mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-20 05:28:01 +00:00
266 lines
9.7 KiB
C++
266 lines
9.7 KiB
C++
// Code taken from NaCl by D. J. Bernstein and others
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// Public domain
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/*
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20080913
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D. J. Bernstein
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Public domain.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "SHA512.hpp"
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#include "Utils.hpp"
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#ifdef __APPLE__
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#include <CommonCrypto/CommonDigest.h>
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#define ZT_HAVE_NATIVE_SHA512
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namespace ZeroTier {
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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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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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}
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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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#define ZT_HAVE_NATIVE_SHA512
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namespace ZeroTier {
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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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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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}
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#endif
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#ifndef ZT_HAVE_NATIVE_SHA512
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namespace ZeroTier {
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namespace {
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static inline void sha512_encode(uint64_t input, uint8_t *output, uint32_t idx)
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{
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output[idx + 0] = (uint8_t)(input >> 56);
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output[idx + 1] = (uint8_t)(input >> 48);
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output[idx + 2] = (uint8_t)(input >> 40);
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output[idx + 3] = (uint8_t)(input >> 32);
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output[idx + 4] = (uint8_t)(input >> 24);
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output[idx + 5] = (uint8_t)(input >> 16);
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output[idx + 6] = (uint8_t)(input >> 8);
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output[idx + 7] = (uint8_t)(input >> 0);
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}
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static inline void sha512_decode(uint64_t *output, uint8_t *input, uint32_t idx)
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{
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*output = ((uint64_t)input[idx + 0] << 56)
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| ((uint64_t)input[idx + 1] << 48)
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| ((uint64_t)input[idx + 2] << 40)
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| ((uint64_t)input[idx + 3] << 32)
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| ((uint64_t)input[idx + 4] << 24)
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| ((uint64_t)input[idx + 5] << 16)
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| ((uint64_t)input[idx + 6] << 8)
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| ((uint64_t)input[idx + 7] << 0);
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}
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typedef struct sha512_ctx_tag {
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uint32_t is_sha384;
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uint8_t block[128];
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uint64_t len[2];
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uint64_t val[8];
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uint8_t *payload_addr;
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uint64_t payload_len;
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} sha512_ctx_t;
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#define LSR(x,n) (x >> n)
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#define ROR(x,n) (LSR(x,n) | (x << (64 - n)))
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#define MA(x,y,z) ((x & y) | (z & (x | y)))
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#define CH(x,y,z) (z ^ (x & (y ^ z)))
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#define GAMMA0(x) (ROR(x, 1) ^ ROR(x, 8) ^ LSR(x, 7))
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#define GAMMA1(x) (ROR(x,19) ^ ROR(x,61) ^ LSR(x, 6))
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#define SIGMA0(x) (ROR(x,28) ^ ROR(x,34) ^ ROR(x,39))
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#define SIGMA1(x) (ROR(x,14) ^ ROR(x,18) ^ ROR(x,41))
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#define INIT_COMPRESSOR() uint64_t tmp0 = 0, tmp1 = 0
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#define COMPRESS( a, b, c, d, e, f, g, h, x, k) \
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tmp0 = h + SIGMA1(e) + CH(e,f,g) + k + x; \
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tmp1 = SIGMA0(a) + MA(a,b,c); d += tmp0; h = tmp0 + tmp1;
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static const uint8_t sha512_padding[128] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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static const uint64_t K[80] = {
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0x428A2F98D728AE22ULL, 0x7137449123EF65CDULL, 0xB5C0FBCFEC4D3B2FULL, 0xE9B5DBA58189DBBCULL,
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0x3956C25BF348B538ULL, 0x59F111F1B605D019ULL, 0x923F82A4AF194F9BULL, 0xAB1C5ED5DA6D8118ULL,
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0xD807AA98A3030242ULL, 0x12835B0145706FBEULL, 0x243185BE4EE4B28CULL, 0x550C7DC3D5FFB4E2ULL,
