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/*
* Copyright (c) 2020 Doc.ai and/or its affiliates.
* Copyright (c) 2012 Samuel Neves <sneves@dei.uc.pt>.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#ifndef __included_crypto_blake2s_h__
#define __included_crypto_blake2s_h__
#include <vlib/vlib.h>
#if defined(_MSC_VER)
#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
#else
#define BLAKE2_PACKED(x) x __attribute__((packed))
#endif
enum blake2s_constant
{
BLAKE2S_BLOCK_BYTES = 64,
BLAKE2S_OUT_BYTES = 32,
BLAKE2S_KEY_BYTES = 32,
BLAKE2S_HASH_SIZE = BLAKE2S_OUT_BYTES,
BLAKE2S_SALT_BYTES = 8,
BLAKE2S_PERSONAL_BYTES = 8
};
typedef struct blake2s_state
{
uint32_t h[8];
uint32_t t[2];
uint32_t f[2];
uint8_t buf[BLAKE2S_BLOCK_BYTES];
size_t buflen;
size_t outlen;
uint8_t last_node;
} blake2s_state_t;
BLAKE2_PACKED (struct blake2s_param
{
uint8_t digest_length; /* 1 */
uint8_t key_length; /* 2 */
uint8_t fanout; /* 3 */
uint8_t depth; /* 4 */
uint32_t leaf_length; /* 8 */
uint32_t node_offset; /* 12 */
uint16_t xof_length; /* 14 */
uint8_t node_depth; /* 15 */
uint8_t inner_length; /* 16 */
/* uint8_t reserved[0]; */
uint8_t salt[BLAKE2S_SALT_BYTES]; /* 24 */
uint8_t personal[BLAKE2S_PERSONAL_BYTES]; /* 32 */
});
typedef struct blake2s_param blake2s_param_t;
/* Streaming API */
int blake2s_init (blake2s_state_t * S, size_t outlen);
int blake2s_init_key (blake2s_state_t * S, size_t outlen, const void *key,
size_t keylen);
int blake2s_init_param (blake2s_state_t * S, const blake2s_param_t * P);
int blake2s_update (blake2s_state_t * S, const void *in, size_t inlen);
int blake2s_final (blake2s_state_t * S, void *out, size_t outlen);
int blake2s (void *out, size_t outlen, const void *in, size_t inlen,
const void *key, size_t keylen);
#endif /* __included_crypto_blake2s_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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