--- /dev/null
+/* 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 <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/buf.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/md5.h>
+#include <openssl/nid.h>
+#include <openssl/sha.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+namespace bssl {
+
+SSLTranscript::SSLTranscript() {}
+
+SSLTranscript::~SSLTranscript() {}
+
+bool SSLTranscript::Init() {
+ buffer_.reset(BUF_MEM_new());
+ if (!buffer_) {
+ return false;
+ }
+
+ hash_.Reset();
+ md5_.Reset();
+ return true;
+}
+
+// InitDigestWithData calls |EVP_DigestInit_ex| on |ctx| with |md| and then
+// writes the data in |buf| to it.
+static bool InitDigestWithData(EVP_MD_CTX *ctx, const EVP_MD *md,
+ const BUF_MEM *buf) {
+ if (!EVP_DigestInit_ex(ctx, md, NULL)) {
+ return false;
+ }
+ EVP_DigestUpdate(ctx, buf->data, buf->length);
+ return true;
+}
+
+bool SSLTranscript::InitHash(uint16_t version, const SSL_CIPHER *cipher) {
+ const EVP_MD *md = ssl_get_handshake_digest(version, cipher);
+
+ // To support SSL 3.0's Finished and CertificateVerify constructions,
+ // EVP_md5_sha1() is split into MD5 and SHA-1 halves. When SSL 3.0 is removed,
+ // we can simplify this.
+ if (md == EVP_md5_sha1()) {
+ if (!InitDigestWithData(md5_.get(), EVP_md5(), buffer_.get())) {
+ return false;
+ }
+ md = EVP_sha1();
+ }
+
+ return InitDigestWithData(hash_.get(), md, buffer_.get());
+}
+
+void SSLTranscript::FreeBuffer() {
+ buffer_.reset();
+}
+
+size_t SSLTranscript::DigestLen() const {
+ return EVP_MD_size(Digest());
+}
+
+const EVP_MD *SSLTranscript::Digest() const {
+ if (EVP_MD_CTX_md(md5_.get()) != nullptr) {
+ return EVP_md5_sha1();
+ }
+ return EVP_MD_CTX_md(hash_.get());
+}
+
+bool SSLTranscript::UpdateForHelloRetryRequest() {
+ if (buffer_) {
+ buffer_->length = 0;
+ }
+
+ uint8_t old_hash[EVP_MAX_MD_SIZE];
+ size_t hash_len;
+ if (!GetHash(old_hash, &hash_len)) {
+ return false;
+ }
+ const uint8_t header[4] = {SSL3_MT_MESSAGE_HASH, 0, 0,
+ static_cast<uint8_t>(hash_len)};
+ if (!EVP_DigestInit_ex(hash_.get(), Digest(), nullptr) ||
+ !Update(header) ||
+ !Update(MakeConstSpan(old_hash, hash_len))) {
+ return false;
+ }
+ return true;
+}
+
+bool SSLTranscript::CopyHashContext(EVP_MD_CTX *ctx) {
+ return EVP_MD_CTX_copy_ex(ctx, hash_.get());
+}
+
+bool SSLTranscript::Update(Span<const uint8_t> in) {
+ // Depending on the state of the handshake, either the handshake buffer may be
+ // active, the rolling hash, or both.
