243 lines
7.6 KiB
C
243 lines
7.6 KiB
C
/* crypto/pem/pem_pkey.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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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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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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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 the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/buffer.h>
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include <openssl/rand.h>
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#include <openssl/x509.h>
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#include <openssl/pkcs12.h>
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#include <openssl/pem.h>
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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h>
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#endif
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#include "asn1_locl.h"
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int pem_check_suffix(const char *pem_str, const char *suffix);
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EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
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char *nm=NULL;
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const unsigned char *p=NULL;
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unsigned char *data=NULL;
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long len;
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int slen;
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EVP_PKEY *ret=NULL;
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if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
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return NULL;
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p = data;
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if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
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PKCS8_PRIV_KEY_INFO *p8inf;
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p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
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if(!p8inf) goto p8err;
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ret = EVP_PKCS82PKEY(p8inf);
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if(x) {
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if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
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*x = ret;
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}
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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} else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
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PKCS8_PRIV_KEY_INFO *p8inf;
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X509_SIG *p8;
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int klen;
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char psbuf[PEM_BUFSIZE];
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p8 = d2i_X509_SIG(NULL, &p, len);
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if(!p8) goto p8err;
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if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
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else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
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if (klen <= 0) {
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PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,
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PEM_R_BAD_PASSWORD_READ);
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X509_SIG_free(p8);
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goto err;
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}
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p8inf = PKCS8_decrypt(p8, psbuf, klen);
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X509_SIG_free(p8);
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if(!p8inf) goto p8err;
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ret = EVP_PKCS82PKEY(p8inf);
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if(x) {
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if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
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*x = ret;
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}
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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} else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0)
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{
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const EVP_PKEY_ASN1_METHOD *ameth;
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ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
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if (!ameth || !ameth->old_priv_decode)
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goto p8err;
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ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len);
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}
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p8err:
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if (ret == NULL)
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PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB);
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err:
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OPENSSL_free(nm);
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OPENSSL_cleanse(data, len);
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OPENSSL_free(data);
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return(ret);
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}
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int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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unsigned char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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char pem_str[80];
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if (!x->ameth || x->ameth->priv_encode)
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return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
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(char *)kstr, klen,
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cb, u);
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BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
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return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
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pem_str,bp,x,enc,kstr,klen,cb,u);
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}
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EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
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{
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char *nm=NULL;
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const unsigned char *p=NULL;
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unsigned char *data=NULL;
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long len;
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int slen;
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EVP_PKEY *ret=NULL;
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if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
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bp, 0, NULL))
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return NULL;
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p = data;
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if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
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{
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ret = EVP_PKEY_new();
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if (!ret)
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goto err;
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if (!EVP_PKEY_set_type_str(ret, nm, slen)
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|| !ret->ameth->param_decode
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|| !ret->ameth->param_decode(ret, &p, len))
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{
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EVP_PKEY_free(ret);
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ret = NULL;
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goto err;
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}
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if(x)
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{
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if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
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*x = ret;
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}
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}
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err:
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if (ret == NULL)
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PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS,ERR_R_ASN1_LIB);
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OPENSSL_free(nm);
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OPENSSL_free(data);
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return(ret);
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}
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int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
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{
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char pem_str[80];
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if (!x->ameth || !x->ameth->param_encode)
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return 0;
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BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
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return PEM_ASN1_write_bio(
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(i2d_of_void *)x->ameth->param_encode,
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pem_str,bp,x,NULL,NULL,0,0,NULL);
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}
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#ifndef OPENSSL_NO_FP_API
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EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
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BIO *b;
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EVP_PKEY *ret;
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if ((b=BIO_new(BIO_s_file())) == NULL)
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{
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PEMerr(PEM_F_PEM_READ_PRIVATEKEY,ERR_R_BUF_LIB);
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return(0);
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}
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BIO_set_fp(b,fp,BIO_NOCLOSE);
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ret=PEM_read_bio_PrivateKey(b,x,cb,u);
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BIO_free(b);
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return(ret);
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}
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int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
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unsigned char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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BIO *b;
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int ret;
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if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
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{
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PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY,ERR_R_BUF_LIB);
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return 0;
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}
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ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
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BIO_free(b);
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return ret;
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}
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#endif
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