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/* 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>
static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
int nid, const EVP_CIPHER *enc,
char *kstr, int klen, pem_password_cb *cb, void *u);
static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
int nid, const EVP_CIPHER *enc,
char *kstr, int klen, pem_password_cb *cb, void *u);
/*
* These functions write a private key in PKCS#8 format: it is a "drop in"
* replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
* is NULL then it uses the unencrypted private key form. The 'nid' versions
* uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
*/
int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
}
int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
}
int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
}
int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
}
static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
const EVP_CIPHER *enc, char *kstr, int klen,
pem_password_cb *cb, void *u)
{
X509_SIG *p8;
PKCS8_PRIV_KEY_INFO *p8inf;
char buf[PEM_BUFSIZE];
int ret;
if (!(p8inf = EVP_PKEY2PKCS8(x))) {
PEMerr(PEM_F_DO_PK8PKEY, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
return 0;
}
if (enc || (nid != -1)) {
if (!kstr) {
if (!cb)
klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
else
klen = cb(buf, PEM_BUFSIZE, 1, u);
if (klen <= 0) {
PEMerr(PEM_F_DO_PK8PKEY, PEM_R_READ_KEY);
PKCS8_PRIV_KEY_INFO_free(p8inf);
return 0;
}
kstr = buf;
}
p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
if (kstr == buf)
OPENSSL_cleanse(buf, klen);
PKCS8_PRIV_KEY_INFO_free(p8inf);
if (isder)
ret = i2d_PKCS8_bio(bp, p8);
else
ret = PEM_write_bio_PKCS8(bp, p8);
X509_SIG_free(p8);
return ret;
} else {
if (isder)
ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
else
ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
PKCS8_PRIV_KEY_INFO_free(p8inf);
return ret;
}
}
EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
void *u)
{
PKCS8_PRIV_KEY_INFO *p8inf = NULL;
X509_SIG *p8 = NULL;
int klen;
EVP_PKEY *ret;
char psbuf[PEM_BUFSIZE];
p8 = d2i_PKCS8_bio(bp, NULL);
if (!p8)
return NULL;
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_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
X509_SIG_free(p8);
return NULL;
}
p8inf = PKCS8_decrypt(p8, psbuf, klen);
X509_SIG_free(p8);
if (!p8inf)
return NULL;
ret = EVP_PKCS82PKEY(p8inf);
PKCS8_PRIV_KEY_INFO_free(p8inf);
if (!ret)
return NULL;
if (x) {
if (*x)
EVP_PKEY_free(*x);
*x = ret;
}
return ret;
}
#ifndef OPENSSL_NO_FP_API
int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
char *kstr, int klen, pem_password_cb *cb, void *u)
{
return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
}
int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
}
int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
}
int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
char *kstr, int klen, pem_password_cb *cb,
void *u)
{
return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
}
static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid,
const EVP_CIPHER *enc, char *kstr, int klen,
pem_password_cb *cb, void *u)
{
BIO *bp;
int ret;
if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
PEMerr(PEM_F_DO_PK8PKEY_FP, ERR_R_BUF_LIB);
return (0);
}
ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
BIO_free(bp);
return ret;
}
EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
void *u)
{
BIO *bp;
EVP_PKEY *ret;
if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP, ERR_R_BUF_LIB);
return NULL;
}
ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
BIO_free(bp);
return ret;
}
#endif
IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
PKCS8_PRIV_KEY_INFO)
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