--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nss/lib/util/secalgid.c	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,128 @@
+/* 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"
+
+SECOidTag
+SECOID_GetAlgorithmTag(const SECAlgorithmID *id)
+{
+    if (id == NULL || id->algorithm.data == NULL)
+	return SEC_OID_UNKNOWN;
+
+    return SECOID_FindOIDTag (&(id->algorithm));
+}
+
+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;
+
+    switch (which) {
+      case SEC_OID_MD2:
+      case SEC_OID_MD4:
+      case SEC_OID_MD5:
+      case SEC_OID_SHA1:
+      case SEC_OID_SHA224:
+      case SEC_OID_SHA256:
+      case SEC_OID_SHA384:
+      case SEC_OID_SHA512:
+      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:
+	add_null_param = PR_TRUE;
+	break;
+      default:
+	add_null_param = PR_FALSE;
+	break;
+    }
+
+    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_FreeItem(&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;
+}