lcx_blake2.h

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/*******************************************************************************
 *   Ledger Nano S - Secure firmware
 *   (c) 2022 Ledger
 *
 *  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.
 ********************************************************************************/
 
#ifndef LCX_BLAKE2_H
#define LCX_BLAKE2_H
 
#ifdef HAVE_BLAKE2
 
#include "lcx_wrappers.h"
#include "lcx_hash.h"
#include <stddef.h>
#include <stdint.h>
 
#define CX_BLAKE2B_256_SIZE 32
 
#define CX_BLAKE2B_512_SIZE 64
 
enum blake2b_constant {
    BLAKE2B_BLOCKBYTES    = 128,  
    BLAKE2B_OUTBYTES      = 64,   
    BLAKE2B_KEYBYTES      = 64,   
    BLAKE2B_SALTBYTES     = 16,   
    BLAKE2B_PERSONALBYTES = 16    
};
 
struct blake2b_state__ {
    uint64_t h[8];                     
    uint64_t t[2];                     
    uint64_t f[2];                     
    uint8_t  buf[BLAKE2B_BLOCKBYTES];  
    size_t   buflen;                   
    size_t   outlen;                   
    uint8_t  last_node;                
};
typedef struct blake2b_state__ blake2b_state;
 
struct cx_blake2b_s {
    struct cx_hash_header_s header;       
    size_t                  output_size;  
    struct blake2b_state__  ctx;          
};
typedef struct cx_blake2b_s cx_blake2b_t;
 
WARN_UNUSED_RESULT cx_err_t cx_blake2b_init_no_throw(cx_blake2b_t *hash, size_t out_len);
 
DEPRECATED static inline int cx_blake2b_init(cx_blake2b_t *hash, unsigned int out_len)
{
    CX_THROW(cx_blake2b_init_no_throw(hash, out_len));
    return CX_BLAKE2B;
}
 
cx_err_t cx_blake2b_256_hash_iovec(const cx_iovec_t *iovec,
                                   size_t            iovec_len,
                                   uint8_t           digest[static CX_BLAKE2B_256_SIZE]);
 
static inline cx_err_t cx_blake2b_256_hash(const uint8_t *in,
                                           size_t         in_len,
                                           uint8_t        digest[static CX_BLAKE2B_256_SIZE])
{
    const cx_iovec_t iovec = {.iov_base = in, .iov_len = in_len};
 
    return cx_blake2b_256_hash_iovec(&iovec, 1, digest);
}
 
cx_err_t cx_blake2b_512_hash_iovec(const cx_iovec_t *iovec,
                                   size_t            iovec_len,
                                   uint8_t           digest[static CX_BLAKE2B_512_SIZE]);
 
static inline cx_err_t cx_blake2b_512_hash(const uint8_t *in,
                                           size_t         in_len,
                                           uint8_t        digest[static CX_BLAKE2B_512_SIZE])
{
    const cx_iovec_t iovec = {.iov_base = in, .iov_len = in_len};
 
    return cx_blake2b_512_hash_iovec(&iovec, 1, digest);
}
 
WARN_UNUSED_RESULT cx_err_t cx_blake2b_init2_no_throw(cx_blake2b_t *hash,
                                                      size_t        out_len,
                                                      uint8_t      *salt,
                                                      size_t        salt_len,
                                                      uint8_t      *perso,
                                                      size_t        perso_len);
 
DEPRECATED static inline int cx_blake2b_init2(cx_blake2b_t  *hash,
                                              unsigned int   out_len,
                                              unsigned char *salt,
                                              unsigned int   salt_len,
                                              unsigned char *perso,
                                              unsigned int   perso_len)
{
    CX_THROW(cx_blake2b_init2_no_throw(hash, out_len, salt, salt_len, perso, perso_len));
    return CX_BLAKE2B;
}
 
#endif  // HAVE_BLAKE2
 
#endif  // LCX_BLAKE2_H