inital commit

1 files changed, 978 insertions, 0 deletions

diff --git a/openssl/ssl/s3_enc.c b/openssl/ssl/s3_enc.c
new file mode 100644
index 0000000..fbc954d
--- /dev/null
+++ b/openssl/ssl/s3_enc.c
@@ -0,0 +1,978 @@
+/* ssl/s3_enc.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 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
+ *    openssl-core@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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <stdio.h>
+#include "ssl_locl.h"
+#include <openssl/evp.h>
+#include <openssl/md5.h>
+
+static unsigned char ssl3_pad_1[48] = {
+    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
+};
+
+static unsigned char ssl3_pad_2[48] = {
+    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
+};
+
+static int ssl3_handshake_mac(SSL *s, int md_nid,
+                              const char *sender, int len, unsigned char *p);
+static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
+{
+    EVP_MD_CTX m5;
+    EVP_MD_CTX s1;
+    unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
+    unsigned char c = 'A';
+    unsigned int i, j, k;
+
+#ifdef CHARSET_EBCDIC
+    c = os_toascii[c];          /* 'A' in ASCII */
+#endif
+    k = 0;
+    EVP_MD_CTX_init(&m5);
+    EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+    EVP_MD_CTX_init(&s1);
+    for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
+        k++;
+        if (k > sizeof buf) {
+            /* bug: 'buf' is too small for this ciphersuite */
+            SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
+            return 0;
+        }
+
+        for (j = 0; j < k; j++)
+            buf[j] = c;
+        c++;
+        EVP_DigestInit_ex(&s1, EVP_sha1(), NULL);
+        EVP_DigestUpdate(&s1, buf, k);
+        EVP_DigestUpdate(&s1, s->session->master_key,
+                         s->session->master_key_length);
+        EVP_DigestUpdate(&s1, s->s3->server_random, SSL3_RANDOM_SIZE);
+        EVP_DigestUpdate(&s1, s->s3->client_random, SSL3_RANDOM_SIZE);
+        EVP_DigestFinal_ex(&s1, smd, NULL);
+
+        EVP_DigestInit_ex(&m5, EVP_md5(), NULL);
+        EVP_DigestUpdate(&m5, s->session->master_key,
+                         s->session->master_key_length);
+        EVP_DigestUpdate(&m5, smd, SHA_DIGEST_LENGTH);
+        if ((int)(i + MD5_DIGEST_LENGTH) > num) {
+            EVP_DigestFinal_ex(&m5, smd, NULL);
+            memcpy(km, smd, (num - i));
+        } else
+            EVP_DigestFinal_ex(&m5, km, NULL);
+
+        km += MD5_DIGEST_LENGTH;
+    }
+    OPENSSL_cleanse(smd, SHA_DIGEST_LENGTH);
+    EVP_MD_CTX_cleanup(&m5);
+    EVP_MD_CTX_cleanup(&s1);
+    return 1;
+}
+
+int ssl3_change_cipher_state(SSL *s, int which)
+{
+    unsigned char *p, *mac_secret;
+    unsigned char exp_key[EVP_MAX_KEY_LENGTH];
+    unsigned char exp_iv[EVP_MAX_IV_LENGTH];
+    unsigned char *ms, *key, *iv, *er1, *er2;
+    EVP_CIPHER_CTX *dd;
+    const EVP_CIPHER *c;
+#ifndef OPENSSL_NO_COMP
+    COMP_METHOD *comp;
+#endif
+    const EVP_MD *m;
+    EVP_MD_CTX md;
+    int is_exp, n, i, j, k, cl;
+    int reuse_dd = 0;
+
+    is_exp = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
+    c = s->s3->tmp.new_sym_enc;
+    m = s->s3->tmp.new_hash;
+    /* m == NULL will lead to a crash later */
+    OPENSSL_assert(m);
+#ifndef OPENSSL_NO_COMP
+    if (s->s3->tmp.new_compression == NULL)
+        comp = NULL;
+    else
+        comp = s->s3->tmp.new_compression->method;
+#endif
+
+    if (which & SSL3_CC_READ) {
+        if (s->enc_read_ctx != NULL)
+            reuse_dd = 1;
+        else if ((s->enc_read_ctx =
+                  OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
+            goto err;
+        else
+            /*
+             * make sure it's intialized in case we exit later with an error
+             */
+            EVP_CIPHER_CTX_init(s->enc_read_ctx);
+        dd = s->enc_read_ctx;
+
+        if (ssl_replace_hash(&s->read_hash, m) == NULL) {
+                SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+                goto err2;
+        }
+#ifndef OPENSSL_NO_COMP
+        /* COMPRESS */
