libkmf/common/algoid.c

	algoid.c revision 02744e811b15322c5f109827a116c33bfe3438b5
/*
 * Copyright (c) 1995-2000 Intel Corporation. All rights reserved.
 */
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <stdlib.h>
#include <string.h>

#include <kmfapiP.h>

typedef struct {
    KMF_OID * AlgOID;
    KMF_ALGORITHM_INDEX AlgID;
} KMF_OID_ID;

/*
 * The following table defines the mapping of AlgOID's to AlgID's.
 */
static KMF_OID_ID ALGOID_ID_Table[] = {
    {(KMF_OID *)&KMFOID_X9CM_DSA, KMF_ALGID_DSA},
    {(KMF_OID *)&KMFOID_X9CM_DSAWithSHA1, KMF_ALGID_SHA1WithDSA},
    {(KMF_OID *)&KMFOID_SHA1, KMF_ALGID_SHA1},
    {(KMF_OID *)&KMFOID_RSA, KMF_ALGID_RSA},
    {(KMF_OID *)&KMFOID_DSA, KMF_ALGID_DSA},
    {(KMF_OID *)&KMFOID_MD5WithRSA, KMF_ALGID_MD5WithRSA},
    {(KMF_OID *)&KMFOID_MD2WithRSA, KMF_ALGID_MD2WithRSA},
    {(KMF_OID *)&KMFOID_SHA1WithRSA, KMF_ALGID_SHA1WithRSA},
    {(KMF_OID *)&KMFOID_SHA1WithDSA, KMF_ALGID_SHA1WithDSA}
};

#define NUM_ALGOIDS ((sizeof (ALGOID_ID_Table))/(sizeof (ALGOID_ID_Table[0])))

/*
 * Name: X509_AlgIdToAlgorithmOid
 *
 * Description:
 * This function maps the specified AlgID to the corresponding
 * Algorithm OID.
 *
 * Parameters:
 * alg_int - AlgID to be mapped.
 *
 * Return value:
 * Pointer to OID structure and NULL in case of failure.
 *
 */
KMF_OID *
X509_AlgIdToAlgorithmOid(KMF_ALGORITHM_INDEX alg_int)
{
    int i;

    switch (alg_int) {
        case KMF_ALGID_NONE:
            return (NULL);

        default:
            for (i = 0; i < NUM_ALGOIDS; i++) {
                if (ALGOID_ID_Table[i].AlgID == alg_int)
                    return (ALGOID_ID_Table[i].AlgOID);
            }
            break;
    }

    return (NULL);
}

/*
 * Name: X509_AlgorithmOidToAlgId
 *
 * Description:
 * This function maps the specified Algorithm OID to the corresponding
 * AlgID.
 *
 * Parameters:
 * Oid - OID to be mapped.
 *
 * Return value:
 * Algorithm ID and KMF_ALGID_NONE in case of failures.
 */
KMF_ALGORITHM_INDEX
X509_AlgorithmOidToAlgId(KMF_OID * Oid)
{
    int i;

    if ((Oid == NULL) ||
        (Oid->Data == NULL) ||
        (Oid->Length == 0)) {
        return (KMF_ALGID_NONE);
    }

    for (i = 0; i < NUM_ALGOIDS; i++) {
        if (IsEqualOid(ALGOID_ID_Table[i].AlgOID, Oid))
            return (ALGOID_ID_Table[i].AlgID);
    }

    return (KMF_ALGID_NONE);
}