/* crypto/pem/pem_pkey.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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 acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/pkcs12.h>
#include <openssl/pem.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#include "asn1_locl.h"
int pem_check_suffix(const char *pem_str, const char *suffix);
EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
{
char *nm=NULL;
const unsigned char *p=NULL;
unsigned char *data=NULL;
long len;
int slen;
EVP_PKEY *ret=NULL;
if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
return NULL;
p = data;
if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
PKCS8_PRIV_KEY_INFO *p8inf;
p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
if(!p8inf) goto p8err;
ret = EVP_PKCS82PKEY(p8inf);
if(x) {
if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
*x = ret;
}
PKCS8_PRIV_KEY_INFO_free(p8inf);
} else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
PKCS8_PRIV_KEY_INFO *p8inf;
X509_SIG *p8;
int klen;
char psbuf[PEM_BUFSIZE];
p8 = d2i_X509_SIG(NULL, &p, len);
if(!p8) goto p8err;
if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
if (klen <= 0) {
PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,
PEM_R_BAD_PASSWORD_READ);
X509_SIG_free(p8);
goto err;
}
p8inf = PKCS8_decrypt(p8, psbuf, klen);
X509_SIG_free(p8);
if(!p8inf) goto p8err;
ret = EVP_PKCS82PKEY(p8inf);
if(x) {
if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
*x = ret;
}
PKCS8_PRIV_KEY_INFO_free(p8inf);
} else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0)
{
const EVP_PKEY_ASN1_METHOD *ameth;
ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
if (!ameth || !ameth->old_priv_decode)
goto p8err;
ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len);
}
p8err:
if (ret == NULL)
PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB);
err:
OPENSSL_free(nm);
OPENSSL_cleanse(data, len);
OPENSSL_free(data);
return(ret);
}
int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
unsigned char *kstr, int klen,
pem_password_cb *cb, void *u)
{
char pem_str[80];
if (!x->ameth || x->ameth->priv_encode)
return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
(char *)kstr, klen,
cb, u);
BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
pem_str,bp,x,enc,kstr,klen,cb,u);
}
EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
{
char *nm=NULL;
const unsigned char *p=NULL;
unsigned char *data=NULL;
long len;
int slen;
EVP_PKEY *ret=NULL;
if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
bp, 0, NULL))
return NULL;
p = data;
if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
{
ret = EVP_PKEY_new();
if (!ret)
goto err;
if (!EVP_PKEY_set_type_str(ret, nm, slen)
|| !ret->ameth->param_decode
|| !ret->ameth->param_decode(ret, &p, len))
{
EVP_PKEY_free(ret);
ret = NULL;
goto err;
}
if(x)
{
if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
*x = ret;
}
}
err:
if (ret == NULL)
PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS,ERR_R_ASN1_LIB);
OPENSSL_free(nm);
OPENSSL_free(data);
return(ret);
}
int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
{
char pem_str[80];
if (!x->ameth || !x->ameth->param_encode)
return 0;
BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
return PEM_ASN1_write_bio(
(i2d_of_void *)x->ameth->param_encode,
pem_str,bp,x,NULL,NULL,0,0,NULL);
}
#ifndef OPENSSL_NO_FP_API
EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
{
BIO *b;
EVP_PKEY *ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
PEMerr(PEM_F_PEM_READ_PRIVATEKEY,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=PEM_read_bio_PrivateKey(b,x,cb,u);
BIO_free(b);
return(ret);
}
int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
unsigned char *kstr, int klen,
pem_password_cb *cb, void *u)
{
BIO *b;
int ret;
if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
{
PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY,ERR_R_BUF_LIB);
return 0;
}
ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
BIO_free(b);
return ret;
}
#endif