/* crypto/pkcs7/pk7_lib.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 <stdio.h>
#include "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/x509.h>
long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
{
int nid;
long ret;
nid=OBJ_obj2nid(p7->type);
switch (cmd)
{
case PKCS7_OP_SET_DETACHED_SIGNATURE:
if (nid == NID_pkcs7_signed)
{
ret=p7->detached=(int)larg;
if (ret && PKCS7_type_is_data(p7->d.sign->contents))
{
ASN1_OCTET_STRING *os;
os=p7->d.sign->contents->d.data;
ASN1_OCTET_STRING_free(os);
p7->d.sign->contents->d.data = NULL;
}
}
else
{
PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
ret=0;
}
break;
case PKCS7_OP_GET_DETACHED_SIGNATURE:
if (nid == NID_pkcs7_signed)
{
if(!p7->d.sign || !p7->d.sign->contents->d.ptr)
ret = 1;
else ret = 0;
p7->detached = ret;
}
else
{
PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
ret=0;
}
break;
default:
PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION);
ret=0;
}
return(ret);
}
int PKCS7_content_new(PKCS7 *p7, int type)
{
PKCS7 *ret=NULL;
if ((ret=PKCS7_new()) == NULL) goto err;
if (!PKCS7_set_type(ret,type)) goto err;
if (!PKCS7_set_content(p7,ret)) goto err;
return(1);
err:
if (ret != NULL) PKCS7_free(ret);
return(0);
}
int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
{
int i;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signed:
if (p7->d.sign->contents != NULL)
PKCS7_free(p7->d.sign->contents);
p7->d.sign->contents=p7_data;
break;
case NID_pkcs7_digest:
if (p7->d.digest->contents != NULL)
PKCS7_free(p7->d.digest->contents);
p7->d.digest->contents=p7_data;
break;
case NID_pkcs7_data:
case NID_pkcs7_enveloped:
case NID_pkcs7_signedAndEnveloped:
case NID_pkcs7_encrypted:
default:
PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
goto err;
}
return(1);
err:
return(0);
}
int PKCS7_set_type(PKCS7 *p7, int type)
{
ASN1_OBJECT *obj;
/*PKCS7_content_free(p7);*/
obj=OBJ_nid2obj(type); /* will not fail */
switch (type)
{
case NID_pkcs7_signed:
p7->type=obj;
if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
goto err;
if (!ASN1_INTEGER_set(p7->d.sign->version,1))
{
PKCS7_SIGNED_free(p7->d.sign);
p7->d.sign=NULL;
goto err;
}
break;
case NID_pkcs7_data:
p7->type=obj;
if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL)
goto err;
break;
case NID_pkcs7_signedAndEnveloped:
p7->type=obj;
if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
== NULL) goto err;
ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1);
if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1))
goto err;
p7->d.signed_and_enveloped->enc_data->content_type
= OBJ_nid2obj(NID_pkcs7_data);
break;
case NID_pkcs7_enveloped:
p7->type=obj;
if ((p7->d.enveloped=PKCS7_ENVELOPE_new())
== NULL) goto err;
if (!ASN1_INTEGER_set(p7->d.enveloped->version,0))
goto err;
p7->d.enveloped->enc_data->content_type
= OBJ_nid2obj(NID_pkcs7_data);
break;
case NID_pkcs7_encrypted:
p7->type=obj;
if ((p7->d.encrypted=PKCS7_ENCRYPT_new())
== NULL) goto err;
if (!ASN1_INTEGER_set(p7->d.encrypted->version,0))
goto err;
p7->d.encrypted->enc_data->content_type
= OBJ_nid2obj(NID_pkcs7_data);
break;
case NID_pkcs7_digest:
p7->type=obj;
if ((p7->d.digest=PKCS7_DIGEST_new())
== NULL) goto err;
if (!ASN1_INTEGER_set(p7->d.digest->version,0))
goto err;
break;
default:
PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
goto err;
}
return(1);
err:
return(0);
}
int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
{
p7->type = OBJ_nid2obj(type);
p7->d.other = other;
return 1;
}
int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
{
int i,j,nid;
X509_ALGOR *alg;
STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
STACK_OF(X509_ALGOR) *md_sk;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signed:
signer_sk= p7->d.sign->signer_info;
md_sk= p7->d.sign->md_algs;
break;
case NID_pkcs7_signedAndEnveloped:
signer_sk= p7->d.signed_and_enveloped->signer_info;
md_sk= p7->d.signed_and_enveloped->md_algs;
break;
default:
PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
return(0);
}
nid=OBJ_obj2nid(psi->digest_alg->algorithm);
/* If the digest is not currently listed, add it */
j=0;
for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
{
alg=sk_X509_ALGOR_value(md_sk,i);
if (OBJ_obj2nid(alg->algorithm) == nid)
{
j=1;
break;
}
}
if (!j) /* we need to add another algorithm */
{
if(!(alg=X509_ALGOR_new())
|| !(alg->parameter = ASN1_TYPE_new()))
{
X509_ALGOR_free(alg);
PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
return(0);
}
alg->algorithm=OBJ_nid2obj(nid);
alg->parameter->type = V_ASN1_NULL;
if (!sk_X509_ALGOR_push(md_sk,alg))
{
X509_ALGOR_free(alg);
return 0;
}
}
if (!sk_PKCS7_SIGNER_INFO_push(signer_sk,psi))
return 0;
return(1);
}
int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
{
int i;
STACK_OF(X509) **sk;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signed:
sk= &(p7->d.sign->cert);
break;
case NID_pkcs7_signedAndEnveloped:
sk= &(p7->d.signed_and_enveloped->cert);
break;
default:
PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
return(0);
}
if (*sk == NULL)
*sk=sk_X509_new_null();
if (*sk == NULL)
{
PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,ERR_R_MALLOC_FAILURE);
return 0;
}
CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
if (!sk_X509_push(*sk,x509))
{
X509_free(x509);
return 0;
}
return(1);
}
int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
{
int i;
STACK_OF(X509_CRL) **sk;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signed:
sk= &(p7->d.sign->crl);
break;
case NID_pkcs7_signedAndEnveloped:
sk= &(p7->d.signed_and_enveloped->crl);
