openssl/crypto/include/internal/siphash.h
Richard Levitte d74f23d2db SipHash: add separate setter for the hash size
This was originally part of SipHash_Init.  However, there are cases
where there isn't any key material to initialize from when setting the
hash size, and we do allow doing so with a EVP_PKEY control.  The
solution is to provide a separate hash_size setter and to use it in
the corresponding EVP_PKEY_METHOD.

Fixes #7143

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7145)
2018-09-09 01:47:56 +02:00

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C

/*
* Copyright 2017 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
*/
#include <stddef.h>
#define SIPHASH_BLOCK_SIZE 8
#define SIPHASH_KEY_SIZE 16
#define SIPHASH_MIN_DIGEST_SIZE 8
#define SIPHASH_MAX_DIGEST_SIZE 16
typedef struct siphash_st SIPHASH;
size_t SipHash_ctx_size(void);
size_t SipHash_hash_size(SIPHASH *ctx);
int SipHash_set_hash_size(SIPHASH *ctx, size_t hash_size);
int SipHash_Init(SIPHASH *ctx, const unsigned char *k,
int crounds, int drounds);
void SipHash_Update(SIPHASH *ctx, const unsigned char *in, size_t inlen);
int SipHash_Final(SIPHASH *ctx, unsigned char *out, size_t outlen);