diff options
Diffstat (limited to 'src/crypto')
| -rw-r--r-- | src/crypto/common.h | 76 | ||||
| -rw-r--r-- | src/crypto/rfc6979_hmac_sha256.cpp | 47 | ||||
| -rw-r--r-- | src/crypto/rfc6979_hmac_sha256.h | 36 |
3 files changed, 11 insertions, 148 deletions
diff --git a/src/crypto/common.h b/src/crypto/common.h index 8b04b1f72..580c72f5a 100644 --- a/src/crypto/common.h +++ b/src/crypto/common.h @@ -11,110 +11,56 @@ #include <stdint.h> -#if defined(HAVE_ENDIAN_H) -#include <endian.h> -#endif +#include "compat/endian.h" + +uint16_t static inline ReadLE16(const unsigned char* ptr) +{ + return le16toh(*((uint16_t*)ptr)); +} uint32_t static inline ReadLE32(const unsigned char* ptr) { -#if HAVE_DECL_LE32TOH == 1 return le32toh(*((uint32_t*)ptr)); -#elif !defined(WORDS_BIGENDIAN) - return *((uint32_t*)ptr); -#else - return ((uint32_t)ptr[3] << 24 | (uint32_t)ptr[2] << 16 | (uint32_t)ptr[1] << 8 | (uint32_t)ptr[0]); -#endif } uint64_t static inline ReadLE64(const unsigned char* ptr) { -#if HAVE_DECL_LE64TOH == 1 return le64toh(*((uint64_t*)ptr)); -#elif !defined(WORDS_BIGENDIAN) - return *((uint64_t*)ptr); -#else - return ((uint64_t)ptr[7] << 56 | (uint64_t)ptr[6] << 48 | (uint64_t)ptr[5] << 40 | (uint64_t)ptr[4] << 32 | - (uint64_t)ptr[3] << 24 | (uint64_t)ptr[2] << 16 | (uint64_t)ptr[1] << 8 | (uint64_t)ptr[0]); -#endif +} + +void static inline WriteLE16(unsigned char* ptr, uint16_t x) +{ + *((uint16_t*)ptr) = htole16(x); } void static inline WriteLE32(unsigned char* ptr, uint32_t x) { -#if HAVE_DECL_HTOLE32 == 1 *((uint32_t*)ptr) = htole32(x); -#elif !defined(WORDS_BIGENDIAN) - *((uint32_t*)ptr) = x; -#else - ptr[3] = x >> 24; - ptr[2] = x >> 16; - ptr[1] = x >> 8; - ptr[0] = x; -#endif } void static inline WriteLE64(unsigned char* ptr, uint64_t x) { -#if HAVE_DECL_HTOLE64 == 1 *((uint64_t*)ptr) = htole64(x); -#elif !defined(WORDS_BIGENDIAN) - *((uint64_t*)ptr) = x; -#else - ptr[7] = x >> 56; - ptr[6] = x >> 48; - ptr[5] = x >> 40; - ptr[4] = x >> 32; - ptr[3] = x >> 24; - ptr[2] = x >> 16; - ptr[1] = x >> 8; - ptr[0] = x; -#endif } uint32_t static inline ReadBE32(const unsigned char* ptr) { -#if HAVE_DECL_BE32TOH == 1 return be32toh(*((uint32_t*)ptr)); -#else - return ((uint32_t)ptr[0] << 24 | (uint32_t)ptr[1] << 16 | (uint32_t)ptr[2] << 8 | (uint32_t)ptr[3]); -#endif } uint64_t static inline ReadBE64(const unsigned char* ptr) { -#if HAVE_DECL_BE64TOH == 1 return be64toh(*((uint64_t*)ptr)); -#else - return ((uint64_t)ptr[0] << 56 | (uint64_t)ptr[1] << 48 | (uint64_t)ptr[2] << 40 | (uint64_t)ptr[3] << 32 | - (uint64_t)ptr[4] << 24 | (uint64_t)ptr[5] << 16 | (uint64_t)ptr[6] << 8 | (uint64_t)ptr[7]); -#endif } void static inline WriteBE32(unsigned char* ptr, uint32_t x) { -#if HAVE_DECL_HTOBE32 == 1 *((uint32_t*)ptr) = htobe32(x); -#else - ptr[0] = x >> 24; - ptr[1] = x >> 16; - ptr[2] = x >> 8; - ptr[3] = x; -#endif } void static inline WriteBE64(unsigned char* ptr, uint64_t x) { -#if HAVE_DECL_HTOBE64 == 1 *((uint64_t*)ptr) = htobe64(x); -#else - ptr[0] = x >> 56; - ptr[1] = x >> 48; - ptr[2] = x >> 40; - ptr[3] = x >> 