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Diffstat (limited to 'openssl-1.1.0h/ssl/t1_enc.c')
-rw-r--r--openssl-1.1.0h/ssl/t1_enc.c668
1 files changed, 668 insertions, 0 deletions
diff --git a/openssl-1.1.0h/ssl/t1_enc.c b/openssl-1.1.0h/ssl/t1_enc.c
new file mode 100644
index 0000000..235c5e4
--- /dev/null
+++ b/openssl-1.1.0h/ssl/t1_enc.c
@@ -0,0 +1,668 @@
+/*
+ * Copyright 1995-2016 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
+ */
+
+/* ====================================================================
+ * 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/comp.h>
+#include <openssl/evp.h>
+#include <openssl/kdf.h>
+#include <openssl/rand.h>
+
+/* seed1 through seed5 are concatenated */
+static int tls1_PRF(SSL *s,
+ const void *seed1, int seed1_len,
+ const void *seed2, int seed2_len,
+ const void *seed3, int seed3_len,
+ const void *seed4, int seed4_len,
+ const void *seed5, int seed5_len,
+ const unsigned char *sec, int slen,
+ unsigned char *out, int olen)
+{
+ const EVP_MD *md = ssl_prf_md(s);
+ EVP_PKEY_CTX *pctx = NULL;
+
+ int ret = 0;
+ size_t outlen = olen;
+
+ if (md == NULL) {
+ /* Should never happen */
+ SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+ pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL);
+ if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0
+ || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0
+ || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, slen) <= 0)
+ goto err;
+
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, seed1_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, seed2_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, seed3_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, seed4_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, seed5_len) <= 0)
+ goto err;
+
+ if (EVP_PKEY_derive(pctx, out, &outlen) <= 0)
+ goto err;
+ ret = 1;
+
+ err:
+ EVP_PKEY_CTX_free(pctx);
+ return ret;
+}
+
+static int tls1_generate_key_block(SSL *s, unsigned char *km, int num)
+{
+ int ret;
+ ret = tls1_PRF(s,
+ TLS_MD_KEY_EXPANSION_CONST,
+ TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
+ SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
+ NULL, 0, NULL, 0, s->session->master_key,
+ s->session->master_key_length, km, num);
+
+ return ret;
+}
+
+int tls1_change_cipher_state(SSL *s, int which)
+{
+ unsigned char *p, *mac_secret;
+ unsigned char tmp1[EVP_MAX_KEY_LENGTH];
+ unsigned char tmp2[EVP_MAX_KEY_LENGTH];
+ unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
+ unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
+ unsigned char *ms, *key, *iv;
+ EVP_CIPHER_CTX *dd;
+ const EVP_CIPHER *c;
+#ifndef OPENSSL_NO_COMP
+ const SSL_COMP *comp;
+#endif
+ const EVP_MD *m;
+ int mac_type;
+ int *mac_secret_size;
+ EVP_MD_CTX *mac_ctx;
+ EVP_PKEY *mac_key;
+ int n, i, j, k, cl;
+ int reuse_dd = 0;
+
+ c = s->s3->tmp.new_sym_enc;
+ m = s->s3->tmp.new_hash;
+ mac_type = s->s3->tmp.new_mac_pkey_type;
+#ifndef OPENSSL_NO_COMP
+ comp = s->s3->tmp.new_compression;
+#endif
+
+ if (which & SSL3_CC_READ) {
+ if (s->tlsext_use_etm)
+ s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_READ;
+ else
+ s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_READ;
+
+ if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
+ s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
+ else
+ s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
+
+ if (s->enc_read_ctx != NULL)
+ reuse_dd = 1;
+ else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL)
+ goto err;
+ else
+ /*
+ * make sure it's initialised in case we exit later with an error
+ */
+ EVP_CIPHER_CTX_reset(s->enc_read_ctx);
+ dd = s->enc_read_ctx;
+ mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
+ if (mac_ctx == NULL)
+ goto err;
+#ifndef OPENSSL_NO_COMP
+ COMP_CTX_free(s->expand);
+ s->expand = NULL;
+ if (comp != NULL) {
+ s->expand = COMP_CTX_new(comp->method);
+ if (s->expand == NULL) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
+ SSL_R_COMPRESSION_LIBRARY_ERROR);
+ goto err2;
+ }
+ }
+#endif
+ /*
+ * this is done by dtls1_reset_seq_numbers for DTLS
+ */
+ if (!SSL_IS_DTLS(s))
+ RECORD_LAYER_reset_read_sequence(&s->rlayer);
+ mac_secret = &(s->s3->read_mac_secret[0]);
+ mac_secret_size = &(s->s3->read_mac_secret_size);
+ } else {
+ if (s->tlsext_use_etm)
