From 3563e36580c7dad68cd6d3f7eb82eef570fc0c76 Mon Sep 17 00:00:00 2001
From: mdw <mdw>
Date: Sat, 3 Apr 2004 03:31:01 +0000
Subject: [PATCH] Allow explicit group parameters for DH groups.

---
 keyutil.c | 37 +++++++++++++++++++++++++++++--------
 1 file changed, 29 insertions(+), 8 deletions(-)

diff --git a/keyutil.c b/keyutil.c
index 1619707..4bd42fe 100644
--- a/keyutil.c
+++ b/keyutil.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: keyutil.c,v 1.18 2004/04/01 12:50:09 mdw Exp $
+ * $Id: keyutil.c,v 1.19 2004/04/03 03:31:01 mdw Exp $
  *
  * Simple key manager program
  *
@@ -30,6 +30,9 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: keyutil.c,v $
+ * Revision 1.19  2004/04/03 03:31:01  mdw
+ * Allow explicit group parameters for DH groups.
+ *
  * Revision 1.18  2004/04/01 12:50:09  mdw
  * Add cyclic group abstraction, with test code.  Separate off exponentation
  * functions for better static linking.  Fix a buttload of bugs on the way.
@@ -130,6 +133,7 @@
 #include "mprand.h"
 #include "mptext.h"
 #include "pgen.h"
+#include "ptab.h"
 #include "rsa.h"
 
 #include "sha-mgf.h"
@@ -625,6 +629,22 @@ static void alg_dhparam(keyopts *k)
     dh_param dp;
     int rc;
 
+    if (k->curve) {
+      qd_parse qd;
+      
+      if (strcmp(k->curve, "list") == 0) {
+	const pentry *pe;
+	printf("Built-in prime groups:\n");
+	for (pe = ptab; pe->name; pe++)
+	  printf("  %s\n", pe->name);
+	exit(0);
+      }
+      qd.p = k->curve;
+      if (dh_parse(&qd, &dp))
+	die(EXIT_FAILURE, "error in group spec: %s", qd.e);
+      goto done;
+    }
+
     if (!k->bits)
       k->bits = 1024;
 
@@ -658,6 +678,7 @@ static void alg_dhparam(keyopts *k)
     if (rc)
       die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed");
 
+  done:
     key_structure(kd);
     mpkey(kd, "p", dp.p, KCAT_SHARE);
     mpkey(kd, "q", dp.q, KCAT_SHARE);
@@ -751,6 +772,13 @@ static void alg_ecparam(keyopts *k)
     /* --- Decide on a curve --- */
 
     if (!k->bits) k->bits = 256;
+    if (k->curve && strcmp(k->curve, "list") == 0) {
+      const ecentry *ee;
+      printf("Built-in elliptic curves:\n");
+      for (ee = ectab; ee->name; ee++)
+	printf("  %s\n", ee->name);
+      exit(0);
+    }
     if (!k->curve) {
       if (k->bits <= 56) k->curve = "secp112r1";
       else if (k->bits <= 64) k->curve = "secp128r1";
@@ -961,13 +989,6 @@ static int cmd_add(int argc, char *argv[])
       /* --- Elliptic curve parameters --- */
 
       case 'C':
-	if (strcmp(optarg, "list") == 0) {
-	  const ecentry *ee;
-	  printf("Built-in elliptic curves:\n");
-	  for (ee = ectab; ee->name; ee++)
-	    printf("  %s\n", ee->name);
-	  exit(0);
-	}
 	k.curve = optarg;
 	break;
 
-- 
2.11.0