x faster than before.
-- Changed OID representation for hashes to be just a list of unsigned longs (so you can compare against them nicely after decoding a sequence)
-- ECC code now uses Montgomery reduction ... it's even faster [ECC-256 make key down from 37.4M to 4.6M cycles on an Athlon64]
-- Added SHORT_INTEGER so users can easily store DER encoded INTEGER types without using the bignum math library
-- Fixed OMAC code so that with LTC_FAST it doesn't require that LTC_FAST_TYPE divides 16 [it has to divide the block size instead]
-- ECC key export is now a simple [and documented] SEQUENCE, the "encrypt_key" also uses a new SEQUENCE format.
-- Thanks goes to the following testers
Michael Brown - Solaris 10/uSPARCII
Richard Outerbridge - MacOS
Martin Carpenter - Solaris 8/uSPARCII [Thanks for cleaning up the scripts]
Greg Rose - ... SunOS 5.8/SPARC [... what's with the SPARCS?]
Matt Johnston - MacOS X [Thanks for pointing out GCC 4 problems with -Os]
April 19th, 2005
v1.02
-- Added LTC_TEST support to gcm_test()
-- "pt/ct" can now be NULL in gcm_process() if you are processing zero bytes
-- Optimized GCM by removing the "double copy" handling of the plaintext/aad
-- Richard Outerbridge pointed out that x86_prof won't build on MACOS and that the manual
erroneously refers to "mycrypt" all over the place. Fixed.
April 17th, 2005
v1.01
** Secure Science Corporation has supported this release cycle by sponsoring the development time taken. Their
continuing support of this project has helped me maintain a steady pace in order to keep LibTomCrypt up to date,
stable and more efficient.
-----------------------------------------------------------------------------------------------------
-- Updated base64_decode.c so if there are more than 3 '=' signs it would stop parsing
-- Merged in latest mpi that fixed a few bugs here and there
-- Updated OAEP encoder/decoder to catch when the hash output is too large
Cleaned up PSS code too
-- Andy Bontoft fixed a bug in my demos/tests/makefile.msvc ... seems "dsa_test.c" isn't an object
afterall. Thanks.
-- Made invalid ECC key sizes (configuration) not hard fault the program (it returns an error code now)
-- SAFER has been re-enabled after I was pointed to http://www.ciphersbyritter.com/NEWS2/95032301.HTM
[Mark Kotiaho]
-- Added CCM mode to the encauth list (now has EAX, OCB and CCM, c'est un treo magnifique!)
-- Added missing ASN.1 header to the RSA keys ... oops... now the rsa_export/import are FULLY compatible
with other libs like OpenSSL (comment: Test vectors would go a long way RSA...)
-- Manually merged in fix to the prime_random_ex() LTM function that ensures the 2nd MSB is set properly. Now
When you say "I want a 1024/8 byte RSA key" the MSB bit of the modulus is set as expected. Note I generally
don't view this as a "huge issue" but it's just one less nit to worry about. [Bryan Klisch]
-- A new CVS has been setup on my Athlon64 box... if you want developer access send me an email (and at this point the email would have to be awesome).
-- Updated API for ECB and CBC shell code. Now can process N whole blocks in one call (like $DEITY intended)
-- Introduced a new "hardware accel" framework that can be used to speed up cipher ECB, CBC and CTR mode
calls. Later on dependent code (e.g. OMAC, CCM) will be re-written to use the generic cbc/ctr functions. But now
if you [say] call ctr_encrypt() with a cipher descriptor that has hardware CTR it will automatically
be used (e.g. no code rewrites)
-- Now ships with 20% more love.
-- x86_prof now uses ECB shell code (hint: accelerators) and outputs cycles per BLOCK not byte. This will make it a bit
easier to compare hardware vs. software cipher implementations. It also emits timings for CBC and CTR modes
-- [Peter LaDow] fixed a typo w.r.t. XREALLOC macro (spelling counts kids!)
-- Fixed bug with __x86_64__ where ROL64/ROR64 with LTC_NO_ROLC would be the 32-bit versions instead...
-- Shipping with preliminary GCM code (disabled). It's buggy (stack overflow hidden somewhere). If anyone can spot it let me know.
-- Added Pelican MAC [it's an AES based fast MAC] to the list of supported MACs
-- Added LTC_FAST [and you can disable by defining LTC_NO_FAST] so that CBC and CTR mode XOR whole words [e.g. 32 or 64 bits] at a time
instead of one byte. On my AMD64 this reduced the overhead for AES-128-CBC from 4.56 cycles/byte to around 1 cycle/byte. This requires
that you either allow unaligned read/writes [e.g. x86_32/x86_64] or align all your data. It won't go out of it's way to ensure
aligned access. Only enabled for x86_* platforms by default since they allow unaligned read/writes.
-- Added LTC_FAST support to PMAC (drops the cycle/byte by about 9 cycles on my AMD64) [note: I later rewrote this prior to release]
-- Updated "profiled" target to work with the new directory layout
-- Added [demo only] optimized RC5-CTR code to x86_prof demo to show off how to make an accelerator
[This has been removed prior to release... It may re-appear later]
-- Added CCM acelerator callbacks to the list [now supports ECB, CTR, CBC and now CCM].
-- Added chapter to manual about accelerators (you know you want it)
-- Added "bswap" optimizations to x86 LOAD/STORE with big endian. Can be disabled by defining LTC_NO_BSWAP
-- LTC_NO_ASM is now the official "disable all non-portable stuff" macro. When defined it will make the code endian-neutral,
disable any form of ASM and disable LTC_FAST load/stores. Essentially build the library with this defined if you're having
trouble building the library (old GCCs for instance dislike the ROLc macro)
-- Added tomcrypt_mac.h and moved MAC/encMAC functions from tomcrypt_hash.h into it
-- Added "done" function to ciphers and the five chaining modes [and things like omac/pmac/etc]
-- Changed install group to "wheel" from "root".