+ if (buffer_ &&
+ !BUF_MEM_append(buffer_.get(), in.data(), in.size())) {
+ return false;
+ }
+
+ if (EVP_MD_CTX_md(hash_.get()) != NULL) {
+ EVP_DigestUpdate(hash_.get(), in.data(), in.size());
+ }
+ if (EVP_MD_CTX_md(md5_.get()) != NULL) {
+ EVP_DigestUpdate(md5_.get(), in.data(), in.size());
+ }
+
+ return true;
+}
+
+bool SSLTranscript::GetHash(uint8_t *out, size_t *out_len) {
+ ScopedEVP_MD_CTX ctx;
+ unsigned md5_len = 0;
+ if (EVP_MD_CTX_md(md5_.get()) != NULL) {
+ if (!EVP_MD_CTX_copy_ex(ctx.get(), md5_.get()) ||
+ !EVP_DigestFinal_ex(ctx.get(), out, &md5_len)) {
+ return false;
+ }
+ }
+
+ unsigned len;
+ if (!EVP_MD_CTX_copy_ex(ctx.get(), hash_.get()) ||
+ !EVP_DigestFinal_ex(ctx.get(), out + md5_len, &len)) {
+ return false;
+ }
+
+ *out_len = md5_len + len;
+ return true;
+}
+
+static bool SSL3HandshakeMAC(const SSL_SESSION *session,
+ const EVP_MD_CTX *ctx_template, const char *sender,
+ size_t sender_len, uint8_t *p, size_t *out_len) {
+ ScopedEVP_MD_CTX ctx;
+ if (!EVP_MD_CTX_copy_ex(ctx.get(), ctx_template)) {
+ OPENSSL_PUT_ERROR(SSL, ERR_LIB_EVP);
+ return false;
+ }
+
+ static const uint8_t kPad1[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 const uint8_t kPad2[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,
+ };
+
+ size_t n = EVP_MD_CTX_size(ctx.get());
+
+ size_t npad = (48 / n) * n;
+ EVP_DigestUpdate(ctx.get(), sender, sender_len);
+ EVP_DigestUpdate(ctx.get(), session->master_key, session->master_key_length);
+ EVP_DigestUpdate(ctx.get(), kPad1, npad);
+ unsigned md_buf_len;
+ uint8_t md_buf[EVP_MAX_MD_SIZE];
+ EVP_DigestFinal_ex(ctx.get(), md_buf, &md_buf_len);
+
+ if (!EVP_DigestInit_ex(ctx.get(), EVP_MD_CTX_md(ctx.get()), NULL)) {
+ OPENSSL_PUT_ERROR(SSL, ERR_LIB_EVP);
+ return false;
+ }
+ EVP_DigestUpdate(ctx.get(), session->master_key, session->master_key_length);
+ EVP_DigestUpdate(ctx.get(), kPad2, npad);
+ EVP_DigestUpdate(ctx.get(), md_buf, md_buf_len);
+ unsigned len;
+ EVP_DigestFinal_ex(ctx.get(), p, &len);
+
+ *out_len = len;
+ return true;
+}
+
+bool SSLTranscript::GetSSL3CertVerifyHash(uint8_t *out, size_t *out_len,
+ const SSL_SESSION *session,
+ uint16_t signature_algorithm) {
+ if (Digest() != EVP_md5_sha1()) {
+ OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+ return false;
+ }
+
+ if (signature_algorithm == SSL_SIGN_RSA_PKCS1_MD5_SHA1) {
+ size_t md5_len, len;
+ if (!SSL3HandshakeMAC(session, md5_.get(), NULL, 0, out, &md5_len) ||
+ !SSL3HandshakeMAC(session, hash_.get(), NULL, 0, out + md5_len, &len)) {
+ return false;
+ }
+ *out_len = md5_len + len;
+ return true;
+ }
+
+ if (signature_algorithm == SSL_SIGN_ECDSA_SHA1) {
+ return SSL3HandshakeMAC(session, hash_.get(), NULL, 0, out, out_len);
+ }
+
+ OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+ return false;
+}
+
+bool SSLTranscript::GetFinishedMAC(uint8_t *out, size_t *out_len,
+ const SSL_SESSION *session,
+ bool from_server) {
+ if (session->ssl_version == SSL3_VERSION) {
+ if (Digest() != EVP_md5_sha1()) {
+ OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+ return false;
+ }
+
+ const char *sender = from_server ? SSL3_MD_SERVER_FINISHED_CONST
+ : SSL3_MD_CLIENT_FINISHED_CONST;
+ const size_t sender_len = 4;
+ size_t md5_len, len;
+ if (!SSL3HandshakeMAC(session, md5_.get(), sender, sender_len, out,
+ &md5_len) ||
+ !SSL3HandshakeMAC(session, hash_.get(), sender, sender_len,
+ out + md5_len, &len)) {
+ return false;
+ }
+
+ *out_len = md5_len + len;
+ return true;
+ }
+
+ // At this point, the handshake should have released the handshake buffer on
+ // its own.
+ assert(!buffer_);
+
+ static const char kClientLabel[] = "client finished";
+ static const char kServerLabel[] = "server finished";
+ auto label = from_server
+ ? MakeConstSpan(kServerLabel, sizeof(kServerLabel) - 1)
+ : MakeConstSpan(kClientLabel, sizeof(kClientLabel) - 1);
+
+ uint8_t digests[EVP_MAX_MD_SIZE];
+ size_t digests_len;
+ if (!GetHash(digests, &digests_len)) {
+ return false;
+ }
+
+ static const size_t kFinishedLen = 12;
+ if (!tls1_prf(Digest(), MakeSpan(out, kFinishedLen),
+ MakeConstSpan(session->master_key, session->master_key_length),
+ label, MakeConstSpan(digests, digests_len), {})) {
+ return false;
+ }
+
+ *out_len = kFinishedLen;
+ return true;
+}
+
+} // namespace bssl
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