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- /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2006.
- */
- /* ====================================================================
- * Copyright (c) 2006 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
- * licensing@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). */
-
- #include <openssl/evp.h>
-
- #include <openssl/bn.h>
- #include <openssl/bytestring.h>
- #include <openssl/digest.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/rsa.h>
-
- #include "../rsa/internal.h"
- #include "internal.h"
-
-
- static int rsa_pub_encode(CBB *out, const EVP_PKEY *key) {
- /* See RFC 3279, section 2.3.1. */
- CBB spki, algorithm, oid, null, key_bitstring;
- if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
- !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
- !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
- !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
- !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
- !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
- !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
- !RSA_marshal_public_key(&key_bitstring, key->pkey.rsa) ||
- !CBB_flush(out)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
- return 0;
- }
-
- return 1;
- }
-
- static int rsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
- /* See RFC 3279, section 2.3.1. */
-
- /* The parameters must be NULL. */
- CBS null;
- if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
- CBS_len(&null) != 0 ||
- CBS_len(params) != 0) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
- return 0;
- }
-
- /* Estonian IDs issued between September 2014 to September 2015 are
- * broken. See https://crbug.com/532048 and https://crbug.com/534766.
- *
- * TODO(davidben): Switch this to the strict version in March 2016 or when
- * Chromium can force client certificates down a different codepath, whichever
- * comes first. */
- RSA *rsa = RSA_parse_public_key_buggy(key);
- if (rsa == NULL || CBS_len(key) != 0) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
- RSA_free(rsa);
- return 0;
- }
-
- EVP_PKEY_assign_RSA(out, rsa);
- return 1;
- }
-
- static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
- return BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) == 0 &&
- BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) == 0;
- }
-
- static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
- CBB pkcs8, algorithm, oid, null, private_key;
- if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
- !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
- !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
- !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
- !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
- !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
- !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
- !RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
- !CBB_flush(out)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
- return 0;
- }
-
- return 1;
- }
-
- static int rsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
- /* Per RFC 3447, A.1, the parameters have type NULL. */
- CBS null;
- if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
- CBS_len(&null) != 0 ||
- CBS_len(params) != 0) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
- return 0;
- }
-
- RSA *rsa = RSA_parse_private_key(key);
- if (rsa == NULL || CBS_len(key) != 0) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
- RSA_free(rsa);
- return 0;
- }
-
- EVP_PKEY_assign_RSA(out, rsa);
- return 1;
- }
-
- static int rsa_opaque(const EVP_PKEY *pkey) {
- return RSA_is_opaque(pkey->pkey.rsa);
- }
-
- static int int_rsa_size(const EVP_PKEY *pkey) {
- return RSA_size(pkey->pkey.rsa);
- }
-
- static int rsa_bits(const EVP_PKEY *pkey) {
- return BN_num_bits(pkey->pkey.rsa->n);
- }
-
- static void int_rsa_free(EVP_PKEY *pkey) { RSA_free(pkey->pkey.rsa); }
-
- const EVP_PKEY_ASN1_METHOD rsa_asn1_meth = {
- EVP_PKEY_RSA,
- /* 1.2.840.113549.1.1.1 */
- {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01}, 9,
-
- rsa_pub_decode,
- rsa_pub_encode,
- rsa_pub_cmp,
-
- rsa_priv_decode,
- rsa_priv_encode,
-
- rsa_opaque,
-
- int_rsa_size,
- rsa_bits,
-
- 0,0,0,
-
- int_rsa_free,
- };
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