+        if (s->expand != NULL) {
+            COMP_CTX_free(s->expand);
+            s->expand = NULL;
+        }
+        if (comp != NULL) {
+            s->expand = COMP_CTX_new(comp);
+            if (s->expand == NULL) {
+                SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
+                       SSL_R_COMPRESSION_LIBRARY_ERROR);
+                goto err2;
+            }
+            if (s->s3->rrec.comp == NULL)
+                s->s3->rrec.comp = (unsigned char *)
+                    OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
+            if (s->s3->rrec.comp == NULL)
+                goto err;
+        }
+#endif
+        memset(&(s->s3->read_sequence[0]), 0, 8);
+        mac_secret = &(s->s3->read_mac_secret[0]);
+    } else {
+        if (s->enc_write_ctx != NULL)
+            reuse_dd = 1;
+        else if ((s->enc_write_ctx =
+                  OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
+            goto err;
+        else
+            /*
+             * make sure it's intialized in case we exit later with an error
+             */
+            EVP_CIPHER_CTX_init(s->enc_write_ctx);
+        dd = s->enc_write_ctx;
+        if (ssl_replace_hash(&s->write_hash, m) == NULL) {
+                SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+                goto err2;
+        }
+#ifndef OPENSSL_NO_COMP
+        /* COMPRESS */
+        if (s->compress != NULL) {
+            COMP_CTX_free(s->compress);
+            s->compress = NULL;
+        }
+        if (comp != NULL) {
+            s->compress = COMP_CTX_new(comp);
+            if (s->compress == NULL) {
+                SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
+                       SSL_R_COMPRESSION_LIBRARY_ERROR);
+                goto err2;
+            }
+        }
+#endif
+        memset(&(s->s3->write_sequence[0]), 0, 8);
+        mac_secret = &(s->s3->write_mac_secret[0]);
+    }
+
+    if (reuse_dd)
+        EVP_CIPHER_CTX_cleanup(dd);
+
+    p = s->s3->tmp.key_block;
+    i = EVP_MD_size(m);
+    if (i < 0)
+        goto err2;
+    cl = EVP_CIPHER_key_length(c);
+    j = is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
+                  cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
+    /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
+    k = EVP_CIPHER_iv_length(c);
+    if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
+        (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
+        ms = &(p[0]);
+        n = i + i;
+        key = &(p[n]);
+        n += j + j;
+        iv = &(p[n]);
+        n += k + k;
+        er1 = &(s->s3->client_random[0]);
+        er2 = &(s->s3->server_random[0]);
+    } else {
+        n = i;
+        ms = &(p[n]);
+        n += i + j;
+        key = &(p[n]);
+        n += j + k;
+        iv = &(p[n]);
+        n += k;
+        er1 = &(s->s3->server_random[0]);
+        er2 = &(s->s3->client_random[0]);
+    }
+
+    if (n > s->s3->tmp.key_block_length) {
+        SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+        goto err2;
+    }
+
+    EVP_MD_CTX_init(&md);
+    memcpy(mac_secret, ms, i);
+    if (is_exp) {
+        /*
+         * In here I set both the read and write key/iv to the same value
+         * since only the correct one will be used :-).
+         */
+        EVP_DigestInit_ex(&md, EVP_md5(), NULL);
+        EVP_DigestUpdate(&md, key, j);
+        EVP_DigestUpdate(&md, er1, SSL3_RANDOM_SIZE);
+        EVP_DigestUpdate(&md, er2, SSL3_RANDOM_SIZE);
+        EVP_DigestFinal_ex(&md, &(exp_key[0]), NULL);
+        key = &(exp_key[0]);
+
+        if (k > 0) {
+            EVP_DigestInit_ex(&md, EVP_md5(), NULL);
+            EVP_DigestUpdate(&md, er1, SSL3_RANDOM_SIZE);
+            EVP_DigestUpdate(&md, er2, SSL3_RANDOM_SIZE);
+            EVP_DigestFinal_ex(&md, &(exp_iv[0]), NULL);
+            iv = &(exp_iv[0]);
+        }
+    }
+
+    s->session->key_arg_length = 0;
+
+    EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE));
+
+#ifdef OPENSSL_SSL_TRACE_CRYPTO
+    if (s->msg_callback) {
+
+        int wh = which & SSL3_CC_WRITE ?
