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openssl/crypto/rsa/rsa_ameth.c

Index: openssl/crypto/rsa/rsa_ameth.c
===================================================================
--- openssl/crypto/rsa/rsa_ameth.c	(revision 0)
+++ openssl/crypto/rsa/rsa_ameth.c	(revision 0)
@@ -0,0 +1,349 @@
+/* crypto/rsa/rsa_ameth.c */
+/* 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 <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/rsa.h>
+#include <openssl/bn.h>
+#ifndef OPENSSL_NO_CMS
+#include <openssl/cms.h>
+#endif
+#include "asn1_locl.h"
+
+static int rsa_pub_encode(X509_PUBKEY *pk, const 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_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
+	{
+	if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
+		|| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
+			return 0;
+	return 1;
+	}
+
+static int old_rsa_priv_decode(EVP_PKEY *pkey,
+					const unsigned char **pder, int derlen)
+	{
+	RSA *rsa;
+	if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen)))
+		{
+		RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
+		return 0;
+		}
+	EVP_PKEY_assign_RSA(pkey, rsa);
+	return 1;
+	}
+
+static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
+	{
+	return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
+	}
+
+static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const 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;
+	}
+
+static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
+	{
+	const unsigned char *p;
+	int pklen;
+	if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
+		return 0;
+	return old_rsa_priv_decode(pkey, &p, pklen);
+	}
+
+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);
+	}
+
+
+static void update_buflen(const BIGNUM *b, size_t *pbuflen)
+	{
+	size_t i;
+	if (!b)
+		return;
+	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
+			*pbuflen = i;
+	}
+
+static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
+	{
+	char *str;
+	const char *s;
+	unsigned char *m=NULL;
+	int ret=0, mod_len = 0;
+	size_t buf_len=0;
+
+	update_buflen(x->n, &buf_len);
+	update_buflen(x->e, &buf_len);
+
+	if (priv)
+		{
+		update_buflen(x->d, &buf_len);
+		update_buflen(x->p, &buf_len);
+		update_buflen(x->q, &buf_len);
+		update_buflen(x->dmp1, &buf_len);
+		update_buflen(x->dmq1, &buf_len);
+		update_buflen(x->iqmp, &buf_len);
+		}
+
+	m=(unsigned char *)OPENSSL_malloc(buf_len+10);
+	if (m == NULL)
+		{
+		RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	if (x->n != NULL)
+		mod_len = BN_num_bits(x->n);
+
+	if(!BIO_indent(bp,off,128))
+		goto err;
+
+	if (priv && x->d)
+		{
+		if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
+			<= 0) goto err;
+		str = "modulus:";
+		s = "publicExponent:";
+		}
+	else
+		{
+		if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
+			<= 0) goto err;
+		str = "Modulus:";
+		s= "Exponent:";
+		}
+	if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
+	if (!ASN1_bn_print(bp,s,x->e,m,off))
+		goto err;
+	if (priv)
+		{
+		if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
+			goto err;
+		}
+	ret=1;
+err:
+	if (m != NULL) OPENSSL_free(m);
+	return(ret);
+	}
+
+static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+							ASN1_PCTX *ctx)
+	{
+	return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
+	}
+
+
+static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+							ASN1_PCTX *ctx)
+	{
+	return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
+	}
+
+
+static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
+	{
+	X509_ALGOR *alg = NULL;
+	switch (op)
+		{
+
+		case ASN1_PKEY_CTRL_PKCS7_SIGN:
+		if (arg1 == 0)
+			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
+		break;
+
+		case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
+		if (arg1 == 0)
+			PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
+		break;
+#ifndef OPENSSL_NO_CMS
+		case ASN1_PKEY_CTRL_CMS_SIGN:
+		if (arg1 == 0)
+			CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg);
+		break;
+
+		case ASN1_PKEY_CTRL_CMS_ENVELOPE:
+		if (arg1 == 0)
+			CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg);
+		break;
+#endif
+
+		case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+		*(int *)arg2 = NID_sha1;
+		return 1;
+
+		default:
+		return -2;
+
+		}
+
+	if (alg)
+		X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption),
+							V_ASN1_NULL, 0);
+
+	return 1;
+
+	}
+
+
+const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = 
+	{
+		{
+		EVP_PKEY_RSA,
+		EVP_PKEY_RSA,
+		ASN1_PKEY_SIGPARAM_NULL,
+
+		"RSA",
+		"OpenSSL RSA method",
+
+		rsa_pub_decode,
+		rsa_pub_encode,
+		rsa_pub_cmp,
+		rsa_pub_print,
+
+		rsa_priv_decode,
+		rsa_priv_encode,
+		rsa_priv_print,
+
+		int_rsa_size,
+		rsa_bits,
+
+		0,0,0,0,0,0,
+
+		int_rsa_free,
+		rsa_pkey_ctrl,
+		old_rsa_priv_decode,
+		old_rsa_priv_encode
+		},
+
+		{
+		EVP_PKEY_RSA2,
+		EVP_PKEY_RSA,
+		ASN1_PKEY_ALIAS
+		}
+	};