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/* $OpenBSD: pem_pk8.c,v 1.13 2017/01/29 17:49:23 beck Exp $ */ |
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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 <string.h> |
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#include <openssl/buffer.h> |
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#include <openssl/err.h> |
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#include <openssl/evp.h> |
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#include <openssl/objects.h> |
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#include <openssl/pem.h> |
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#include <openssl/pkcs12.h> |
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#include <openssl/x509.h> |
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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, pem_password_cb *cb, void *u); |
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static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, int nid, |
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const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u); |
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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 |
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PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr, |
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int klen, 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 |
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PEM_write_bio_PKCS8PrivateKey(BIO *bp, 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(bp, x, 0, -1, enc, kstr, klen, cb, u); |
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} |
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int |
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i2d_PKCS8PrivateKey_bio(BIO *bp, 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(bp, x, 1, -1, enc, kstr, klen, cb, u); |
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} |
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int |
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i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, |
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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(bp, x, 1, nid, NULL, kstr, klen, cb, u); |
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} |
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static int |
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do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, 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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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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✗✓ |
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if (!(p8inf = EVP_PKEY2PKCS8(x))) { |
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PEMerror(PEM_R_ERROR_CONVERTING_PRIVATE_KEY); |
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return 0; |
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} |
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✓✓ |
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if (enc || (nid != -1)) { |
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✓✗ |
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if (!kstr) { |
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✓✗ |
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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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✗✓ |
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if (klen <= 0) { |
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PEMerror(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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✓✗ |
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if (kstr == buf) |
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explicit_bzero(buf, klen); |
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PKCS8_PRIV_KEY_INFO_free(p8inf); |
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✗✓ |
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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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✗✓ |
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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 * |
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d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, 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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PEMerror(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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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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int |
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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 |
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i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr, |
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int klen, 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 |
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PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr, |
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int klen, 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 |
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PEM_write_PKCS8PrivateKey(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, 0, -1, enc, kstr, klen, cb, u); |
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} |
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static int |
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do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, 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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BIO *bp; |
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int ret; |
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if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { |
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PEMerror(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 * |
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d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, 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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PEMerror(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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X509_SIG * |
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PEM_read_PKCS8(FILE *fp, X509_SIG **x, pem_password_cb *cb, void *u) |
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{ |
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return PEM_ASN1_read((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, fp, |
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(void **)x, cb, u); |
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} |
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int |
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PEM_write_PKCS8(FILE *fp, X509_SIG *x) |
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{ |
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return PEM_ASN1_write((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, fp, |
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x, NULL, NULL, 0, NULL, NULL); |
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} |
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X509_SIG * |
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PEM_read_bio_PKCS8(BIO *bp, X509_SIG **x, pem_password_cb *cb, void *u) |
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{ |
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return PEM_ASN1_read_bio((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, bp, |
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(void **)x, cb, u); |
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} |
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int |
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PEM_write_bio_PKCS8(BIO *bp, X509_SIG *x) |
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{ |
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return PEM_ASN1_write_bio((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, bp, |
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x, NULL, NULL, 0, NULL, NULL); |
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} |
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PKCS8_PRIV_KEY_INFO * |
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PEM_read_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u) |
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{ |
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return PEM_ASN1_read((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp, |
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(void **)x, cb, u); |
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} |
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int |
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PEM_write_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO *x) |
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{ |
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return PEM_ASN1_write((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp, |
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x, NULL, NULL, 0, NULL, NULL); |
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} |
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PKCS8_PRIV_KEY_INFO * |
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PEM_read_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u) |
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{ |
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return PEM_ASN1_read_bio((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp, |
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(void **)x, cb, u); |
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} |
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int |
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PEM_write_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO *x) |
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{ |
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return PEM_ASN1_write_bio((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp, |
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x, NULL, NULL, 0, NULL, NULL); |
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} |