crypto/rsa/rsa_ameth.c - platform/external/openssl - Git at Google

 /* 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 RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
 					X509_ALGOR **pmaskHash)
 	{
 	const unsigned char *p;
 	int plen;
 	RSA_PSS_PARAMS *pss;

 	*pmaskHash = NULL;

 	if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE)
 		return NULL;
 	p = alg->parameter->value.sequence->data;
 	plen = alg->parameter->value.sequence->length;
 	pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);

 	if (!pss)
 		return NULL;

 	if (pss->maskGenAlgorithm)
 		{
 		ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
 		if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
 			&& param->type == V_ASN1_SEQUENCE)
 			{
 			p = param->value.sequence->data;
 			plen = param->value.sequence->length;
 			*pmaskHash = d2i_X509_ALGOR(NULL, &p, plen);
 			}
 		}

 	return pss;
 	}

 static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss,
 				X509_ALGOR *maskHash, int indent)
 	{
 	int rv = 0;
 	if (!pss)
 		{
 		if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
 			return 0;
 		return 1;
 		}
 	if (BIO_puts(bp, "\n") <= 0)
 		goto err;
 	if (!BIO_indent(bp, indent, 128))
 		goto err;
 	if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
 		goto err;

 	if (pss->hashAlgorithm)
 		{
 		if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
 			goto err;
 		}
 	else if (BIO_puts(bp, "sha1 (default)") <= 0)
 		goto err;

 	if (BIO_puts(bp, "\n") <= 0)
 		goto err;

 	if (!BIO_indent(bp, indent, 128))
 		goto err;

 	if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
 			goto err;
 	if (pss->maskGenAlgorithm)
 		{
 		if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
 			goto err;
 		if (BIO_puts(bp, " with ") <= 0)
 			goto err;
 		if (maskHash)
 			{
 			if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
 			goto err;
 			}
 		else if (BIO_puts(bp, "INVALID") <= 0)
 			goto err;
 		}
 	else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
 		goto err;
 	BIO_puts(bp, "\n");

 	if (!BIO_indent(bp, indent, 128))
 		goto err;
 	if (BIO_puts(bp, "Salt Length: ") <= 0)
 			goto err;
 	if (pss->saltLength)
 		{
 		if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
 			goto err;
 		}
 	else if (BIO_puts(bp, "20 (default)") <= 0)
 		goto err;
 	BIO_puts(bp, "\n");

 	if (!BIO_indent(bp, indent, 128))
 		goto err;
 	if (BIO_puts(bp, "Trailer Field: ") <= 0)
 			goto err;
 	if (pss->trailerField)
 		{
 		if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
 			goto err;
 		}
 	else if (BIO_puts(bp, "0xbc (default)") <= 0)
 		goto err;
 	BIO_puts(bp, "\n");

 	rv = 1;

 	err:
 	return rv;

 	}

 static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
 					const ASN1_STRING *sig,
 					int indent, ASN1_PCTX *pctx)
 	{
 	if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss)
 		{
 		int rv;
 		RSA_PSS_PARAMS *pss;
 		X509_ALGOR *maskHash;
 		pss = rsa_pss_decode(sigalg, &maskHash);
 		rv = rsa_pss_param_print(bp, pss, maskHash, indent);
 		if (pss)
 			RSA_PSS_PARAMS_free(pss);
 		if (maskHash)
 			X509_ALGOR_free(maskHash);
 		if (!rv)
 			return 0;
 		}
 	else if (!sig && BIO_puts(bp, "\n") <= 0)
 		return 0;
 	if (sig)
 		return X509_signature_dump(bp, sig, indent);
 	return 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;

 	}

 /* Customised RSA item verification routine. This is called
  * when a signature is encountered requiring special handling. We
  * currently only handle PSS.
  */


 static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
 			X509_ALGOR *sigalg, ASN1_BIT_STRING *sig,
 			EVP_PKEY *pkey)
 	{
 	int rv = -1;
 	int saltlen;
 	const EVP_MD *mgf1md = NULL, *md = NULL;
 	RSA_PSS_PARAMS *pss;
 	X509_ALGOR *maskHash;
 	EVP_PKEY_CTX *pkctx;
 	/* Sanity check: make sure it is PSS */
 	if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss)
 		{
 		RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
 		return -1;
 		}
 	/* Decode PSS parameters */
 	pss = rsa_pss_decode(sigalg, &maskHash);

 	if (pss == NULL)
 		{
 		RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS);
 		goto err;
 		}
 	/* Check mask and lookup mask hash algorithm */
 	if (pss->maskGenAlgorithm)
 		{
 		if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1)
 			{
 			RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_ALGORITHM);
 			goto err;
 			}
 		if (!maskHash)
 			{
 			RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_PARAMETER);
 			goto err;
 			}
 		mgf1md = EVP_get_digestbyobj(maskHash->algorithm);
 		if (mgf1md == NULL)
 			{
 			RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_MASK_DIGEST);
 			goto err;
 			}
 		}
 	else
 		mgf1md = EVP_sha1();

 	if (pss->hashAlgorithm)
 		{
 		md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm);
 		if (md == NULL)
 			{
 			RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST);
 			goto err;
 			}
 		}
 	else
 		md = EVP_sha1();

 	if (pss->saltLength)
 		{
 		saltlen = ASN1_INTEGER_get(pss->saltLength);

