class Crypto::Poly1305::Fast

• Crypto::Poly1305::Fast
• Crypto::Poly1305::MAC
• Reference
• Object

Overview

Poly1305 message authentication code (pure Crystal limb-arithmetic backend).

Uses 3×44-bit limbs in UInt64 with UInt128 intermediate products, following the poly1305-donna algorithm. Avoids heap-allocated BigInt entirely.

Defined in:

crypto/poly1305/fast.cr

Constructors

• .chacha20(key : Bytes, nonce : Bytes) : self

  Generating the Poly1305 Key Using ChaCha20

• .chacha20(cipher : ChaCha20::Cipher) : self

  Generating the Poly1305 Key Using ChaCha20

• .new(key : Bytes)

  Initializes the Poly1305 context with a given 32-byte key.

• .new(key : String)

  Initializes the Poly1305 context with a given 32-byte hex-encoded key.

Class Method Summary

• .auth(key : Bytes, message : Bytes) : Bytes

  A convenience method to compute a Poly1305 MAC for a single message.

Instance Method Summary

• #final : Bytes

  Finalizes the MAC computation and returns the 16-byte authenticator.

• #key : Bytes
• #update(msg : Bytes)

  Processes a message fragment.

Constructor Detail

Class Method Detail

Instance Method Detail