Module: wine Branch: master Commit: f34bd5b174b01c23dd556beb462aa25a3d1fb93e URL: http://source.winehq.org/git/wine.git/?a=commit;h=f34bd5b174b01c23dd556beb46...
Author: Michael Müller michael@fds-team.de Date: Tue Mar 7 23:15:08 2017 +0100
bcrypt: Add a builtin sha256 implementation.
Signed-off-by: Michael Müller michael@fds-team.de Signed-off-by: Sebastian Lackner sebastian@fds-team.de Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/bcrypt/Makefile.in | 3 +- dlls/bcrypt/bcrypt_internal.h | 11 +++ dlls/bcrypt/bcrypt_main.c | 13 ++++ dlls/bcrypt/sha256.c | 169 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 195 insertions(+), 1 deletion(-)
diff --git a/dlls/bcrypt/Makefile.in b/dlls/bcrypt/Makefile.in index ef9d7ea..c2322c8 100644 --- a/dlls/bcrypt/Makefile.in +++ b/dlls/bcrypt/Makefile.in @@ -4,6 +4,7 @@ IMPORTLIB = bcrypt EXTRAINCL = $(GNUTLS_CFLAGS)
C_SRCS = \ - bcrypt_main.c + bcrypt_main.c \ + sha256.c
RC_SRCS = version.rc diff --git a/dlls/bcrypt/bcrypt_internal.h b/dlls/bcrypt/bcrypt_internal.h index de6a37e..ef137e9 100644 --- a/dlls/bcrypt/bcrypt_internal.h +++ b/dlls/bcrypt/bcrypt_internal.h @@ -25,6 +25,17 @@ #include "windef.h" #include "winbase.h"
+typedef struct +{ + ULONG64 len; + DWORD h[8]; + UCHAR buf[64]; +} SHA256_CTX; + +void sha256_init(SHA256_CTX *ctx) DECLSPEC_HIDDEN; +void sha256_update(SHA256_CTX *ctx, const UCHAR *buffer, ULONG len) DECLSPEC_HIDDEN; +void sha256_finalize(SHA256_CTX *ctx, UCHAR *buffer) DECLSPEC_HIDDEN; + /* Definitions from advapi32 */ typedef struct { diff --git a/dlls/bcrypt/bcrypt_main.c b/dlls/bcrypt/bcrypt_main.c index cef2b1b..301f454 100644 --- a/dlls/bcrypt/bcrypt_main.c +++ b/dlls/bcrypt/bcrypt_main.c @@ -448,6 +448,7 @@ struct hash_impl { MD5_CTX md5; SHA_CTX sha1; + SHA256_CTX sha256; } u; };
@@ -463,6 +464,10 @@ static NTSTATUS hash_init( struct hash_impl *hash, enum alg_id alg_id ) A_SHAInit( &hash->u.sha1 ); break;
+ case ALG_ID_SHA256: + sha256_init( &hash->u.sha256 ); + break; + default: ERR( "unhandled id %u\n", alg_id ); return STATUS_NOT_IMPLEMENTED; @@ -483,6 +488,10 @@ static NTSTATUS hash_update( struct hash_impl *hash, enum alg_id alg_id, A_SHAUpdate( &hash->u.sha1, input, size ); break;
+ case ALG_ID_SHA256: + sha256_update( &hash->u.sha256, input, size ); + break; + default: ERR( "unhandled id %u\n", alg_id ); return STATUS_NOT_IMPLEMENTED; @@ -504,6 +513,10 @@ static NTSTATUS hash_finish( struct hash_impl *hash, enum alg_id alg_id, A_SHAFinal( &hash->u.sha1, (ULONG *)output ); break;
+ case ALG_ID_SHA256: + sha256_finalize( &hash->u.sha256, output ); + break; + default: ERR( "unhandled id %u\n", alg_id ); return STATUS_NOT_IMPLEMENTED; diff --git a/dlls/bcrypt/sha256.c b/dlls/bcrypt/sha256.c new file mode 100644 index 0000000..48c4a48 --- /dev/null +++ b/dlls/bcrypt/sha256.c @@ -0,0 +1,169 @@ +/* + * Copyright 2016 Michael Müller + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + * + */ + +/* Based on public domain implementation from + https://git.musl-libc.org/cgit/musl/tree/src/crypt/crypt_sha256.c */ + +#include "bcrypt_internal.h" + +static DWORD ror(DWORD n, int k) { return (n >> k) | (n << (32-k)); } +#define Ch(x,y,z) (z ^ (x & (y ^ z))) +#define Maj(x,y,z) ((x & y) | (z & (x | y))) +#define S0(x) (ror(x,2) ^ ror(x,13) ^ ror(x,22)) +#define S1(x) (ror(x,6) ^ ror(x,11) ^ ror(x,25)) +#define R0(x) (ror(x,7) ^ ror(x,18) ^ (x>>3)) +#define R1(x) (ror(x,17) ^ ror(x,19) ^ (x>>10)) + +static const DWORD K[64] = +{ + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, + 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, + 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, + 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, + 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 +}; + +static void processblock(SHA256_CTX *ctx, const UCHAR *buffer) +{ + DWORD W[64], t1, t2, a, b, c, d, e, f, g, h; + int i; + + for (i = 0; i < 16; i++) + { + W[i] = (DWORD)buffer[4*i]<<24; + W[i] |= (DWORD)buffer[4*i+1]<<16; + W[i] |= (DWORD)buffer[4*i+2]<<8; + W[i] |= buffer[4*i+3]; + } + + for (; i < 64; i++) + W[i] = R1(W[i-2]) + W[i-7] + R0(W[i-15]) + W[i-16]; + + a = ctx->h[0]; + b = ctx->h[1]; + c = ctx->h[2]; + d = ctx->h[3]; + e = ctx->h[4]; + f = ctx->h[5]; + g = ctx->h[6]; + h = ctx->h[7]; + + for (i = 0; i < 64; i++) + { + t1 = h + S1(e) + Ch(e,f,g) + K[i] + W[i]; + t2 = S0(a) + Maj(a,b,c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + } + + ctx->h[0] += a; + ctx->h[1] += b; + ctx->h[2] += c; + ctx->h[3] += d; + ctx->h[4] += e; + ctx->h[5] += f; + ctx->h[6] += g; + ctx->h[7] += h; +} + +static void pad(SHA256_CTX *ctx) +{ + ULONG64 r = ctx->len % 64; + + ctx->buf[r++] = 0x80; + + if (r > 56) + { + memset(ctx->buf + r, 0, 64 - r); + r = 0; + processblock(ctx, ctx->buf); + } + + memset(ctx->buf + r, 0, 56 - r); + ctx->len *= 8; + ctx->buf[56] = ctx->len >> 56; + ctx->buf[57] = ctx->len >> 48; + ctx->buf[58] = ctx->len >> 40; + ctx->buf[59] = ctx->len >> 32; + ctx->buf[60] = ctx->len >> 24; + ctx->buf[61] = ctx->len >> 16; + ctx->buf[62] = ctx->len >> 8; + ctx->buf[63] = ctx->len; + + processblock(ctx, ctx->buf); +} + +void sha256_init(SHA256_CTX *ctx) +{ + ctx->len = 0; + ctx->h[0] = 0x6a09e667; + ctx->h[1] = 0xbb67ae85; + ctx->h[2] = 0x3c6ef372; + ctx->h[3] = 0xa54ff53a; + ctx->h[4] = 0x510e527f; + ctx->h[5] = 0x9b05688c; + ctx->h[6] = 0x1f83d9ab; + ctx->h[7] = 0x5be0cd19; +} + +void sha256_update(SHA256_CTX *ctx, const UCHAR *buffer, ULONG len) +{ + const UCHAR *p = buffer; + ULONG64 r = ctx->len % 64; + + ctx->len += len; + if (r) + { + if (len < 64 - r) + { + memcpy(ctx->buf + r, p, len); + return; + } + memcpy(ctx->buf + r, p, 64 - r); + len -= 64 - r; + p += 64 - r; + processblock(ctx, ctx->buf); + } + for (; len >= 64; len -= 64, p += 64) + processblock(ctx, p); + memcpy(ctx->buf, p, len); +} + +void sha256_finalize(SHA256_CTX *ctx, UCHAR *buffer) +{ + int i; + + pad(ctx); + for (i = 0; i < 8; i++) + { + buffer[4*i] = ctx->h[i] >> 24; + buffer[4*i+1] = ctx->h[i] >> 16; + buffer[4*i+2] = ctx->h[i] >> 8; + buffer[4*i+3] = ctx->h[i]; + } +}