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@@ -1,367 +1,274 @@
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-// Code taken from NaCl by D. J. Bernstein and others
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-// Public domain
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-
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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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-
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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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+// This code is public domain, taken from a PD crypto source file on GitHub.
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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::hash(void *digest,const void *data,unsigned int len)
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+
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+#ifndef ZT_HAVE_NATIVE_SHA512
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+
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+namespace {
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+
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+struct sha512_state {
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+ uint64_t length,state[8];
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+ unsigned long curlen;
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+ uint8_t buf[128];
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+};
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+
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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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+
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+#define STORE64H(x, y) Utils::storeBigEndian<uint64_t>(y,x)
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+#define LOAD64H(x, y) x = Utils::loadBigEndian<uint64_t>(y)
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+#define ROL64c(x,y) (((x)<<(y)) | ((x)>>(64-(y))))
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+#define ROR64c(x,y) (((x)>>(y)) | ((x)<<(64-(y))))
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+#define Ch(x,y,z) (z ^ (x & (y ^ z)))
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+#define Maj(x,y,z) (((x | y) & z) | (x & y))
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+#define S(x, n) ROR64c(x, n)
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+#define R(x, n) ((x)>>(n))
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+#define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39))
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+#define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41))
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+#define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7))
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+#define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6))
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+
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+static ZT_INLINE void sha512_compress(sha512_state *const md,uint8_t *const buf)
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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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+ uint64_t S[8], W[80], t0, t1;
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+ int i;
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+
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+ for (i = 0; i < 8; i++)
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+ S[i] = md->state[i];
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+ for (i = 0; i < 16; i++)
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+ LOAD64H(W[i], buf + (8*i));
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+ for (i = 16; i < 80; i++)
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+ W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
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+
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+#define RND(a,b,c,d,e,f,g,h,i) \
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+ t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
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+ t1 = Sigma0(a) + Maj(a, b, c); \
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+ d += t0; \
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+ h = t0 + t1;
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+
