mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
48fe0eec67
broken formats worked but the valid didn't :-(
408 lines
11 KiB
C
408 lines
11 KiB
C
/* evp_pkey.c */
|
|
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
|
|
* project 1999.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* 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 above 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 acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED 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 OpenSSL PROJECT OR
|
|
* ITS 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.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/x509.h>
|
|
#include <openssl/rand.h>
|
|
|
|
static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
|
|
|
|
/* Extract a private key from a PKCS8 structure */
|
|
|
|
EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
|
|
{
|
|
EVP_PKEY *pkey = NULL;
|
|
#ifndef NO_RSA
|
|
RSA *rsa = NULL;
|
|
#endif
|
|
#ifndef NO_DSA
|
|
DSA *dsa = NULL;
|
|
ASN1_INTEGER *privkey;
|
|
ASN1_TYPE *t1, *t2, *param = NULL;
|
|
STACK *ndsa = NULL;
|
|
BN_CTX *ctx = NULL;
|
|
int plen;
|
|
#endif
|
|
X509_ALGOR *a;
|
|
unsigned char *p;
|
|
int pkeylen;
|
|
char obj_tmp[80];
|
|
|
|
if(p8->pkey->type == V_ASN1_OCTET_STRING) {
|
|
p8->broken = PKCS8_OK;
|
|
p = p8->pkey->value.octet_string->data;
|
|
pkeylen = p8->pkey->value.octet_string->length;
|
|
} else {
|
|
p8->broken = PKCS8_NO_OCTET;
|
|
p = p8->pkey->value.sequence->data;
|
|
pkeylen = p8->pkey->value.sequence->length;
|
|
}
|
|
if (!(pkey = EVP_PKEY_new())) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
a = p8->pkeyalg;
|
|
switch (OBJ_obj2nid(a->algorithm))
|
|
{
|
|
#ifndef NO_RSA
|
|
case NID_rsaEncryption:
|
|
if (!(rsa = d2i_RSAPrivateKey (NULL, &p, pkeylen))) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
return NULL;
|
|
}
|
|
EVP_PKEY_assign_RSA (pkey, rsa);
|
|
break;
|
|
#endif
|
|
#ifndef NO_DSA
|
|
case NID_dsa:
|
|
/* PKCS#8 DSA is weird: you just get a private key integer
|
|
* and parameters in the AlgorithmIdentifier the pubkey must
|
|
* be recalculated.
|
|
*/
|
|
|
|
/* Check for broken DSA PKCS#8, UGH! */
|
|
if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
|
|
if(!(ndsa = ASN1_seq_unpack(p, pkeylen,
|
|
(char *(*)())d2i_ASN1_TYPE,
|
|
ASN1_TYPE_free))) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
if(sk_num(ndsa) != 2 ) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
/* Handle Two broken types:
|
|
* SEQUENCE {parameters, priv_key}
|
|
* SEQUENCE {pub_key, priv_key}
|
|
*/
|
|
|
|
t1 = (ASN1_TYPE *)sk_value(ndsa, 0);
|
|
t2 = (ASN1_TYPE *)sk_value(ndsa, 1);
|
|
if(t1->type == V_ASN1_SEQUENCE) {
|
|
p8->broken = PKCS8_EMBEDDED_PARAM;
|
|
param = t1;
|
|
} else if(a->parameter->type == V_ASN1_SEQUENCE) {
|
|
p8->broken = PKCS8_NS_DB;
|
|
param = a->parameter;
|
|
} else {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
|
|
if(t2->type != V_ASN1_INTEGER) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
privkey = t2->value.integer;
|
|
} else {
|
|
if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
param = p8->pkeyalg->parameter;
|
|
}
|
|
if (!param || (param->type != V_ASN1_SEQUENCE)) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
p = param->value.sequence->data;
|
|
plen = param->value.sequence->length;
|
|
if (!(dsa = d2i_DSAparams (NULL, &p, plen))) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
/* We have parameters now set private key */
|
|
if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
/* Calculate public key (ouch!) */
|
|
if (!(dsa->pub_key = BN_new())) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
|
|
goto dsaerr;
|
|
}
|
|
if (!(ctx = BN_CTX_new())) {
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
|
|
goto dsaerr;
|
|
}
|
|
|
|
if (!BN_mod_exp(dsa->pub_key, dsa->g,
|
|
dsa->priv_key, dsa->p, ctx)) {
|
|
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
|
|
goto dsaerr;
|
|
}
|
|
|
|
EVP_PKEY_assign_DSA(pkey, dsa);
|
|
BN_CTX_free (ctx);
|
|
if(ndsa) sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
else ASN1_INTEGER_free(privkey);
|
|
break;
|
|
dsaerr:
|
|
BN_CTX_free (ctx);
|
|
sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
DSA_free(dsa);
|
|
EVP_PKEY_free(pkey);
|
|
return NULL;
|
|
break;
|
|
#endif
|
|
default:
|
|
EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
|
|
if (!a->algorithm) strcpy (obj_tmp, "NULL");
|
|
else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
|
|
ERR_add_error_data(2, "TYPE=", obj_tmp);
|
|
EVP_PKEY_free (pkey);
|
|
return NULL;
|
|
}
|
|
return pkey;
|
|
}
|
|
|
|
PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
|
|
{
|
|
