Add MD5+SHA1

Add digest combining MD5 and SHA1. This is used by RSA signatures for
TLS 1.1 and earlier.

Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 114 insertions, 0 deletions

diff --git a/crypto/evp/m_md5_sha1.c b/crypto/evp/m_md5_sha1.c
new file mode 100644
index 0000000000..9e8f183ea0
--- /dev/null
+++ b/crypto/evp/m_md5_sha1.c
@@ -0,0 +1,114 @@
+/* crypto/evp/m_md5_sha1.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2015 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ */
+
+#if !defined(OPENSSL_NO_MD5) && !defined(OPENSSL_NO_SHA1)
+
+# include <openssl/evp.h>
+# include <openssl/objects.h>
+# include <openssl/x509.h>
+# include <openssl/md5.h>
+# include <openssl/sha.h>
+# ifndef OPENSSL_NO_RSA
+#  include <openssl/rsa.h>
+# endif
+
+struct md5_sha1_ctx {
+    MD5_CTX md5;
+    SHA_CTX sha1;
+};
+
+static int init(EVP_MD_CTX *ctx)
+{
+    struct md5_sha1_ctx *mctx = ctx->md_data;
+    if (!MD5_Init(&mctx->md5))
+        return 0;
+    return SHA1_Init(&mctx->sha1);
+}
+
+static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+    struct md5_sha1_ctx *mctx = ctx->md_data;
+    if (!MD5_Update(&mctx->md5, data, count))
+        return 0;
+    return SHA1_Update(&mctx->sha1, data, count);
+}
+
+static int final(EVP_MD_CTX *ctx, unsigned char *md)
+{
+    struct md5_sha1_ctx *mctx = ctx->md_data;
+    if (!MD5_Final(md, &mctx->md5))
+        return 0;
+    return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1);
+}
+
+static const EVP_MD md5_sha1_md = {
+    NID_md5_sha1,
+    NID_md5_sha1,
+    MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
+    0,
+    init,
+    update,
+    final,
+    NULL,
+    NULL,
+    EVP_PKEY_RSA_method,
+    MD5_CBLOCK,
+    sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx),
+};
+
+const EVP_MD *EVP_md5_sha1(void)
+{
+    return &md5_sha1_md;
+}
+#endif