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+ for (i = 0; i < 80; i += 8) {
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+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
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+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
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+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
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+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
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+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
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+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
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+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
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+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
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+ }
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+
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+ for (i = 0; i < 8; i++)
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+ md->state[i] = md->state[i] + S[i];
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}
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+
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+static ZT_INLINE void sha384_init(sha512_state *const md)
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+{
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+ md->curlen = 0;
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+ md->length = 0;
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+ md->state[0] = 0xcbbb9d5dc1059ed8ULL;
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+ md->state[1] = 0x629a292a367cd507ULL;
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+ md->state[2] = 0x9159015a3070dd17ULL;
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+ md->state[3] = 0x152fecd8f70e5939ULL;
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+ md->state[4] = 0x67332667ffc00b31ULL;
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+ md->state[5] = 0x8eb44a8768581511ULL;
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+ md->state[6] = 0xdb0c2e0d64f98fa7ULL;
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+ md->state[7] = 0x47b5481dbefa4fa4ULL;
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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::hash(void *digest,const void *data,unsigned int len)
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+static ZT_INLINE void sha512_init(sha512_state *const md)
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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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+ md->curlen = 0;
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+ md->length = 0;
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+ md->state[0] = 0x6a09e667f3bcc908ULL;
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+ md->state[1] = 0xbb67ae8584caa73bULL;
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+ md->state[2] = 0x3c6ef372fe94f82bULL;
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+ md->state[3] = 0xa54ff53a5f1d36f1ULL;
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+ md->state[4] = 0x510e527fade682d1ULL;
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+ md->state[5] = 0x9b05688c2b3e6c1fULL;
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+ md->state[6] = 0x1f83d9abfb41bd6bULL;
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+ md->state[7] = 0x5be0cd19137e2179ULL;
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}
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+
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+static void sha512_process(sha512_state *const md,const uint8_t *in,unsigned long inlen)
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+{
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+ while (inlen > 0) {
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+ if (md->curlen == 0 && inlen >= 128) {
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+ sha512_compress(md,(uint8_t *)in);
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+ md->length += 128 * 8;
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+ in += 128;
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+ inlen -= 128;
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+ } else {