 		/* Could perform more salt length sanity checks but the main
 		 * RSA routines will trap other invalid values anyway.
 		 */
 		if (saltlen < 0)
 			{
 			RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_SALT_LENGTH);
 			goto err;
 			}
 		}
 	else
 		saltlen = 20;

 	/* low-level routines support only trailer field 0xbc (value 1)
 	 * and PKCS#1 says we should reject any other value anyway.
 	 */
 	if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1)
 		{
 		RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER);
 		goto err;
 		}

 	/* We have all parameters now set up context */

 	if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
 		goto err;

 	if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
 		goto err;

 	if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
 		goto err;

 	if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
 		goto err;
 	/* Carry on */
 	rv = 2;

 	err:
 	RSA_PSS_PARAMS_free(pss);
 	if (maskHash)
 		X509_ALGOR_free(maskHash);
 	return rv;
 	}

 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
 				X509_ALGOR *alg1, X509_ALGOR *alg2,
 				ASN1_BIT_STRING *sig)
 	{
 	int pad_mode;
 	EVP_PKEY_CTX *pkctx = ctx->pctx;
 	if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
 		return 0;
 	if (pad_mode == RSA_PKCS1_PADDING)
 		return 2;
 	if (pad_mode == RSA_PKCS1_PSS_PADDING)
 		{
 		const EVP_MD *sigmd, *mgf1md;
 		RSA_PSS_PARAMS *pss = NULL;
 		X509_ALGOR *mgf1alg = NULL;
 		ASN1_STRING *os1 = NULL, *os2 = NULL;
 		EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
 		int saltlen, rv = 0;
 		sigmd = EVP_MD_CTX_md(ctx);
 		if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
 			goto err;
 		if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
 			goto err;
 		if (saltlen == -1)
 			saltlen = EVP_MD_size(sigmd);
 		else if (saltlen == -2)
 			{
 			saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
 			if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0)
 				saltlen--;
 			}
 		pss = RSA_PSS_PARAMS_new();
 		if (!pss)
 			goto err;
 		if (saltlen != 20)
 			{
 			pss->saltLength = ASN1_INTEGER_new();
 			if (!pss->saltLength)
 				goto err;
 			if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
 				goto err;
 			}
 		if (EVP_MD_type(sigmd) != NID_sha1)
 			{
 			pss->hashAlgorithm = X509_ALGOR_new();
 			if (!pss->hashAlgorithm)
 				goto err;
 			X509_ALGOR_set_md(pss->hashAlgorithm, sigmd);
 			}
 		if (EVP_MD_type(mgf1md) != NID_sha1)
 			{
 			ASN1_STRING *stmp = NULL;
 			/* need to embed algorithm ID inside another */
 			mgf1alg = X509_ALGOR_new();
 			X509_ALGOR_set_md(mgf1alg, mgf1md);
 			if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR),
 									&stmp))
 					goto err;
 			pss->maskGenAlgorithm = X509_ALGOR_new();
 			if (!pss->maskGenAlgorithm)
 				goto err;
 			X509_ALGOR_set0(pss->maskGenAlgorithm,
 					OBJ_nid2obj(NID_mgf1),
 					V_ASN1_SEQUENCE, stmp);
 			}
 		/* Finally create string with pss parameter encoding. */
 		if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1))
 			goto err;
 		if (alg2)
 			{
 			os2 = ASN1_STRING_dup(os1);
 			if (!os2)
 				goto err;
 			X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss),
 						V_ASN1_SEQUENCE, os2);
 			}
 		X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss),
 					V_ASN1_SEQUENCE, os1);
 		os1 = os2 = NULL;
 		rv = 3;
 		err:
 		if (mgf1alg)
 			X509_ALGOR_free(mgf1alg);
 		if (pss)
 			RSA_PSS_PARAMS_free(pss);
 		if (os1)
 			ASN1_STRING_free(os1);
 		return rv;

 		}
 	return 2;
 	}

 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,

 		rsa_sig_print,
 		int_rsa_free,
 		rsa_pkey_ctrl,
 		old_rsa_priv_decode,
 		old_rsa_priv_encode,
 		rsa_item_verify,
 		rsa_item_sign
 		},