-- Replaced // comments with /**/ so it will build on older UNIX-like platforms
-- x86_prof builds and runs with IntelCC fine now
-- Added "stest" build to intel CC to test static linked from within the dir (so you don't have to install to test)
-- Moved testing/benchmark into testprof directory and build it as part of the build. Now you can link against libtomcrypt_prof.a to get
testing info (hint: hardware developers ;-) )
-- Added CCM to tv_gen
-- Added demos to MSVC makefile
-- Removed -funroll-all-loops from GCC makefile and replaced with -funroll-loops which is a bit more sane (P4 ain't got much cache for the IDATA)
-- Fixed GCM prior to release and re-enabled it. It has not been optimized but it does conform when compiled with optimizations.
-- I've since optimized GCM and CCM. They're close in speed but GCM is more flexible imho (though EAX is more flexible than both)
-- For kicks I optimized the ECC code to use projective points. Gets between 3.21x (Prescott P4) to 4.53x (AMD64) times faster than before at 160-bit keys and the
speedup grows as the keysize grows. Basically removing most practical reasons to "not use the ECC code". Enjoy.
-- Added LTC_FAST support to OMAC/PMAC and doubled it's speed on my amd64 [faster on the P4 too I guess]
-- Added GCM to tv_gen
-- Removed "makefile.cygwin_dll" as it's not really used by anyone and not worth the effort (hell I hardly maintain the MSVC makefiles ...)
-- Updated a few files in the "misc" directory to have correct @file comments for doxygen
-- Removed "profile" target since it was slower anyways (go figure...)
December 31st, 2004
v1.00
-- Added "r,s == 0" check to dsa_verify_hash()
-- Added "multi block" helpers for hash, hmac, pmac and omac routines so you can process multiple non-adjacent
blocks of data with one call (added demos/multi.c to make sure they work)
-- Note these are not documented but they do have doxygen comments inside them
-- Also I don't use them in other functions (like pkcs_5_2()) because I didn't have the time. Job for the new LTC maintainer ;-)
-- Added tweaked Anubis test vectors and made it default (undefined ANUBIS_TWEAK to get original Anubis)
-- Merged in fix for mp_prime_random_ex() to deal with MSB and LSB "bugs"
-- Removed tim_exptmod() completely, updated several RSA functions (notably v15 and the decrypt/verify) so they
don't require a prng now
-- This release brought to you by the fine tunes of Macy Gray. We miss you.
December 23rd, 2004
v1.00rc1
-- Renamed "mycrypt_*" to "tomcrypt_*" to be more specific and professional
Now just include "tomcrypt.h" instead of "mycrypt.h" to get LTC ;-)
-- Cleaned up makefiles to ensure all headers are correctly installed
-- Added "rotate by constant" macros for portable, x86-32 and x86-64
You can disable this new code with LTC_NO_ROLC which is useful for older GCCs
-- Cleaned up detection of x86-64 so it works for ROL/ROR macros
-- Fixed rsa_import() so that it would detect multi-prime RSA keys and error appropriately
-- Sorted the source files by category and updated the makefiles appropriately
-- Added LTC_DER define so you can trim out DER code if not required
-- Fixed up RSA's decrypt functions changing "res" to "stat" to be more in sync
with the signature variables nomenclature. (no code change just renamed the arguments)
-- Removed all labels starting with __ and replaced with LBL_ to avoid namespace conflicts (Randy Howard)
-- Merged in LTM fix to mp_prime_random_ex() which zap'ed the most significant byte if the bit size
requested was a multiple of eight.
-- Made RSA_TIMING off by default as it's not terribly useful [and likely to be deprecated]
-- Renamed SMALL_CODE, CLEAN_STACK and NO_FILE to have a LTC_ prefix to avoid namespace collisions
with other programs. e.g. SMALL_CODE => LTC_SMALL_CODE
-- Zed Shaw pointed out that on certain systems installing libs as "root" isn't possible as the super-user
is not root. Now the makefiles allow this to be changed easily.
-- Renamed "struct _*_descriptor" to "struct ltc_*_descriptor" to avoid using a leading _
Also renamed _ARGCHK to LTC_ARGCHK
-- Zed Shaw pointed out that I still defined the prng structs in tomcrypt_prng.h even if they
weren't defined. This made undef'ing FORTUNA break the build.
-- Added LTC_NO_ASM to disable inline asm macros [ROL/ROR/etc]
-- Changed RSA decrypt functions to change the output length variable name from "keylen" to "outlen" to make
it more consistent.
-- Added the 64-bit Khazad block cipher [NESSIE]
-- Added the 128-bit Anubis block cipher [with key support for 128...320 bit keys] [NESSIE]
-- Changes to several MAC functions to rename input arguments to more sensible names
-- Removed FAST_PK support from dh_sys.c
-- Declared deskey() from des.c as static instead of a global
-- Added pretty much all practical GCC warning tests to the GCC [related] makefiles. These additional
warnings can easily be disabled for those with older copies of GCC [or even non GNU cc's]
-- Added doxygen @ tags to the code... phew that was a hell of a lot of [repetitive] work
-- Also added pre-configured Doxygen script.
-- Cleaned up quite a few functions [ciphers, pk, etc] to make the parameters naming style consistent
E.g. ciphers keys are called "skey" consistently now. The input to PK encryption is called "in", etc.
These changes require no code changes on the behalf of developers fortunately
-- Started a SAFER+ optimizer [does encrypt only] which shaves a good 30 or so cycles/byte on my AMD64
at an expense of huge code. It's in notes/etc/saferp_optimizer.c
-- DSA sign/verify now uses DER encoded output/inputs and no LTC style headers.
-- Matt Johnston found a missing semi-colon in mp_exptmod(). Fix has been merged in.