+            TLS1_RT_CRYPTO_WRITE : TLS1_RT_CRYPTO_READ;
+        s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
+                        mac_secret, EVP_MD_size(m), s, s->msg_callback_arg);
+        if (c->key_len)
+            s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
+                            key, c->key_len, s, s->msg_callback_arg);
+        if (k) {
+            s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_IV,
+                            iv, k, s, s->msg_callback_arg);
+        }
+    }
+#endif
+
+    OPENSSL_cleanse(&(exp_key[0]), sizeof(exp_key));
+    OPENSSL_cleanse(&(exp_iv[0]), sizeof(exp_iv));
+    EVP_MD_CTX_cleanup(&md);
+    return (1);
+ err:
+    SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
+ err2:
+    return (0);
+}
+
+int ssl3_setup_key_block(SSL *s)
+{
+    unsigned char *p;
+    const EVP_CIPHER *c;
+    const EVP_MD *hash;
+    int num;
+    int ret = 0;
+    SSL_COMP *comp;
+
+    if (s->s3->tmp.key_block_length != 0)
+        return (1);
+
+    if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp)) {
+        SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
+        return (0);
+    }
+
+    s->s3->tmp.new_sym_enc = c;
+    s->s3->tmp.new_hash = hash;
+#ifdef OPENSSL_NO_COMP
+    s->s3->tmp.new_compression = NULL;
+#else
+    s->s3->tmp.new_compression = comp;
+#endif
+
+    num = EVP_MD_size(hash);
+    if (num < 0)
+        return 0;
+
+    num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
+    num *= 2;
+
+    ssl3_cleanup_key_block(s);
+
+    if ((p = OPENSSL_malloc(num)) == NULL)
+        goto err;
+
+    s->s3->tmp.key_block_length = num;
+    s->s3->tmp.key_block = p;
+
+    ret = ssl3_generate_key_block(s, p, num);
+
+    if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
+        /*
+         * enable vulnerability countermeasure for CBC ciphers with known-IV
+         * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
+         */
+        s->s3->need_empty_fragments = 1;
+
+        if (s->session->cipher != NULL) {
+            if (s->session->cipher->algorithm_enc == SSL_eNULL)
+                s->s3->need_empty_fragments = 0;
+
+#ifndef OPENSSL_NO_RC4
+            if (s->session->cipher->algorithm_enc == SSL_RC4)
+                s->s3->need_empty_fragments = 0;
+#endif
+        }
+    }
+
+    return ret;
+
+ err:
+    SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
+    return (0);
+}
+
+void ssl3_cleanup_key_block(SSL *s)
+{
+    if (s->s3->tmp.key_block != NULL) {
+        OPENSSL_cleanse(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
+        OPENSSL_free(s->s3->tmp.key_block);
+        s->s3->tmp.key_block = NULL;
+    }
+    s->s3->tmp.key_block_length = 0;
+}
+
+/*-
+ * ssl3_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
+ *
+ * Returns:
+ *   0: (in non-constant time) if the record is publically invalid (i.e. too
+ *       short etc).
+ *   1: if the record's padding is valid / the encryption was successful.
+ *   -1: if the record's padding is invalid or, if sending, an internal error
+ *       occured.
+ */
+int ssl3_enc(SSL *s, int send)
+{
+    SSL3_RECORD *rec;
+    EVP_CIPHER_CTX *ds;
+    unsigned long l;
+    int bs, i, mac_size = 0;
+    const EVP_CIPHER *enc;
+
+    if (send) {
+        ds = s->enc_write_ctx;
+        rec = &(s->s3->wrec);
+        if (s->enc_write_ctx == NULL)
+            enc = NULL;
+        else
+            enc = EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
+    } else {
+        ds = s->enc_read_ctx;
+        rec = &(s->s3->rrec);
+        if (s->enc_read_ctx == NULL)
+            enc = NULL;
+        else
+            enc = EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
+    }
+
+    if ((s->session == NULL) || (ds == NULL) || (enc == NULL)) {
+        memmove(rec->data, rec->input, rec->length);
+        rec->input = rec->data;
+    } else {
+        l = rec->length;
+        bs = EVP_CIPHER_block_size(ds->cipher);
+
+        /* COMPRESS */
+
+        if ((bs != 1) && send) {
+            i = bs - ((int)l % bs);
+
+            /* we need to add 'i-1' padding bytes */
+            l += i;
+            /*
+             * the last of these zero bytes will be overwritten with the
+             * padding length.
