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/*
* BLAKE2 reference source code package - reference C implementations
*
* Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
* You may use this under the terms of the CC0, the OpenSSL Licence, or the
* Apache Public License 2.0, at your option. The terms of these licenses can
* be found at:
*
* - OpenSSL license : https://www.openssl.org/source/license.html
* - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
* - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
*
* More information about the BLAKE2 hash function can be found at
* https://blake2.net.
*/
/* crypto/blake2/blake2_impl.h */
#include <stdint.h>
#include <string.h>
static inline uint32_t load32(const void *src)
{
#if defined(L_ENDIAN)
uint32_t w;
memcpy(&w, src, sizeof(w));
return w;
#else
const uint8_t *p = (const uint8_t *)src;
uint32_t w = *p++;
w |= (uint32_t)(*p++) << 8;
w |= (uint32_t)(*p++) << 16;
w |= (uint32_t)(*p++) << 24;
return w;
#endif
}
static inline uint64_t load64(const void *src)
{
#if defined(L_ENDIAN)
uint64_t w;
memcpy(&w, src, sizeof(w));
return w;
#else
const uint8_t *p = (const uint8_t *)src;
uint64_t w = *p++;
w |= (uint64_t)(*p++) << 8;
w |= (uint64_t)(*p++) << 16;
w |= (uint64_t)(*p++) << 24;
w |= (uint64_t)(*p++) << 32;
w |= (uint64_t)(*p++) << 40;
w |= (uint64_t)(*p++) << 48;
w |= (uint64_t)(*p++) << 56;
return w;
#endif
}
static inline void store32(void *dst, uint32_t w)
{
#if defined(L_ENDIAN)
memcpy(dst, &w, sizeof(w));
#else
uint8_t *p = (uint8_t *)dst;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
#endif
}
static inline void store64(void *dst, uint64_t w)
{
#if defined(L_ENDIAN)
memcpy(dst, &w, sizeof(w));
#else
uint8_t *p = (uint8_t *)dst;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
#endif
}
static inline uint64_t load48(const void *src)
{
const uint8_t *p = (const uint8_t *)src;
uint64_t w = *p++;
w |= (uint64_t)(*p++) << 8;
w |= (uint64_t)(*p++) << 16;
w |= (uint64_t)(*p++) << 24;
w |= (uint64_t)(*p++) << 32;
w |= (uint64_t)(*p++) << 40;
return w;
}
static inline void store48(void *dst, uint64_t w)
{
uint8_t *p = (uint8_t *)dst;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
w >>= 8;
*p++ = (uint8_t)w;
}
static inline uint32_t rotl32(const uint32_t w, const unsigned c)
{
return (w << c) | (w >> (32 - c));
}
static inline uint64_t rotl64(const uint64_t w, const unsigned c)
{
return (w << c) | (w >> (64 - c));
}
static inline uint32_t rotr32(const uint32_t w, const unsigned c)
{
return (w >> c) | (w << (32 - c));
}
static inline uint64_t rotr64(const uint64_t w, const unsigned c)
{
return (w >> c) | (w << (64 - c));
}
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