| /* 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 <utility> |
| |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/hmac.h> |
| #include <openssl/md5.h> |
| #include <openssl/mem.h> |
| #include <openssl/nid.h> |
| #include <openssl/rand.h> |
| |
| #include "../crypto/internal.h" |
| #include "internal.h" |
| |
| |
| namespace bssl { |
| |
| // tls1_P_hash computes the TLS P_<hash> function as described in RFC 5246, |
| // section 5. It XORs |out.size()| bytes to |out|, using |md| as the hash and |
| // |secret| as the secret. |label|, |seed1|, and |seed2| are concatenated to |
| // form the seed parameter. It returns true on success and false on failure. |
| static bool tls1_P_hash(Span<uint8_t> out, const EVP_MD *md, |
| Span<const uint8_t> secret, Span<const char> label, |
| Span<const uint8_t> seed1, Span<const uint8_t> seed2) { |
| ScopedHMAC_CTX ctx, ctx_tmp, ctx_init; |
| uint8_t A1[EVP_MAX_MD_SIZE]; |
| unsigned A1_len; |
| bool ret = false; |
| |
| size_t chunk = EVP_MD_size(md); |
| |
| if (!HMAC_Init_ex(ctx_init.get(), secret.data(), secret.size(), md, |
| nullptr) || |
| !HMAC_CTX_copy_ex(ctx.get(), ctx_init.get()) || |
| !HMAC_Update(ctx.get(), reinterpret_cast<const uint8_t *>(label.data()), |
| label.size()) || |
| !HMAC_Update(ctx.get(), seed1.data(), seed1.size()) || |
| !HMAC_Update(ctx.get(), seed2.data(), seed2.size()) || |
| !HMAC_Final(ctx.get(), A1, &A1_len)) { |
| goto err; |
| } |
| |
| for (;;) { |
| unsigned len; |
| uint8_t hmac[EVP_MAX_MD_SIZE]; |
| if (!HMAC_CTX_copy_ex(ctx.get(), ctx_init.get()) || |
| !HMAC_Update(ctx.get(), A1, A1_len) || |
| // Save a copy of |ctx| to compute the next A1 value below. |
| (out.size() > chunk && !HMAC_CTX_copy_ex(ctx_tmp.get(), ctx.get())) || |
| !HMAC_Update(ctx.get(), reinterpret_cast<const uint8_t *>(label.data()), |
| label.size()) || |
| !HMAC_Update(ctx.get(), seed1.data(), seed1.size()) || |
| !HMAC_Update(ctx.get(), seed2.data(), seed2.size()) || |
| !HMAC_Final(ctx.get(), hmac, &len)) { |
| goto err; |
| } |
| assert(len == chunk); |
| |
| // XOR the result into |out|. |
| if (len > out.size()) { |
| len = out.size(); |
| } |
| for (unsigned i = 0; i < len; i++) { |
| out[i] ^= hmac[i]; |
| } |
| out = out.subspan(len); |
| |
| if (out.empty()) { |
| break; |
| } |
| |
| // Calculate the next A1 value. |
| if (!HMAC_Final(ctx_tmp.get(), A1, &A1_len)) { |
| goto err; |
| } |
| } |
| |
| ret = true; |
| |
| err: |
| OPENSSL_cleanse(A1, sizeof(A1)); |
| return ret; |
| } |
| |
| bool tls1_prf(const EVP_MD *digest, Span<uint8_t> out, |
| Span<const uint8_t> secret, Span<const char> label, |
| Span<const uint8_t> seed1, Span<const uint8_t> seed2) { |
| if (out.empty()) { |
| return true; |
| } |
| |
| OPENSSL_memset(out.data(), 0, out.size()); |
| |
| if (digest == EVP_md5_sha1()) { |
| // If using the MD5/SHA1 PRF, |secret| is partitioned between MD5 and SHA-1. |
| size_t secret_half = secret.size() - (secret.size() / 2); |
| if (!tls1_P_hash(out, EVP_md5(), secret.subspan(0, secret_half), label, |
| seed1, seed2)) { |
| return false; |
| } |
| |
| // Note that, if |secret.size()| is odd, the two halves share a byte. |
| secret = secret.subspan(secret.size() - secret_half); |
| digest = EVP_sha1(); |
| } |
| |