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0x72BE5D74F27B896FULL, 0x80DEB1FE3B1696B1ULL, 0x9BDC06A725C71235ULL, 0xC19BF174CF692694ULL,
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0xE49B69C19EF14AD2ULL, 0xEFBE4786384F25E3ULL, 0x0FC19DC68B8CD5B5ULL, 0x240CA1CC77AC9C65ULL,
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0x2DE92C6F592B0275ULL, 0x4A7484AA6EA6E483ULL, 0x5CB0A9DCBD41FBD4ULL, 0x76F988DA831153B5ULL,
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0x983E5152EE66DFABULL, 0xA831C66D2DB43210ULL, 0xB00327C898FB213FULL, 0xBF597FC7BEEF0EE4ULL,
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0xC6E00BF33DA88FC2ULL, 0xD5A79147930AA725ULL, 0x06CA6351E003826FULL, 0x142929670A0E6E70ULL,
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0x27B70A8546D22FFCULL, 0x2E1B21385C26C926ULL, 0x4D2C6DFC5AC42AEDULL, 0x53380D139D95B3DFULL,
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0x650A73548BAF63DEULL, 0x766A0ABB3C77B2A8ULL, 0x81C2C92E47EDAEE6ULL, 0x92722C851482353BULL,
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0xA2BFE8A14CF10364ULL, 0xA81A664BBC423001ULL, 0xC24B8B70D0F89791ULL, 0xC76C51A30654BE30ULL,
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0xD192E819D6EF5218ULL, 0xD69906245565A910ULL, 0xF40E35855771202AULL, 0x106AA07032BBD1B8ULL,
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0x19A4C116B8D2D0C8ULL, 0x1E376C085141AB53ULL, 0x2748774CDF8EEB99ULL, 0x34B0BCB5E19B48A8ULL,
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0x391C0CB3C5C95A63ULL, 0x4ED8AA4AE3418ACBULL, 0x5B9CCA4F7763E373ULL, 0x682E6FF3D6B2B8A3ULL,
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0x748F82EE5DEFB2FCULL, 0x78A5636F43172F60ULL, 0x84C87814A1F0AB72ULL, 0x8CC702081A6439ECULL,
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0x90BEFFFA23631E28ULL, 0xA4506CEBDE82BDE9ULL, 0xBEF9A3F7B2C67915ULL, 0xC67178F2E372532BULL,
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0xCA273ECEEA26619CULL, 0xD186B8C721C0C207ULL, 0xEADA7DD6CDE0EB1EULL, 0xF57D4F7FEE6ED178ULL,
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0x06F067AA72176FBAULL, 0x0A637DC5A2C898A6ULL, 0x113F9804BEF90DAEULL, 0x1B710B35131C471BULL,
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0x28DB77F523047D84ULL, 0x32CAAB7B40C72493ULL, 0x3C9EBE0A15C9BEBCULL, 0x431D67C49C100D4CULL,
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0x4CC5D4BECB3E42B6ULL, 0x597F299CFC657E2AULL, 0x5FCB6FAB3AD6FAECULL, 0x6C44198C4A475817ULL
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};
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static inline void sha512_memcpy(uint8_t *src, uint8_t *dst, uint32_t size)
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{
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uint32_t i = 0;
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for (;i < size;i++) { *dst++ = *src++; }
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}
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static inline void sha512_memclr(uint8_t *dst, uint32_t size)
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{
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uint32_t i = 0;
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for (;i < size;i++) { *dst++ = 0; }
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}
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static inline void sha512_init_512(sha512_ctx_t *sha512_ctx, uint8_t *payload_addr, uint64_t payload_len)
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{
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sha512_memclr((uint8_t *)sha512_ctx,sizeof(sha512_ctx_t));
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sha512_ctx->val[0] = 0x6A09E667F3BCC908ULL;
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sha512_ctx->val[1] = 0xBB67AE8584CAA73BULL;
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sha512_ctx->val[2] = 0x3C6EF372FE94F82BULL;
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sha512_ctx->val[3] = 0xA54FF53A5F1D36F1ULL;
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sha512_ctx->val[4] = 0x510E527FADE682D1ULL;
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sha512_ctx->val[5] = 0x9B05688C2B3E6C1FULL;
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sha512_ctx->val[6] = 0x1F83D9ABFB41BD6BULL;
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sha512_ctx->val[7] = 0x5BE0CD19137E2179ULL;
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sha512_ctx->is_sha384 = 0;
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sha512_ctx->payload_addr = payload_addr;
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sha512_ctx->payload_len = (uint64_t)payload_len;
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sha512_ctx->len[0] = payload_len << 3;
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sha512_ctx->len[1] = payload_len >> 61;
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}
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static inline void sha512_init_384(sha512_ctx_t *sha512_ctx, uint8_t *payload_addr, uint64_t payload_len)
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{
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sha512_memclr((uint8_t *)sha512_ctx,sizeof(sha512_ctx_t));
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sha512_ctx->val[0] = 0xCBBB9D5DC1059ED8ULL;
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sha512_ctx->val[1] = 0x629A292A367CD507ULL;
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sha512_ctx->val[2] = 0x9159015A3070DD17ULL;
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sha512_ctx->val[3] = 0x152FECD8F70E5939ULL;
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sha512_ctx->val[4] = 0x67332667FFC00B31ULL;
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sha512_ctx->val[5] = 0x8EB44A8768581511ULL;
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sha512_ctx->val[6] = 0xDB0C2E0D64F98FA7ULL;
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sha512_ctx->val[7] = 0x47B5481DBEFA4FA4ULL;
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sha512_ctx->is_sha384 = 1;
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sha512_ctx->payload_addr = payload_addr;
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sha512_ctx->payload_len = (uint64_t)payload_len;
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sha512_ctx->len[0] = payload_len << 3;
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sha512_ctx->len[1] = payload_len >> 61;
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}
