mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-24 23:26:41 +00:00
131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
/*
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* Copyright (c)2019 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2023-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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#ifndef ZT_SHA512_HPP
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#define ZT_SHA512_HPP
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#include "Constants.hpp"
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#ifdef __APPLE__
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#include <CommonCrypto/CommonDigest.h>
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#endif
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#ifdef ZT_USE_LIBCRYPTO
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#include <openssl/sha.h>
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#endif
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#define ZT_SHA512_DIGEST_LEN 64
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#define ZT_SHA384_DIGEST_LEN 48
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#define ZT_SHA512_BLOCK_SIZE 128
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#define ZT_SHA384_BLOCK_SIZE 128
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#define ZT_HMACSHA384_LEN 48
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namespace ZeroTier {
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#ifdef __APPLE__
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#define ZT_HAVE_NATIVE_SHA512 1
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static inline void SHA512(void *digest,const void *data,unsigned int len)
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{
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CC_SHA512_CTX ctx;
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CC_SHA512_Init(&ctx);
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CC_SHA512_Update(&ctx,data,len);
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CC_SHA512_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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static inline void SHA384(void *digest,const void *data,unsigned int len)
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{
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CC_SHA512_CTX ctx;
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CC_SHA384_Init(&ctx);
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CC_SHA384_Update(&ctx,data,len);
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CC_SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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static inline void SHA384ab(void *digest,const void *data0,unsigned int len0,const void *data1,unsigned int len1)
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{
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CC_SHA512_CTX ctx;
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CC_SHA384_Init(&ctx);
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CC_SHA384_Update(&ctx,data0,len0);
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CC_SHA384_Update(&ctx,data1,len1);
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CC_SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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#endif
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#ifdef ZT_USE_LIBCRYPTO
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#define ZT_HAVE_NATIVE_SHA512 1
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static inline void SHA512(void *digest,const void *data,unsigned int len)
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{
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SHA512_CTX ctx;
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SHA512_Init(&ctx);
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SHA512_Update(&ctx,data,len);
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SHA512_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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static inline void SHA384(void *digest,const void *data,unsigned int len)
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{
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SHA512_CTX ctx;
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SHA384_Init(&ctx);
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SHA384_Update(&ctx,data,len);
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SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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static inline void SHA384ab(void *digest,const void *data0,unsigned int len0,const void *data1,unsigned int len1)
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{
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SHA512_CTX ctx;
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SHA384_Init(&ctx);
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SHA384_Update(&ctx,data0,len0);
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SHA384_Update(&ctx,data1,len1);
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SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
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}
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#endif
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#ifndef ZT_HAVE_NATIVE_SHA512
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void SHA512(void *digest,const void *data,unsigned int len);
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void SHA384(void *digest,const void *data,unsigned int len);
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void SHA384ab(void *digest,const void *data0,unsigned int len0,const void *data1,unsigned int len1);
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#endif
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static inline void HMACSHA384(const uint8_t key[32],const void *msg,const unsigned int msglen,uint8_t mac[48])
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{
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uint64_t kInPadded[16];
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uint64_t outer[22]; // output padded key | H(input padded key | msg)
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#ifdef ZT_NO_TYPE_PUNNING
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for(int i=0;i<32;++i) ((uint8_t *)kInPadded)[i] = key[i] ^ 0x36;
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for(int i=4;i<16;++i) kInPadded[i] = 0x3636363636363636ULL;
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for(int i=0;i<32;++i) ((uint8_t *)outer)[i] = key[i] ^ 0x5c;
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for(int i=4;i<16;++i) outer[i] = 0x5c5c5c5c5c5c5c5cULL;
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#else
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{
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const uint64_t k0 = ((const uint64_t *)key)[0];
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const uint64_t k1 = ((const uint64_t *)key)[1];
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const uint64_t k2 = ((const uint64_t *)key)[2];
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const uint64_t k3 = ((const uint64_t *)key)[3];
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kInPadded[0] = k0 ^ 0x3636363636363636ULL;
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kInPadded[0] = k1 ^ 0x3636363636363636ULL;
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kInPadded[0] = k2 ^ 0x3636363636363636ULL;
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kInPadded[0] = k3 ^ 0x3636363636363636ULL;
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for(int i=4;i<16;++i) kInPadded[i] = 0x3636363636363636ULL;
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outer[0] = k0 ^ 0x5c5c5c5c5c5c5c5cULL;
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outer[1] = k1 ^ 0x5c5c5c5c5c5c5c5cULL;
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outer[2] = k2 ^ 0x5c5c5c5c5c5c5c5cULL;
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outer[3] = k3 ^ 0x5c5c5c5c5c5c5c5cULL;
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for(int i=4;i<16;++i) outer[i] = 0x5c5c5c5c5c5c5c5cULL;
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}
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#endif
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SHA384ab(((uint8_t *)outer) + 128,kInPadded,128,msg,msglen); // H(input padded key | msg)
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SHA384(mac,outer,176); // H(output padded key | H(input padded key | msg))
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}
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} // namespace ZeroTier
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#endif
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