-/* a_null.c */
+/* dh_asn1.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+ * project 2000.
*/
/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 2000 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
#include <stdio.h>
#include "cryptlib.h"
-#include <openssl/asn1.h>
+#include <openssl/bn.h>
+#include <openssl/dh.h>
+#include <openssl/objects.h>
+#include <openssl/asn1t.h>
-/* ASN1 functions for NULL type. For compatibility with other ASN1 code
- * it returns a pointer to an "ASN1_NULL" structure. The new/free functions
- * don't need to do any allocating because nothing is stored in a NULL.
- */
-
-int i2d_ASN1_NULL(ASN1_NULL *a, unsigned char **pp)
- {
- if(!a) return 0;
- if (pp) ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
- return 2;
- }
-
-ASN1_NULL *d2i_ASN1_NULL(ASN1_NULL **a, unsigned char **pp, long length)
- {
- ASN1_NULL *ret = NULL;
- unsigned char *p;
- long len;
- int inf,tag,xclass;
- int i=0;
-
- p= *pp;
- inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
- if (inf & 0x80)
- {
- i=ASN1_R_BAD_OBJECT_HEADER;
- goto err;
- }
-
- if (tag != V_ASN1_NULL)
- {
- i=ASN1_R_EXPECTING_A_NULL;
- goto err;
- }
-
- if (len != 0)
- {
- i=ASN1_R_NULL_IS_WRONG_LENGTH;
- goto err;
- }
- ret=(ASN1_NULL *)1;
- if (a != NULL) (*a)=ret;
- *pp=p;
- return(ret);
-err:
- ASN1err(ASN1_F_D2I_ASN1_NULL,i);
- return(ret);
- }
-
-ASN1_NULL *ASN1_NULL_new(void)
+/* Override the default free and new methods */
+static int dh_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- return (ASN1_NULL *)1;
+ if(operation == ASN1_OP_NEW_PRE) {
+ *pval = (ASN1_VALUE *)DH_new();
+ if(*pval) return 2;
+ return 0;
+ } else if(operation == ASN1_OP_FREE_PRE) {
+ DH_free((DH *)*pval);
+ *pval = NULL;
+ return 2;
+ }
+ return 1;
}
-void ASN1_NULL_free(ASN1_NULL *a)
-{
- return;
-}
+ASN1_SEQUENCE_cb(DHparams, dh_cb) = {
+ ASN1_SIMPLE(DH, p, BIGNUM),
+ ASN1_SIMPLE(DH, g, BIGNUM),
+ ASN1_OPT(DH, length, ZLONG),
+} ASN1_SEQUENCE_END_cb(DH, DHparams);
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DH, DHparams, DHparams)