32; - ptr[4] = x >> 24; - ptr[5] = x >> 16; - ptr[6] = x >> 8; - ptr[7] = x; -#endif } #endif // BITCOIN_CRYPTO_COMMON_H diff --git a/src/crypto/rfc6979_hmac_sha256.cpp b/src/crypto/rfc6979_hmac_sha256.cpp deleted file mode 100644 index a8c971c3b..000000000 --- a/src/crypto/rfc6979_hmac_sha256.cpp +++ /dev/null @@ -1,47 +0,0 @@ -// Copyright (c) 2014 The Bitcoin Core developers -// Distributed under the MIT software license, see the accompanying -// file COPYING or http://www.opensource.org/licenses/mit-license.php. - -#include "crypto/rfc6979_hmac_sha256.h" - -#include <string.h> - -#include <algorithm> - -static const unsigned char zero[1] = {0x00}; -static const unsigned char one[1] = {0x01}; - -RFC6979_HMAC_SHA256::RFC6979_HMAC_SHA256(const unsigned char* key, size_t keylen, const unsigned char* msg, size_t msglen) : retry(false) -{ - memset(V, 0x01, sizeof(V)); - memset(K, 0x00, sizeof(K)); - - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Write(zero, sizeof(zero)).Write(key, keylen).Write(msg, msglen).Finalize(K); - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Finalize(V); - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Write(one, sizeof(one)).Write(key, keylen).Write(msg, msglen).Finalize(K); - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Finalize(V); -} - -RFC6979_HMAC_SHA256::~RFC6979_HMAC_SHA256() -{ - memset(V, 0x01, sizeof(V)); - memset(K, 0x00, sizeof(K)); -} - -void RFC6979_HMAC_SHA256::Generate(unsigned char* output, size_t outputlen) -{ - if (retry) { - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Write(zero, sizeof(zero)).Finalize(K); - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Finalize(V); - } - - while (outputlen > 0) { - CHMAC_SHA256(K, sizeof(K)).Write(V, sizeof(V)).Finalize(V); - size_t len = std::min(outputlen, sizeof(V)); - memcpy(output, V, len); - output += len; - outputlen -= len; - } - - retry = true; -} diff --git a/src/crypto/rfc6979_hmac_sha256.h b/src/crypto/rfc6979_hmac_sha256.h deleted file mode 100644 index f3a54a5d1..000000000 --- a/src/crypto/rfc6979_hmac_sha256.h +++ /dev/null @@ -1,36 +0,0 @@ -// Copyright (c) 2014 The Bitcoin Core developers -// Distributed under the MIT software license, see the accompanying -// file COPYING or http://www.opensource.org/licenses/mit-license.php. - -#ifndef BITCOIN_RFC6979_HMAC_SHA256_H -#define BITCOIN_RFC6979_HMAC_SHA256_H - -#include "crypto/hmac_sha256.h" - -#include <stdint.h> -#include <stdlib.h> - -/** The RFC 6979 PRNG using HMAC-SHA256. */ -class RFC6979_HMAC_SHA256 -{ -private: - unsigned char V[CHMAC_SHA256::OUTPUT_SIZE]; - unsigned char K[CHMAC_SHA256::OUTPUT_SIZE]; - bool retry; - -public: - /** - * Construct a new RFC6979 PRNG, using the given key and message. - * The message is assumed to be already hashed. - */ - RFC6979_HMAC_SHA256(const unsigned char* key, size_t keylen, const unsigned char* msg, size_t msglen); - - /** - * Generate a byte array. - */ - void Generate(unsigned char* output, size_t outputlen); - - ~RFC6979_HMAC_SHA256(); -}; - -#endif // BITCOIN_RFC6979_HMAC_SHA256_H |