X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/c38e3ce98599a410a47dc10253faa4d5830f13b2..427c49bcad63d042b29ada2ac27e3dfc4845c779:/libsecurity_ssl/lib/tls_digest.c diff --git a/libsecurity_ssl/lib/tls_digest.c b/libsecurity_ssl/lib/tls_digest.c new file mode 100644 index 00000000..5d975425 --- /dev/null +++ b/libsecurity_ssl/lib/tls_digest.c @@ -0,0 +1,545 @@ +/* + * Copyright (c) 2000-2001,2005-2007,2010-2011 Apple Inc. All Rights Reserved. + * + * @APPLE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this + * file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_LICENSE_HEADER_END@ + */ + +/* + * tls_digest.c - Hash implementations + */ + +/* THIS FILE CONTAINS KERNEL CODE */ + +#include "tls_digest.h" +#include "sslTypes.h" + +#include + +#define DIGEST_PRINT 0 +#if DIGEST_PRINT +#define dgprintf(s) printf s +#else +#define dgprintf(s) +#endif + +const uint8_t SSLMACPad1[MAX_MAC_PADDING] = +{ + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, + 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 +}; + +const uint8_t SSLMACPad2[MAX_MAC_PADDING] = +{ + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C, + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C, + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C, + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C, + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C, + 0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C,0x5C +}; + +/*** NULL ***/ +static int HashNullInit(SSLBuffer *digestCtx) { + return 0; +} +static int HashNullUpdate(SSLBuffer *digestCtx, const SSLBuffer *data) { + return 0; +} +static int HashNullFinal(SSLBuffer *digestCtx, SSLBuffer *digest) { + return 0; +} +static int HashNullClose(SSLBuffer *digestCtx) { + return 0; +} +static int HashNullClone(const SSLBuffer *src, SSLBuffer *dest) { + return 0; +} + +#ifdef KERNEL + +// Kernel based implementation +#include +#include +#include +#include +#include + +static int ccHashInit(const struct ccdigest_info *di, SSLBuffer *digestCtx) +{ + ccdigest_ctx_t ctx = (ccdigest_ctx_t)(struct ccdigest_ctx *)digestCtx->data; + check(digestCtx->length >= ccdigest_di_size(di)); + ccdigest_init(di, ctx); + return 0; +} + +static int ccHashUpdate(const struct ccdigest_info *di, SSLBuffer *digestCtx, const SSLBuffer *data) +{ + /* 64 bits cast: safe, SSL records are always smaller than 2^32 bytes */ + ccdigest_ctx_t ctx = (ccdigest_ctx_t)(struct ccdigest_ctx *)digestCtx->data; + check(digestCtx->length >= ccdigest_di_size(di)); + ccdigest_update(di, ctx, data->length, data->data); + return 0; +} + +static int ccHashFinal(const struct ccdigest_info *di, SSLBuffer *digestCtx, SSLBuffer *digest) +{ + ccdigest_ctx_t ctx = (ccdigest_ctx_t)(struct ccdigest_ctx *)digestCtx->data; + check(digestCtx->length >= ccdigest_di_size(di)); + check(digest->length >= di->output_size); + ccdigest_final(di, ctx, digest->data); + digest->length = di->output_size; + return 0; +} + +static int ccHashClose(const struct ccdigest_info *di, SSLBuffer *digestCtx) +{ + check(digestCtx->length >= ccdigest_di_size(di)); + return 0; +} + +static int ccHashClone(const struct ccdigest_info *di, const SSLBuffer *src, SSLBuffer *dst) +{ + check(src->length >= ccdigest_di_size(di)); + check(dst->length >= ccdigest_di_size(di)); + memcpy(dst->data, src->data, ccdigest_di_size(di)); + return 0; + +} + +#define SSL_MD5_DIGEST_LENGTH (CCMD5_OUTPUT_SIZE) +#define SSL_SHA1_DIGEST_LENGTH (CCSHA1_OUTPUT_SIZE) +#define SSL_SHA256_DIGEST_LENGTH (CCSHA256_OUTPUT_SIZE) +#define SSL_SHA384_DIGEST_LENGTH (CCSHA384_OUTPUT_SIZE) + +#define SSL_MD5_CONTEXT_SIZE (ccdigest_ctx_size(CCMD5_STATE_SIZE, CCMD5_BLOCK_SIZE)) +#define SSL_SHA1_CONTEXT_SIZE (ccdigest_ctx_size(CCSHA1_STATE_SIZE, CCSHA1_BLOCK_SIZE)) +#define SSL_SHA256_CONTEXT_SIZE (ccdigest_ctx_size(CCSHA256_STATE_SIZE, CCSHA256_BLOCK_SIZE)) +#define SSL_SHA384_CONTEXT_SIZE (ccdigest_ctx_size(CCSHA512_STATE_SIZE, CCSHA512_BLOCK_SIZE)) + +#define SSL_SHA256_BLOCK_BYTES CCSHA256_BLOCK_SIZE +#define SSL_SHA384_BLOCK_BYTES CCSHA512_BLOCK_SIZE + +/*** MD5 ***/ +static int HashMD5Init(SSLBuffer *digestCtx) +{ + return ccHashInit(ccmd5_di(), digestCtx); +} + +static int HashMD5Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + return ccHashUpdate(ccmd5_di(), digestCtx, data); +} + +static int HashMD5Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + return ccHashFinal(ccmd5_di(), digestCtx, digest); +} + +static int HashMD5Close(SSLBuffer *digestCtx) +{ + return ccHashClose(ccmd5_di(), digestCtx); +} + +static int HashMD5Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + return ccHashClone(ccmd5_di(), src, dst); +} + +/*** SHA1 ***/ +static int HashSHA1Init(SSLBuffer *digestCtx) +{ + return ccHashInit(ccsha1_di(), digestCtx); +} + +static int HashSHA1Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + return ccHashUpdate(ccsha1_di(), digestCtx, data); +} + +static int HashSHA1Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + return ccHashFinal(ccsha1_di(), digestCtx, digest); +} + +static int HashSHA1Close(SSLBuffer *digestCtx) +{ + return ccHashClose(ccsha1_di(), digestCtx);} + +static int HashSHA1Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + return ccHashClone(ccsha1_di(), src, dst); +} + +/*** SHA256 ***/ +static int HashSHA256Init(SSLBuffer *digestCtx) +{ + return ccHashInit(ccsha256_di(), digestCtx); +} + +static int HashSHA256Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + return ccHashUpdate(ccsha256_di(), digestCtx, data); +} + +static int HashSHA256Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + return ccHashFinal(ccsha256_di(), digestCtx, digest); +} + +static int HashSHA256Close(SSLBuffer *digestCtx) +{ + return ccHashClose(ccsha256_di(), digestCtx); +} + +static int HashSHA256Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + return ccHashClone(ccsha256_di(), src, dst); +} + +/*** SHA384 ***/ +static int HashSHA384Init(SSLBuffer *digestCtx) +{ + return ccHashInit(ccsha384_di(), digestCtx); +} + +static int HashSHA384Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + return ccHashUpdate(ccsha384_di(), digestCtx, data); +} + +static int HashSHA384Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + return ccHashFinal(ccsha384_di(), digestCtx, digest); +} + +static int HashSHA384Close(SSLBuffer *digestCtx) +{ + return ccHashClose(ccsha384_di(), digestCtx); +} + +static int HashSHA384Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + return ccHashClone(ccsha384_di(), src, dst); +} + +#else + +// CommonCrypto based implementation +#include +#include + +#define SSL_MD5_DIGEST_LENGTH CC_MD5_DIGEST_LENGTH +#define SSL_SHA1_DIGEST_LENGTH CC_SHA1_DIGEST_LENGTH +#define SSL_SHA256_DIGEST_LENGTH CC_SHA256_DIGEST_LENGTH +#define SSL_SHA384_DIGEST_LENGTH CC_SHA384_DIGEST_LENGTH + +#define SSL_MD5_CONTEXT_SIZE (sizeof(CC_MD5_CTX)) +#define SSL_SHA1_CONTEXT_SIZE (sizeof(CC_SHA1_CTX)) +#define SSL_SHA256_CONTEXT_SIZE (sizeof(CC_SHA256_CTX)) +#define SSL_SHA384_CONTEXT_SIZE (sizeof(CC_SHA512_CTX)) + +#define SSL_SHA256_BLOCK_BYTES CC_SHA256_BLOCK_BYTES +#define SSL_SHA384_BLOCK_BYTES CC_SHA512_BLOCK_BYTES + +/*** MD5 ***/ +static int HashMD5Init(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_MD5_CTX)); + CC_MD5_CTX *ctx = (CC_MD5_CTX *)digestCtx->data; + CC_MD5_Init(ctx); + dgprintf(("###HashMD5Init ctx %p\n", ctx)); + return 0; +} + +static int HashMD5Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + /* 64 bits cast: safe, SSL records are always smaller than 2^32 bytes */ + assert(digestCtx->length >= sizeof(CC_MD5_CTX)); + CC_MD5_CTX *ctx = (CC_MD5_CTX *)digestCtx->data; + CC_MD5_Update(ctx, data->data, (CC_LONG)data->length); + return 0; +} + +static int HashMD5Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + assert(digestCtx->length >= sizeof(CC_MD5_CTX)); + CC_MD5_CTX *ctx = (CC_MD5_CTX *)digestCtx->data; + dgprintf(("###HashMD5Final ctx %p\n", ctx)); + assert(digest->length >= CC_MD5_DIGEST_LENGTH); + //if (digest->length < CC_MD5_DIGEST_LENGTH) + // return errSSLCrypto; + CC_MD5_Final(digest->data, ctx); + digest->length = CC_MD5_DIGEST_LENGTH; + return 0; +} + +static int HashMD5Close(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_MD5_CTX)); + return 0; +} + +static int HashMD5Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + CC_MD5_CTX *srcCtx; + CC_MD5_CTX *dstCtx; + + assert(src->length >= sizeof(CC_MD5_CTX)); + assert(dst->length >= sizeof(CC_MD5_CTX)); + + srcCtx = (CC_MD5_CTX *)src->data; + dstCtx = (CC_MD5_CTX *)dst->data; + dgprintf(("###HashMD5Clone srcCtx %p dstCtx %p\n", srcCtx, dstCtx)); + + memcpy(dstCtx, srcCtx, sizeof(CC_MD5_CTX)); + return 0; +} + +/*** SHA1 ***/ +static int HashSHA1Init(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA1_CTX)); + CC_SHA1_CTX *ctx = (CC_SHA1_CTX *)digestCtx->data; + CC_SHA1_Init(ctx); + dgprintf(("###HashSHA1Init ctx %p\n", ctx)); + return 0; +} + +static int HashSHA1Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + /* 64 bits cast: safe, SSL records are always smaller than 2^32 bytes */ + assert(digestCtx->length >= sizeof(CC_SHA1_CTX)); + CC_SHA1_CTX *ctx = (CC_SHA1_CTX *)digestCtx->data; + CC_SHA1_Update(ctx, data->data, (CC_LONG)data->length); + return 0; +} + +static int HashSHA1Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + assert(digestCtx->length >= sizeof(CC_SHA1_CTX)); + CC_SHA1_CTX *ctx = (CC_SHA1_CTX *)digestCtx->data; + dgprintf(("###HashSHA1Final ctx %p\n", ctx)); + assert(digest->length >= CC_SHA1_DIGEST_LENGTH); + //if (digest->length < CC_SHA1_DIGEST_LENGTH) + // return errSSLCrypto; + CC_SHA1_Final(digest->data, ctx); + digest->length = CC_SHA1_DIGEST_LENGTH; + return 0; +} + +static int HashSHA1Close(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA1_CTX)); + return 0; +} + +static int HashSHA1Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + CC_SHA1_CTX *srcCtx; + CC_SHA1_CTX *dstCtx; + + assert(src->length >= sizeof(CC_SHA1_CTX)); + assert(dst->length >= sizeof(CC_SHA1_CTX)); + + srcCtx = (CC_SHA1_CTX *)src->data; + dstCtx = (CC_SHA1_CTX *)dst->data; + dgprintf(("###HashSHA1Clone srcCtx %p dstCtx %p\n", srcCtx, dstCtx)); + + memcpy(dstCtx, srcCtx, sizeof(CC_SHA1_CTX)); + return 0; +} + +/*** SHA256 ***/ +static int HashSHA256Init(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA256_CTX)); + CC_SHA256_CTX *ctx = (CC_SHA256_CTX *)digestCtx->data; + CC_SHA256_Init(ctx); + dgprintf(("###HashSHA256Init ctx %p\n", ctx)); + return 0; +} + +static int HashSHA256Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + /* 64 bits cast: safe, SSL records are always smaller than 2^32 bytes */ + assert(digestCtx->length >= sizeof(CC_SHA256_CTX)); + CC_SHA256_CTX *ctx = (CC_SHA256_CTX *)digestCtx->data; + CC_SHA256_Update(ctx, data->data, (CC_LONG)data->length); + return 0; +} + +static int HashSHA256Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + assert(digestCtx->length >= sizeof(CC_SHA256_CTX)); + CC_SHA256_CTX *ctx = (CC_SHA256_CTX *)digestCtx->data; + dgprintf(("###HashSHA256Final ctx %p\n", ctx)); + assert(digest->length >= CC_SHA256_DIGEST_LENGTH); + //if (digest->length < CC_SHA256_DIGEST_LENGTH) + // return errSSLCrypto; + CC_SHA256_Final(digest->data, ctx); + digest->length = CC_SHA256_DIGEST_LENGTH; + return 0; +} + +static int HashSHA256Close(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA256_CTX)); + return 0; +} + +static int HashSHA256Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + CC_SHA256_CTX *srcCtx; + CC_SHA256_CTX *dstCtx; + + assert(src->length >= sizeof(CC_SHA256_CTX)); + assert(dst->length >= sizeof(CC_SHA256_CTX)); + + srcCtx = (CC_SHA256_CTX *)src->data; + dstCtx = (CC_SHA256_CTX *)dst->data; + dgprintf(("###HashSHA256Clone srcCtx %p dstCtx %p\n", srcCtx, dstCtx)); + + memcpy(dstCtx, srcCtx, sizeof(CC_SHA256_CTX)); + return 0; +} + +/*** SHA384 ***/ +static int HashSHA384Init(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA512_CTX)); + CC_SHA512_CTX *ctx = (CC_SHA512_CTX *)digestCtx->data; + CC_SHA384_Init(ctx); + dgprintf(("###HashSHA384Init ctx %p\n", ctx)); + return 0; +} + +static int HashSHA384Update(SSLBuffer *digestCtx, const SSLBuffer *data) +{ + /* 64 bits cast: safe, SSL records are always smaller than 2^32 bytes */ + assert(digestCtx->length >= sizeof(CC_SHA512_CTX)); + CC_SHA512_CTX *ctx = (CC_SHA512_CTX *)digestCtx->data; + CC_SHA384_Update(ctx, data->data, (CC_LONG)data->length); + return 0; +} + +static int HashSHA384Final(SSLBuffer *digestCtx, SSLBuffer *digest) +{ + assert(digestCtx->length >= sizeof(CC_SHA512_CTX)); + CC_SHA512_CTX *ctx = (CC_SHA512_CTX *)digestCtx->data; + dgprintf(("###HashSHA384Final ctx %p\n", ctx)); + assert(digest->length >= CC_SHA384_DIGEST_LENGTH); + //if (digest->length < CC_SHA384_DIGEST_LENGTH) + // return errSSLCrypto; + CC_SHA384_Final(digest->data, ctx); + digest->length = CC_SHA384_DIGEST_LENGTH; + return 0; +} + +static int HashSHA384Close(SSLBuffer *digestCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA512_CTX)); + return 0; +} + +static int HashSHA384Clone(const SSLBuffer *src, SSLBuffer *dst) +{ + CC_SHA512_CTX *srcCtx; + CC_SHA512_CTX *dstCtx; + + assert(src->length >= sizeof(CC_SHA512_CTX)); + assert(dst->length >= sizeof(CC_SHA512_CTX)); + + srcCtx = (CC_SHA512_CTX *)src->data; + dstCtx = (CC_SHA512_CTX *)dst->data; + dgprintf(("###HashSHA384Clone srcCtx %p dstCtx %p\n", srcCtx, dstCtx)); + + memcpy(dstCtx, srcCtx, sizeof(CC_SHA512_CTX)); + return 0; +} + +#endif + +/* + * These are the handles by which the bulk of digesting work + * is done. + */ +const HashReference SSLHashNull = +{ + 0, + 0, + 0, + HashNullInit, + HashNullUpdate, + HashNullFinal, + HashNullClose, + HashNullClone +}; + +const HashReference SSLHashMD5 = +{ + SSL_MD5_DIGEST_LENGTH, + 48, + SSL_MD5_CONTEXT_SIZE, + HashMD5Init, + HashMD5Update, + HashMD5Final, + HashMD5Close, + HashMD5Clone +}; + +const HashReference SSLHashSHA1 = +{ + SSL_SHA1_DIGEST_LENGTH, + 40, + SSL_SHA1_CONTEXT_SIZE, + HashSHA1Init, + HashSHA1Update, + HashSHA1Final, + HashSHA1Close, + HashSHA1Clone +}; + +const HashReference SSLHashSHA256 = +{ + SSL_SHA256_DIGEST_LENGTH, + SSL_SHA256_BLOCK_BYTES, + SSL_SHA256_CONTEXT_SIZE, + HashSHA256Init, + HashSHA256Update, + HashSHA256Final, + HashSHA256Close, + HashSHA256Clone +}; + +const HashReference SSLHashSHA384 = +{ + SSL_SHA384_DIGEST_LENGTH, + SSL_SHA384_BLOCK_BYTES, + SSL_SHA384_CONTEXT_SIZE, + HashSHA384Init, + HashSHA384Update, + HashSHA384Final, + HashSHA384Close, + HashSHA384Clone +};