| return tls1_P_hash(out, digest, secret, label, seed1, seed2); |
| } |
| |
| static bool ssl3_prf(Span<uint8_t> out, Span<const uint8_t> secret, |
| Span<const char> label, Span<const uint8_t> seed1, |
| Span<const uint8_t> seed2) { |
| ScopedEVP_MD_CTX md5; |
| ScopedEVP_MD_CTX sha1; |
| uint8_t buf[16], smd[SHA_DIGEST_LENGTH]; |
| uint8_t c = 'A'; |
| size_t k = 0; |
| while (!out.empty()) { |
| k++; |
| if (k > sizeof(buf)) { |
| // bug: 'buf' is too small for this ciphersuite |
| OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
| return false; |
| } |
| |
| for (size_t j = 0; j < k; j++) { |
| buf[j] = c; |
| } |
| c++; |
| if (!EVP_DigestInit_ex(sha1.get(), EVP_sha1(), NULL)) { |
| OPENSSL_PUT_ERROR(SSL, ERR_LIB_EVP); |
| return false; |
| } |
| EVP_DigestUpdate(sha1.get(), buf, k); |
| EVP_DigestUpdate(sha1.get(), secret.data(), secret.size()); |
| // |label| is ignored for SSLv3. |
| EVP_DigestUpdate(sha1.get(), seed1.data(), seed1.size()); |
| EVP_DigestUpdate(sha1.get(), seed2.data(), seed2.size()); |
| EVP_DigestFinal_ex(sha1.get(), smd, NULL); |
| |
| if (!EVP_DigestInit_ex(md5.get(), EVP_md5(), NULL)) { |
| OPENSSL_PUT_ERROR(SSL, ERR_LIB_EVP); |
| return false; |
| } |
| EVP_DigestUpdate(md5.get(), secret.data(), secret.size()); |
| EVP_DigestUpdate(md5.get(), smd, SHA_DIGEST_LENGTH); |
| if (out.size() < MD5_DIGEST_LENGTH) { |
| EVP_DigestFinal_ex(md5.get(), smd, NULL); |
| OPENSSL_memcpy(out.data(), smd, out.size()); |
| break; |
| } |
| EVP_DigestFinal_ex(md5.get(), out.data(), NULL); |
| out = out.subspan(MD5_DIGEST_LENGTH); |
| } |
| |
| OPENSSL_cleanse(smd, SHA_DIGEST_LENGTH); |
| return true; |
| } |
| |
| static bool get_key_block_lengths(const SSL *ssl, size_t *out_mac_secret_len, |
| size_t *out_key_len, size_t *out_iv_len, |
| const SSL_CIPHER *cipher) { |
| const EVP_AEAD *aead = NULL; |
| if (!ssl_cipher_get_evp_aead(&aead, out_mac_secret_len, out_iv_len, cipher, |
| ssl_protocol_version(ssl), SSL_is_dtls(ssl))) { |
| OPENSSL_PUT_ERROR(SSL, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); |
| return false; |
| } |
| |
| *out_key_len = EVP_AEAD_key_length(aead); |
| if (*out_mac_secret_len > 0) { |
| // For "stateful" AEADs (i.e. compatibility with pre-AEAD cipher suites) the |
| // key length reported by |EVP_AEAD_key_length| will include the MAC key |
| // bytes and initial implicit IV. |
| if (*out_key_len < *out_mac_secret_len + *out_iv_len) { |
| OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
| return false; |
| } |
| *out_key_len -= *out_mac_secret_len + *out_iv_len; |
| } |
| |
| return true; |
| } |
| |
| static bool setup_key_block(SSL_HANDSHAKE *hs) { |
| SSL *const ssl = hs->ssl; |
| if (!hs->key_block.empty()) { |
| return true; |
| } |
| |
| size_t mac_secret_len, key_len, fixed_iv_len; |
| Array<uint8_t> key_block; |
| if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &fixed_iv_len, |
| hs->new_cipher) || |
| !key_block.Init(2 * (mac_secret_len + key_len + fixed_iv_len)) || |
| !SSL_generate_key_block(ssl, key_block.data(), key_block.size())) { |
| return false; |
| } |
| |
| hs->key_block = std::move(key_block); |
| return true; |
| } |
| |
| int tls1_change_cipher_state(SSL_HANDSHAKE *hs, |
| evp_aead_direction_t direction) { |
| SSL *const ssl = hs->ssl; |