October 29th, 2004
v0.99 -- Merged in the latest version of LTM which includes all of the recent bug fixes
-- Deprecated LTMSSE and removed it (to be replaced with TFM later on)
-- Stefan Arentz pointed out that mp_s_rmap should be extern
-- Kristian Gj?steen pointed out that there are typos in the
"test" makefile and minor issues in Yarrow and Sober [just cosmetics really]
-- Matthew P. Cashdollar pointed out that "export" is a C++ keyword
so changed the PRNG api to use "pexport" and "pimport"
-- Updated "hashsum" demo so it builds ;-)
-- Added automatic support for x86-64 (will configure for 64-bit little endian automagically)
-- Zhi Chen pointed out a bug in rsa_exptmod which would leak memory on error.
-- Made hash functions "init" return an int. slight change to API ;-(
-- Added "CHC" mode which turns any cipher into a hash the other LTC functions can use
-- Added CHC mode stuff to demos such as tv_gen and hashsum
-- Added "makefile.shared" which builds and installs shared/static object copies
of the library.
-- Added DER for bignum support
-- RSA is now fully joy. rsa_export/rsa_import use PKCS #1 encodings and should be
compatible with other crypto libs that use the format.
-- Added support for x86-64 for the ROL/ROR macros
-- Changed the DLL and SO makefiles to optimize for speed, commented SMALL_CODE in
mycrypt_custom.h and added -DSMALL_CODE to the default makefile
-- Updated primality testing code so it does a minimum of 5 tests [of Miller-Rabin]
(AFAIK not a security fix, just warm fuzzies)
-- Minor updates to the OMAC code (additional __ARGCHK and removed printf from omac_test... oops!)
-- Update build and configuration info which was really really really out of date. (Chapter 14)
++ Minor update, switch RSA to use the PKCS style CRT
August 6th, 2004
v0.98 -- Update to hmac_init to free all allocated memory on error
-- Update to PRNG API to fix import/export functions of Fortuna and Yarrow
-- Added test functions to PRNG api, RC4 now conforms ;-) [was a minor issue]
-- Added the SOBER-128 PRNG based off of code donated by Greg Rose.
-- Added Tech Note #4 [notes/tech0004.txt]
-- Changed RC4 back [due to request]. It will now XOR the output so you can use it like
a stream cipher easily.
-- Update Fortuna's export() to emit a hash of each pool. This means that the accumulated
entropy that was spread over all the pools isn't entirely lost when you export/import.
-- Zhi Chen suggested a comment for rsa_encrypt_key() to let users know [easily] that it was
PKCS #1 v2.0 padding. (updated other rsa_* functions)
-- Cleaned up Noekeon to remove unrolling [wasn't required, was messy and actually slower with GCC/ICC]
-- Updated RC4 so that when you feed it >256 bytes of entropy it quietly ignores additional
bytes. Also removed the % from the key setup to speed it up a bit.
-- Added cipher/hash/prng tests to x86_prof to help catch bugs while testing
-- Made the PRNG "done" return int, fixed sprng_done to not require prng* to be non-null
-- Spruced up mycrypt_custom.h to trap more errors and also help prevent LTMSSE from being defined
on non-i386 platforms by accident.
-- Added RSA/ECC/DH speed tests to x86_prof and cleaned it up to build with zero warnings
-- Changed Fortuna to count only entropy [not the 2 byte header] added to pool[0] into the
reseed mechanism.
-- Added "export_size" member to prng_descriptor tables so you can know in advance the size of
the exported state for any given PRNG.
-- Ported over patch on LTM 0.30 [not ready to release LTM 0.31] that fixes bug in mp_mul()/mp_div()
that used to result in negative zeroes when you multiplied zero by a negative integer.
(patch due to "Wolfgang Ehrhardt" <[email protected]>)
-- Fixed rsa_*decrypt_key() and rsa_*verify_hash() to default to invalid "stat" or "res". This way
if any of the higher level functions fail [before you get to the padding] the result will be in
a known state]. Applied to both v2 and v1.5 padding helpers.
-- Added MACs to x86_prof
-- Fixed up "warnings" in x86_prof and tv_gen
-- Added a "profiled" target back [for GCC 3.4 and ICC v8]. Doesn't seem to help but might be worth
tinkering with.
-- Beefed up load/store test in demos/test
++ New note, in order to use the optimized LOAD/STORE macros your platform
must support unaligned 32/64 bit load/stores. The x86s support this
but some [ARM for instance] do not. If your platform cannot perform
unaligned operations you must use the endian neutral code which is safe for
any sort of platform.
July 23rd, 2004
v0.97b -- Added PKCS #1 v1.5 RSA encrypt/sign helpers (like rsa_sign_hash, etc...)
-- Added missing prng check to rsa_decrypt_key() [not critical as I don't use
descriptors directly in that function]
-- Merged in LTM-SSE, define LTMSSE before you build and you will get SSE2 optimized math ;-)
(roughly 3x faster on a P4 Northwood). By default it will compile as ISO C portable
code (when LTMSSE is undefined).
-- Fixed bug in ltc_tommath.h where I had the kara/toom cutoffs not marked as ``extern''
Thanks to "Stefan Arentz" <stefan at organicnetwork.net>
-- Steven Dake <[email protected]> and Richard Amacker <[email protected]> submitted patches to
fix pkcs_5_2(). It now matches the output of another crypto library. Whoops... hehehe
-- Updated PRNG api. Added Fortuna PRNG to the list of supported PRNGs
-- Fixed up the descriptor tables since globals are automatically zero'ed on startup.
-- Changed RC4 to store it's output. If you want to encrypt with RC4
you'll have to do the XOR yourself.
-- Fixed buffer overflows/overruns in the HMAC code.
++ API change for the PRNGs there now is a done() function per PRNG. You
should call it when you are done with a prng state. So far it's
not absolutely required (won't cause problems) but is a good idea to
start.
