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Format

ECTester mostly reads/outputs data in either human-readable format or using CSV, YAML or XML, depending on the data.

Test runs

By default test runs are output in a human readable format, however YAML and XML is also supported and can be selected by using the --format option. Also, prefixing the output file name when using the -o/--output option allows to output the same test run in different formats to different files.

For example: --format yaml -o default_output.yaml -o xml:output_file.xml -o text:readable_text_file.txt

The YAML output of the test runs is used to generate the static pages of the tests at https://crocs-muni.github.io/ECTester/.

Notation

In the rest of this documentation the following notation is used

  • p - prime F_p
  • m - binary field exponent F_2^m
    • e1 - largest exponent of the field polynomial
    • e2 - middle exponent of the field polynomial, or 0000 if field poly is a trinomial
    • e3 - smallest exponent (except zero) of the field polynomial, or 0000 if field poly is a trinomial
  • a - a parameter in short Weierstrass curve equation
  • b - b parameter in short Weierstrass curve equation
  • gx - x coordinate of the curve base-point g
  • gy - y coordinate of the curve base-point g
  • n - the base-point order
  • h - the base-point cofactor
  • wx - the x coordinate of the public key
  • wy - the y coordinate of the public key
  • s - the private key value

Curves

Input files for the -c/--curve option should be in CSV, little-endian hexadecimal format. Output of the -e/--export option will also be in this format.

Prime field

p,a,b,gx,gy,n,h

Binary field

m,e1,e2,e3,a,b,gx,gy,n,h

Key material

Input files for the -k/--key, -pub/--public and -priv/--private options should be in CSV, little-endian hexadecimal format.

Keypair

wx,wy,s

Public key

wx,wy

Private key

s

Key generation output(CSV)

Output of the -g/--generate option.

For ECTesterReader this has the format:

index;genTime[milli];exportTime[milli];pubW;privS where pubW is the public key used in ANSI X9.62 format, privS is the private key, genTime is the time required to generate the keypair and exportTime is the time required to export it (recover it from the JavaCard API and send it to the reader).

For ECTesterStandalone this has the format:

index;time[nano];pubW;privS

The string in the brackets denotes the measurement unit used, can be one of milli, micro, nano and also instr for ECTesterStandalone, if the measured duration is instructions.

KeyAgreement output(CSV)

Output of the -dh/--ecdh option.

For ECTesterReader this has the format:

index;time[milli];pubW;privS;secret[SHA1] where pubW is the public key used in ANSI X9.62 format, privS is the private key and secret is the KeyAgreement result. The value in brackets denotes what hash algorithm was used, can be NONE.

For ECTesterStandalone this has the format:

index;time[nano];pubW;privS;secret[SHA1] and the same meaning as for ECTesterReader.

The string in the brackets denotes the measurement unit used, can be one of milli, micro, nano and also instr for ECTesterStandalone, if the measured duration is instructions.

Signature output(CSV)

Output of the -dsa/--ecdsa option.

For ECTesterReader this has the format:

index;signTime[milli];verifyTime[milli];data;pubW;privS;signature[SHA1];nonce;valid where pubW is the public key used in ANSI X9.62 format, privS is the private key, signTime and verifyTime are the durations of the sign and verify operations, data is the signed data (if available), signature is the produced signature, nonce is the k (nonce) value recovered from the signature abd the private key (if possible), valid denotes the verification result. The value in brackets after signature denotes what hash algorithm was used, can be NONE.

For ECTesterStandalone this has the format:

index;signTime[nano];verifyTime[nano];data;pubW;privS;signature[SHA1];nonce;verified and the same meaning as for ECTesterReader.

The string in the brackets denotes the measurement unit used, can be one of milli, micro, nano and also instr for ECTesterStandalone, if the measured duration is instructions.