ref: 2cdc6577ef8a251bf1740439cf5bfc47050dab41
dir: /third_party/boringssl/src/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 <openssl/pem.h>
#include <stdio.h>
#include <string.h>
#include <openssl/dh.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/pkcs8.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
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;
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;
klen = 0;
if (!cb)
cb = PEM_def_callback;
klen = cb(psbuf, PEM_BUFSIZE, 0, u);
if (klen <= 0) {
OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
X509_SIG_free(p8);
goto err;
}
p8inf = PKCS8_decrypt(p8, psbuf, klen);
X509_SIG_free(p8);
OPENSSL_cleanse(psbuf, klen);
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_RSA) == 0) {
/* TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the
* standalone format. This and the cases below probably should not
* accept PKCS#8. */
ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len);
} else if (strcmp(nm, PEM_STRING_EC) == 0) {
ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len);
} else if (strcmp(nm, PEM_STRING_DSA) == 0) {
ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len);
}
p8err:
if (ret == NULL)
OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
err:
OPENSSL_free(nm);
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)
{
return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (char *)kstr, klen, cb, u);
}
EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
void *u)
{
BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
if (b == NULL) {
OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
return NULL;
}
EVP_PKEY *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 = BIO_new_fp(fp, BIO_NOCLOSE);
if (b == NULL) {
OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
return 0;
}
int ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
BIO_free(b);
return ret;
}
/* Transparently read in PKCS#3 or X9.42 DH parameters */
DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
{
char *nm = NULL;
const unsigned char *p = NULL;
unsigned char *data = NULL;
long len;
DH *ret = NULL;
if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
return NULL;
p = data;
ret = d2i_DHparams(x, &p, len);
if (ret == NULL)
OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
OPENSSL_free(nm);
OPENSSL_free(data);
return ret;
}
DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
{
BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
if (b == NULL) {
OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
return NULL;
}
DH *ret = PEM_read_bio_DHparams(b, x, cb, u);
BIO_free(b);
return ret;
}