June 23rd, 2004
v0.97a ++ Fixed several potentially crippling bugs... [read on]
-- Fixed bug in OAEP decoder that would incorrectly report
buffer overflows. [Zhi Chen]
-- Fixed headers which had various C++ missing [extern "C"]'s
-- Added "extern" to sha384_desc descriptor which I removed by mistake
-- Fixed bugs in ENDIAN_BIG macros using the wrong byte order [Matt Johnston]
-- Updated tiger.c and des.c to not shadow "round" which is intrinsic on
some C compilers.
-- Updated demos/test/rsa_test.c to test the RSA functionality better
++ This update has been tested with GCC [v3.3.3], ICC [v8] and MSVC [v6+SP6]
all on a x86 P4 [GCC/ICC tested in Gentoo Linux, MSVC in WinXP]
++ Outcome: The bug Zhi Chen pointed out has been fixed. So have the bugs
that Matt Johnston found.
June 19th, 2004
v0.97 -- Removed spurious unused files [arrg!]
-- Patched buffer overflow in tim_exptmod()
-- Fixed buffer overrun bug in pkcs_1_v15_es_decode()
-- Reduced stack usage in PKCS #1 v2.0 padding functions (by several KBs)
-- Removed useless extern's that were an artifact from the project start... ;-)
-- Replaced memcpy/memset with XMEMCPY and XMEMSET for greater flexibility
-- fixed bugs in hmac_done()/hmac_init()/[various others()] where I didn't trap errors
-- Reduced stack usage in OMAC/PMAC/HMAC/EAX/OCB/PKCS#5 by mallocing any significant sized
arrays (e.g. > 100 bytes or so). Only in non-critical functions (e.g. eax_init())
-- "Zhi Chen" <[email protected]> pointed out that rsa_decrypt_key() requires
an incorrect output size (too large). Fixed.
-- Added a "pretty" target to the GCC makefile. Requires PERL. It is NEAT!
-- Minor updates to ch1 of the manual.
-- Cleaned up the indentation and added comments to rsa_make_key(), rsa_exptmod() and
rsa_verify_hash()
-- Updated makefile.icc so the "install" target would work ;-)
-- Removed demos/test.c [deprecated from demos/test/test.c]
-- Changed MAXBLOCKSIZE from 128 to 64 to reflect the true size...
May 30th, 2004
v0.96 -- Removed GF and Keyring code
-- Extended OAEP decoder to distinguish better [and use a more uniform API]
-- Changed PSS/OAEP API slightly to be more consistent with other PK functions (order of arguments)
-- rsa_exptmod() now pads with leading zeroes as per I2OSP.
-- added error checking to yarrow code
-- pointed out that tommath.h from this distro will overwrite tommath.h
from libtommath. I changed this to ltc_tommath.h to avoid any such problems.
-- Fixed bug in PSS encoder/decoder that didn't handle the MSB properly
-- refactored AES, now sports an "encrypt only" descriptor which uses half as much code space.
-- modded Yarrow to try and use refactored AES code and added WHIRLPOOL support (d'oh) ;-)
-- updated ECB, OCB and CBC decrypt functions to detect when "encrypt only" descriptor is used.
-- replaced old RSA code with new code that uses PKCS #1 v2.0 padding
-- replaced old test harness with new over-engineer'ed one in /demos/test/
-- updated cbc/cfb/ofb/ctr code with setiv/getiv functions to change/read the IV without re-keying.
-- Added PKCS #1 v1.5 RSA encryption and signature padding routines
-- Added DER OID's to most hash descriptors (as many as I could find)
-- modded rsa_exptmod() to use timing-resilient tim_exptmod() when doing private key operations
added #define RSA_TIMING which can turn on/off this feature.
-- No more config.pl so please just read mycrypt_custom.h for build-time tweaks
-- Small update to rand_prime()
-- Updated sha1, md5 and sha256 so they are smaller when SMALL_CODE is defined. If you want speed though,
you're going to have to undefine SMALL_CODE ;-)
-- Worked over AES so that it's even smaller now [in both modes].
May 12th, 2004
v0.95 -- Optimized AES and WHIRLPOOL for SMALL_CODE by taking advantage of the fact
the transforms are circulant. AES dropped 5KB and WHIRLPOOL dropped 13KB
using the default build options on the x86.
-- Updated eax so the eax_done() would clear the state [like hmac,pmac,ocb] when
CLEAN_STACK has been defined.
-- added LTC_TEST support to rmd160
-- updates to mycrypt_pk.h
-- updated rand_prime() to faciliate making RSA composites
-- DSA/RSA now makes composites of the exact size desired.
-- Refactored quite a bit of the code, fewer functions per C file
-- cleaned up the makefiles to organize the objects logically
-- added ICC makefile along with "profiled" targets for both GNU and ICC compilers
-- Marked functions for removal before v1.00 see PLAN for more information
-- GCC 3.4.0 tested and seems to work
-- Added PKCS #5 support
-- Fixed typo in comment header of .C files ;-)
-- Added PKCS #1 OAEP and PSS support.
Feb 20th, 2004
v0.94 -- removed unused variables from ocb.c and fixed it to match known test vectors.
-- Added PMAC support, minor changes to OMAC/EAX code [I think....]
-- Teamed up with Brian Gladman. His code verifies against my vectors and my code
verifies against his test vectors. Hazaa for co-operation!
-- Various small changes (added missing ARGCHKs and cleaned up indentation)
-- Optimization to base64, removed unused variable "c"
-- Added base64 gen to demos/tv_gen.c
-- Fix to demos/x86_prof.c to correctly identify the i386 architecture... weird...
-- Fixed up all of the PK code by adding missing error checking, removed "res" variables,
shrunk some stack variables, removed non-required stack variables and added proper
error conversion from MPI to LTC codes. I also spotted a few "off by one" error
checking which could have been used to force the code to read past the end of
the buffer (in theory, haven't checked if it would work) by a few bytes.
