yCrypt

yCrypt

yCrypt is a simple encryption, decryption & signing package for go.

Contributing

Make sure to install the pre-push hooks.

$ git config core.hooksPath .githooks

Usage

• Sign
  • This function signs a message by calculating an SHA256 hash of the message and signing it using RSA PKCS1v15.
• Verify
  • This function verifies a message by calculating an SHA256 hash of the message and verifying it using RSA PKCS1v15.
• SignCompressEncrypt
  1. Signing of the plaintext using the Sign function.
  2. Compress the plaintext using zstd.
  3. Generation of a random symmetric key.
  4. Encryption of the plaintext using the symmetric key, using XChaCha20Poly1305.
  5. Encryption of the symmetric key using the public key, using RSA PKCS1v15.
• DecryptDecompressVerify
  1. Decryption of the symmetric key using the private key, using RSA PKCS1v15.
  2. Decryption of the ciphertext using the symmetric key, using XChaCha20Poly1305.
  3. Decompression of the plaintext using zstd.
  4. Verification of the plaintext using the Verify function.

Notes

PKCS1v15 will be replaced with OAEP in the future. (This will be a breaking change (and therefore a major version bump)).