return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
|
|
}
|
|
|
|
/* Turn a private key into a PKCS8 structure */
|
|
|
|
PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
|
|
{
|
|
PKCS8_PRIV_KEY_INFO *p8;
|
|
|
|
if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
p8->broken = broken;
|
|
ASN1_INTEGER_set (p8->version, 0);
|
|
if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
PKCS8_PRIV_KEY_INFO_free (p8);
|
|
return NULL;
|
|
}
|
|
p8->pkey->type = V_ASN1_OCTET_STRING;
|
|
switch (EVP_PKEY_type(pkey->type)) {
|
|
#ifndef NO_RSA
|
|
case EVP_PKEY_RSA:
|
|
|
|
if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
|
|
|
|
p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
|
|
p8->pkeyalg->parameter->type = V_ASN1_NULL;
|
|
if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
|
|
&p8->pkey->value.octet_string)) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
PKCS8_PRIV_KEY_INFO_free (p8);
|
|
return NULL;
|
|
}
|
|
break;
|
|
#endif
|
|
#ifndef NO_DSA
|
|
case EVP_PKEY_DSA:
|
|
if(!dsa_pkey2pkcs8(p8, pkey)) {
|
|
PKCS8_PRIV_KEY_INFO_free (p8);
|
|
return NULL;
|
|
}
|
|
|
|
break;
|
|
#endif
|
|
default:
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
|
|
PKCS8_PRIV_KEY_INFO_free (p8);
|
|
return NULL;
|
|
}
|
|
RAND_add(p8->pkey->value.octet_string->data,
|
|
p8->pkey->value.octet_string->length, 0);
|
|
return p8;
|
|
}
|
|
|
|
PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
|
|
{
|
|
switch (broken) {
|
|
|
|
case PKCS8_OK:
|
|
p8->broken = PKCS8_OK;
|
|
return p8;
|
|
break;
|
|
|
|
case PKCS8_NO_OCTET:
|
|
p8->broken = PKCS8_NO_OCTET;
|
|
p8->pkey->type = V_ASN1_SEQUENCE;
|
|
return p8;
|
|
break;
|
|
|
|
default:
|
|
EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
|
|
return NULL;
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
#ifndef NO_DSA
|
|
static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
|
|
{
|
|
ASN1_STRING *params;
|
|
ASN1_INTEGER *prkey;
|
|
ASN1_TYPE *ttmp;
|
|
STACK *ndsa;
|
|
unsigned char *p, *q;
|
|
int len;
|
|
p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
|
|
len = i2d_DSAparams (pkey->pkey.dsa, NULL);
|
|
if (!(p = Malloc(len))) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
PKCS8_PRIV_KEY_INFO_free (p8);
|
|
return 0;
|
|
}
|
|
q = p;
|
|
i2d_DSAparams (pkey->pkey.dsa, &q);
|
|
params = ASN1_STRING_new();
|
|
ASN1_STRING_set(params, p, len);
|
|
Free(p);
|
|
/* Get private key into integer */
|
|
if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
|
|
return 0;
|
|
}
|
|
|
|
switch(p8->broken) {
|
|
|
|
case PKCS8_OK:
|
|
case PKCS8_NO_OCTET:
|
|
|
|
if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
|
|
&p8->pkey->value.octet_string)) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
M_ASN1_INTEGER_free (prkey);
|
|
return 0;
|
|
}
|
|
|
|
M_ASN1_INTEGER_free (prkey);
|
|
p8->pkeyalg->parameter->value.sequence = params;
|
|
p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
|
|
|
|
break;
|
|
|
|
case PKCS8_NS_DB:
|
|
|
|
p8->pkeyalg->parameter->value.sequence = params;
|
|
p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
|
|
ndsa = sk_new_null();
|
|
ttmp = ASN1_TYPE_new();
|
|
if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
|
|
PKCS8_PRIV_KEY_INFO_free(p8);
|
|
return 0;
|
|
}
|
|
ttmp->type = V_ASN1_INTEGER;
|
|
sk_push(ndsa, (char *)ttmp);
|
|
|
|
ttmp = ASN1_TYPE_new();
|
|
ttmp->value.integer = prkey;
|
|
ttmp->type = V_ASN1_INTEGER;
|
|
sk_push(ndsa, (char *)ttmp);
|
|
|
|
p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
|
|
|
|
if (!ASN1_seq_pack(ndsa, i2d_ASN1_TYPE,
|
|
&p8->pkey->value.octet_string->data,
|
|
&p8->pkey->value.octet_string->length)) {
|
|
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
M_ASN1_INTEGER_free(prkey);
|
|
return 0;
|
|
}
|
|
sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
break;
|
|
|
|
case PKCS8_EMBEDDED_PARAM:
|
|
|
|
p8->pkeyalg->parameter->type = V_ASN1_NULL;
|
|
ndsa = sk_new_null();
|
|
ttmp = ASN1_TYPE_new();
|
|
ttmp->value.sequence = params;
|
|
ttmp->type = V_ASN1_SEQUENCE;
|
|
sk_push(ndsa, (char *)ttmp);
|
|
|
|
ttmp = ASN1_TYPE_new();
|
|
ttmp->value.integer = prkey;
|
|
ttmp->type = V_ASN1_INTEGER;
|
|
sk_push(ndsa, (char *)ttmp);
|
|
|
|
p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
|
|
|
|
if (!ASN1_seq_pack(ndsa, i2d_ASN1_TYPE,
|
|
&p8->pkey->value.octet_string->data,
|
|
&p8->pkey->value.octet_string->length)) {
|
|
|
|
EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
|
|
sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
M_ASN1_INTEGER_free (prkey);
|
|
return 0;
|
|
}
|
|
sk_pop_free(ndsa, ASN1_TYPE_free);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
#endif
|