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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "secoid.h"
#include "secder.h" /* XXX remove this when remove the DERTemplate */
#include "secasn1.h"
#include "secitem.h"
#include "secerr.h"
#include "nsshash.h"
SECOidTag
SECOID_GetAlgorithmTag(const SECAlgorithmID *id)
{
if (id == NULL || id->algorithm.data == NULL)
return SEC_OID_UNKNOWN;
return SECOID_FindOIDTag(&(id->algorithm));
}
static PRBool
secoid_IsRSAPKCS1(SECOidTag which)
{
switch (which) {
case SEC_OID_PKCS1_RSA_ENCRYPTION:
case SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_MD4_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_SHA224_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION:
case SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
SECStatus
SECOID_SetAlgorithmID(PLArenaPool *arena, SECAlgorithmID *id, SECOidTag which,
SECItem *params)
{
SECOidData *oiddata;
PRBool add_null_param;
oiddata = SECOID_FindOIDByTag(which);
if (!oiddata) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return SECFailure;
}
if (SECITEM_CopyItem(arena, &id->algorithm, &oiddata->oid))
return SECFailure;
if ((secoid_IsRSAPKCS1(which)) ||
(HASH_GetHashTypeByOidTag(which) != HASH_AlgNULL)) {
add_null_param = PR_TRUE;
} else {
add_null_param = PR_FALSE;
}
if (params) {
/*
* I am specifically *not* enforcing the following assertion
* (by following it up with an error and a return of failure)
* because I do not want to introduce any change in the current
* behavior. But I do want for us to notice if the following is
* ever true, because I do not think it should be so and probably
* signifies an error/bug somewhere.
*/
PORT_Assert(!add_null_param || (params->len == 2 && params->data[0] == SEC_ASN1_NULL && params->data[1] == 0));
if (SECITEM_CopyItem(arena, &id->parameters, params)) {
return SECFailure;
}
} else {
/*
* Again, this is not considered an error. But if we assume
* that nobody tries to set the parameters field themselves
* (but always uses this routine to do that), then we should
* not hit the following assertion. Unless they forgot to zero
* the structure, which could also be a bad (and wrong) thing.
*/
PORT_Assert(id->parameters.data == NULL);
if (add_null_param) {
(void)SECITEM_AllocItem(arena, &id->parameters, 2);
if (id->parameters.data == NULL) {
return SECFailure;
}
id->parameters.data[0] = SEC_ASN1_NULL;
id->parameters.data[1] = 0;
}
}
return SECSuccess;
}
SECStatus
SECOID_CopyAlgorithmID(PLArenaPool *arena, SECAlgorithmID *to,
const SECAlgorithmID *from)
{
SECStatus rv;
rv = SECITEM_CopyItem(arena, &to->algorithm, &from->algorithm);
if (rv)
return rv;
rv = SECITEM_CopyItem(arena, &to->parameters, &from->parameters);
return rv;
}
void
SECOID_DestroyAlgorithmID(SECAlgorithmID *algid, PRBool freeit)
{
SECITEM_ZfreeItem(&algid->parameters, PR_FALSE);
SECITEM_FreeItem(&algid->algorithm, PR_FALSE);
if (freeit == PR_TRUE)
PORT_Free(algid);
}
SECComparison
SECOID_CompareAlgorithmID(SECAlgorithmID *a, SECAlgorithmID *b)
{
SECComparison rv;
rv = SECITEM_CompareItem(&a->algorithm, &b->algorithm);
if (rv)
return rv;
rv = SECITEM_CompareItem(&a->parameters, &b->parameters);
return rv;
}
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