poly1305.h

All headers

Poly1305.

  1. CRYPTO_poly1305_init
  2. CRYPTO_poly1305_update
  3. CRYPTO_poly1305_finish
typedef uint8_t poly1305_state[512];

CRYPTO_poly1305_init sets up state so that it can be used to calculate an authentication tag with the one-time key key. Note that key is a one-time key and therefore there is no `reset' method because that would enable several messages to be authenticated with the same key.

OPENSSL_EXPORT void CRYPTO_poly1305_init(poly1305_state *state,
                                         const uint8_t key[32]);

CRYPTO_poly1305_update processes in_len bytes from in. It can be called zero or more times after poly1305_init.

OPENSSL_EXPORT void CRYPTO_poly1305_update(poly1305_state *state,
                                           const uint8_t *in, size_t in_len);

CRYPTO_poly1305_finish completes the poly1305 calculation and writes a 16 byte authentication tag to mac.

OPENSSL_EXPORT void CRYPTO_poly1305_finish(poly1305_state *state,
                                           uint8_t mac[16]);