 		{
 		EVP_PKEY_RSA2,
 		EVP_PKEY_RSA,
 		ASN1_PKEY_ALIAS
 		}
 	};
	/* 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 RSA_PSS_PARAMS rsa_pss_decode(const X509_ALGOR alg,
	X509_ALGOR **pmaskHash)
	{
	const unsigned char *p;
	int plen;
	RSA_PSS_PARAMS *pss;

	*pmaskHash = NULL;

	if (!alg->parameter \|\| alg->parameter->type != V_ASN1_SEQUENCE)
	return NULL;
	p = alg->parameter->value.sequence->data;
	plen = alg->parameter->value.sequence->length;
	pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);

	if (!pss)
	return NULL;

	if (pss->maskGenAlgorithm)
	{
	ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
	if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
	&& param->type == V_ASN1_SEQUENCE)
	{
	p = param->value.sequence->data;
	plen = param->value.sequence->length;
	*pmaskHash = d2i_X509_ALGOR(NULL, &p, plen);
	}
	}

	return pss;
	}

	static int rsa_pss_param_print(BIO bp, RSA_PSS_PARAMS pss,
	X509_ALGOR *maskHash, int indent)
	{
	int rv = 0;
	if (!pss)
	{
	if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
	return 0;
	return 1;
	}
	if (BIO_puts(bp, "\n") <= 0)
	goto err;
	if (!BIO_indent(bp, indent, 128))
	goto err;
	if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
	goto err;

	if (pss->hashAlgorithm)
	{
	if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
	goto err;
	}
	else if (BIO_puts(bp, "sha1 (default)") <= 0)
	goto err;

	if (BIO_puts(bp, "\n") <= 0)
	goto err;

	if (!BIO_indent(bp, indent, 128))
	goto err;

	if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
	goto err;
	if (pss->maskGenAlgorithm)
	{
	if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
	goto err;
	if (BIO_puts(bp, " with ") <= 0)
	goto err;
	if (maskHash)
	{
	if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
	goto err;
	}
	else if (BIO_puts(bp, "INVALID") <= 0)
	goto err;
	}
	else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
	goto err;
	BIO_puts(bp, "\n");

	if (!BIO_indent(bp, indent, 128))
	goto err;
	if (BIO_puts(bp, "Salt Length: ") <= 0)
	goto err;
	if (pss->saltLength)
	{
	if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
	goto err;
	}
	else if (BIO_puts(bp, "20 (default)") <= 0)
	goto err;
	BIO_puts(bp, "\n");

	if (!BIO_indent(bp, indent, 128))
	goto err;
	if (BIO_puts(bp, "Trailer Field: ") <= 0)
	goto err;
	if (pss->trailerField)
	{
	if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
	goto err;
	}
	else if (BIO_puts(bp, "0xbc (default)") <= 0)
	goto err;
	BIO_puts(bp, "\n");

	rv = 1;

	err:
	return rv;

	}

	static int rsa_sig_print(BIO bp, const X509_ALGOR sigalg,
	const ASN1_STRING *sig,
	int indent, ASN1_PCTX *pctx)
	{
	if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss)
	{
	int rv;
	RSA_PSS_PARAMS *pss;
	X509_ALGOR *maskHash;
	pss = rsa_pss_decode(sigalg, &maskHash);
	rv = rsa_pss_param_print(bp, pss, maskHash, indent);
	if (pss)
	RSA_PSS_PARAMS_free(pss);
	if (maskHash)
	X509_ALGOR_free(maskHash);
	if (!rv)
	return 0;
	}
	else if (!sig && BIO_puts(bp, "\n") <= 0)
	return 0;
	if (sig)
	return X509_signature_dump(bp, sig, indent);
	return 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;

	}

	/* Customised RSA item verification routine. This is called
	* when a signature is encountered requiring special handling. We
	* currently only handle PSS.
	*/


	static int rsa_item_verify(EVP_MD_CTX ctx, const ASN1_ITEM it, void *asn,
	X509_ALGOR sigalg, ASN1_BIT_STRING sig,
	EVP_PKEY *pkey)
	{
	int rv = -1;
	int saltlen;
	const EVP_MD mgf1md = NULL, md = NULL;
	RSA_PSS_PARAMS *pss;
	X509_ALGOR *maskHash;
	EVP_PKEY_CTX *pkctx;
	/* Sanity check: make sure it is PSS */
	if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
	return -1;
	}
	/* Decode PSS parameters */
	pss = rsa_pss_decode(sigalg, &maskHash);

	if (pss == NULL)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS);
	goto err;
	}
	/* Check mask and lookup mask hash algorithm */
	if (pss->maskGenAlgorithm)
	{
	if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_ALGORITHM);
	goto err;
	}
	if (!maskHash)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_PARAMETER);
	goto err;
	}
	mgf1md = EVP_get_digestbyobj(maskHash->algorithm);
	if (mgf1md == NULL)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_MASK_DIGEST);
	goto err;
	}
	}
	else
	mgf1md = EVP_sha1();

	if (pss->hashAlgorithm)
	{
	md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm);
	if (md == NULL)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST);
	goto err;
	}
	}
	else
	md = EVP_sha1();

	if (pss->saltLength)
	{
	saltlen = ASN1_INTEGER_get(pss->saltLength);

