--- /dev/null
+/* 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 "../fipsmodule/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;
+ }
+
+ RSA *rsa = RSA_parse_public_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_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 RSA_bits(pkey->pkey.rsa);
+}
+
+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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