diff options
Diffstat (limited to 'providers/implementations/digests/blake2_impl.h')
-rw-r--r-- | providers/implementations/digests/blake2_impl.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/providers/implementations/digests/blake2_impl.h b/providers/implementations/digests/blake2_impl.h new file mode 100644 index 0000000000..52477a8fe2 --- /dev/null +++ b/providers/implementations/digests/blake2_impl.h @@ -0,0 +1,129 @@ +/* + * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (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 + */ + +/* + * Derived from the BLAKE2 reference implementation written by Samuel Neves. + * Copyright 2012, Samuel Neves <sneves@dei.uc.pt> + * More information about the BLAKE2 hash function and its implementations + * can be found at https://blake2.net. + */ + +#include <string.h> + +static ossl_inline uint32_t load32(const uint8_t *src) +{ + const union { + long one; + char little; + } is_endian = { 1 }; + + if (is_endian.little) { + uint32_t w; + memcpy(&w, src, sizeof(w)); + return w; + } else { + uint32_t w = ((uint32_t)src[0]) + | ((uint32_t)src[1] << 8) + | ((uint32_t)src[2] << 16) + | ((uint32_t)src[3] << 24); + return w; + } +} + +static ossl_inline uint64_t load64(const uint8_t *src) +{ + const union { + long one; + char little; + } is_endian = { 1 }; + + if (is_endian.little) { + uint64_t w; + memcpy(&w, src, sizeof(w)); + return w; + } else { + uint64_t w = ((uint64_t)src[0]) + | ((uint64_t)src[1] << 8) + | ((uint64_t)src[2] << 16) + | ((uint64_t)src[3] << 24) + | ((uint64_t)src[4] << 32) + | ((uint64_t)src[5] << 40) + | ((uint64_t)src[6] << 48) + | ((uint64_t)src[7] << 56); + return w; + } +} + +static ossl_inline void store32(uint8_t *dst, uint32_t w) +{ + const union { + long one; + char little; + } is_endian = { 1 }; + + if (is_endian.little) { + memcpy(dst, &w, sizeof(w)); + } else { + uint8_t *p = (uint8_t *)dst; + int i; + + for (i = 0; i < 4; i++) + p[i] = (uint8_t)(w >> (8 * i)); + } +} + +static ossl_inline void store64(uint8_t *dst, uint64_t w) +{ + const union { + long one; + char little; + } is_endian = { 1 }; + + if (is_endian.little) { + memcpy(dst, &w, sizeof(w)); + } else { + uint8_t *p = (uint8_t *)dst; + int i; + + for (i = 0; i < 8; i++) + p[i] = (uint8_t)(w >> (8 * i)); + } +} + +static ossl_inline uint64_t load48(const uint8_t *src) +{ + uint64_t w = ((uint64_t)src[0]) + | ((uint64_t)src[1] << 8) + | ((uint64_t)src[2] << 16) + | ((uint64_t)src[3] << 24) + | ((uint64_t)src[4] << 32) + | ((uint64_t)src[5] << 40); + return w; +} + +static ossl_inline void store48(uint8_t *dst, uint64_t w) +{ + uint8_t *p = (uint8_t *)dst; + p[0] = (uint8_t)w; + p[1] = (uint8_t)(w>>8); + p[2] = (uint8_t)(w>>16); + p[3] = (uint8_t)(w>>24); + p[4] = (uint8_t)(w>>32); + p[5] = (uint8_t)(w>>40); +} + +static ossl_inline uint32_t rotr32(const uint32_t w, const unsigned int c) +{ + return (w >> c) | (w << (32 - c)); +} + +static ossl_inline uint64_t rotr64(const uint64_t w, const unsigned int c) +{ + return (w >> c) | (w << (64 - c)); +} |