From f312a837e919c660884ceb9c50c106df1e4c0658 Mon Sep 17 00:00:00 2001 From: Pavel Tvrdík Date: Fri, 13 Nov 2015 16:14:36 +0100 Subject: Add SHA-384/512 and HMAC-SHA-384/512 crypto hash --- lib/Modules | 2 + lib/sha512.c | 614 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/sha512.h | 73 +++++++ 3 files changed, 689 insertions(+) create mode 100644 lib/sha512.c create mode 100644 lib/sha512.h (limited to 'lib') diff --git a/lib/Modules b/lib/Modules index b3daf25d..745306d9 100644 --- a/lib/Modules +++ b/lib/Modules @@ -1,5 +1,7 @@ sha256.c sha256.h +sha512.c +sha512.h sha1.c sha1.h birdlib.h diff --git a/lib/sha512.c b/lib/sha512.c new file mode 100644 index 00000000..e46e4c98 --- /dev/null +++ b/lib/sha512.c @@ -0,0 +1,614 @@ +/* + * BIRD Library -- SHA-512 and SHA-384 Hash Functions, + * HMAC-SHA-512 and HMAC-SHA-384 Functions + * + * (c) 2015 CZ.NIC z.s.p.o. + * + * Based on the code from libgcrypt-1.6.0, which is + * (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc. + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#include "lib/sha256.h" +#include "lib/sha512.h" +#include "lib/unaligned.h" + +static uint sha512_transform(void *context, const byte *data, size_t nblks); + +void +sha512_init(struct sha512_context *ctx) +{ + struct sha512_state *hd = &ctx->state; + + hd->h0 = UINT64_C(0x6a09e667f3bcc908); + hd->h1 = UINT64_C(0xbb67ae8584caa73b); + hd->h2 = UINT64_C(0x3c6ef372fe94f82b); + hd->h3 = UINT64_C(0xa54ff53a5f1d36f1); + hd->h4 = UINT64_C(0x510e527fade682d1); + hd->h5 = UINT64_C(0x9b05688c2b3e6c1f); + hd->h6 = UINT64_C(0x1f83d9abfb41bd6b); + hd->h7 = UINT64_C(0x5be0cd19137e2179); + + ctx->bctx.nblocks = 0; + ctx->bctx.nblocks_high = 0; + ctx->bctx.count = 0; + ctx->bctx.blocksize = 128; + ctx->bctx.transform = sha512_transform; +} + +void +sha384_init(struct sha384_context *ctx) +{ + struct sha512_state *hd = &ctx->state; + + hd->h0 = UINT64_C(0xcbbb9d5dc1059ed8); + hd->h1 = UINT64_C(0x629a292a367cd507); + hd->h2 = UINT64_C(0x9159015a3070dd17); + hd->h3 = UINT64_C(0x152fecd8f70e5939); + hd->h4 = UINT64_C(0x67332667ffc00b31); + hd->h5 = UINT64_C(0x8eb44a8768581511); + hd->h6 = UINT64_C(0xdb0c2e0d64f98fa7); + hd->h7 = UINT64_C(0x47b5481dbefa4fa4); + + ctx->bctx.nblocks = 0; + ctx->bctx.nblocks_high = 0; + ctx->bctx.count = 0; + ctx->bctx.blocksize = 128; + ctx->bctx.transform = sha512_transform; +} + +void sha512_update(struct sha512_context *ctx, const byte *in_buf, size_t in_len) +{ + sha256_update(&ctx->bctx, in_buf, in_len); +} + +static inline u64 +ROTR(u64 x, u64 n) +{ + return ((x >> n) | (x << (64 - n))); +} + +static inline u64 +Ch(u64 x, u64 y, u64 z) +{ + return ((x & y) ^ ( ~x & z)); +} + +static inline u64 +Maj(u64 x, u64 y, u64 z) +{ + return ((x & y) ^ (x & z) ^ (y & z)); +} + +static inline u64 +Sum0(u64 x) +{ + return (ROTR (x, 28) ^ ROTR (x, 34) ^ ROTR (x, 39)); +} + +static inline u64 +Sum1 (u64 x) +{ + return (ROTR (x, 14) ^ ROTR (x, 18) ^ ROTR (x, 41)); +} + +static const u64 k[] = +{ + UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), + UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc), + UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), + UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118), + UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), + UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2), + UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), + UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694), + UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), + UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65), + UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), + UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5), + UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), + UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4), + UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), + UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70), + UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), + UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df), + UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), + UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b), + UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), + UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30), + UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), + UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8), + UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), + UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8), + UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), + UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3), + UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), + UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec), + UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), + UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b), + UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), + UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178), + UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), + UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b), + UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), + UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c), + UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), + UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817) +}; + +/* + * Transform the message W which consists of 16 64-bit-words + */ +static uint +sha512_transform_block(struct sha512_state *hd, const byte *data) +{ + u64 a, b, c, d, e, f, g, h; + u64 w[16]; + int t; + + /* get values from the chaining vars */ + a = hd->h0; + b = hd->h1; + c = hd->h2; + d = hd->h3; + e = hd->h4; + f = hd->h5; + g = hd->h6; + h = hd->h7; + + for ( t = 0; t < 16; t++ ) + w[t] = get_u64(data + t * 8); + +#define S0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7)) +#define S1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6)) + + for (t = 0; t < 80 - 16; ) + { + u64 t1, t2; + + /* Performance on a AMD Athlon(tm) Dual Core Processor 4050e + with gcc 4.3.3 using gcry_md_hash_buffer of each 10000 bytes + initialized to 0,1,2,3...255,0,... and 1000 iterations: + + Not unrolled with macros: 440ms + Unrolled with macros: 350ms + Unrolled with inline: 330ms + */ +#if 0 /* Not unrolled. */ + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[t%16]; + w[t%16] += S1 (w[(t - 2)%16]) + w[(t - 7)%16] + S0 (w[(t - 15)%16]); + t2 = Sum0 (a) + Maj(a, b, c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + t++; +#else /* Unrolled to interweave the chain variables. */ + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[0]; + w[0] += S1 (w[14]) + w[9] + S0 (w[1]); + t2 = Sum0 (a) + Maj(a, b, c); + d += t1; + h = t1 + t2; + + t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+1] + w[1]; + w[1] += S1 (w[15]) + w[10] + S0 (w[2]); + t2 = Sum0 (h) + Maj(h, a, b); + c += t1; + g = t1 + t2; + + t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+2] + w[2]; + w[2] += S1 (w[0]) + w[11] + S0 (w[3]); + t2 = Sum0 (g) + Maj(g, h, a); + b += t1; + f = t1 + t2; + + t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+3] + w[3]; + w[3] += S1 (w[1]) + w[12] + S0 (w[4]); + t2 = Sum0 (f) + Maj(f, g, h); + a += t1; + e = t1 + t2; + + t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+4] + w[4]; + w[4] += S1 (w[2]) + w[13] + S0 (w[5]); + t2 = Sum0 (e) + Maj(e, f, g); + h += t1; + d = t1 + t2; + + t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+5] + w[5]; + w[5] += S1 (w[3]) + w[14] + S0 (w[6]); + t2 = Sum0 (d) + Maj(d, e, f); + g += t1; + c = t1 + t2; + + t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+6] + w[6]; + w[6] += S1 (w[4]) + w[15] + S0 (w[7]); + t2 = Sum0 (c) + Maj(c, d, e); + f += t1; + b = t1 + t2; + + t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+7] + w[7]; + w[7] += S1 (w[5]) + w[0] + S0 (w[8]); + t2 = Sum0 (b) + Maj(b, c, d); + e += t1; + a = t1 + t2; + + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t+8] + w[8]; + w[8] += S1 (w[6]) + w[1] + S0 (w[9]); + t2 = Sum0 (a) + Maj(a, b, c); + d += t1; + h = t1 + t2; + + t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+9] + w[9]; + w[9] += S1 (w[7]) + w[2] + S0 (w[10]); + t2 = Sum0 (h) + Maj(h, a, b); + c += t1; + g = t1 + t2; + + t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+10] + w[10]; + w[10] += S1 (w[8]) + w[3] + S0 (w[11]); + t2 = Sum0 (g) + Maj(g, h, a); + b += t1; + f = t1 + t2; + + t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+11] + w[11]; + w[11] += S1 (w[9]) + w[4] + S0 (w[12]); + t2 = Sum0 (f) + Maj(f, g, h); + a += t1; + e = t1 + t2; + + t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+12] + w[12]; + w[12] += S1 (w[10]) + w[5] + S0 (w[13]); + t2 = Sum0 (e) + Maj(e, f, g); + h += t1; + d = t1 + t2; + + t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+13] + w[13]; + w[13] += S1 (w[11]) + w[6] + S0 (w[14]); + t2 = Sum0 (d) + Maj(d, e, f); + g += t1; + c = t1 + t2; + + t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+14] + w[14]; + w[14] += S1 (w[12]) + w[7] + S0 (w[15]); + t2 = Sum0 (c) + Maj(c, d, e); + f += t1; + b = t1 + t2; + + t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+15] + w[15]; + w[15] += S1 (w[13]) + w[8] + S0 (w[0]); + t2 = Sum0 (b) + Maj(b, c, d); + e += t1; + a = t1 + t2; + + t += 16; +#endif + } + + for (; t < 80; ) + { + u64 t1, t2; + +#if 0 /* Not unrolled. */ + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[t%16]; + t2 = Sum0 (a) + Maj(a, b, c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + t++; +#else /* Unrolled to interweave the chain variables. */ + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[0]; + t2 = Sum0 (a) + Maj(a, b, c); + d += t1; + h = t1 + t2; + + t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+1] + w[1]; + t2 = Sum0 (h) + Maj(h, a, b); + c += t1; + g = t1 + t2; + + t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+2] + w[2]; + t2 = Sum0 (g) + Maj(g, h, a); + b += t1; + f = t1 + t2; + + t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+3] + w[3]; + t2 = Sum0 (f) + Maj(f, g, h); + a += t1; + e = t1 + t2; + + t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+4] + w[4]; + t2 = Sum0 (e) + Maj(e, f, g); + h += t1; + d = t1 + t2; + + t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+5] + w[5]; + t2 = Sum0 (d) + Maj(d, e, f); + g += t1; + c = t1 + t2; + + t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+6] + w[6]; + t2 = Sum0 (c) + Maj(c, d, e); + f += t1; + b = t1 + t2; + + t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+7] + w[7]; + t2 = Sum0 (b) + Maj(b, c, d); + e += t1; + a = t1 + t2; + + t1 = h + Sum1 (e) + Ch(e, f, g) + k[t+8] + w[8]; + t2 = Sum0 (a) + Maj(a, b, c); + d += t1; + h = t1 + t2; + + t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+9] + w[9]; + t2 = Sum0 (h) + Maj(h, a, b); + c += t1; + g = t1 + t2; + + t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+10] + w[10]; + t2 = Sum0 (g) + Maj(g, h, a); + b += t1; + f = t1 + t2; + + t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+11] + w[11]; + t2 = Sum0 (f) + Maj(f, g, h); + a += t1; + e = t1 + t2; + + t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+12] + w[12]; + t2 = Sum0 (e) + Maj(e, f, g); + h += t1; + d = t1 + t2; + + t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+13] + w[13]; + t2 = Sum0 (d) + Maj(d, e, f); + g += t1; + c = t1 + t2; + + t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+14] + w[14]; + t2 = Sum0 (c) + Maj(c, d, e); + f += t1; + b = t1 + t2; + + t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+15] + w[15]; + t2 = Sum0 (b) + Maj(b, c, d); + e += t1; + a = t1 + t2; + + t += 16; +#endif + } + + /* Update chaining vars. */ + hd->h0 += a; + hd->h1 += b; + hd->h2 += c; + hd->h3 += d; + hd->h4 += e; + hd->h5 += f; + hd->h6 += g; + hd->h7 += h; + + return /* burn_stack */ (8 + 16) * sizeof(u64) + sizeof(u32) + 3 * sizeof(void*); +} + +static uint +sha512_transform(void *context, const byte *data, size_t nblks) +{ + struct sha512_context *ctx = context; + uint burn; + + do + { + burn = sha512_transform_block(&ctx->state, data) + 3 * sizeof(void*); + data += 128; + } + while(--nblks); + + return burn; +} + +/* The routine final terminates the computation and + * returns the digest. + * The handle is prepared for a new cycle, but adding bytes to the + * handle will the destroy the returned buffer. + * Returns: 64 bytes representing the digest. When used for sha384, + * we take the leftmost 48 of those bytes. + */ +byte * +sha512_final(struct sha512_context *ctx) +{ + u64 t, th, msb, lsb; + byte *p; + + sha256_update(&ctx->bctx, NULL, 0); /* flush */ ; + + t = ctx->bctx.nblocks; + /* if (sizeof t == sizeof ctx->bctx.nblocks) */ + th = ctx->bctx.nblocks_high; + /* else */ + /* th = ctx->bctx.nblocks >> 64; In case we ever use u128 */ + + /* multiply by 128 to make a byte count */ + lsb = t << 7; + msb = (th << 7) | (t >> 57); + /* add the count */ + t = lsb; + if ((lsb += ctx->bctx.count) < t) + msb++; + /* multiply by 8 to make a bit count */ + t = lsb; + lsb <<= 3; + msb <<= 3; + msb |= t >> 61; + + if (ctx->bctx.count < 112) + { /* enough room */ + ctx->bctx.buf[ctx->bctx.count++] = 0x80; /* pad */ + while(ctx->bctx.count < 112) + ctx->bctx.buf[ctx->bctx.count++] = 0; /* pad */ + } + else + { /* need one extra block */ + ctx->bctx.buf[ctx->bctx.count++] = 0x80; /* pad character */ + while(ctx->bctx.count < 128) + ctx->bctx.buf[ctx->bctx.count++] = 0; + sha256_update(&ctx->bctx, NULL, 0); /* flush */ ; + memset(ctx->bctx.buf, 0, 112); /* fill next block with zeroes */ + } + /* append the 128 bit count */ + put_u64(ctx->bctx.buf + 112, msb); + put_u64(ctx->bctx.buf + 120, lsb); + sha512_transform(ctx, ctx->bctx.buf, 1); + + p = ctx->bctx.buf; +#define X(a) do { put_u64(p, ctx->state.h##a); p += 8; } while(0) + X (0); + X (1); + X (2); + X (3); + X (4); + X (5); + /* Note that these last two chunks are included even for SHA384. + We just ignore them. */ + X (6); + X (7); +#undef X + + return ctx->bctx.buf; +} + + +/* + * SHA512-HMAC + */ + +static void +sha512_hash_buffer(byte *outbuf, const byte *buffer, size_t length) +{ + struct sha512_context hd_tmp; + + sha512_init(&hd_tmp); + sha512_update(&hd_tmp, buffer, length); + memcpy(outbuf, sha512_final(&hd_tmp), SHA512_SIZE); +} + +void +sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen) +{ + byte keybuf[SHA512_BLOCK_SIZE], buf[SHA512_BLOCK_SIZE]; + + /* Hash the key if necessary */ + if (keylen <= SHA512_BLOCK_SIZE) + { + memcpy(keybuf, key, keylen); + bzero(keybuf + keylen, SHA512_BLOCK_SIZE - keylen); + } + else + { + sha512_hash_buffer(keybuf, key, keylen); + bzero(keybuf + SHA512_SIZE, SHA512_BLOCK_SIZE - SHA512_SIZE); + } + + /* Initialize the inner digest */ + sha512_init(&ctx->ictx); + int i; + for (i = 0; i < SHA512_BLOCK_SIZE; i++) + buf[i] = keybuf[i] ^ 0x36; + sha512_update(&ctx->ictx, buf, SHA512_BLOCK_SIZE); + + /* Initialize the outer digest */ + sha512_init(&ctx->octx); + for (i = 0; i < SHA512_BLOCK_SIZE; i++) + buf[i] = keybuf[i] ^ 0x5c; + sha512_update(&ctx->octx, buf, SHA512_BLOCK_SIZE); +} + +void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen) +{ + /* Just update the inner digest */ + sha512_update(&ctx->ictx, buf, buflen); +} + +byte *sha512_hmac_final(struct