349 lines
8.3 KiB
C
349 lines
8.3 KiB
C
/* crypto/rsa/rsa_ameth.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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#include <openssl/rsa.h>
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#include <openssl/bn.h>
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#ifndef OPENSSL_NO_CMS
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#include <openssl/cms.h>
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#endif
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#include "asn1_locl.h"
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static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
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{
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unsigned char *penc = NULL;
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int penclen;
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penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
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if (penclen <= 0)
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return 0;
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if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
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V_ASN1_NULL, NULL, penc, penclen))
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return 1;
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OPENSSL_free(penc);
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return 0;
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}
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static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
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{
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const unsigned char *p;
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int pklen;
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RSA *rsa = NULL;
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if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
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return 0;
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if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen)))
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{
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RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
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return 0;
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}
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EVP_PKEY_assign_RSA (pkey, 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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{
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if (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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return 0;
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return 1;
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}
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static int old_rsa_priv_decode(EVP_PKEY *pkey,
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const unsigned char **pder, int derlen)
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{
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RSA *rsa;
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if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen)))
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{
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RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
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return 0;
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}
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EVP_PKEY_assign_RSA(pkey, rsa);
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return 1;
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}
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static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
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{
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return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
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}
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static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
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{
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unsigned char *rk = NULL;
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int rklen;
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rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
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if (rklen <= 0)
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{
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RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0,
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V_ASN1_NULL, NULL, rk, rklen))
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{
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RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
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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 *pkey, PKCS8_PRIV_KEY_INFO *p8)
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{
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const unsigned char *p;
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int pklen;
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if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
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return 0;
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return old_rsa_priv_decode(pkey, &p, pklen);
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}
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static int int_rsa_size(const EVP_PKEY *pkey)
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{
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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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{
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return BN_num_bits(pkey->pkey.rsa->n);
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}
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static void int_rsa_free(EVP_PKEY *pkey)
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{
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RSA_free(pkey->pkey.rsa);
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}
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static void update_buflen(const BIGNUM *b, size_t *pbuflen)
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{
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size_t i;
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if (!b)
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return;
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if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
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*pbuflen = i;
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}
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static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
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{
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char *str;
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const char *s;
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unsigned char *m=NULL;
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int ret=0, mod_len = 0;
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size_t buf_len=0;
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update_buflen(x->n, &buf_len);
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update_buflen(x->e, &buf_len);
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if (priv)
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{
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update_buflen(x->d, &buf_len);
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update_buflen(x->p, &buf_len);
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update_buflen(x->q, &buf_len);
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update_buflen(x->dmp1, &buf_len);
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update_buflen(x->dmq1, &buf_len);
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update_buflen(x->iqmp, &buf_len);
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}
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m=(unsigned char *)OPENSSL_malloc(buf_len+10);
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if (m == NULL)
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{
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RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (x->n != NULL)
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mod_len = BN_num_bits(x->n);
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if(!BIO_indent(bp,off,128))
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goto err;
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if (priv && x->d)
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{
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if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
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<= 0) goto err;
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str = "modulus:";
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s = "publicExponent:";
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}
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else
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{
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if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
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<= 0) goto err;
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str = "Modulus:";
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s= "Exponent:";
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}
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if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
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if (!ASN1_bn_print(bp,s,x->e,m,off))
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goto err;
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if (priv)
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{
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if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
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goto err;
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if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
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goto err;
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if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
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goto err;
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if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
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goto err;
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if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
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goto err;
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if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
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goto err;
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}
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ret=1;
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err:
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if (m != NULL) OPENSSL_free(m);
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return(ret);
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}
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static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
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}
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static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
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}
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static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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X509_ALGOR *alg = NULL;
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switch (op)
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{
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case ASN1_PKEY_CTRL_PKCS7_SIGN:
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if (arg1 == 0)
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PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
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break;
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case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
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if (arg1 == 0)
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PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
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break;
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#ifndef OPENSSL_NO_CMS
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case ASN1_PKEY_CTRL_CMS_SIGN:
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if (arg1 == 0)
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CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg);
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break;
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case ASN1_PKEY_CTRL_CMS_ENVELOPE:
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if (arg1 == 0)
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CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg);
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break;
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#endif
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case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
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*(int *)arg2 = NID_sha1;
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return 1;
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default:
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return -2;
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}
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if (alg)
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X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption),
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V_ASN1_NULL, 0);
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return 1;
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}
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const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] =
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{
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{
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EVP_PKEY_RSA,
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EVP_PKEY_RSA,
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ASN1_PKEY_SIGPARAM_NULL,
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"RSA",
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"OpenSSL RSA method",
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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_pub_print,
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rsa_priv_decode,
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rsa_priv_encode,
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rsa_priv_print,
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int_rsa_size,
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rsa_bits,
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0,0,0,0,0,0,
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int_rsa_free,
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rsa_pkey_ctrl,
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old_rsa_priv_decode,
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old_rsa_priv_encode
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},
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{
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EVP_PKEY_RSA2,
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EVP_PKEY_RSA,
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ASN1_PKEY_ALIAS
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}
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};
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