+             */
+            memset(&rec->input[rec->length], 0, i);
+            rec->length += i;
+            rec->input[l - 1] = (i - 1);
+        }
+
+        if (!send) {
+            if (l == 0 || l % bs != 0)
+                return 0;
+            /* otherwise, rec->length >= bs */
+        }
+
+        if (EVP_Cipher(ds, rec->data, rec->input, l) < 1)
+            return -1;
+
+        if (EVP_MD_CTX_md(s->read_hash) != NULL)
+            mac_size = EVP_MD_CTX_size(s->read_hash);
+        if ((bs != 1) && !send)
+            return ssl3_cbc_remove_padding(s, rec, bs, mac_size);
+    }
+    return (1);
+}
+
+void ssl3_init_finished_mac(SSL *s)
+{
+    if (s->s3->handshake_buffer)
+        BIO_free(s->s3->handshake_buffer);
+    if (s->s3->handshake_dgst)
+        ssl3_free_digest_list(s);
+    s->s3->handshake_buffer = BIO_new(BIO_s_mem());
+    (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
+}
+
+void ssl3_free_digest_list(SSL *s)
+{
+    int i;
+    if (!s->s3->handshake_dgst)
+        return;
+    for (i = 0; i < SSL_MAX_DIGEST; i++) {
+        if (s->s3->handshake_dgst[i])
+            EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
+    }
+    OPENSSL_free(s->s3->handshake_dgst);
+    s->s3->handshake_dgst = NULL;
+}
+
+void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
+{
+    if (s->s3->handshake_buffer
+        && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) {
+        BIO_write(s->s3->handshake_buffer, (void *)buf, len);
+    } else {
+        int i;
+        for (i = 0; i < SSL_MAX_DIGEST; i++) {
+            if (s->s3->handshake_dgst[i] != NULL)
+                EVP_DigestUpdate(s->s3->handshake_dgst[i], buf, len);
+        }
+    }
+}
+
+int ssl3_digest_cached_records(SSL *s)
+{
+    int i;
+    long mask;
+    const EVP_MD *md;
+    long hdatalen;
+    void *hdata;
+
+    /* Allocate handshake_dgst array */
+    ssl3_free_digest_list(s);
+    s->s3->handshake_dgst =
+        OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
+    if (s->s3->handshake_dgst == NULL) {
+        SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    memset(s->s3->handshake_dgst, 0, SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
+    hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
+    if (hdatalen <= 0) {
+        SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
+        return 0;
+    }
+
+    /* Loop through bitso of algorithm2 field and create MD_CTX-es */
+    for (i = 0; ssl_get_handshake_digest(i, &mask, &md); i++) {
+        if ((mask & ssl_get_algorithm2(s)) && md) {
+            s->s3->handshake_dgst[i] = EVP_MD_CTX_create();
+#ifdef OPENSSL_FIPS
+            if (EVP_MD_nid(md) == NID_md5) {
+                EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i],
+                                     EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+            }
+#endif
+            if (!EVP_DigestInit_ex(s->s3->handshake_dgst[i], md, NULL)
+                || !EVP_DigestUpdate(s->s3->handshake_dgst[i], hdata,
+                                     hdatalen)) {
+                SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_INTERNAL_ERROR);
+                return 0;
+            }
+        } else {
+            s->s3->handshake_dgst[i] = NULL;
+        }
+    }
+    if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) {
+        /* Free handshake_buffer BIO */
+        BIO_free(s->s3->handshake_buffer);
+        s->s3->handshake_buffer = NULL;
+    }
+
+    return 1;
+}
+
+int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p)
+{
+    return (ssl3_handshake_mac(s, md_nid, NULL, 0, p));