	/* Could perform more salt length sanity checks but the main
	* RSA routines will trap other invalid values anyway.
	*/
	if (saltlen < 0)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_SALT_LENGTH);
	goto err;
	}
	}
	else
	saltlen = 20;

	/* low-level routines support only trailer field 0xbc (value 1)
	* and PKCS#1 says we should reject any other value anyway.
	*/
	if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1)
	{
	RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER);
	goto err;
	}

	/* We have all parameters now set up context */

	if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
	goto err;

	if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
	goto err;

	if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
	goto err;

	if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
	goto err;
	/* Carry on */
	rv = 2;

	err:
	RSA_PSS_PARAMS_free(pss);
	if (maskHash)
	X509_ALGOR_free(maskHash);
	return rv;
	}

	static int rsa_item_sign(EVP_MD_CTX ctx, const ASN1_ITEM it, void *asn,
	X509_ALGOR alg1, X509_ALGOR alg2,
	ASN1_BIT_STRING *sig)
	{
	int pad_mode;
	EVP_PKEY_CTX *pkctx = ctx->pctx;
	if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
	return 0;
	if (pad_mode == RSA_PKCS1_PADDING)
	return 2;
	if (pad_mode == RSA_PKCS1_PSS_PADDING)
	{
	const EVP_MD sigmd, mgf1md;
	RSA_PSS_PARAMS *pss = NULL;
	X509_ALGOR *mgf1alg = NULL;
	ASN1_STRING os1 = NULL, os2 = NULL;
	EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
	int saltlen, rv = 0;
	sigmd = EVP_MD_CTX_md(ctx);
	if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
	goto err;
	if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
	goto err;
	if (saltlen == -1)
	saltlen = EVP_MD_size(sigmd);
	else if (saltlen == -2)
	{
	saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
	if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0)
	saltlen--;
	}
	pss = RSA_PSS_PARAMS_new();
	if (!pss)
	goto err;
	if (saltlen != 20)
	{
	pss->saltLength = ASN1_INTEGER_new();
	if (!pss->saltLength)
	goto err;
	if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
	goto err;
	}
	if (EVP_MD_type(sigmd) != NID_sha1)
	{
	pss->hashAlgorithm = X509_ALGOR_new();
	if (!pss->hashAlgorithm)
	goto err;
	X509_ALGOR_set_md(pss->hashAlgorithm, sigmd);
	}
	if (EVP_MD_type(mgf1md) != NID_sha1)
	{
	ASN1_STRING *stmp = NULL;
	/* need to embed algorithm ID inside another */
	mgf1alg = X509_ALGOR_new();
	X509_ALGOR_set_md(mgf1alg, mgf1md);
	if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR),
	&stmp))
	goto err;
	pss->maskGenAlgorithm = X509_ALGOR_new();
	if (!pss->maskGenAlgorithm)
	goto err;
	X509_ALGOR_set0(pss->maskGenAlgorithm,
	OBJ_nid2obj(NID_mgf1),
	V_ASN1_SEQUENCE, stmp);
	}
	/* Finally create string with pss parameter encoding. */
	if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1))
	goto err;
	if (alg2)
	{
	os2 = ASN1_STRING_dup(os1);
	if (!os2)
	goto err;
	X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss),
	V_ASN1_SEQUENCE, os2);
	}
	X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss),
	V_ASN1_SEQUENCE, os1);
	os1 = os2 = NULL;
	rv = 3;
	err:
	if (mgf1alg)
	X509_ALGOR_free(mgf1alg);
	if (pss)
	RSA_PSS_PARAMS_free(pss);
	if (os1)
	ASN1_STRING_free(os1);
	return rv;

	}
	return 2;
	}

	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,

	rsa_sig_print,
	int_rsa_free,
	rsa_pkey_ctrl,
	old_rsa_priv_decode,
	old_rsa_priv_encode,
	rsa_item_verify,
	rsa_item_sign
	},

	{
	EVP_PKEY_RSA2,
	EVP_PKEY_RSA,
	ASN1_PKEY_ALIAS
	}
	};