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- /* 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.] */
-
- #include <openssl/ssl.h>
-
- #include <openssl/err.h>
- #include <openssl/evp.h>
- #include <openssl/mem.h>
- #include <openssl/x509.h>
-
- #include "internal.h"
-
-
- static int ssl_set_cert(CERT *c, X509 *x509);
- static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);
-
- static int is_key_type_supported(int key_type) {
- return key_type == EVP_PKEY_RSA || key_type == EVP_PKEY_EC;
- }
-
- int SSL_use_certificate(SSL *ssl, X509 *x) {
- if (x == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- return ssl_set_cert(ssl->cert, x);
- }
-
- int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *d, int len) {
- X509 *x;
- int ret;
-
- x = d2i_X509(NULL, &d, (long)len);
- if (x == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- ret = SSL_use_certificate(ssl, x);
- X509_free(x);
- return ret;
- }
-
- int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa) {
- EVP_PKEY *pkey;
- int ret;
-
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- pkey = EVP_PKEY_new();
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
- return 0;
- }
-
- RSA_up_ref(rsa);
- EVP_PKEY_assign_RSA(pkey, rsa);
-
- ret = ssl_set_pkey(ssl->cert, pkey);
- EVP_PKEY_free(pkey);
-
- return ret;
- }
-
- static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey) {
- if (!is_key_type_supported(pkey->type)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
- return 0;
- }
-
- if (c->x509 != NULL) {
- /* Sanity-check that the private key and the certificate match, unless the
- * key is opaque (in case of, say, a smartcard). */
- if (!EVP_PKEY_is_opaque(pkey) &&
- !X509_check_private_key(c->x509, pkey)) {
- X509_free(c->x509);
- c->x509 = NULL;
- return 0;
- }
- }
-
- EVP_PKEY_free(c->privatekey);
- c->privatekey = EVP_PKEY_up_ref(pkey);
-
- return 1;
- }
-
- int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der, size_t der_len) {
- RSA *rsa = RSA_private_key_from_bytes(der, der_len);
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- int ret = SSL_use_RSAPrivateKey(ssl, rsa);
- RSA_free(rsa);
- return ret;
- }
-
- int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey) {
- int ret;
-
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- ret = ssl_set_pkey(ssl->cert, pkey);
- return ret;
- }
-
- int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const uint8_t *d, long len) {
- int ret;
- const uint8_t *p;
- EVP_PKEY *pkey;
-
- p = d;
- pkey = d2i_PrivateKey(type, NULL, &p, (long)len);
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- ret = SSL_use_PrivateKey(ssl, pkey);
- EVP_PKEY_free(pkey);
- return ret;
- }
-
- int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) {
- if (x == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- return ssl_set_cert(ctx->cert, x);
- }
-
- static int ssl_set_cert(CERT *c, X509 *x) {
- EVP_PKEY *pkey = X509_get_pubkey(x);
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_X509_LIB);
- return 0;
- }
-
- if (!is_key_type_supported(pkey->type)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
- EVP_PKEY_free(pkey);
- return 0;
- }
-
- if (c->privatekey != NULL) {
- /* Sanity-check that the private key and the certificate match, unless the
- * key is opaque (in case of, say, a smartcard). */
- if (!EVP_PKEY_is_opaque(c->privatekey) &&
- !X509_check_private_key(x, c->privatekey)) {
- /* don't fail for a cert/key mismatch, just free current private key
- * (when switching to a different cert & key, first this function should
- * be used, then ssl_set_pkey */
- EVP_PKEY_free(c->privatekey);
- c->privatekey = NULL;
- /* clear error queue */
- ERR_clear_error();
- }
- }
-
- EVP_PKEY_free(pkey);
-
- X509_free(c->x509);
- c->x509 = X509_up_ref(x);
-
- return 1;
- }
-
- int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const uint8_t *d) {
- X509 *x;
- int ret;
-
- x = d2i_X509(NULL, &d, (long)len);
- if (x == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- ret = SSL_CTX_use_certificate(ctx, x);
- X509_free(x);
- return ret;
- }
-
- int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa) {
- int ret;
- EVP_PKEY *pkey;
-
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- pkey = EVP_PKEY_new();
