openssl/crypto/poly1305/poly1305_local.h

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2023-05-09 22:08:48 +00:00
/*
* Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
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]; /* large enough to hold internal state, declared
* 'double' to ensure at least 64-bit invariant
* alignment across all platforms and
* configurations */
unsigned int nonce[4];
unsigned char data[POLY1305_BLOCK_SIZE];
size_t num;
struct {
poly1305_blocks_f blocks;
poly1305_emit_f emit;
} func;
};