X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_ssl/lib/sslDigests.c diff --git a/libsecurity_ssl/lib/sslDigests.c b/libsecurity_ssl/lib/sslDigests.c new file mode 100644 index 00000000..5377efdd --- /dev/null +++ b/libsecurity_ssl/lib/sslDigests.c @@ -0,0 +1,411 @@ +/* + * Copyright (c) 2000-2001,2005-2007,2010-2012 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@ + */ + +/* + * sslDigests.c - Interface between SSL and SHA, MD5 digest implementations + */ + +#include "sslContext.h" +#include "cryptType.h" +#include "sslMemory.h" +#include "sslDigests.h" +#include "sslDebug.h" + +#include +#include + +#define DIGEST_PRINT 0 +#if DIGEST_PRINT +#define dgprintf(s) printf s +#else +#define dgprintf(s) +#endif + +const UInt8 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 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 +}; + +/* + * Public general hash functions + */ + +/* + * A convenience wrapper for HashReference.clone, which has the added benefit of + * allocating the state buffer for the caller. + */ +OSStatus +CloneHashState( + const HashReference *ref, + const SSLBuffer *state, + SSLBuffer *newState, + SSLContext *ctx) +{ + OSStatus err; + if ((err = SSLAllocBuffer(newState, ref->contextSize, ctx)) != 0) + return err; + return ref->clone(state, newState); +} + +/* + * Wrapper for HashReference.init. + */ +OSStatus +ReadyHash(const HashReference *ref, SSLBuffer *state, SSLContext *ctx) +{ + OSStatus err; + if ((err = SSLAllocBuffer(state, ref->contextSize, ctx)) != 0) + return err; + return ref->init(state, ctx); +} + +/* + * Wrapper for HashReference.close. Tolerates NULL state and frees it if it's + * there. + */ +OSStatus CloseHash(const HashReference *ref, SSLBuffer *state, SSLContext *ctx) +{ + OSStatus serr; + + if(state->data == NULL) { + return noErr; + } + serr = ref->close(state, ctx); + if(serr) { + return serr; + } + return SSLFreeBuffer(state, ctx); +} + + +/*** NULL ***/ +static OSStatus HashNullInit(SSLBuffer *digestCtx, SSLContext *sslCtx) { + return noErr; +} +static OSStatus HashNullUpdate(SSLBuffer *digestCtx, const SSLBuffer *data) { + return noErr; +} +static OSStatus HashNullFinal(SSLBuffer *digestCtx, SSLBuffer *digest) { + return noErr; +} +static OSStatus HashNullClose(SSLBuffer *digestCtx, SSLContext *sslCtx) { + return noErr; +} +static OSStatus HashNullClone(const SSLBuffer *src, SSLBuffer *dest) { + return noErr; +} + +/*** MD5 ***/ +static OSStatus HashMD5Init(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus HashMD5Close(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + assert(digestCtx->length >= sizeof(CC_MD5_CTX)); + return noErr; +} + +static OSStatus 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 noErr; +} + +/*** SHA1 ***/ +static OSStatus HashSHA1Init(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus HashSHA1Close(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA1_CTX)); + return noErr; +} + +static OSStatus 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 noErr; +} + +/*** SHA256 ***/ +static OSStatus HashSHA256Init(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus HashSHA256Close(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA256_CTX)); + return noErr; +} + +static OSStatus 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 noErr; +} + +/*** SHA384 ***/ +static OSStatus HashSHA384Init(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus 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 noErr; +} + +static OSStatus HashSHA384Close(SSLBuffer *digestCtx, SSLContext *sslCtx) +{ + assert(digestCtx->length >= sizeof(CC_SHA512_CTX)); + return noErr; +} + +static OSStatus 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 noErr; +} + +/* + * 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 = + { + sizeof(CC_MD5_CTX), + CC_MD5_DIGEST_LENGTH, + 48, + HashMD5Init, + HashMD5Update, + HashMD5Final, + HashMD5Close, + HashMD5Clone + }; + +const HashReference SSLHashSHA1 = + { + sizeof(CC_SHA1_CTX), + CC_SHA1_DIGEST_LENGTH, + 40, + HashSHA1Init, + HashSHA1Update, + HashSHA1Final, + HashSHA1Close, + HashSHA1Clone + }; + +const HashReference SSLHashSHA256 = + { + sizeof(CC_SHA256_CTX), + CC_SHA256_DIGEST_LENGTH, + CC_SHA256_BLOCK_BYTES, + HashSHA256Init, + HashSHA256Update, + HashSHA256Final, + HashSHA256Close, + HashSHA256Clone + }; + +const HashReference SSLHashSHA384 = + { + sizeof(CC_SHA512_CTX), + CC_SHA384_DIGEST_LENGTH, + CC_SHA384_BLOCK_BYTES, + HashSHA384Init, + HashSHA384Update, + HashSHA384Final, + HashSHA384Close, + HashSHA384Clone + };