break;
default:
PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
return(0);
}
if (*sk == NULL)
*sk=sk_X509_CRL_new_null();
if (*sk == NULL)
{
PKCS7err(PKCS7_F_PKCS7_ADD_CRL,ERR_R_MALLOC_FAILURE);
return 0;
}
CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
if (!sk_X509_CRL_push(*sk,crl))
{
X509_CRL_free(crl);
return 0;
}
return(1);
}
int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
const EVP_MD *dgst)
{
int nid;
char is_dsa;
if (pkey->type == EVP_PKEY_DSA || pkey->type == EVP_PKEY_EC)
is_dsa = 1;
else
is_dsa = 0;
/* We now need to add another PKCS7_SIGNER_INFO entry */
if (!ASN1_INTEGER_set(p7i->version,1))
goto err;
if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
X509_get_issuer_name(x509)))
goto err;
/* because ASN1_INTEGER_set is used to set a 'long' we will do
* things the ugly way. */
M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
if (!(p7i->issuer_and_serial->serial=
M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
goto err;
/* lets keep the pkey around for a while */
CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
p7i->pkey=pkey;
/* Set the algorithms */
if (is_dsa) p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1);
else
p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));
if (p7i->digest_alg->parameter != NULL)
ASN1_TYPE_free(p7i->digest_alg->parameter);
if ((p7i->digest_alg->parameter=ASN1_TYPE_new()) == NULL)
goto err;
p7i->digest_alg->parameter->type=V_ASN1_NULL;
if (p7i->digest_enc_alg->parameter != NULL)
ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
nid = EVP_PKEY_type(pkey->type);
if (nid == EVP_PKEY_RSA)
{
p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_rsaEncryption);
if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
goto err;
p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
}
else if (nid == EVP_PKEY_DSA)
{
#if 1
/* use 'dsaEncryption' OID for compatibility with other software
* (PKCS #7 v1.5 does specify how to handle DSA) ... */
p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsa);
#else
/* ... although the 'dsaWithSHA1' OID (as required by RFC 2630 for CMS)
* would make more sense. */
p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsaWithSHA1);
#endif
p7i->digest_enc_alg->parameter = NULL; /* special case for DSA: omit 'parameter'! */
}
else if (nid == EVP_PKEY_EC)
{
p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_ecdsa_with_SHA1);
if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
goto err;
p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
}
else
return(0);
return(1);
err:
return(0);
}
PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
const EVP_MD *dgst)
{
PKCS7_SIGNER_INFO *si;
if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
if (!PKCS7_add_signer(p7,si)) goto err;
return(si);
err:
PKCS7_SIGNER_INFO_free(si);
return(NULL);
}
int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
{
if (PKCS7_type_is_digest(p7))
{
if(!(p7->d.digest->md->parameter = ASN1_TYPE_new()))
{
PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE);
return 0;
}
p7->d.digest->md->parameter->type = V_ASN1_NULL;
p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
return 1;
}
PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE);
return 1;
}
STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
{
if (PKCS7_type_is_signed(p7))
{
return(p7->d.sign->signer_info);
}
else if (PKCS7_type_is_signedAndEnveloped(p7))
{
return(p7->d.signed_and_enveloped->signer_info);
}
else
return(NULL);
}
PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
{
PKCS7_RECIP_INFO *ri;
if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
if (!PKCS7_add_recipient_info(p7,ri)) goto err;
return(ri);
err:
PKCS7_RECIP_INFO_free(ri);
return(NULL);
}
int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
{
int i;
STACK_OF(PKCS7_RECIP_INFO) *sk;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signedAndEnveloped:
sk= p7->d.signed_and_enveloped->recipientinfo;
break;
case NID_pkcs7_enveloped:
sk= p7->d.enveloped->recipientinfo;
break;
default:
PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
return(0);
}
if (!sk_PKCS7_RECIP_INFO_push(sk,ri))
return 0;
return(1);
}
int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
{
if (!ASN1_INTEGER_set(p7i->version,0))
return 0;
if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
X509_get_issuer_name(x509)))
return 0;
M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
if (!(p7i->issuer_and_serial->serial=
M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
return 0;
X509_ALGOR_free(p7i->key_enc_algor);
if (!(p7i->key_enc_algor= X509_ALGOR_dup(x509->cert_info->key->algor)))
return 0;
CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
p7i->cert=x509;
return(1);
}
X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
{
if (PKCS7_type_is_signed(p7))
return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
si->issuer_and_serial->issuer,
si->issuer_and_serial->serial));
else
return(NULL);
}
int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
{
int i;
ASN1_OBJECT *objtmp;
PKCS7_ENC_CONTENT *ec;
i=OBJ_obj2nid(p7->type);
switch (i)
{
case NID_pkcs7_signedAndEnveloped:
ec=p7->d.signed_and_enveloped->enc_data;
break;
case NID_pkcs7_enveloped:
ec=p7->d.enveloped->enc_data;
break;
default:
PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
return(0);
}
/* Check cipher OID exists and has data in it*/
i = EVP_CIPHER_type(cipher);
if(i == NID_undef) {
PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
return(0);
}
objtmp = OBJ_nid2obj(i);
ec->cipher = cipher;
return 1;
}