From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/evp/m_md5_sha1.c | 142 +++++++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/evp/m_md5_sha1.c

(limited to 'openssl-1.1.0h/crypto/evp/m_md5_sha1.c')

diff --git a/openssl-1.1.0h/crypto/evp/m_md5_sha1.c b/openssl-1.1.0h/crypto/evp/m_md5_sha1.c
new file mode 100644
index 0000000..2d98886
--- /dev/null
+++ b/openssl-1.1.0h/crypto/evp/m_md5_sha1.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#if !defined(OPENSSL_NO_MD5)
+
+# include <openssl/evp.h>
+# include <openssl/objects.h>
+# include <openssl/x509.h>
+# include <openssl/md5.h>
+# include <openssl/sha.h>
+# include "internal/cryptlib.h"
+# include "internal/evp_int.h"
+# include <openssl/rsa.h>
+
+struct md5_sha1_ctx {
+    MD5_CTX md5;
+    SHA_CTX sha1;
+};
+
+static int init(EVP_MD_CTX *ctx)
+{
+    struct md5_sha1_ctx *mctx = EVP_MD_CTX_md_data(ctx);
+    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 = EVP_MD_CTX_md_data(ctx);
+    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 = EVP_MD_CTX_md_data(ctx);
+    if (!MD5_Final(md, &mctx->md5))
+        return 0;
+    return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1);
+}
+
+static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms)
+{
+    unsigned char padtmp[48];
+    unsigned char md5tmp[MD5_DIGEST_LENGTH];
+    unsigned char sha1tmp[SHA_DIGEST_LENGTH];
+    struct md5_sha1_ctx *mctx;
+
+    if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
+        return -2;
+
+    if (ctx == NULL)
+        return 0;
+
+    mctx = EVP_MD_CTX_md_data(ctx);
+
+    /* SSLv3 client auth handling: see RFC-6101 5.6.8 */
+    if (mslen != 48)
+        return 0;
+
+    /* At this point hash contains all handshake messages, update
+     * with master secret and pad_1.
+     */
+
+    if (update(ctx, ms, mslen) <= 0)
+        return 0;
+
+    /* Set padtmp to pad_1 value */
+    memset(padtmp, 0x36, sizeof(padtmp));
+
+    if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
+        return 0;
+
+    if (!MD5_Final(md5tmp, &mctx->md5))
+        return 0;
+
+    if (!SHA1_Update(&mctx->sha1, padtmp, 40))
+        return 0;
+
+    if (!SHA1_Final(sha1tmp, &mctx->sha1))
+        return 0;
+
+    /* Reinitialise context */
+
+    if (!init(ctx))
+        return 0;
+
+    if (update(ctx, ms, mslen) <= 0)
+        return 0;
+
+    /* Set padtmp to pad_2 value */
+    memset(padtmp, 0x5c, sizeof(padtmp));
+
+    if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
+        return 0;
+
+    if (!MD5_Update(&mctx->md5, md5tmp, sizeof(md5tmp)))
+        return 0;
+
+    if (!SHA1_Update(&mctx->sha1, padtmp, 40))
+        return 0;
+
+    if (!SHA1_Update(&mctx->sha1, sha1tmp, sizeof(sha1tmp)))
+        return 0;
+
+    /* Now when ctx is finalised it will return the SSL v3 hash value */
+
+    OPENSSL_cleanse(md5tmp, sizeof(md5tmp));
+    OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
+
+    return 1;
+
+}
+
+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,
+    MD5_CBLOCK,
+    sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx),
+    ctrl
+};
+
+const EVP_MD *EVP_md5_sha1(void)
+{
+    return &md5_sha1_md;
+}
+#endif
-- 
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