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- #ifndef OSSL_CRYPTO_POLY1305_H
- # define OSSL_CRYPTO_POLY1305_H
- # pragma once
- #include <stddef.h>
- #define POLY1305_BLOCK_SIZE 16
- #define POLY1305_DIGEST_SIZE 16
- #define POLY1305_KEY_SIZE 32
- typedef struct poly1305_context POLY1305;
- typedef void (*poly1305_blocks_f) (void *ctx, const unsigned char *inp,
- size_t len, unsigned int padbit);
- typedef void (*poly1305_emit_f) (void *ctx, unsigned char mac[16],
- const unsigned int nonce[4]);
- struct poly1305_context {
- double opaque[24];
- unsigned int nonce[4];
- unsigned char data[POLY1305_BLOCK_SIZE];
- size_t num;
- struct {
- poly1305_blocks_f blocks;
- poly1305_emit_f emit;
- } func;
- };
- size_t Poly1305_ctx_size(void);
- void Poly1305_Init(POLY1305 *ctx, const unsigned char key[32]);
- void Poly1305_Update(POLY1305 *ctx, const unsigned char *inp, size_t len);
- void Poly1305_Final(POLY1305 *ctx, unsigned char mac[16]);
- #endif
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