-- Added checks to OUTPUT_BIGNUM so the *_export() functions cannot overflow the output and I
also modded it so it stores in the output provided to the function (that is not on
the local stack) which saves memory and time.
-- Made SAFER default to disabled for now (plans are to cleanhouse write an implementation later)
-- Added the 512-bit one-way hash WHIRLPOOL which clocks in at 138 cycles per byte on my
Athlon XP [for comparison, SHA-512 clocks in at 77 cycles per byte]. This code uses the
teams new sbox design (not the original NESSIE one).
Jan 25th, 2004
v0.93 -- [note: deleted v0.93 changes by accident... recreating from memory...]
-- Fix to RC2 to not deference pointer before ARGCHK
-- Fix to NOEKEON to match published test vectors as well as cleaned up the code a bit
-- Optimized Twofish [down to 28 cycles/byte on my box] and Blowfish
-- Fix to OMAC to test cipher block size first [prevents wasting any time]
-- Added more OMAC test vectors
-- Added EAX Encrypt+Authenticate support
-- Fix to DSA to check return of a few LTM functions I forgot [mp_to_unsigned_bin]
-- Added common headers to all C files
-- CTR mode supports big and little [default] endian counters now.
-- fix to find_cipher_any() so that it can handle a fragmented cipher_descriptor table.
-- added find_hash_any() akin to find_cipher_any().
-- Added EAX code to demos/tv_gen.c Hazaa!
-- Removed SONY defines and files from codebase.
-- Added OCB support [patents be damned] and to demos/tv_gen.c
-- Merge all of the INPUT/OUTPUT BIGNUM macros (less toc) into mycrypt_pk.h
-- Made appropriate changes to the debug string in crypt.c
Dec 24th, 2003
v0.92 -- Updated the config.pl script so the options have more details.
-- Updated demos/tv_gen to include RIPEMD hashes
-- Updated Twofish so when TWOFISH_ALL_TABLES is defined a pre-computed RS table
is included [speedup: slight, about 4k cycles on my Athlon].
-- Re-wrote the twofish large key generation [the four 8x32 key dependent tables]. Now about twice as fast.
With both optimizations [e.g. TWOFISH_ALL_TABLES defined] a 128-bit Twofish key can now be scheduled
in 26,000 cycles on my Athlon XP [as opposed to 49,000 before] when optimized for size.
-- config.pl has been updated so rmd128.o and rmd160.o are objects included in the build [oops]
-- Andrew Mann found a bug in rsa_exptmod() which wouldn't indicate if the wrong type of key was specified
(e.g. not PK_PRIVATE or PK_PUBLIC)
-- Fixed up demos/x86_prof so it sorts the output now :-)
-- The project is now powered by radioactive rubber pants.
-- Fixed dh_encrypt_key() so if you pass it a hash with a smaller output than the input key it
will return CRYPT_INVALID_HASH [to match what ecc_encrypt_key() will do]
-- Merge the store/encrypt key part of ecc_encrypt_key() as per dh_encrypt_key() [can you guess what I'm upto?]
-- Massive updates to the prime generation code. I use the LTM random prime functions [and provide a nice
interface between the LTC PRNG's and the LTM generic prng prototype]. I also use a variable number of tests
depending on the input size. This nicely speeds up most prime generation/testing within the library.
-- Added SHA-224 to the list of hashes.
-- Made HMAC test vectors constant and static [takes ROM space instead of RAM]
-- This release was brought to you by the letter P which stands for Patent Infringement.
-- Added generic HASH_PROCESS macro to mycrypt_hash.h which simplifies the hash "process" functions
I also optimized the compression functions of all but MD2 to not perform input copies when avoidable.
-- Removed the division from the Blowfish setup function [dropped 3k cycles on my Athlon]
-- Added stack cleaning to rijndael, cast5 so now all ciphers have CLEAN_STACK code.
-- Added Skipjack to the list of ciphers [made appropriate changes to demos/test.c, demos/tv_gen.c and
demos/x86_prof.c]
-- Added mechanical testing to cipher test vector routines. Now it encrypts 1000 times, then decrypts and
compares. Any fault (e.g. bug in code, compiler) in the routines is likely to show through. Doesn't
stress test the key gen though...
-- Matt Johnson found a bug in the blowfish.c apparently I was out of my mind and put twofish defines in there
The code now builds with any config. Thanks.
-- Added OMAC1 Message Authentication Code support to the library.
-- Re-prototyped the hash "process" and "done" to prevent buffer overflows [which don't seem easy to exploit].
Updated HMAC code to use them too. Hazaa!
-- Fixed bug in ECC code which wouldn't do an _ARGCHK on stat in ecc_verify_hash().
-- Fixed [temp fix] bug in all PK where the OUTPUT_BIGNUM macros would not trap errors on the to_unsigned_bin
conversion [now returns CRYPT_MEM, will fix it up better later]
-- Added DSA to the list of supported PK algorithms.
-- Fixed up various ciphers to &255 the input key bytes where required [e.g. where used to index a table] to prevent
problems on platforms where CHAR_BIT != 8
-- Merged in LibTomMath v0.28
-- Updated demos/x86_prof.c to use Yarrow during the key sched testing [was horribly slow on platforms with blockable
/dev/random].
-- Added OMAC/HMAC tests to demos/tv_gen and I now store the output of this in notes/
-- Fixed a bug in config.pl that wouldn't have TWOFISH_TABLES defined by default (too many commas on the line)
-- Fixed bug in hmac_done(). Apparently FIPS-198 [HMAC] specifies that the output can be truncated. My code
would not support that (does now just like the new OMAC code).
-- Removed "hashsize" from hmac_state as it wasn't being used.
-- Made demos/test.c stop if OMAC or HMAC tests fail (instead of just printing a failed message and keep going).