+}
+
+int ssl3_final_finish_mac(SSL *s,
+                          const char *sender, int len, unsigned char *p)
+{
+    int ret, sha1len;
+    ret = ssl3_handshake_mac(s, NID_md5, sender, len, p);
+    if (ret == 0)
+        return 0;
+
+    p += ret;
+
+    sha1len = ssl3_handshake_mac(s, NID_sha1, sender, len, p);
+    if (sha1len == 0)
+        return 0;
+
+    ret += sha1len;
+    return (ret);
+}
+
+static int ssl3_handshake_mac(SSL *s, int md_nid,
+                              const char *sender, int len, unsigned char *p)
+{
+    unsigned int ret;
+    int npad, n;
+    unsigned int i;
+    unsigned char md_buf[EVP_MAX_MD_SIZE];
+    EVP_MD_CTX ctx, *d = NULL;
+
+    if (s->s3->handshake_buffer)
+        if (!ssl3_digest_cached_records(s))
+            return 0;
+
+    /*
+     * Search for digest of specified type in the handshake_dgst array
+     */
+    for (i = 0; i < SSL_MAX_DIGEST; i++) {
+        if (s->s3->handshake_dgst[i]
+            && EVP_MD_CTX_type(s->s3->handshake_dgst[i]) == md_nid) {
+            d = s->s3->handshake_dgst[i];
+            break;
+        }
+    }
+    if (!d) {
+        SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, SSL_R_NO_REQUIRED_DIGEST);
+        return 0;
+    }
+    EVP_MD_CTX_init(&ctx);
+    EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+    EVP_MD_CTX_copy_ex(&ctx, d);
+    n = EVP_MD_CTX_size(&ctx);
+    if (n < 0)
+        return 0;
+
+    npad = (48 / n) * n;
+    if ((sender != NULL && EVP_DigestUpdate(&ctx, sender, len) <= 0)
+            || EVP_DigestUpdate(&ctx, s->session->master_key,
+                                s->session->master_key_length) <= 0
+            || EVP_DigestUpdate(&ctx, ssl3_pad_1, npad) <= 0
+            || EVP_DigestFinal_ex(&ctx, md_buf, &i) <= 0
+
+            || EVP_DigestInit_ex(&ctx, EVP_MD_CTX_md(&ctx), NULL) <= 0
+            || EVP_DigestUpdate(&ctx, s->session->master_key,
+                                s->session->master_key_length) <= 0
+            || EVP_DigestUpdate(&ctx, ssl3_pad_2, npad) <= 0
+            || EVP_DigestUpdate(&ctx, md_buf, i) <= 0
+            || EVP_DigestFinal_ex(&ctx, p, &ret) <= 0) {
+        SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, ERR_R_INTERNAL_ERROR);
+        ret = 0;
+    }
+
+    EVP_MD_CTX_cleanup(&ctx);
+
+    return ((int)ret);
+}
+
+int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
+{
+    SSL3_RECORD *rec;
+    unsigned char *mac_sec, *seq;
+    EVP_MD_CTX md_ctx;
+    const EVP_MD_CTX *hash;
+    unsigned char *p, rec_char;
+    size_t md_size, orig_len;
+    int npad;
+    int t;
+
+    if (send) {
+        rec = &(ssl->s3->wrec);
+        mac_sec = &(ssl->s3->write_mac_secret[0]);
+        seq = &(ssl->s3->write_sequence[0]);
+        hash = ssl->write_hash;
+    } else {
+        rec = &(ssl->s3->rrec);
+        mac_sec = &(ssl->s3->read_mac_secret[0]);
+        seq = &(ssl->s3->read_sequence[0]);
+        hash = ssl->read_hash;
+    }
+
+    t = EVP_MD_CTX_size(hash);
+    if (t < 0)
+        return -1;
+    md_size = t;
+    npad = (48 / md_size) * md_size;
+
+    /*
+     * kludge: ssl3_cbc_remove_padding passes padding length in rec->type
+     */
+    orig_len = rec->length + md_size + ((unsigned int)rec->type >> 8);
+    rec->type &= 0xff;
+
+    if (!send &&
+        EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
+        ssl3_cbc_record_digest_supported(hash)) {
+        /*
+         * This is a CBC-encrypted record. We must avoid leaking any
+         * timing-side channel information about how many blocks of data we
+         * are hashing because that gives an attacker a timing-oracle.
