257 lines
9.2 KiB
C
257 lines
9.2 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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static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
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int nid, const EVP_CIPHER *enc,
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char *kstr, int klen, pem_password_cb *cb, void *u);
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static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
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int nid, const EVP_CIPHER *enc,
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char *kstr, int klen, pem_password_cb *cb, void *u);
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/*
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* These functions write a private key in PKCS#8 format: it is a "drop in"
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* replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
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* is NULL then it uses the unencrypted private key form. The 'nid' versions
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* uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
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*/
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int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
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}
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int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
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}
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int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
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}
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int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
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}
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static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
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const EVP_CIPHER *enc, char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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X509_SIG *p8;
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PKCS8_PRIV_KEY_INFO *p8inf;
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char buf[PEM_BUFSIZE];
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int ret;
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if (!(p8inf = EVP_PKEY2PKCS8(x))) {
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PEMerr(PEM_F_DO_PK8PKEY, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
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return 0;
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}
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if (enc || (nid != -1)) {
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if (!kstr) {
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if (!cb)
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klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
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else
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klen = cb(buf, PEM_BUFSIZE, 1, u);
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if (klen <= 0) {
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PEMerr(PEM_F_DO_PK8PKEY, PEM_R_READ_KEY);
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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return 0;
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}
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kstr = buf;
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}
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p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
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if (kstr == buf)
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OPENSSL_cleanse(buf, klen);
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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if (isder)
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ret = i2d_PKCS8_bio(bp, p8);
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else
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ret = PEM_write_bio_PKCS8(bp, p8);
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X509_SIG_free(p8);
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return ret;
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} else {
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if (isder)
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ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
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else
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ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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return ret;
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}
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}
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EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
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void *u)
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{
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PKCS8_PRIV_KEY_INFO *p8inf = NULL;
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X509_SIG *p8 = NULL;
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int klen;
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EVP_PKEY *ret;
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char psbuf[PEM_BUFSIZE];
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p8 = d2i_PKCS8_bio(bp, NULL);
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if (!p8)
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return NULL;
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if (cb)
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klen = cb(psbuf, PEM_BUFSIZE, 0, u);
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else
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klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
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if (klen <= 0) {
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PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
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X509_SIG_free(p8);
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return NULL;
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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)
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return NULL;
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ret = EVP_PKCS82PKEY(p8inf);
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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if (!ret)
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return NULL;
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if (x) {
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if (*x)
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EVP_PKEY_free(*x);
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*x = ret;
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}
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return ret;
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}
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#ifndef OPENSSL_NO_FP_API
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int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
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char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
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}
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int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
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}
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int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
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char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
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}
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int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
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char *kstr, int klen, pem_password_cb *cb,
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void *u)
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{
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return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
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}
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static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid,
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const EVP_CIPHER *enc, char *kstr, int klen,
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pem_password_cb *cb, void *u)
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{
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BIO *bp;
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int ret;
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if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
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PEMerr(PEM_F_DO_PK8PKEY_FP, ERR_R_BUF_LIB);
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return (0);
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}
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ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
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BIO_free(bp);
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return ret;
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}
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EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
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void *u)
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{
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BIO *bp;
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EVP_PKEY *ret;
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if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
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PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP, ERR_R_BUF_LIB);
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return NULL;
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}
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ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
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BIO_free(bp);
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return ret;
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}
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#endif
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IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
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IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
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PKCS8_PRIV_KEY_INFO)
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