-- Updated notes/tech0003.txt to take into account the existence of Skipjack [also I fixed a few typos].
-- Slight changes to Noekeon, with SMALL_CODE undefined it uses a fully unrolled version. Dropped +10 cycles/byte
on my Athlon (35 cycles per byte or 410.4Mbit/sec at 1795Mhz)
-- Added _ARGCHK() calls to is_prime() for the two input pointers.
Sept 25th, 2003
v0.91 -- HMAC fix of 0.90 was incorrect for keys larger than the block size of the hash.
-- Added error CRYPT_FILE_NOTFOUND for the file [hmac/hash] routines.
-- Added RIPEMD hashes to the hashsum demo.
-- Added hashsum demo to MSVC makefile.
-- Added RMD160 to the x86_prof demo [oops]
-- Merged in LibTomMath-0.27 with a patch to mp_shrink() that will be in LibTomMath-0.28
Fixes another potential memory leak.
Sept 7th, 2003
v0.90 -- new ROL/ROR for x86 GCC
-- Jochen Katz submitted a patch to the makefile to prevent "make" from making the .a library
when not required.
== By default the KR code is not enabled [it's only a demo anyways!]
-- changed the "buf" in ecc_make_key from 4KB to 128 bytes [since the largest key is 65 bytes]
-- hmac_done() now requires you pass it the size of the destination buffer to prevent
buffer overflows. (API CHANGE)
-- hmac/hash filebased routines now return CRYPT_NOP if NO_FILE is defined.
-- I've removed the primes from dh.c and replaced them with DR safe primes suitable for the default
configuration of LibTomMath. Check out these comparisons on a 1.3Ghz Athlon XP, optimized for size,
768-bit, 4 vs. 10
1024-bit, 8 vs. 18
1280-bit, 12 vs. 34
1536-bit, 20 vs. 56
1792-bit 28 vs. 88
2048-bit, 40 vs. 124
2560-bit, 71 vs. 234
3072-bit, 113 vs. 386
4096-bit, 283 vs. 916
Times are all in milliseconds for key generation. New primes times on the left. This makes the code binary
incompatible with previous releases. However, this addition is long overdue as LibTomMath has supported DR
reductions for quite some time.
-- Added RIPE-MD 128 and 160 to the list of supported hashes [10 in total].
-- The project has been released as public domain. TDCAL no longer applies.
July 15th, 2003
v0.89 -- Fix a bug in bits.c which would prevent it from building with msvc
-- Merged in LibTomMath v0.24 [and I used the alloc/free macros this time!]
-- Removed the LTC version of next_prime() and replaced it with a call to the
mp_prime_next_prime() from LibTomMath
-- reverted bits.c to the 0.86 copy since the new one doesn't build in MSVC
or cygwin.
Jul 10th, 2003
v0.88 -- Sped up CAST5 key schedule for MSVC
-- added "ulong32" which allows people on 64-bit platforms to force the 32-bit tables in
ciphers like blowfish and AES to be 32-bits. E.g. when unsigned long is 64-bits.
-- Optimized the SAFER-SK64, SAFER-SK128, SAFER+, RC5 and RC6 key schedule [big time!]
-- Optimized SHA-1 and SHA-256 quite a bit too.
-- Fixed up the makefile to use -fomit-frame-pointer more liberally
-- Added tv_gen program which makes test vectors for ciphers/hashes
-- Merged in LibTomMath v0.22
Jun 19th, 2003
v0.87 -- Many MSVC optimizations to the code base
-- Improved the AES and Twofish key schedule [faster, more constant time]
-- Tons of optimizations here and there.
Jun 15th, 2003
v0.86 -- Fixed up AES to workaround MSVC optimizer bug
-- Merged in fresh LTM base [based on v0.20] so there are no warnings with MSVC
-- Wrote x86_prof which will time the hashes and ciphers downto cycles per byte.
-- Fixed up demos/encrypt to remove serpent_desc from the list
-- Re-enabled MSVC optimizations w00t w00t
-- Replaced "errno" with "err" in all functions that had it so it wouldn't clash
with the global "errno"
-- Removed a set of unused variables from certain functions
-- Removed {#line 0 "..."} stuff from mpi.c to comply with ISO C :-)
Jun 11th, 2003
v0.85 -- Swapped in a new AES routine
-- Removed Serpent
-- Added TDCAL policy document
Jun 1st, 2003
v0.84 -- Removed a 4KB buffer from rsa_decrypt_key that wasn't being used no more
-- Fixed another potential buffer problem. Not an overflow but could cause the
PK import routines to read past the end of the buffer.
-- Optimized the ECC mulmod more by removing a if condition that will always be false
-- Optimized prime.c to not include a 2nd prime table, removed code from is_prime calls prime
test from LibTomMath now
-- Added LTC_TEST define which when defined will enable the test vector routines [see mycrypt_custom.h]
-- Removed ampi.o from the depends cuz it ain't no not working in *nix with it [routines are in mpi.c now].
Mar 29th, 2003
v0.83 -- Optimized the ecc_mulmod, it's faster and takes less heap/stack space
-- Fixed a free memory error in ecc_mulmod and del_point which would try to free NULL
-- Fixed two serious bugs in rsa_decrypt_key and rsa_verify_hash that would allow a trivialy
buffer overflow.
-- Fixed a bug in the hmac testing code if you don't register all the hashes it won't return
errors now.
Mar 15th, 2003
v0.82 -- Manual updated
-- Added MSVC makefile [back, actually its written from scratch to work with NMAKE]
-- Change to HMAC helper functions API to avoid buffer overflow [source changes]
-- the rsa_encrypt_key was supposed to reject key sizes out of bounds ...
same fix to the rsa_sign_hash
-- Added code to ensure that that chaining mode code (cfb/ofb/ctr/cbc) have valid
structures when being called. E.g. the indexes to the pad/ivs are not out of bounds
-- Cleaned up the DES code and simplified the core desfunc routine.
