Initial support for pluggable public key ASN1 support. Process most public

key ASN1 handling through a single EVP_PKEY_ASN1_METHOD structure and move
the spaghetti algorithm specific code to a single ASN1 module for each
algorithm.

1 files changed, 154 insertions, 0 deletions

diff --git a/crypto/rsa/rsa_ameth.c b/crypto/rsa/rsa_ameth.c
new file mode 100644
index 0000000000..96e537571c
--- /dev/null
+++ b/crypto/rsa/rsa_ameth.c
@@ -0,0 +1,154 @@
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/rsa.h>
+
+static int rsa_pub_encode(X509_PUBKEY *pk, EVP_PKEY *pkey)
+	{
+	unsigned char *penc = NULL;
+	int penclen;
+	penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
+	if (penclen <= 0)
+		return 0;
+	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
+				V_ASN1_NULL, NULL, penc, penclen))
+		return 1;
+
+	OPENSSL_free(penc);
+	return 0;
+	}
+
+static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
+	{
+	const unsigned char *p;
+	int pklen;
+	RSA *rsa = NULL;
+	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
+		return 0;
+	if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen)))
+		{
+		RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
+		return 0;
+		}
+	EVP_PKEY_assign_RSA (pkey, rsa);
+	return 1;
+	}
+
+static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
+	{
+	const unsigned char *p;
+	int pklen;
+	RSA *rsa = NULL;
+	if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
+		return 0;
+	if (!(rsa = d2i_RSAPrivateKey (NULL, &p, pklen)))
+		{
+		RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
+		return 0;
+		}
+	EVP_PKEY_assign_RSA (pkey, rsa);
+	return 1;
+	}
+
+static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
+	{
+	unsigned char *rk = NULL;
+	int rklen;
+	rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
+
+	if (rklen <= 0)
+		{
+		RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
+		return 0;
+		}
+
+	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0,
+				V_ASN1_NULL, NULL, rk, rklen))
+		{
+		RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
+		return 0;
+		}
+
+	return 1;
+	}
+
+const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = 
+	{
+		{
+		EVP_PKEY_RSA,
+		EVP_PKEY_RSA,
+		0,
+		rsa_pub_decode,
+		rsa_pub_encode,
+		0,
+		rsa_priv_decode,
+		rsa_priv_encode,
+		0,
+		0,
+		0
+		},
+
+		{
+		EVP_PKEY_RSA2,
+		EVP_PKEY_RSA,
+		ASN1_PKEY_ALIAS
+		}
+	};