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
- return 0;
- }
-
- RSA_up_ref(rsa);
- EVP_PKEY_assign_RSA(pkey, rsa);
-
- ret = ssl_set_pkey(ctx->cert, pkey);
- EVP_PKEY_free(pkey);
- return ret;
- }
-
- int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const uint8_t *der,
- size_t der_len) {
- RSA *rsa = RSA_private_key_from_bytes(der, der_len);
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- int ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
- RSA_free(rsa);
- return ret;
- }
-
- int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey) {
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- return ssl_set_pkey(ctx->cert, pkey);
- }
-
- int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const uint8_t *d,
- long len) {
- int ret;
- const uint8_t *p;
- EVP_PKEY *pkey;
-
- p = d;
- pkey = d2i_PrivateKey(type, NULL, &p, (long)len);
- if (pkey == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
- return 0;
- }
-
- ret = SSL_CTX_use_PrivateKey(ctx, pkey);
- EVP_PKEY_free(pkey);
- return ret;
- }
-
- void SSL_set_private_key_method(SSL *ssl,
- const SSL_PRIVATE_KEY_METHOD *key_method) {
- ssl->cert->key_method = key_method;
- }
-
- int SSL_set_private_key_digest_prefs(SSL *ssl, const int *digest_nids,
- size_t num_digests) {
- OPENSSL_free(ssl->cert->digest_nids);
-
- ssl->cert->num_digest_nids = 0;
- ssl->cert->digest_nids = BUF_memdup(digest_nids, num_digests*sizeof(int));
- if (ssl->cert->digest_nids == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- ssl->cert->num_digest_nids = num_digests;
- return 1;
- }
-
- int ssl_has_private_key(SSL *ssl) {
- return ssl->cert->privatekey != NULL || ssl->cert->key_method != NULL;
- }
-
- int ssl_private_key_type(SSL *ssl) {
- if (ssl->cert->key_method != NULL) {
- return ssl->cert->key_method->type(ssl);
- }
- return EVP_PKEY_id(ssl->cert->privatekey);
- }
-
- size_t ssl_private_key_max_signature_len(SSL *ssl) {
- if (ssl->cert->key_method != NULL) {
- return ssl->cert->key_method->max_signature_len(ssl);
- }
- return EVP_PKEY_size(ssl->cert->privatekey);
- }
-
- enum ssl_private_key_result_t ssl_private_key_sign(
- SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out, const EVP_MD *md,
- const uint8_t *in, size_t in_len) {
- if (ssl->cert->key_method != NULL) {
- return ssl->cert->key_method->sign(ssl, out, out_len, max_out, md, in,
- in_len);
- }
-
- enum ssl_private_key_result_t ret = ssl_private_key_failure;
- EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new(ssl->cert->privatekey, NULL);
- if (ctx == NULL) {
- goto end;
- }
-
- size_t len = max_out;
- if (!EVP_PKEY_sign_init(ctx) ||
- !EVP_PKEY_CTX_set_signature_md(ctx, md) ||
- !EVP_PKEY_sign(ctx, out, &len, in, in_len)) {
- goto end;
- }
- *out_len = len;
- ret = ssl_private_key_success;
-
- end:
- EVP_PKEY_CTX_free(ctx);
- return ret;
- }
-
- enum ssl_private_key_result_t ssl_private_key_sign_complete(
- SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out) {
- /* Only custom keys may be asynchronous. */
- return ssl->cert->key_method->sign_complete(ssl, out, out_len, max_out);
- }
-
- enum ssl_private_key_result_t ssl_private_key_decrypt(
- SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
- const uint8_t *in, size_t in_len) {
- if (ssl->cert->key_method != NULL) {
- return ssl->cert->key_method->decrypt(ssl, out, out_len, max_out, in,
- in_len);
- }
-
- if (ssl_private_key_type(ssl) != EVP_PKEY_RSA) {
- /* Decrypt operations are only supported for RSA keys. */
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return ssl_private_key_failure;
- }
-
- enum ssl_private_key_result_t ret = ssl_private_key_failure;
- RSA *rsa = ssl->cert->privatekey->pkey.rsa;
- /* Decrypt with no padding. PKCS#1 padding will be removed as part
- * of the timing-sensitive code by the caller. */
- if (RSA_decrypt(rsa, out_len, out, max_out, in, in_len, RSA_NO_PADDING)) {
- ret = ssl_private_key_success;
- }
- return ret;
- }
-
- enum ssl_private_key_result_t ssl_private_key_decrypt_complete(
- SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out) {
- /* Only custom keys may be asynchronous. */
- return ssl->cert->key_method->decrypt_complete(ssl, out, out_len, max_out);
- }
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