| // Ensure the key block is set up. |
| size_t mac_secret_len, key_len, iv_len; |
| if (!setup_key_block(hs) || |
| !get_key_block_lengths(ssl, &mac_secret_len, &key_len, &iv_len, |
| hs->new_cipher)) { |
| return 0; |
| } |
| |
| if ((mac_secret_len + key_len + iv_len) * 2 != hs->key_block.size()) { |
| OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
| return 0; |
| } |
| |
| Span<const uint8_t> key_block = hs->key_block; |
| Span<const uint8_t> mac_secret, key, iv; |
| if (direction == (ssl->server ? evp_aead_open : evp_aead_seal)) { |
| // Use the client write (server read) keys. |
| mac_secret = key_block.subspan(0, mac_secret_len); |
| key = key_block.subspan(2 * mac_secret_len, key_len); |
| iv = key_block.subspan(2 * mac_secret_len + 2 * key_len, iv_len); |
| } else { |
| // Use the server write (client read) keys. |
| mac_secret = key_block.subspan(mac_secret_len, mac_secret_len); |
| key = key_block.subspan(2 * mac_secret_len + key_len, key_len); |
| iv = key_block.subspan(2 * mac_secret_len + 2 * key_len + iv_len, iv_len); |
| } |
| |
| UniquePtr<SSLAEADContext> aead_ctx = |
| SSLAEADContext::Create(direction, ssl->version, SSL_is_dtls(ssl), |
| hs->new_cipher, key, mac_secret, iv); |
| if (!aead_ctx) { |
| return 0; |
| } |
| |
| if (direction == evp_aead_open) { |
| return ssl->method->set_read_state(ssl, std::move(aead_ctx)); |
| } |
| |
| return ssl->method->set_write_state(ssl, std::move(aead_ctx)); |
| } |
| |
| int tls1_generate_master_secret(SSL_HANDSHAKE *hs, uint8_t *out, |
| Span<const uint8_t> premaster) { |
| static const char kMasterSecretLabel[] = "master secret"; |
| static const char kExtendedMasterSecretLabel[] = "extended master secret"; |
| |
| const SSL *ssl = hs->ssl; |
| auto out_span = MakeSpan(out, SSL3_MASTER_SECRET_SIZE); |
| if (hs->extended_master_secret) { |
| auto label = MakeConstSpan(kExtendedMasterSecretLabel, |
| sizeof(kExtendedMasterSecretLabel) - 1); |
| uint8_t digests[EVP_MAX_MD_SIZE]; |
| size_t digests_len; |
| if (!hs->transcript.GetHash(digests, &digests_len) || |
| !tls1_prf(hs->transcript.Digest(), out_span, premaster, label, |
| MakeConstSpan(digests, digests_len), {})) { |
| return 0; |
| } |
| } else { |
| auto label = |
| MakeConstSpan(kMasterSecretLabel, sizeof(kMasterSecretLabel) - 1); |
| if (ssl_protocol_version(ssl) == SSL3_VERSION) { |
| if (!ssl3_prf(out_span, premaster, label, ssl->s3->client_random, |
| ssl->s3->server_random)) { |
| return 0; |
| } |
| } else { |
| if (!tls1_prf(hs->transcript.Digest(), out_span, premaster, label, |
| ssl->s3->client_random, ssl->s3->server_random)) { |
| return 0; |
| } |
| } |
| } |
| |
| return SSL3_MASTER_SECRET_SIZE; |
| } |
| |
| } // namespace bssl |
| |
| using namespace bssl; |
| |
| size_t SSL_get_key_block_len(const SSL *ssl) { |
| size_t mac_secret_len, key_len, fixed_iv_len; |
| if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &fixed_iv_len, |
| SSL_get_current_cipher(ssl))) { |
| ERR_clear_error(); |
| return 0; |
| } |
| |
| return 2 * (mac_secret_len + key_len + fixed_iv_len); |
| } |
| |
| int SSL_generate_key_block(const SSL *ssl, uint8_t *out, size_t out_len) { |
| const SSL_SESSION *session = SSL_get_session(ssl); |
| auto out_span = MakeSpan(out, out_len); |
| auto master_key = |