+ s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE;
+ else
+ s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE;
+
+ if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
+ s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
+ else
+ s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
+ if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
+ reuse_dd = 1;
+ else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
+ goto err;
+ dd = s->enc_write_ctx;
+ if (SSL_IS_DTLS(s)) {
+ mac_ctx = EVP_MD_CTX_new();
+ if (mac_ctx == NULL)
+ goto err;
+ s->write_hash = mac_ctx;
+ } else {
+ mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
+ if (mac_ctx == NULL)
+ goto err;
+ }
+#ifndef OPENSSL_NO_COMP
+ COMP_CTX_free(s->compress);
+ s->compress = NULL;
+ if (comp != NULL) {
+ s->compress = COMP_CTX_new(comp->method);
+ if (s->compress == NULL) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
+ SSL_R_COMPRESSION_LIBRARY_ERROR);
+ goto err2;
+ }
+ }
+#endif
+ /*
+ * this is done by dtls1_reset_seq_numbers for DTLS
+ */
+ if (!SSL_IS_DTLS(s))
+ RECORD_LAYER_reset_write_sequence(&s->rlayer);
+ mac_secret = &(s->s3->write_mac_secret[0]);
+ mac_secret_size = &(s->s3->write_mac_secret_size);
+ }
+
+ if (reuse_dd)
+ EVP_CIPHER_CTX_reset(dd);
+
+ p = s->s3->tmp.key_block;
+ i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
+
+ cl = EVP_CIPHER_key_length(c);
+ j = cl;
+ /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
+ /* If GCM/CCM mode only part of IV comes from PRF */
+ if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
+ k = EVP_GCM_TLS_FIXED_IV_LEN;
+ else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
+ k = EVP_CCM_TLS_FIXED_IV_LEN;
+ else
+ 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;
+ } else {
+ n = i;
+ ms = &(p[n]);
+ n += i + j;
+ key = &(p[n]);
+ n += j + k;
+ iv = &(p[n]);
+ n += k;
+ }
+
+ if (n > s->s3->tmp.key_block_length) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+
+ memcpy(mac_secret, ms, i);
+
+ if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
+ mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
+ mac_secret, *mac_secret_size);
+ if (mac_key == NULL
+ || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
+ EVP_PKEY_free(mac_key);
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+ EVP_PKEY_free(mac_key);
+ }
+#ifdef SSL_DEBUG
+ printf("which = %04X\nmac key=", which);
+ {
+ int z;
+ for (z = 0; z < i; z++)
+ printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
+ }
+#endif
+
+ if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
+ if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
+ || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+ } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
+ int taglen;
+ if (s->s3->tmp.
+ new_cipher->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8))
+ taglen = 8;
+ else
+ taglen = 16;
+ if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
+ || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
+ || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)
+ || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, k, iv)
+ || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+ } else {
+ if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+ }
+ /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
+ if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
+ && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
+ *mac_secret_size, mac_secret)) {
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
+ goto err2;
+ }
+
+#ifdef SSL_DEBUG
+ printf("which = %04X\nkey=", which);
+ {
+ int z;
+ for (z = 0; z < EVP_CIPHER_key_length(c); z++)
+ printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
+ }
+ printf("\niv=");
+ {
+ int z;
+ for (z = 0; z < k; z++)
+ printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
+ }
+ printf("\n");
+#endif
+
+ OPENSSL_cleanse(tmp1, sizeof(tmp1));
+ OPENSSL_cleanse(tmp2, sizeof(tmp1));
+ OPENSSL_cleanse(iv1, sizeof(iv1));
+ OPENSSL_cleanse(iv2, sizeof(iv2));
+ return (1);
+ err:
+ SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
+ err2:
+ OPENSSL_cleanse(tmp1, sizeof(tmp1));
+ OPENSSL_cleanse(tmp2, sizeof(tmp1));
+ OPENSSL_cleanse(iv1, sizeof(iv1));
+ OPENSSL_cleanse(iv2, sizeof(iv2));
+ return (0);
+}
+
+int tls1_setup_key_block(SSL *s)
+{
+ unsigned char *p;
