Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 678 insertions, 0 deletions

diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/ssl/t1_enc.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/ssl/t1_enc.c
new file mode 100644
index 000000000..c85c0b031
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/ssl/t1_enc.c
@@ -0,0 +1,678 @@
+/*
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2005 Nokia. 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
+ */
+
+#include <stdio.h>
+#include "ssl_local.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, size_t seed1_len,
+                    const void *seed2, size_t seed2_len,
+                    const void *seed3, size_t seed3_len,
+                    const void *seed4, size_t seed4_len,
+                    const void *seed5, size_t seed5_len,
+                    const unsigned char *sec, size_t slen,
+                    unsigned char *out, size_t olen, int fatal)
+{
+    const EVP_MD *md = ssl_prf_md(s);
+    EVP_PKEY_CTX *pctx = NULL;
+    int ret = 0;
+
+    if (md == NULL) {
+        /* Should never happen */
+        if (fatal)
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_PRF,
+                     ERR_R_INTERNAL_ERROR);
+        else
+            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, (int)slen) <= 0
+        || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, (int)seed1_len) <= 0
+        || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, (int)seed2_len) <= 0
+        || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, (int)seed3_len) <= 0
+        || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, (int)seed4_len) <= 0
+        || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, (int)seed5_len) <= 0
+        || EVP_PKEY_derive(pctx, out, &olen) <= 0) {
+        if (fatal)
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_PRF,
+                     ERR_R_INTERNAL_ERROR);
+        else
+            SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
+
+    ret = 1;
+
+ err:
+    EVP_PKEY_CTX_free(pctx);
+    return ret;
+}
+
+static int tls1_generate_key_block(SSL *s, unsigned char *km, size_t num)
+{
+    int ret;
+
+    /* Calls SSLfatal() as required */
+    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, 1);
+
+    return ret;
+}
+
+int tls1_change_cipher_state(SSL *s, int which)
+{
+    unsigned char *p, *mac_secret;
+    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;
+    size_t *mac_secret_size;
+    EVP_MD_CTX *mac_ctx;
+    EVP_PKEY *mac_key;
+    size_t 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->ext.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) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_MALLOC_FAILURE);
+            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) {
+                SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+                         SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                         SSL_R_COMPRESSION_LIBRARY_ERROR);
+                goto err;
+            }
+        }
+#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 {
+        s->statem.enc_write_state = ENC_WRITE_STATE_INVALID;
+        if (s->ext.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) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        dd = s->enc_write_ctx;
+        if (SSL_IS_DTLS(s)) {
+            mac_ctx = EVP_MD_CTX_new();
+            if (mac_ctx == NULL) {
+                SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+                         SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                         ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            s->write_hash = mac_ctx;
+        } else {
+            mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
+            if (mac_ctx == NULL) {
+                SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+                         SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                         ERR_R_MALLOC_FAILURE);
+                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) {
+                SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+                         SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                        SSL_R_COMPRESSION_LIBRARY_ERROR);
+                goto err;
+            }
+        }
+#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;
+
+    /* TODO(size_t): convert me */
+    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) {
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                 ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
+
+    memcpy(mac_secret, ms, i);
+
+    if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
+        /* TODO(size_t): Convert this function */
+        mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, mac_secret,
+                                               (int)*mac_secret_size);
+        if (mac_key == NULL
+            || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
+            EVP_PKEY_free(mac_key);
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+        EVP_PKEY_free(mac_key);
+    }
+#ifdef SSL_DEBUG
+    printf("which = %04X\nmac key=", which);
+    {
+        size_t 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, (int)k,
+                                    iv)) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+    } 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 = EVP_CCM8_TLS_TAG_LEN;
+        else
+            taglen = EVP_CCM_TLS_TAG_LEN;
+        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, (int)k, iv)
+            || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+    } else {
+        if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                     ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+    }
+    /* 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,
+                                (int)*mac_secret_size, mac_secret)) {
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+                 ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
+    s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
+
+#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=");
+    {
+        size_t z;
+        for (z = 0; z < k; z++)
+            printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
+    }
+    printf("\n");
+#endif
+
+    return 1;
+ err:
+    return 0;
+}
+
+int tls1_setup_key_block(SSL *s)
+{
+    unsigned char *p;
+    const EVP_CIPHER *c;
+    const EVP_MD *hash;
+    SSL_COMP *comp;
+    int mac_type = NID_undef;
+    size_t num, 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->ext.use_etm)) {
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, 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) {
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, 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");
+    {
+        size_t 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)) {
+        /* SSLfatal() already called */
+        goto err;
+    }
+#ifdef SSL_DEBUG
+    printf("\nkey block\n");
+    {
+        size_t 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;
+}
+
+size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
+                             unsigned char *out)
+{
+    size_t hashlen;
+    unsigned char hash[EVP_MAX_MD_SIZE];
+
+    if (!ssl3_digest_cached_records(s, 0)) {
+        /* SSLfatal() already called */
+        return 0;
+    }
+
+    if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) {
+        /* SSLfatal() already called */
+        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, 1)) {
+        /* SSLfatal() already called */
+        return 0;
+    }
+    OPENSSL_cleanse(hash, hashlen);
+    return TLS1_FINISH_MAC_LENGTH;
+}
+
+int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
+                                size_t len, size_t *secret_size)
+{
+    if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
+        unsigned char hash[EVP_MAX_MD_SIZE * 2];
+        size_t hashlen;
+        /*
+         * Digest cached records keeping record buffer (if present): this won't
+         * 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)
+                || !ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) {
+            /* SSLfatal() already called */
+            return 0;
+        }
+#ifdef SSL_DEBUG
+        fprintf(stderr, "Handshake hashes:\n");
+        BIO_dump_fp(stderr, (char *)hash, hashlen);
+#endif
+        if (!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, out,
+                      SSL3_MASTER_SECRET_SIZE, 1)) {
+            /* SSLfatal() already called */
+            return 0;
+        }
+        OPENSSL_cleanse(hash, hashlen);
+    } else {
+        if (!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, out,
+                      SSL3_MASTER_SECRET_SIZE, 1)) {
+           /* SSLfatal() already called */
+            return 0;
+        }
+    }
+#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
+
+    *secret_size = SSL3_MASTER_SECRET_SIZE;
+    return 1;
+}
+
+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, 0);
+
+    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;
+    case SSL_AD_CERTIFICATE_REQUIRED:
+        return SSL_AD_HANDSHAKE_FAILURE;
+    default:
+        return -1;
+    }
+}