| MakeConstSpan(session->master_key, session->master_key_length); |
| static const char kLabel[] = "key expansion"; |
| auto label = MakeConstSpan(kLabel, sizeof(kLabel) - 1); |
| |
| if (ssl_protocol_version(ssl) == SSL3_VERSION) { |
| return ssl3_prf(out_span, master_key, label, ssl->s3->server_random, |
| ssl->s3->client_random); |
| } |
| |
| const EVP_MD *digest = ssl_session_get_digest(session); |
| return tls1_prf(digest, out_span, master_key, label, ssl->s3->server_random, |
| ssl->s3->client_random); |
| } |
| |
| int SSL_export_keying_material(SSL *ssl, uint8_t *out, size_t out_len, |
| const char *label, size_t label_len, |
| const uint8_t *context, size_t context_len, |
| int use_context) { |
| if (!ssl->s3->have_version || ssl->version == SSL3_VERSION) { |
| return 0; |
| } |
| |
| // Exporters may not be used in the middle of a renegotiation. |
| if (SSL_in_init(ssl) && !SSL_in_false_start(ssl)) { |
| return 0; |
| } |
| |
| if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) { |
| if (!use_context) { |
| context = nullptr; |
| context_len = 0; |
| } |
| return tls13_export_keying_material( |
| ssl, MakeSpan(out, out_len), |
| MakeConstSpan(ssl->s3->exporter_secret, ssl->s3->exporter_secret_len), |
| MakeConstSpan(label, label_len), MakeConstSpan(context, context_len)); |
| } |
| |
| size_t seed_len = 2 * SSL3_RANDOM_SIZE; |
| if (use_context) { |
| if (context_len >= 1u << 16) { |
| OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW); |
| return 0; |
| } |
| seed_len += 2 + context_len; |
| } |
| Array<uint8_t> seed; |
| if (!seed.Init(seed_len)) { |
| OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| |
| OPENSSL_memcpy(seed.data(), ssl->s3->client_random, SSL3_RANDOM_SIZE); |
| OPENSSL_memcpy(seed.data() + SSL3_RANDOM_SIZE, ssl->s3->server_random, |
| SSL3_RANDOM_SIZE); |
| if (use_context) { |
| seed[2 * SSL3_RANDOM_SIZE] = static_cast<uint8_t>(context_len >> 8); |
| seed[2 * SSL3_RANDOM_SIZE + 1] = static_cast<uint8_t>(context_len); |
| OPENSSL_memcpy(seed.data() + 2 * SSL3_RANDOM_SIZE + 2, context, context_len); |
| } |
| |
| const SSL_SESSION *session = SSL_get_session(ssl); |
| const EVP_MD *digest = ssl_session_get_digest(session); |
| return tls1_prf( |
| digest, MakeSpan(out, out_len), |
| MakeConstSpan(session->master_key, session->master_key_length), |
| MakeConstSpan(label, label_len), seed, {}); |
| } |
| |
| int SSL_export_early_keying_material( |
| SSL *ssl, uint8_t *out, size_t out_len, const char *label, size_t label_len, |
| const uint8_t *context, size_t context_len) { |
| if (!SSL_in_early_data(ssl) && |
| (!ssl->s3->have_version || |
| ssl_protocol_version(ssl) < TLS1_3_VERSION)) { |
| OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION); |
| return 0; |
| } |
| |
| // The early exporter only exists if we accepted early data or offered it as |
| // a client. |
| if (!SSL_in_early_data(ssl) && !SSL_early_data_accepted(ssl)) { |
| OPENSSL_PUT_ERROR(SSL, SSL_R_EARLY_DATA_NOT_IN_USE); |
| return 0; |
| } |
| |
| return tls13_export_keying_material( |
| ssl, MakeSpan(out, out_len), |
| MakeConstSpan(ssl->s3->early_exporter_secret, |
| ssl->s3->early_exporter_secret_len), |
| MakeConstSpan(label, label_len), MakeConstSpan(context, context_len)); |
| } |