+ const EVP_CIPHER *c;
+ const EVP_MD *hash;
+ int num;
+ SSL_COMP *comp;
+ int mac_type = NID_undef, mac_secret_size = 0;
+ int ret = 0;
+
+ if (s->s3->tmp.key_block_length != 0)
+ return (1);
+
+ if (!ssl_cipher_get_evp(s->session, &c, &hash, &mac_type, &mac_secret_size,
+ &comp, s->tlsext_use_etm)) {
+ SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
+ return (0);
+ }
+
+ s->s3->tmp.new_sym_enc = c;
+ s->s3->tmp.new_hash = hash;
+ s->s3->tmp.new_mac_pkey_type = mac_type;
+ s->s3->tmp.new_mac_secret_size = mac_secret_size;
+ num = EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
+ num *= 2;
+
+ ssl3_cleanup_key_block(s);
+
+ if ((p = OPENSSL_malloc(num)) == NULL) {
+ SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ s->s3->tmp.key_block_length = num;
+ s->s3->tmp.key_block = p;
+
+#ifdef SSL_DEBUG
+ printf("client random\n");
+ {
+ int z;
+ for (z = 0; z < SSL3_RANDOM_SIZE; z++)
+ printf("%02X%c", s->s3->client_random[z],
+ ((z + 1) % 16) ? ' ' : '\n');
+ }
+ printf("server random\n");
+ {
+ int z;
+ for (z = 0; z < SSL3_RANDOM_SIZE; z++)
+ printf("%02X%c", s->s3->server_random[z],
+ ((z + 1) % 16) ? ' ' : '\n');
+ }
+ printf("master key\n");
+ {
+ int z;
+ for (z = 0; z < s->session->master_key_length; z++)
+ printf("%02X%c", s->session->master_key[z],
+ ((z + 1) % 16) ? ' ' : '\n');
+ }
+#endif
+ if (!tls1_generate_key_block(s, p, num))
+ goto err;
+#ifdef SSL_DEBUG
+ printf("\nkey block\n");
+ {
+ int z;
+ for (z = 0; z < num; z++)
+ printf("%02X%c", p[z], ((z + 1) % 16) ? ' ' : '\n');
+ }
+#endif
+
+ if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
+ && s->method->version <= TLS1_VERSION) {
+ /*
+ * 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
+ }
+ }
+
+ ret = 1;
+ err:
+ return (ret);
+}
+
+int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *out)
+{
+ int hashlen;
+ unsigned char hash[EVP_MAX_MD_SIZE];
+
+ if (!ssl3_digest_cached_records(s, 0))
+ return 0;
+
+ hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
+
+ if (hashlen == 0)
+ return 0;
+
+ if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
+ s->session->master_key, s->session->master_key_length,
+ out, TLS1_FINISH_MAC_LENGTH))
+ return 0;
+ OPENSSL_cleanse(hash, hashlen);
+ return TLS1_FINISH_MAC_LENGTH;
+}
+
+int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
+ int len)
+{
+ if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
+ unsigned char hash[EVP_MAX_MD_SIZE * 2];
+ int hashlen;
+ /*
+ * Digest cached records keeping record buffer (if present): this wont
+ * affect client auth because we're freezing the buffer at the same
+ * point (after client key exchange and before certificate verify)
+ */
+ if (!ssl3_digest_cached_records(s, 1))
+ return -1;
+ hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
+#ifdef SSL_DEBUG
+ fprintf(stderr, "Handshake hashes:\n");
+ BIO_dump_fp(stderr, (char *)hash, hashlen);
+#endif
+ tls1_PRF(s,
+ TLS_MD_EXTENDED_MASTER_SECRET_CONST,
+ TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
+ hash, hashlen,
+ NULL, 0,
+ NULL, 0,
+ NULL, 0, p, len, s->session->master_key,
+ SSL3_MASTER_SECRET_SIZE);
+ OPENSSL_cleanse(hash, hashlen);
+ } else {
+ tls1_PRF(s,
+ TLS_MD_MASTER_SECRET_CONST,
+ TLS_MD_MASTER_SECRET_CONST_SIZE,
+ s->s3->client_random, SSL3_RANDOM_SIZE,
+ NULL, 0,
+ s->s3->server_random, SSL3_RANDOM_SIZE,
+ NULL, 0, p, len, s->session->master_key,
+ SSL3_MASTER_SECRET_SIZE);
+ }
+#ifdef SSL_DEBUG
+ fprintf(stderr, "Premaster Secret:\n");
+ BIO_dump_fp(stderr, (char *)p, len);
+ fprintf(stderr, "Client Random:\n");
+ BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
+ fprintf(stderr, "Server Random:\n");
+ BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
+ fprintf(stderr, "Master Secret:\n");
+ BIO_dump_fp(stderr, (char *)s->session->master_key,
+ SSL3_MASTER_SECRET_SIZE);
+#endif
+
+ return (SSL3_MASTER_SECRET_SIZE);
+}
+
+int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
+ const char *label, size_t llen,
+ const unsigned char *context,
+ size_t contextlen, int use_context)
+{
+ unsigned char *val = NULL;
+ size_t vallen = 0, currentvalpos;
+ int rv;
+
+ /*
+ * construct PRF arguments we construct the PRF argument ourself rather
+ * than passing separate values into the TLS PRF to ensure that the
+ * concatenation of values does not create a prohibited label.