sha512_hmac_context *ctx) +{ + /* Finish the inner digest */ + byte *isha = sha512_final(&ctx->ictx); + + /* Finish the outer digest */ + sha512_update(&ctx->octx, isha, SHA512_SIZE); + return sha512_final(&ctx->octx); +} + + +/* + * SHA384-HMAC + */ + +static void +sha384_hash_buffer(byte *outbuf, const byte *buffer, size_t length) +{ + struct sha384_context hd_tmp; + + sha384_init(&hd_tmp); + sha384_update(&hd_tmp, buffer, length); + memcpy(outbuf, sha384_final(&hd_tmp), SHA384_SIZE); +} + +void +sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen) +{ + byte keybuf[SHA384_BLOCK_SIZE], buf[SHA384_BLOCK_SIZE]; + + /* Hash the key if necessary */ + if (keylen <= SHA384_BLOCK_SIZE) + { + memcpy(keybuf, key, keylen); + bzero(keybuf + keylen, SHA384_BLOCK_SIZE - keylen); + } + else + { + sha384_hash_buffer(keybuf, key, keylen); + bzero(keybuf + SHA384_SIZE, SHA384_BLOCK_SIZE - SHA384_SIZE); + } + + /* Initialize the inner digest */ + sha384_init(&ctx->ictx); + int i; + for (i = 0; i < SHA384_BLOCK_SIZE; i++) + buf[i] = keybuf[i] ^ 0x36; + sha384_update(&ctx->ictx, buf, SHA384_BLOCK_SIZE); + + /* Initialize the outer digest */ + sha384_init(&ctx->octx); + for (i = 0; i < SHA384_BLOCK_SIZE; i++) + buf[i] = keybuf[i] ^ 0x5c; + sha384_update(&ctx->octx, buf, SHA384_BLOCK_SIZE); +} + +void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen) +{ + /* Just update the inner digest */ + sha384_update(&ctx->ictx, buf, buflen); +} + +byte *sha384_hmac_final(struct sha384_hmac_context *ctx) +{ + /* Finish the inner digest */ + byte *isha = sha384_final(&ctx->ictx); + + /* Finish the outer digest */ + sha384_update(&ctx->octx, isha, SHA384_SIZE); + return sha384_final(&ctx->octx); +} diff --git a/lib/sha512.h b/lib/sha512.h new file mode 100644 index 00000000..bd998152 --- /dev/null +++ b/lib/sha512.h @@ -0,0 +1,73 @@ +/* + * BIRD Library -- SHA-512 and SHA-384 Hash Functions, + * HMAC-SHA-512 and HMAC-SHA-384 Functions + * + * (c) 2015 CZ.NIC z.s.p.o. + * + * Based on the code from libgcrypt-1.6.0, which is + * (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc. + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_SHA512_H_ +#define _BIRD_SHA512_H_ + +#include "lib/sha256.h" + +#define SHA384_SIZE 48 +#define SHA384_HEX_SIZE 97 +#define SHA384_BLOCK_SIZE 128 + +#define SHA512_SIZE 64 +#define SHA512_HEX_SIZE 129 +#define SHA512_BLOCK_SIZE 128 + +struct sha512_state +{ + u64 h0, h1, h2, h3, h4, h5, h6, h7; +}; + +struct sha512_context +{ + struct sha256_context bctx; + struct sha512_state state; +}; +#define sha384_context sha512_context /* aliasing 'struct sha384_context' to 'struct sha512_context' */ + + +void sha512_init(struct sha512_context *ctx); +void sha384_init(struct sha384_context *ctx); + +void sha512_update(struct sha512_context *ctx, const byte *in_buf, size_t in_len); +static inline void sha384_update(struct sha384_context *ctx, const byte *in_buf, size_t in_len) +{ + sha512_update(ctx, in_buf, in_len); +} + +byte* sha512_final(struct sha512_context *ctx); +static inline byte* sha384_final(struct sha384_context *ctx) +{ + return sha512_final(ctx); +} + +/* + * HMAC-SHA512, HMAC-SHA384 + */ +struct sha512_hmac_context +{ + struct sha512_context ictx; + struct sha512_context octx; +} ; +#define sha384_hmac_context sha512_hmac_context /* aliasing 'struct sha384_hmac_context' to 'struct sha384_hmac_context' */ + +void sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen); +void sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen); + +void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen); +void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen); + +byte *sha512_hmac_final(struct sha512_hmac_context *ctx); +byte *sha384_hmac_final(struct sha384_hmac_context *ctx); + +#endif /* _BIRD_SHA512_H_ */ -- cgit v1.2.3