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static inline void sha512_hash_factory(sha512_ctx_t *ctx, uint8_t data[128])
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{
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uint32_t i = 0;
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uint64_t W[80];
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uint64_t v[8];
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INIT_COMPRESSOR();
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for(i = 0; i < 16; i++) { sha512_decode(&W[i], data, i << 3 ); }
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for(; i < 80; i++) { W[i] = GAMMA1(W[i - 2]) + W[i - 7] + GAMMA0(W[i - 15]) + W[i - 16]; }
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for (i = 0;i < 8; i++) { v[i] = ctx->val[i]; }
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for(i = 0; i < 80;) {
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COMPRESS(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], W[i], K[i] ); i++;
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COMPRESS(v[7], v[0], v[1], v[2], v[3], v[4], v[5], v[6], W[i], K[i] ); i++;
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COMPRESS(v[6], v[7], v[0], v[1], v[2], v[3], v[4], v[5], W[i], K[i] ); i++;
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COMPRESS(v[5], v[6], v[7], v[0], v[1], v[2], v[3], v[4], W[i], K[i] ); i++;
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COMPRESS(v[4], v[5], v[6], v[7], v[0], v[1], v[2], v[3], W[i], K[i] ); i++;
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COMPRESS(v[3], v[4], v[5], v[6], v[7], v[0], v[1], v[2], W[i], K[i] ); i++;
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COMPRESS(v[2], v[3], v[4], v[5], v[6], v[7], v[0], v[1], W[i], K[i] ); i++;
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COMPRESS(v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[0], W[i], K[i] ); i++;
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}
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for (i = 0; i < 8; i++) { ctx->val[i] += v[i]; }
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}
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static inline void sha512_stage1(sha512_ctx_t *sha512_ctx)
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{
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while (sha512_ctx->payload_len >= 128) {
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sha512_hash_factory(sha512_ctx, sha512_ctx->payload_addr);
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sha512_ctx->payload_addr += 128;
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sha512_ctx->payload_len -= 128;
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}
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}
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static inline void sha512_stage2(sha512_ctx_t *sha512_ctx, uint8_t output[64])
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{
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uint32_t block_pos = sha512_ctx->payload_len;
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uint32_t padding_bytes = 0;
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uint8_t temp_data[128] = {0};
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uint8_t *temp_data_p = (uint8_t *)&temp_data[0];
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uint8_t len_be[16] = {0};
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uint8_t i = 0;
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sha512_memcpy(sha512_ctx->payload_addr, temp_data_p, sha512_ctx->payload_len);
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padding_bytes = 112 - block_pos;
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temp_data_p += block_pos;
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sha512_memcpy((uint8_t *)sha512_padding, temp_data_p, padding_bytes);
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temp_data_p += padding_bytes;
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sha512_encode(sha512_ctx->len[1], len_be, 0);
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sha512_encode(sha512_ctx->len[0], len_be, 8);
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sha512_memcpy(len_be, temp_data_p, 16);
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sha512_hash_factory(sha512_ctx, temp_data);
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for (i = 0; i < 6; i++) { sha512_encode(sha512_ctx->val[i], output, i * 8); }
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for ( ;(i < 8) && (sha512_ctx->is_sha384 == 0); i++) { sha512_encode(sha512_ctx->val[i], output, i * 8); }
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}
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} // anonymous namespace
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void SHA512(void *digest,const void *data,unsigned int len)
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{
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sha512_ctx_t h;
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sha512_init_512(&h,(uint8_t *)data,len);
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sha512_stage1(&h);
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sha512_stage2(&h,(uint8_t *)digest);
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}
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void SHA384(void *digest,const void *data,unsigned int len)
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{
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sha512_ctx_t h;
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sha512_init_384(&h,(uint8_t *)data,len);
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sha512_stage1(&h);
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sha512_stage2(&h,(uint8_t *)digest);
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}
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} // namespace ZeroTier
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#endif // !ZT_HAVE_NATIVE_SHA512
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extern "C" void ZT_sha512internal(void *digest,const void *data,unsigned int len) { ZeroTier::SHA512(digest,data,len); }
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extern "C" void ZT_sha384internal(void *digest,const void *data,unsigned int len) { ZeroTier::SHA384(digest,data,len); }
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