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+ unsigned long n = std::min(inlen,(128 - md->curlen));
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+ Utils::copy(md->buf + md->curlen,in,n);
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+ md->curlen += n;
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+ in += n;
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+ inlen -= n;
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+ if (md->curlen == 128) {
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+ sha512_compress(md,md->buf);
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+ md->length += 8*128;
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+ md->curlen = 0;
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+ }
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+ }
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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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+static ZT_INLINE void sha512_done(sha512_state *const md,uint8_t *out)
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+{
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+ int i;
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-namespace ZeroTier {
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+ md->length += md->curlen * 8ULL;
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+ md->buf[md->curlen++] = (uint8_t)0x80;
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+
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+ if (md->curlen > 112) {
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+ while (md->curlen < 128) {
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+ md->buf[md->curlen++] = (uint8_t)0;
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+ }
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+ sha512_compress(md, md->buf);
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+ md->curlen = 0;
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+ }
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+
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+ while (md->curlen < 120) {
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+ md->buf[md->curlen++] = (uint8_t)0;
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+ }
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+
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+ STORE64H(md->length, md->buf+120);
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+ sha512_compress(md, md->buf);
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-#define uint64 uint64_t
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+ for (i = 0; i < 8; i++) {
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+ STORE64H(md->state[i], out+(8*i));
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+ }
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+}
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-#ifdef ZT_NO_TYPE_PUNNING
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+} // anonymous namespace
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-static uint64 load_bigendian(const unsigned char *x)
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+void SHA512(void *digest,const void *data,unsigned int len)
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{
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- return
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- (uint64) (x[7]) \
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- | (((uint64) (x[6])) << 8) \
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- | (((uint64) (x[5])) << 16) \
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- | (((uint64) (x[4])) << 24) \
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- | (((uint64) (x[3])) << 32) \
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- | (((uint64) (x[2])) << 40) \
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- | (((uint64) (x[1])) << 48) \
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- | (((uint64) (x[0])) << 56)
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- ;
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+ sha512_state state;
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+ sha512_init(&state);
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+ sha512_process(&state,(uint8_t *)data,(unsigned long)len);
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+ sha512_done(&state,(uint8_t *)digest);
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}
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-static void store_bigendian(unsigned char *x,uint64 u)