+         */
+
+        /*-
+         * npad is, at most, 48 bytes and that's with MD5:
+         *   16 + 48 + 8 (sequence bytes) + 1 + 2 = 75.
+         *
+         * With SHA-1 (the largest hash speced for SSLv3) the hash size
+         * goes up 4, but npad goes down by 8, resulting in a smaller
+         * total size.
+         */
+        unsigned char header[75];
+        unsigned j = 0;
+        memcpy(header + j, mac_sec, md_size);
+        j += md_size;
+        memcpy(header + j, ssl3_pad_1, npad);
+        j += npad;
+        memcpy(header + j, seq, 8);
+        j += 8;
+        header[j++] = rec->type;
+        header[j++] = rec->length >> 8;
+        header[j++] = rec->length & 0xff;
+
+        /* Final param == is SSLv3 */
+        if (ssl3_cbc_digest_record(hash,
+                                   md, &md_size,
+                                   header, rec->input,
+                                   rec->length + md_size, orig_len,
+                                   mac_sec, md_size, 1) <= 0)
+            return -1;
+    } else {
+        unsigned int md_size_u;
+        /* Chop the digest off the end :-) */
+        EVP_MD_CTX_init(&md_ctx);
+
+        rec_char = rec->type;
+        p = md;
+        s2n(rec->length, p);
+        if (EVP_MD_CTX_copy_ex(&md_ctx, hash) <= 0
+                || EVP_DigestUpdate(&md_ctx, mac_sec, md_size) <= 0
+                || EVP_DigestUpdate(&md_ctx, ssl3_pad_1, npad) <= 0
+                || EVP_DigestUpdate(&md_ctx, seq, 8) <= 0
+                || EVP_DigestUpdate(&md_ctx, &rec_char, 1) <= 0
+                || EVP_DigestUpdate(&md_ctx, md, 2) <= 0
+                || EVP_DigestUpdate(&md_ctx, rec->input, rec->length) <= 0
+                || EVP_DigestFinal_ex(&md_ctx, md, NULL) <= 0
+                || EVP_MD_CTX_copy_ex(&md_ctx, hash) <= 0
+                || EVP_DigestUpdate(&md_ctx, mac_sec, md_size) <= 0
+                || EVP_DigestUpdate(&md_ctx, ssl3_pad_2, npad) <= 0
+                || EVP_DigestUpdate(&md_ctx, md, md_size) <= 0
+                || EVP_DigestFinal_ex(&md_ctx, md, &md_size_u) <= 0) {
+            EVP_MD_CTX_cleanup(&md_ctx);
+            return -1;
+        }
+        md_size = md_size_u;
+
+        EVP_MD_CTX_cleanup(&md_ctx);
+    }
+
+    ssl3_record_sequence_update(seq);
+    return (md_size);
+}
+
+void ssl3_record_sequence_update(unsigned char *seq)
+{
+    int i;
+
+    for (i = 7; i >= 0; i--) {
+        ++seq[i];
+        if (seq[i] != 0)
+            break;
+    }
+}
+
+int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
+                                int len)
+{
+    static const unsigned char *salt[3] = {
+#ifndef CHARSET_EBCDIC
+        (const unsigned char *)"A",
+        (const unsigned char *)"BB",
+        (const unsigned char *)"CCC",
+#else
+        (const unsigned char *)"\x41",
+        (const unsigned char *)"\x42\x42",
+        (const unsigned char *)"\x43\x43\x43",
+#endif
+    };
+    unsigned char buf[EVP_MAX_MD_SIZE];
+    EVP_MD_CTX ctx;
+    int i, ret = 0;
+    unsigned int n;
+#ifdef OPENSSL_SSL_TRACE_CRYPTO
+    unsigned char *tmpout = out;
+#endif
+
+    EVP_MD_CTX_init(&ctx);
+    for (i = 0; i < 3; i++) {
+        if (EVP_DigestInit_ex(&ctx, s->ctx->sha1, NULL) <= 0
+                || EVP_DigestUpdate(&ctx, salt[i],
+                                    strlen((const char *)salt[i])) <= 0
+                || EVP_DigestUpdate(&ctx, p, len) <= 0
+                || EVP_DigestUpdate(&ctx, &(s->s3->client_random[0]),
+                                    SSL3_RANDOM_SIZE) <= 0
+                || EVP_DigestUpdate(&ctx, &(s->s3->server_random[0]),
+                                    SSL3_RANDOM_SIZE) <= 0
+                || EVP_DigestFinal_ex(&ctx, buf, &n) <= 0