-- Simplified one of the boolean functions in MD4
Jan 16th, 2003
v0.81 -- Merged in new makefile from Clay Culver and Mike Frysinger
-- Sped up the ECC mulmod() routine by making the word size adapt to the input. Saves a whopping 9 point
operations on 521-bit keys now (translates to about 8ms on my Athlon XP). I also now use barrett reduction
as much as possible. This sped the routine up quite a bit.
-- Fixed a huge flaw in ecc_verify_hash() where it would return CRYPT_OK on error... Now fixed.
-- Fixed up config.pl by fixing an invalid query and the file is saved in non-windows [e.g. not CR/LF] format
(fix due to Mika Bostr?m)
-- Merged in LibTomMath for kicks
-- Changed the build process so that by default "mycrypt_custom.h" is included and provided
The makefile doesn't include any build options anymore
-- Removed the PS2 and VC makefiles.
Dec 16th, 2002
v0.80 -- Found a change I made to the MPI that is questionable. Not quite a bug but definately not desired. Had todo
with the digit shifting. In v0.79 I simply truncated without zeroing. It didn't cause problems during my
testing but I fixed it up none the less.
-- Optimized s_mp_mul_dig() from MPI to do a minimal number of passes.
-- Fixed in rsa_exptmod() where I was getting the size of the result. Basically it accomplishes the same thing
but the fixed code is more readable.
-- Fixed slight bug in dh_sign_hash() where the random "k" value was 1 byte shorter than it should have been. I've
also made the #define FAST_PK speed up signatures as well. Essentially FAST_PK tells the DH sub-system to
limit any private exponent to 256-bits. Note that when FAST_PK is defined does not make the library
binary or source incompatible with a copy of the library with it undefined.
-- Removed the DSA code. If you want fast diffie-hellman just define FAST_PK :-)
-- Updated dh_sign_hash()/dh_verify_hash() to export "unsigned" bignums. Saves two bytes but is not binary
compatible with the previous release... sorry! I've performed the same fix to the ecc code as well.
-- Fixed up the PK code to remove all use of mp_toraw() and mp_read_raw() [get all the changes out of the way now]
-- Fixed a bug in the DH code where it missed trapping a few errors if they occurred.
-- Fixed a slight "its-not-a-bug-but-could-be-done-better" bug in the next_prime() function. Essentially it was
testing to ensure that in the loop that searches for the next candidate that the step never grows beyond
65000. Should have been testing for MP_DIGIT_MAX
-- Spruced up the config.pl script. It now makes a header file "mycrypt_custom.h" which can be included *before*
you include mycrypt.h. This allows you to add libtomcrypt to a project without completely changing your make
system around. Note that you should use the makefile it writes to at least build the library initially.
-- Used splint to check alot of the code out. Tons of minor fixes and explicit casts added.
-- Also made all the internal functions of MPI are now static to avoid poluting the namespace
-- **Notice**: There are no planned future releases for at least a month from the this release date.
Dec 14th, 2002
v0.79 -- Change to PK code [binary and source]. I made it so you have to pass the buffer size to the *_decrypt_key and
*_verify_hash functions. This prevents malformed packets from performing buffer overflows. I've also trimmed
the packet header size [by 4 bytes].
-- Made the test program halt on the first error it occurs. Also made it trap more errors than before.
-- Wrote the first chapter of my new book [DRAFT!], not in this package but check my website!
-- Included a perl script "config.pl" that will make "makefile.out" according to the users needs.
-- Added shell script to look for latest release
-- Merge DH and ECC key defines from mycrypt_cfg.h into the makefiles
-- updated the makefile to use BSD friendly archiving invokations
-- Changed the DH and ECC code to use base64 static key settings [e.g. the primes]. Dropped the code size by 3KB
and is ever-so-slightly faster than before.
-- added "mp_shrink" function to shrink the size of bignums. Specially useful for PK code :-)
-- Added new exptmod function that calculates a^b mod c with fewer multiplies then before [~20% for crypto
sized numbers]. Also added a "low mem" variant that doesn't use more than 20KB [upto 4096 bit nums] of
heap todo the calculation. Both are #define'able controlled
-- Added XREALLOC macro to provide realloc() functionality.
-- Added fix where in rsa_import() if you imported a public key or a non-optimized key it would free the mp_int's
not being used.
-- Fixed potential bug in the ECC code. Only would occur on platforms where char is not eight bits [which isn't
often!]
-- Fixed up the ECC point multiplication, its about 15% faster now
-- While I was at it [since the lib isn't binary backwards compatible anyways] I've fixed the PK export routines
so they export as "unsigned" types saving 1 byte per bignum outputted. Not a lot but heck why not.
Nov 28th, 2002
v0.78 -- Made the default ARGCHK macro a function call instead which reduced the code size from 264KB to 239KB.
-- Fixed a bug in the XTEA keysize function which called ARGCHK incorrectly.
-- Added Noekeon block cipher at 2,800 bytes of object code and 345Mbit/sec it is a welcome addition.
-- Made the KR code check if the other PK systems are included [provides error when building otherwise].
-- Made "aes" an alias for Rijndael via a pre-processor macro. Now you can use "aes_ecb_encrypt", etc... :-)
Thanks to Jean-Luc Cooke for the "buzzword conformance" suggestion.
-- Removed the old PK code entirely (e.g. rsa_sign, dh_encrypt). The *_sign_hash and *_encrypt_key functions
are all that is to remain.
-- **NOTE** Changed the PK *_import (including the keyring) routine to accept a "inlen" parameter. This fixes a
bug where improperly made key packets could result in reading passed the end of the buffer. This means
the code is no longer source compatible but still binary compatible.
-- Fixed a few other minor bugs in the PK import code while I was at it.