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+void SHA384(void *digest,const void *data,unsigned int len)
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{
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- x[7] = u; u >>= 8;
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- x[6] = u; u >>= 8;
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- x[5] = u; u >>= 8;
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- x[4] = u; u >>= 8;
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- x[3] = u; u >>= 8;
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- x[2] = u; u >>= 8;
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- x[1] = u; u >>= 8;
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- x[0] = u;
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+ uint8_t tmp[64];
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+ sha512_state state;
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+ sha384_init(&state);
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+ sha512_process(&state,(uint8_t *)data,(unsigned long)len);
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+ sha512_done(&state,tmp);
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+ Utils::copy<48>(digest,tmp);
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}
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-#else // !ZT_NO_TYPE_PUNNING
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-
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-#define load_bigendian(x) Utils::ntoh(*((const uint64_t *)(x)))
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-#define store_bigendian(x,u) (*((uint64_t *)(x)) = Utils::hton((u)))
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-
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-#endif // ZT_NO_TYPE_PUNNING
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-
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-#define SHR(x,c) ((x) >> (c))
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-#define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c))))
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-
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-#define Ch(x,y,z) ((x & y) ^ (~x & z))
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-#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
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-#define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
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-#define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
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-#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7))
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-#define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6))
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-
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-#define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0;
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-
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-#define EXPAND \
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- M(w0 ,w14,w9 ,w1 ) \
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- M(w1 ,w15,w10,w2 ) \
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- M(w2 ,w0 ,w11,w3 ) \
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- M(w3 ,w1 ,w12,w4 ) \
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- M(w4 ,w2 ,w13,w5 ) \
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- M(w5 ,w3 ,w14,w6 ) \
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- M(w6 ,w4 ,w15,w7 ) \
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- M(w7 ,w5 ,w0 ,w8 ) \
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- M(w8 ,w6 ,w1 ,w9 ) \
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- M(w9 ,w7 ,w2 ,w10) \
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- M(w10,w8 ,w3 ,w11) \
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- M(w11,w9 ,w4 ,w12) \
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- M(w12,w10,w5 ,w13) \
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- M(w13,w11,w6 ,w14) \
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- M(w14,w12,w7 ,w15) \
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- M(w15,w13,w8 ,w0 )
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-
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-#define F(w,k) \
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- T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \
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- T2 = Sigma0(a) + Maj(a,b,c); \
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- h = g; \
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- g = f; \
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- f = e; \
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- e = d + T1; \
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- d = c; \
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- c = b; \
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- b = a; \
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- a = T1 + T2;
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-
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-static inline int crypto_hashblocks(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
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+void SHA384(void *digest,const void *data0,unsigned int len0,const void *data1,unsigned int len1)
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{
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- uint64 state[8];
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- uint64 a;
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- uint64 b;
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- uint64 c;
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- uint64 d;
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- uint64 e;
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- uint64 f;
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- uint64 g;
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- uint64 h;
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- uint64 T1;
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- uint64 T2;
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-
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- a = load_bigendian(statebytes + 0); state[0] = a;
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- b = load_bigendian(statebytes + 8); state[1] = b;
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- c = load_bigendian(statebytes + 16); state[2] = c;
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- d = load_bigendian(statebytes + 24); state[3] = d;
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- e = load_bigendian(statebytes + 32); state[4] = e;
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- f = load_bigendian(statebytes + 40); state[5] = f;
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- g = load_bigendian(statebytes + 48); state[6] = g;
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- h = load_bigendian(statebytes + 56); state[7] = h;
|
|
|
-
|
|
|
- while (inlen >= 128) {
|
|
|
- uint64 w0 = load_bigendian(in + 0);
|
|
|
- uint64 w1 = load_bigendian(in + 8);
|
|
|
- uint64 w2 = load_bigendian(in + 16);
|
|
|
- uint64 w3 = load_bigendian(in + 24);
|
|
|
- uint64 w4 = load_bigendian(in + 32);
|
|
|
- uint64 w5 = load_bigendian(in + 40);
|
|
|
- uint64 w6 = load_bigendian(in + 48);
|
|
|
- uint64 w7 = load_bigendian(in + 56);
|
|
|
- uint64 w8 = load_bigendian(in + 64);
|
|
|
- uint64 w9 = load_bigendian(in + 72);
|
|
|
- uint64 w10 = load_bigendian(in + 80);
|
|
|
- uint64 w11 = load_bigendian(in + 88);
|
|
|
- uint64 w12 = load_bigendian(in + 96);
|
|
|
- uint64 w13 = load_bigendian(in + 104);
|
|
|
- uint64 w14 = load_bigendian(in + 112);
|
|
|
- uint64 w15 = load_bigendian(in + 120);
|
|
|
-
|
|
|
- F(w0 ,0x428a2f98d728ae22ULL)
|
|
|
- F(w1 ,0x7137449123ef65cdULL)
|
|
|
- F(w2 ,0xb5c0fbcfec4d3b2fULL)
|
|
|
- F(w3 ,0xe9b5dba58189dbbcULL)
|
|
|
- F(w4 ,0x3956c25bf348b538ULL)
|
|
|
- F(w5 ,0x59f111f1b605d019ULL)
|
|
|
- F(w6 ,0x923f82a4af194f9bULL)
|
|
|
- F(w7 ,0xab1c5ed5da6d8118ULL)
|
|
|
- F(w8 ,0xd807aa98a3030242ULL)
|
|
|
- F(w9 ,0x12835b0145706fbeULL)
|
|
|
- F(w10,0x243185be4ee4b28cULL)
|
|
|
- F(w11,0x550c7dc3d5ffb4e2ULL)
|
|
|
- F(w12,0x72be5d74f27b896fULL)
|
|
|
- F(w13,0x80deb1fe3b1696b1ULL)
|
|
|
- F(w14,0x9bdc06a725c71235ULL)
|
|
|
- F(w15,0xc19bf174cf692694ULL)
|
|
|
-
|
|
|
- EXPAND
|
|
|
-
|
|
|
- F(w0 ,0xe49b69c19ef14ad2ULL)
|
|
|
- F(w1 ,0xefbe4786384f25e3ULL)
|
|
|
- F(w2 ,0x0fc19dc68b8cd5b5ULL)
|
|
|
- F(w3 ,0x240ca1cc77ac9c65ULL)
|
|
|
- F(w4 ,0x2de92c6f592b0275ULL)
|
|
|
- F(w5 ,0x4a7484aa6ea6e483ULL)
|
|
|
- F(w6 ,0x5cb0a9dcbd41fbd4ULL)
|
|
|
- F(w7 ,0x76f988da831153b5ULL)
|
|
|
- F(w8 ,0x983e5152ee66dfabULL)
|
|
|
- F(w9 ,0xa831c66d2db43210ULL)
|
|
|
- F(w10,0xb00327c898fb213fULL)
|
|
|
- F(w11,0xbf597fc7beef0ee4ULL)
|
|
|
