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88 lines
2.6 KiB
88 lines
2.6 KiB
/* |
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* Copyright (c)2013-2020 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: 2025-01-01 |
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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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#define ZT_SHA512_DIGEST_SIZE 64 |
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#define ZT_SHA384_DIGEST_SIZE 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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// SHA384 and SHA512 are actually in the standard libraries on MacOS and iOS |
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#ifdef __APPLE__ |
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#define ZT_HAVE_NATIVE_SHA512 1 |
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static ZT_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 ZT_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 ZT_INLINE void SHA384(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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#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 SHA384(void *digest,const void *data0,unsigned int len0,const void *data1,unsigned int len1); |
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#endif |
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/** |
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* Compute HMAC SHA-384 using a 256-bit key |
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* |
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* @param key Secret key |
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* @param msg Message to HMAC |
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* @param msglen Length of message |
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* @param mac Buffer to fill with result |
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*/ |
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void HMACSHA384(const uint8_t key[ZT_SYMMETRIC_KEY_SIZE],const void *msg,unsigned int msglen,uint8_t mac[48]); |
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/** |
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* Compute KBKDF (key-based key derivation function) using HMAC-SHA-384 as a PRF |
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* |
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* @param key Source master key |
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* @param label A label indicating the key's purpose in the ZeroTier system |
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* @param context An arbitrary "context" or zero if not applicable |
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* @param iter Key iteration for generation of multiple keys for the same label/context |
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* @param out Output to receive derived key |
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*/ |
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void KBKDFHMACSHA384(const uint8_t key[ZT_SYMMETRIC_KEY_SIZE],char label,char context,uint32_t iter,uint8_t out[ZT_SYMMETRIC_KEY_SIZE]); |
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} // namespace ZeroTier |
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#endif
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