+
+                || EVP_DigestInit_ex(&ctx, s->ctx->md5, NULL) <= 0
+                || EVP_DigestUpdate(&ctx, p, len) <= 0
+                || EVP_DigestUpdate(&ctx, buf, n) <= 0
+                || EVP_DigestFinal_ex(&ctx, out, &n) <= 0) {
+            SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
+            ret = 0;
+            break;
+        }
+        out += n;
+        ret += n;
+    }
+    EVP_MD_CTX_cleanup(&ctx);
+
+#ifdef OPENSSL_SSL_TRACE_CRYPTO
+    if (ret > 0 && s->msg_callback) {
+        s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
+                        p, len, s, s->msg_callback_arg);
+        s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
+                        s->s3->client_random, SSL3_RANDOM_SIZE,
+                        s, s->msg_callback_arg);
+        s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
+                        s->s3->server_random, SSL3_RANDOM_SIZE,
+                        s, s->msg_callback_arg);
+        s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
+                        tmpout, SSL3_MASTER_SECRET_SIZE,
+                        s, s->msg_callback_arg);
+    }
+#endif
+    OPENSSL_cleanse(buf, sizeof buf);
+    return (ret);
+}
+
+int ssl3_alert_code(int code)
+{
+    switch (code) {
+    case SSL_AD_CLOSE_NOTIFY:
+        return (SSL3_AD_CLOSE_NOTIFY);
+    case SSL_AD_UNEXPECTED_MESSAGE:
+        return (SSL3_AD_UNEXPECTED_MESSAGE);
+    case SSL_AD_BAD_RECORD_MAC:
+        return (SSL3_AD_BAD_RECORD_MAC);
+    case SSL_AD_DECRYPTION_FAILED:
+        return (SSL3_AD_BAD_RECORD_MAC);
+    case SSL_AD_RECORD_OVERFLOW:
+        return (SSL3_AD_BAD_RECORD_MAC);
+    case SSL_AD_DECOMPRESSION_FAILURE:
+        return (SSL3_AD_DECOMPRESSION_FAILURE);
+    case SSL_AD_HANDSHAKE_FAILURE:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_NO_CERTIFICATE:
+        return (SSL3_AD_NO_CERTIFICATE);
+    case SSL_AD_BAD_CERTIFICATE:
+        return (SSL3_AD_BAD_CERTIFICATE);
+    case SSL_AD_UNSUPPORTED_CERTIFICATE:
+        return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
+    case SSL_AD_CERTIFICATE_REVOKED:
+        return (SSL3_AD_CERTIFICATE_REVOKED);
+    case SSL_AD_CERTIFICATE_EXPIRED:
+        return (SSL3_AD_CERTIFICATE_EXPIRED);
+    case SSL_AD_CERTIFICATE_UNKNOWN:
+        return (SSL3_AD_CERTIFICATE_UNKNOWN);
+    case SSL_AD_ILLEGAL_PARAMETER:
+        return (SSL3_AD_ILLEGAL_PARAMETER);
+    case SSL_AD_UNKNOWN_CA:
+        return (SSL3_AD_BAD_CERTIFICATE);
+    case SSL_AD_ACCESS_DENIED:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_DECODE_ERROR:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_DECRYPT_ERROR:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_EXPORT_RESTRICTION:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_PROTOCOL_VERSION:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_INSUFFICIENT_SECURITY:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_INTERNAL_ERROR:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_USER_CANCELLED:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_NO_RENEGOTIATION:
+        return (-1);            /* Don't send it :-) */
+    case SSL_AD_UNSUPPORTED_EXTENSION:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_CERTIFICATE_UNOBTAINABLE:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_UNRECOGNIZED_NAME:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
+        return (SSL3_AD_HANDSHAKE_FAILURE);
+    case SSL_AD_UNKNOWN_PSK_IDENTITY:
+        return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
+    case SSL_AD_INAPPROPRIATE_FALLBACK:
+        return (TLS1_AD_INAPPROPRIATE_FALLBACK);
+    default:
+        return (-1);
+    }
+}