- F(w12,0xc6e00bf33da88fc2ULL)
|
|
|
- F(w13,0xd5a79147930aa725ULL)
|
|
|
- F(w14,0x06ca6351e003826fULL)
|
|
|
- F(w15,0x142929670a0e6e70ULL)
|
|
|
-
|
|
|
- EXPAND
|
|
|
-
|
|
|
- F(w0 ,0x27b70a8546d22ffcULL)
|
|
|
- F(w1 ,0x2e1b21385c26c926ULL)
|
|
|
- F(w2 ,0x4d2c6dfc5ac42aedULL)
|
|
|
- F(w3 ,0x53380d139d95b3dfULL)
|
|
|
- F(w4 ,0x650a73548baf63deULL)
|
|
|
- F(w5 ,0x766a0abb3c77b2a8ULL)
|
|
|
- F(w6 ,0x81c2c92e47edaee6ULL)
|
|
|
- F(w7 ,0x92722c851482353bULL)
|
|
|
- F(w8 ,0xa2bfe8a14cf10364ULL)
|
|
|
- F(w9 ,0xa81a664bbc423001ULL)
|
|
|
- F(w10,0xc24b8b70d0f89791ULL)
|
|
|
- F(w11,0xc76c51a30654be30ULL)
|
|
|
- F(w12,0xd192e819d6ef5218ULL)
|
|
|
- F(w13,0xd69906245565a910ULL)
|
|
|
- F(w14,0xf40e35855771202aULL)
|
|
|
- F(w15,0x106aa07032bbd1b8ULL)
|
|
|
-
|
|
|
- EXPAND
|
|
|
-
|
|
|
- F(w0 ,0x19a4c116b8d2d0c8ULL)
|
|
|
- F(w1 ,0x1e376c085141ab53ULL)
|
|
|
- F(w2 ,0x2748774cdf8eeb99ULL)
|
|
|
- F(w3 ,0x34b0bcb5e19b48a8ULL)
|
|
|
- F(w4 ,0x391c0cb3c5c95a63ULL)
|
|
|
- F(w5 ,0x4ed8aa4ae3418acbULL)
|
|
|
- F(w6 ,0x5b9cca4f7763e373ULL)
|
|
|
- F(w7 ,0x682e6ff3d6b2b8a3ULL)
|
|
|
- F(w8 ,0x748f82ee5defb2fcULL)
|
|
|
- F(w9 ,0x78a5636f43172f60ULL)
|
|
|
- F(w10,0x84c87814a1f0ab72ULL)
|
|
|
- F(w11,0x8cc702081a6439ecULL)
|
|
|
- F(w12,0x90befffa23631e28ULL)
|
|
|
- F(w13,0xa4506cebde82bde9ULL)
|
|
|
- F(w14,0xbef9a3f7b2c67915ULL)
|
|
|
- F(w15,0xc67178f2e372532bULL)
|
|
|
-
|
|
|
- EXPAND
|
|
|
-
|
|
|
- F(w0 ,0xca273eceea26619cULL)
|
|
|
- F(w1 ,0xd186b8c721c0c207ULL)
|
|
|
- F(w2 ,0xeada7dd6cde0eb1eULL)
|
|
|
- F(w3 ,0xf57d4f7fee6ed178ULL)
|
|
|
- F(w4 ,0x06f067aa72176fbaULL)
|
|
|
- F(w5 ,0x0a637dc5a2c898a6ULL)
|
|
|
- F(w6 ,0x113f9804bef90daeULL)
|
|
|
- F(w7 ,0x1b710b35131c471bULL)
|
|
|
- F(w8 ,0x28db77f523047d84ULL)
|
|
|
- F(w9 ,0x32caab7b40c72493ULL)
|
|
|
- F(w10,0x3c9ebe0a15c9bebcULL)
|
|
|
- F(w11,0x431d67c49c100d4cULL)
|
|
|
- F(w12,0x4cc5d4becb3e42b6ULL)
|
|
|
- F(w13,0x597f299cfc657e2aULL)
|
|
|
- F(w14,0x5fcb6fab3ad6faecULL)
|
|
|
- F(w15,0x6c44198c4a475817ULL)
|
|
|
-
|
|
|
- a += state[0];
|
|
|
- b += state[1];
|
|
|
- c += state[2];
|
|
|
- d += state[3];
|
|
|
- e += state[4];
|
|
|
- f += state[5];
|
|
|
- g += state[6];
|
|
|
- h += state[7];
|
|
|
-
|
|
|
- state[0] = a;
|
|
|
- state[1] = b;
|
|
|
- state[2] = c;
|
|
|
- state[3] = d;
|
|
|
- state[4] = e;
|
|
|
- state[5] = f;
|
|
|
- state[6] = g;
|
|
|
- state[7] = h;
|
|
|
-
|
|
|
- in += 128;
|
|
|
- inlen -= 128;
|
|
|
- }
|
|
|
+ uint8_t tmp[64];
|
|
|
+ sha512_state state;
|
|
|
+ sha384_init(&state);
|
|
|
+ sha512_process(&state,(uint8_t *)data0,(unsigned long)len0);
|
|
|
+ sha512_process(&state,(uint8_t *)data1,(unsigned long)len1);
|
|
|
+ sha512_done(&state,tmp);
|
|
|
+ Utils::copy<48>(digest,tmp);
|
|
|
+}
|
|
|
|
|
|
- store_bigendian(statebytes + 0,state[0]);
|
|
|
- store_bigendian(statebytes + 8,state[1]);
|
|
|
- store_bigendian(statebytes + 16,state[2]);
|
|
|
- store_bigendian(statebytes + 24,state[3]);
|
|
|
- store_bigendian(statebytes + 32,state[4]);
|
|
|
- store_bigendian(statebytes + 40,state[5]);
|
|
|
- store_bigendian(statebytes + 48,state[6]);
|
|
|
- store_bigendian(statebytes + 56,state[7]);
|
|
|
+#endif // !ZT_HAVE_NATIVE_SHA512
|
|
|
|
|
|
- return 0;
|
|
|
+void HMACSHA384(const uint8_t key[ZT_SYMMETRIC_KEY_SIZE],const void *msg,const unsigned int msglen,uint8_t mac[48])
|
|
|
+{
|
|
|
+ uint64_t kInPadded[16]; // input padded key
|
|
|
+ uint64_t outer[22]; // output padded key | H(input padded key | msg)
|
|
|
+
|
|
|
+ const uint64_t k0 = Utils::loadMachineEndian< uint64_t >(key);
|
|
|
+ const uint64_t k1 = Utils::loadMachineEndian< uint64_t >(key + 8);
|
|
|
+ const uint64_t k2 = Utils::loadMachineEndian< uint64_t >(key + 16);
|
|
|
+ const uint64_t k3 = Utils::loadMachineEndian< uint64_t >(key + 24);
|
|
|
+ const uint64_t k4 = Utils::loadMachineEndian< uint64_t >(key + 32);
|
|
|
+ const uint64_t k5 = Utils::loadMachineEndian< uint64_t >(key + 40);
|
|
|
+
|
|
|
+ const uint64_t ipad = 0x3636363636363636ULL;
|
|
|
+ kInPadded[0] = k0 ^ ipad;
|
|
|
+ kInPadded[1] = k1 ^ ipad;
|
|
|
+ kInPadded[2] = k2 ^ ipad;
|
|
|
+ kInPadded[3] = k3 ^ ipad;
|
|
|
+ kInPadded[4] = k4 ^ ipad;
|
|
|
+ kInPadded[5] = k5 ^ ipad;
|
|
|
+ kInPadded[6] = ipad;
|
|
|
+ kInPadded[7] = ipad;
|
|
|
+ kInPadded[8] = ipad;
|
|
|
+ kInPadded[9] = ipad;
|
|
|
+ kInPadded[10] = ipad;
|
|
|
+ kInPadded[11] = ipad;
|
|
|
+ kInPadded[12] = ipad;
|
|
|
+ kInPadded[13] = ipad;
|
|
|
+ kInPadded[14] = ipad;
|
|
|
+ kInPadded[15] = ipad;
|
|
|
+
|
|
|
+ const uint64_t opad = 0x5c5c5c5c5c5c5c5cULL;
|
|
