fa1ba589f3
now print out signatures instead of the standard hex dump. More complex signatures (e.g. PSS) can print out more meaningful information. Sample DSA version included that prints out the signature parameters r, s. [Note EVP_PKEY_ASN1_METHOD is an application opaque structure so adding new fields in the middle has no compatibility issues]
350 lines
8.3 KiB
C
350 lines
8.3 KiB
C
/* crypto/rsa/rsa_ameth.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) 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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0,0,0,0,0,0,0,
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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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