/* $OpenBSD: a_pkey.c,v 1.9 2025/05/10 05:54:38 tb Exp $ */ /* 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 <openssl/opensslconf.h> #include <openssl/asn1.h> #include <openssl/bn.h> #include <openssl/evp.h> #include <openssl/objects.h> #include <openssl/x509.h> #include "asn1_local.h" #include "err_local.h" #include "evp_local.h" EVP_PKEY * d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp, long length) { const unsigned char *p = *pp; EVP_PKEY *ret; if ((a == NULL) || (*a == NULL)) { if ((ret = EVP_PKEY_new()) == NULL) { ASN1error(ERR_R_EVP_LIB); return (NULL); } } else { ret = *a; } if (!EVP_PKEY_set_type(ret, type)) { ASN1error(ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE); goto err; } if (!ret->ameth->old_priv_decode || !ret->ameth->old_priv_decode(ret, pp, length)) { if (ret->ameth->priv_decode) { PKCS8_PRIV_KEY_INFO *p8 = NULL; *pp = p; /* XXX */ p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, pp, length); if (!p8) goto err; EVP_PKEY_free(ret); ret = EVP_PKCS82PKEY(p8); PKCS8_PRIV_KEY_INFO_free(p8); } else { ASN1error(ERR_R_ASN1_LIB); goto err; } } if (a != NULL) (*a) = ret; return (ret); err: if (a == NULL || *a != ret) EVP_PKEY_free(ret); return (NULL); } LCRYPTO_ALIAS(d2i_PrivateKey); int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp) { if (a->ameth && a->ameth->old_priv_encode) { return a->ameth->old_priv_encode(a, pp); } if (a->ameth && a->ameth->priv_encode) { PKCS8_PRIV_KEY_INFO *p8 = EVP_PKEY2PKCS8(a); int ret = i2d_PKCS8_PRIV_KEY_INFO(p8, pp); PKCS8_PRIV_KEY_INFO_free(p8); return ret; } ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE); return (-1); } LCRYPTO_ALIAS(i2d_PrivateKey); /* This works like d2i_PrivateKey() except it automatically works out the type */ EVP_PKEY * d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp, long length) { STACK_OF(ASN1_TYPE) *inkey; const unsigned char *p; int keytype; p = *pp; /* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): * by analyzing it we can determine the passed structure: this * assumes the input is surrounded by an ASN1 SEQUENCE. */ inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length); /* Since we only need to discern "traditional format" RSA and DSA * keys we can just count the elements. */ if (sk_ASN1_TYPE_num(inkey) == 6) keytype = EVP_PKEY_DSA; else if (sk_ASN1_TYPE_num(inkey) == 4) keytype = EVP_PKEY_EC; else if (sk_ASN1_TYPE_num(inkey) == 3) { /* This seems to be PKCS8, not traditional format */ PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO( NULL, pp, length); EVP_PKEY *ret; sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); if (!p8) { ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE); return NULL; } ret = EVP_PKCS82PKEY(p8); PKCS8_PRIV_KEY_INFO_free(p8); if (a) { *a = ret; } return ret; } else keytype = EVP_PKEY_RSA; sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); return d2i_PrivateKey(keytype, a, pp, length); } LCRYPTO_ALIAS(d2i_AutoPrivateKey);