|
+ outer[0] = k0 ^ opad;
|
|
|
+ outer[1] = k1 ^ opad;
|
|
|
+ outer[2] = k2 ^ opad;
|
|
|
+ outer[3] = k3 ^ opad;
|
|
|
+ outer[4] = k4 ^ opad;
|
|
|
+ outer[5] = k5 ^ opad;
|
|
|
+ outer[6] = opad;
|
|
|
+ outer[7] = opad;
|
|
|
+ outer[8] = opad;
|
|
|
+ outer[9] = opad;
|
|
|
+ outer[10] = opad;
|
|
|
+ outer[11] = opad;
|
|
|
+ outer[12] = opad;
|
|
|
+ outer[13] = opad;
|
|
|
+ outer[14] = opad;
|
|
|
+ outer[15] = opad;
|
|
|
+
|
|
|
+ // H(output padded key | H(input padded key | msg))
|
|
|
+ SHA384(reinterpret_cast<uint8_t *>(outer) + 128,kInPadded,128,msg,msglen);
|
|
|
+ SHA384(mac,outer,176);
|
|
|
}
|
|
|
|
|
|
-#define blocks crypto_hashblocks
|
|
|
-
|
|
|
-static const unsigned char iv[64] = {
|
|
|
- 0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08,
|
|
|
- 0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b,
|
|
|
- 0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b,
|
|
|
- 0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1,
|
|
|
- 0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1,
|
|
|
- 0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f,
|
|
|
- 0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b,
|
|
|
- 0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79
|
|
|
-};
|
|
|
-
|
|
|
-void SHA512::hash(void *digest,const void *data,unsigned int len)
|
|
|
+void KBKDFHMACSHA384(const uint8_t key[ZT_SYMMETRIC_KEY_SIZE],const char label,const char context,const uint32_t iter,uint8_t out[ZT_SYMMETRIC_KEY_SIZE])
|
|
|
{
|
|
|
- unsigned char h[64];
|
|
|
- unsigned char padded[256];
|
|
|
- int i;
|
|
|
- uint64_t bytes = len;
|
|
|
-
|
|
|
- const unsigned char *in = (const unsigned char *)data;
|
|
|
- unsigned int inlen = len;
|
|
|
-
|
|
|
- for (i = 0;i < 64;++i) h[i] = iv[i];
|
|
|
-
|
|
|
- blocks(h,in,inlen);
|
|
|
- in += inlen;
|
|
|
- inlen &= 127;
|
|
|
- in -= inlen;
|
|
|
-
|
|
|
- for (i = 0;i < (int)inlen;++i) padded[i] = in[i];
|
|
|
- padded[inlen] = 0x80;
|
|
|
-
|
|
|
- if (inlen < 112) {
|
|
|
- for (i = inlen + 1;i < 119;++i) padded[i] = 0;
|
|
|
- padded[119] = (unsigned char)((bytes >> 61) & 0xff);
|
|
|
- padded[120] = (unsigned char)((bytes >> 53) & 0xff);
|
|
|
- padded[121] = (unsigned char)((bytes >> 45) & 0xff);
|
|
|
- padded[122] = (unsigned char)((bytes >> 37) & 0xff);
|
|
|
- padded[123] = (unsigned char)((bytes >> 29) & 0xff);
|
|
|
- padded[124] = (unsigned char)((bytes >> 21) & 0xff);
|
|
|
- padded[125] = (unsigned char)((bytes >> 13) & 0xff);
|
|
|
- padded[126] = (unsigned char)((bytes >> 5) & 0xff);
|
|
|
- padded[127] = (unsigned char)((bytes << 3) & 0xff);
|
|
|
- blocks(h,padded,128);
|
|
|
- } else {
|
|
|
- for (i = inlen + 1;i < 247;++i) padded[i] = 0;
|
|
|
- padded[247] = (unsigned char)((bytes >> 61) & 0xff);
|
|
|
- padded[248] = (unsigned char)((bytes >> 53) & 0xff);
|
|
|
- padded[249] = (unsigned char)((bytes >> 45) & 0xff);
|
|
|
- padded[250] = (unsigned char)((bytes >> 37) & 0xff);
|
|
|
- padded[251] = (unsigned char)((bytes >> 29) & 0xff);
|
|
|
- padded[252] = (unsigned char)((bytes >> 21) & 0xff);
|
|
|
- padded[253] = (unsigned char)((bytes >> 13) & 0xff);
|
|
|
- padded[254] = (unsigned char)((bytes >> 5) & 0xff);
|
|
|
- padded[255] = (unsigned char)((bytes << 3) & 0xff);
|
|
|
- blocks(h,padded,256);
|
|
|
- }
|
|
|
+ uint8_t kbkdfMsg[13];
|
|
|
|
|
|
- for (i = 0;i < 64;++i) ((unsigned char *)digest)[i] = h[i];
|
|
|
-}
|
|
|
+ Utils::storeBigEndian<uint32_t>(kbkdfMsg,(uint32_t)iter);
|
|
|
|
|
|
-} // namespace ZeroTier
|
|
|
+ kbkdfMsg[4] = (uint8_t)'Z';
|
|
|
+ kbkdfMsg[5] = (uint8_t)'T'; // preface our labels with something ZT-specific
|
|
|
+ kbkdfMsg[6] = (uint8_t)label;
|
|
|
+ kbkdfMsg[7] = 0;
|
|
|
|
|
|
-#endif // !ZT_HAVE_NATIVE_SHA512
|
|
|
+ kbkdfMsg[8] = (uint8_t)context;
|
|
|
|
|
|
-// Internally re-export to included C code, which includes some fast crypto code ported in on some platforms.
|
|
|
-// This eliminates the need to link against a third party SHA512() from this code
|
|
|
-extern "C" void ZT_sha512internal(void *digest,const void *data,unsigned int len)
|
|
|
-{
|
|
|
- ZeroTier::SHA512::hash(digest,data,len);
|
|
|
+ // Output key length: 384 bits (as 32-bit big-endian value)
|
|
|
+ kbkdfMsg[9] = 0;
|
|
|
+ kbkdfMsg[10] = 0;
|
|
|
+ kbkdfMsg[11] = 0x01;
|
|
|
+ kbkdfMsg[12] = 0x80;
|
|
|
+
|
|
|
+ static_assert(ZT_SYMMETRIC_KEY_SIZE == ZT_SHA384_DIGEST_SIZE,"sizeof(out) != ZT_SHA384_DIGEST_SIZE");
|
|
|
+ HMACSHA384(key,&kbkdfMsg,sizeof(kbkdfMsg),out);
|
|
|
}
|
|
|
+
|
|
|
+} // namespace ZeroTier
|
Adam Ierymenko