190 lines
6.1 KiB
C
190 lines
6.1 KiB
C
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 2006.
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*/
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/* ====================================================================
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* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com). */
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#include <openssl/bytestring.h>
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#include <openssl/digest.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/rsa.h>
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#include "../fipsmodule/rsa/internal.h"
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#include "internal.h"
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static int rsa_pub_encode(CBB *out, const EVP_PKEY *key) {
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// See RFC 3279, section 2.3.1.
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CBB spki, algorithm, oid, null, key_bitstring;
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if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
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!CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
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!CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
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!CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
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!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
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!CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
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!CBB_add_u8(&key_bitstring, 0 /* padding */) ||
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!RSA_marshal_public_key(&key_bitstring, key->pkey.rsa) ||
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!CBB_flush(out)) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
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return 0;
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}
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return 1;
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}
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static int rsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
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// See RFC 3279, section 2.3.1.
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// The parameters must be NULL.
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CBS null;
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if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
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CBS_len(&null) != 0 ||
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CBS_len(params) != 0) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
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return 0;
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}
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RSA *rsa = RSA_parse_public_key(key);
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if (rsa == NULL || CBS_len(key) != 0) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
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RSA_free(rsa);
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return 0;
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}
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EVP_PKEY_assign_RSA(out, rsa);
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return 1;
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}
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static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
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return BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) == 0 &&
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BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) == 0;
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}
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static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
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CBB pkcs8, algorithm, oid, null, private_key;
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if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
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!CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
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!CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
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!CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
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!CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
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!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
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!CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
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!RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
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!CBB_flush(out)) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
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return 0;
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}
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return 1;
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}
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static int rsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
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// Per RFC 3447, A.1, the parameters have type NULL.
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CBS null;
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if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
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CBS_len(&null) != 0 ||
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CBS_len(params) != 0) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
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return 0;
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}
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RSA *rsa = RSA_parse_private_key(key);
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if (rsa == NULL || CBS_len(key) != 0) {
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OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
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RSA_free(rsa);
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return 0;
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}
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EVP_PKEY_assign_RSA(out, rsa);
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return 1;
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}
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static int rsa_opaque(const EVP_PKEY *pkey) {
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return RSA_is_opaque(pkey->pkey.rsa);
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}
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static int int_rsa_size(const EVP_PKEY *pkey) {
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return RSA_size(pkey->pkey.rsa);
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}
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static int rsa_bits(const EVP_PKEY *pkey) {
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return RSA_bits(pkey->pkey.rsa);
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}
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static void int_rsa_free(EVP_PKEY *pkey) { RSA_free(pkey->pkey.rsa); }
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const EVP_PKEY_ASN1_METHOD rsa_asn1_meth = {
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EVP_PKEY_RSA,
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// 1.2.840.113549.1.1.1
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{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01}, 9,
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rsa_pub_decode,
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rsa_pub_encode,
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rsa_pub_cmp,
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rsa_priv_decode,
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rsa_priv_encode,
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rsa_opaque,
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int_rsa_size,
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rsa_bits,
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0,0,0,
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int_rsa_free,
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};
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