Nov 26th, 2002
v0.77 -- Updated the XTEA code to use pre-computed keys. With optimizations for speed it achieves 222Mbit/sec
compared to the 121Mbit/sec before. It is 288 bytes bigger than before.
-- Cleaned up some of the ciphers and hashes (coding style, cosmetic changes)
-- Optimized AES slightly for 256-bit keys [only one if statement now, still two for 192-bit keys]
-- Removed most test cases from Blowfish, left three of them there. Makes it smaller and faster to test.
-- Changed the primality routines around. I now use 8 rounds of Rabin-Miller, I use 256 primes in the sieve
step and the "rand_prime" function uses a modified sieve that avoids alot of un-needed bignum work.
-- Fixed a bug in the ECC/DH signatures where the keys "setting" value was not checked for validity. This means
that a invalid value could have caused segfaults, etc...
-- **NOTE** Changed the way the ECC/DH export/import functions work. They are source but not binary compatible
with v0.76. Essentially insteading of exporting the setting index like before I export the key size. Now
if you ever re-configure which key settings are supported the lib will still be able to make use of your
keys.
-- Optimized Blowfish by inlining the round function, unrolling it for four rounds then using a for loop for the
rest. It achieves a rate of 425Mbit/sec with the new code compared to 314Mbit/sec before. The new blowfish
object file is 7,813 bytes compared to 8,663 before and is 850 bytes smaller. So the code is both smaller and
faster!
-- Optimized Twofish as well by inlining the round function. Gets ~400Mbit/sec compared to 280Mbit/sec before
and the code is only 78 bytes larger than the previous copy.
-- Removed SMALL_PRIME_TAB build option. I use the smaller table always.
-- Fixed some mistakes concerning prime generation in the manual.
-- [Note: sizes/speeds are for GCC 3.2 on an x86 Athlon XP @ 1.53Ghz]
Nov 25th, 2002
v0.76 -- Updated makefiles a bit more, use "-Os" instead of "-O2" to optimize for size. Got the lib
downto 265KB using GCC 3.2 on my x86 box.
-- Updated the SAFER+, Twofish and Rijndael test vector routine to use the table driven design.
-- Updated all other test vector routines to return as soon as an error is found
-- fixed a bug in the test program where errors in the hash test routines would not be reported
correctly. I found this by temporarily changing one of the bytes of the test vectors. All the
hashes check out [the demos/test.c would still have reported an error, just the wrong one].
Nov 24th, 2002
v0.75 -- Fixed a flaw in hash_filehandle, it should ARGCHK that the filehandle is not NULL
-- Fixed a bug where in hash_file if the call to hash_filehandle failed the open file would
not be closed.
-- Added more strict rules to build process, starting to weed out "oh this works in GCC" style code
In the next release "-Wconversion" will be enabled which will deal with all implicit casts.
Nov 22nd, 2002 [later in the day]
v0.74 -- Wrote a small variant of SAFER+ which shaved 50KB off the size of the library on x86 platforms
-- Wrote a build option to remove the PK packet functions [keeps the encrypt_key/sign_hash functions]
-- Wrote a small variant of Rijndael (trimmed 13KB)
-- Trimmed the TIGER/192 hash function a bit
-- Overall the entire lib compiled is 295KB [down from 400KB before]
-- Fixed a few minor oversights in the MSVC makefile
Nov 22nd, 2002
v0.73 -- Fixed bug in RC4 code where it could only use 255 byte keys.
-- Fixed bug in yarrow code where it would allow cast5 or md2 to be used with it...
-- Removed the ecc compress/expand points from the global scope. Reduces namespace polution
-- Fixed bug where if you used the SPRNG you couldn't pass NULL as your prng_state which you should be
able todo since the SPRNG has no state...
-- Corrected some oversights in the manual and the examples...
-- By default the GF(2^W) math library is excluded from the build. The source is maintained because I wrote it
and like it :-). This way the built library is a tad smaller
-- the MSVC makefile will now build for a SPACE optimized library rather than TIME optimized.
Nov 21th, 2002
v0.72 -- Fixed bug in the prime testing. In the Miller-Rabin test I was raising the base to "N-1" not "r".
The math still worked out fine because in effect it was performing a Fermat test. Tested the new code and it
works properly
-- Fixed some of the code where it was still using the old error syntax
-- Sped up the RSA decrypt/sign routines
-- Optimized the ecc_shared_secret routine to not use so much stack
-- Fixed up the makefile to make releases where the version # is in the file name and directory it will unzip
to
Nov 19th, 2002
v0.71 -- HELP TOM. I need tuition for the January semester. Now I don't want to force donations [nor will I ever]
but I really need the help! See my website http://tom.iahu.ca/help_tom.html for more details. Please help
if you can!
--------------------------------------------------------------------------------------------------------------
-- Officially the library is no longer supported in GCC 3.2 in windows [cygwin].
In windows you can either use GCC 2.95.3 or try your luck with 3.2 It seems that
"-fomit-frame-pointer" is broken in the windows build [but not the linux x86 build???]
If you simply must use 3.2 then I suggest you limit the optimizations to simply "-O2"
-- Started new error handling API. Similar to the previous except there are more error codes than just
CRYPT_ERROR
-- Added my implementation of the MD2 hash function [despite the errors in the RFC I managed to get it right!]
-- Merged in more changes from Sky Schulz. I have to make mention here that he has been a tremendous help in
getting me motivated to make some much needed updates to the library!
-- Fixed one of the many mistakes in the manual as pointed out by Daniel Richards
-- Fixed a bug in the RC4 code [wasn't setting up the key correctly]
-- Added my implementation of the CAST5 [aka CAST-128] block cipher (conforms...)
-- Fixed numerous bugs in the PK code. Essentially I was "freeing" keys when the import failed. This is neither
required nor a good a idea [double free].
-- Tom needs a job.