AWS C Cal

AWS Crypto Abstraction Layer: Cross-Platform, C99 wrapper for cryptography primitives.

License

This library is licensed under the Apache 2.0 License.

Supported Platforms

• Windows (Vista and Later)
• Apple
• Unix (via OpenSSL compatible libcrypto)

Build Instructions

Since this project builds with CMake, you can build with whichever tool you prefer. Here, we show make for simplicity. You can use Visual Studio, XCode, or whatever you'd like via the -G option.

git clone [email protected]:awslabs/aws-c-common
mkdir aws-c-common-build
cd aws-c-common-build
cmake -DCMAKE_PREFIX_PATH=<install path> -DCMAKE_INSTALL_PREFIX=<install path> ../aws-c-common
make
make test
make install

cd ..
git clone [email protected]:awslabs/aws-c-cal
mkdir aws-c-cal-build
cd aws-c-cal-build
cmake -DCMAKE_PREFIX_PATH=<install path> -DCMAKE_INSTALL_PREFIX=<install path> ../aws-c-cal
make
make test
make install

Currently provided algorithms

Hashes

MD5

Streaming

struct aws_hash *hash = aws_md5_new(allocator);
aws_hash_update(hash, &your_buffer);
aws_hash_finalize(hash, &output_buffer, 0);
aws_hash_destroy(hash);

One-Shot

aws_md5_compute(allocator, &your_buffer, &output_buffer, 0);

SHA256

Streaming

struct aws_hash *hash = aws_sha256_new(allocator);
aws_hash_update(hash, &your_buffer);
aws_hash_finalize(hash, &output_buffer, 0);
aws_hash_destroy(hash);

One-Shot

aws_sha256_compute(allocator, &your_buffer, &output_buffer, 0);

HMAC

SHA256 HMAC

Streaming

struct aws_hmac *hmac = aws_sha256_hmac_new(allocator, &secret_buf);
aws_hmac_update(hmac, &your_buffer);
aws_hmac_finalize(hmac, &output_buffer, 0);
aws_hmac_destroy(hmac);

One-Shot

aws_sha256_hmac_compute(allocator, &secret_buf, &your_buffer, &output_buffer, 0);

FAQ

I want more algorithms, what do I do?

Great! So do we! At a minimum, file an issue letting us know. If you want to file a Pull Request, we'd be happy to review and merge it when it's ready.

Who should consume this package directly?

Are you writing C directly? Then you should. Are you using any other programming language? This functionality will be exposed via that language specific crt packages.

I found a security vulnerability in this package. What do I do?

Due to the fact that this package is specifically performing cryptographic operations, please don't file a public issue. Instead, email [email protected], and we'll work with you directly.