+/*
+ * 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 <string.h>
+
+#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 <corecrypto/ccdigest.h>
+#include <corecrypto/ccmd5.h>
+#include <corecrypto/ccsha1.h>
+#include <corecrypto/ccsha2.h>
+#include <AssertMacros.h>
+
+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 <CommonCrypto/CommonDigest.h>
+#include <assert.h>
+
+#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
+};
projects / apple / security.git / blobdiff