+ */
+ vallen = llen + SSL3_RANDOM_SIZE * 2;
+ if (use_context) {
+ vallen += 2 + contextlen;
+ }
+
+ val = OPENSSL_malloc(vallen);
+ if (val == NULL)
+ goto err2;
+ currentvalpos = 0;
+ memcpy(val + currentvalpos, (unsigned char *)label, llen);
+ currentvalpos += llen;
+ memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
+ currentvalpos += SSL3_RANDOM_SIZE;
+ memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
+ currentvalpos += SSL3_RANDOM_SIZE;
+
+ if (use_context) {
+ val[currentvalpos] = (contextlen >> 8) & 0xff;
+ currentvalpos++;
+ val[currentvalpos] = contextlen & 0xff;
+ currentvalpos++;
+ if ((contextlen > 0) || (context != NULL)) {
+ memcpy(val + currentvalpos, context, contextlen);
+ }
+ }
+
+ /*
+ * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
+ * label len) = 15, so size of val > max(prohibited label len) = 15 and
+ * the comparisons won't have buffer overflow
+ */
+ if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
+ TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
+ goto err1;
+ if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
+ TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
+ goto err1;
+ if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
+ TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
+ goto err1;
+ if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
+ TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
+ goto err1;
+ if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
+ TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
+ goto err1;
+
+ rv = tls1_PRF(s,
+ val, vallen,
+ NULL, 0,
+ NULL, 0,
+ NULL, 0,
+ NULL, 0,
+ s->session->master_key, s->session->master_key_length,
+ out, olen);
+
+ goto ret;
+ err1:
+ SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
+ rv = 0;
+ goto ret;
+ err2:
+ SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
+ rv = 0;
+ ret:
+ OPENSSL_clear_free(val, vallen);
+ return (rv);
+}
+
+int tls1_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 (TLS1_AD_DECRYPTION_FAILED);
+ case SSL_AD_RECORD_OVERFLOW:
+ return (TLS1_AD_RECORD_OVERFLOW);
+ 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 (-1);
+ 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 (TLS1_AD_UNKNOWN_CA);
+ case SSL_AD_ACCESS_DENIED:
+ return (TLS1_AD_ACCESS_DENIED);
+ case SSL_AD_DECODE_ERROR:
+ return (TLS1_AD_DECODE_ERROR);
+ case SSL_AD_DECRYPT_ERROR:
+ return (TLS1_AD_DECRYPT_ERROR);
+ case SSL_AD_EXPORT_RESTRICTION:
+ return (TLS1_AD_EXPORT_RESTRICTION);
+ case SSL_AD_PROTOCOL_VERSION:
+ return (TLS1_AD_PROTOCOL_VERSION);
+ case SSL_AD_INSUFFICIENT_SECURITY:
+ return (TLS1_AD_INSUFFICIENT_SECURITY);
+ case SSL_AD_INTERNAL_ERROR:
+ return (TLS1_AD_INTERNAL_ERROR);
+ case SSL_AD_USER_CANCELLED:
+ return (TLS1_AD_USER_CANCELLED);
+ case SSL_AD_NO_RENEGOTIATION:
+ return (TLS1_AD_NO_RENEGOTIATION);
+ case SSL_AD_UNSUPPORTED_EXTENSION:
+ return (TLS1_AD_UNSUPPORTED_EXTENSION);
+ case SSL_AD_CERTIFICATE_UNOBTAINABLE:
+ return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
+ case SSL_AD_UNRECOGNIZED_NAME:
+ return (TLS1_AD_UNRECOGNIZED_NAME);
+ case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
+ return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
+ case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
+ return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
+ case SSL_AD_UNKNOWN_PSK_IDENTITY:
+ return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
+ case SSL_AD_INAPPROPRIATE_FALLBACK:
+ return (TLS1_AD_INAPPROPRIATE_FALLBACK);
+ case SSL_AD_NO_APPLICATION_PROTOCOL:
+ return (TLS1_AD_NO_APPLICATION_PROTOCOL);
+ default:
+ return (-1);
+ }
+}