Verify V3 certification signatures

src/packet/public_key.js

@@ -31,6 +31,7 @@ var util = require('../util'),
  * major versions.  Consequently, this section is complex.
  */
 module.exports = function packet_public_key() {
+  this.version = 4;
   /** Key creation date.
    * @type {Date} */
   this.created = new Date();
@@ -40,6 +41,7 @@ module.exports = function packet_public_key() {
   /** Public key algorithm
    * @type {openpgp.publickey} */
   this.algorithm = 'rsa_sign';
+  this.expirationTimeV3 = 0;
 
 
   /**
@@ -53,9 +55,9 @@ module.exports = function packet_public_key() {
    */
   this.readPublicKey = this.read = function(bytes) {
     // A one-octet version number (3 or 4).
-    var version = bytes.charCodeAt(0);
+    this.version = bytes.charCodeAt(0);
 
-    if (version == 4) {
+    if (this.version == 4) {
       // - A four-octet number denoting the time that the key was created.
       this.created = util.readDate(bytes.substr(1, 4));
 
@@ -78,6 +80,34 @@ module.exports = function packet_public_key() {
           util.print_error("openpgp.packet.keymaterial.js\n" + 'error reading MPI @:' + p);
       }
 
+      return p + 6;
+    } else if (this.version == 3) {
+      // - A four-octet number denoting the time that the key was created.
+      this.created = util.readDate(bytes.substr(1, 4));
+
+      // - A two-octet number denoting the time in days that this key is
+      //   valid.  If this number is zero, then it does not expire.
+      this.expirationTimeV3 = util.readNumber(bytes.substr(5, 2)); 
+
+      // - A one-octet number denoting the public-key algorithm of this key.
+      this.algorithm = enums.read(enums.publicKey, bytes.charCodeAt(7));
+
+      var mpicount = crypto.getPublicMpiCount(this.algorithm);
+      this.mpi = [];
+
+      var bmpi = bytes.substr(8);
+      var p = 0;
+
+      for (var i = 0; i < mpicount && p < bmpi.length; i++) {
+
+        this.mpi[i] = new type_mpi();
+
+        p += this.mpi[i].read(bmpi.substr(p))
+
+        if (p > bmpi.length)
+          util.print_error("openpgp.packet.keymaterial.js\n" + 'error reading MPI @:' + p);
+      }
+
       return p + 6;
     } else {
       throw new Error('Version ' + version + ' of the key packet is unsupported.');
@@ -96,8 +126,11 @@ module.exports = function packet_public_key() {
    */
   this.writePublicKey = this.write = function() {
     // Version
-    var result = String.fromCharCode(4);
+    var result = String.fromCharCode(this.version);
     result += util.writeDate(this.created);
+    if (this.version == 3) {
+      result += util.writeNumber(this.expirationTimeV3, 2);
+    }
     result += String.fromCharCode(enums.write(enums.publicKey, this.algorithm));
 
     var mpicount = crypto.getPublicMpiCount(this.algorithm);

src/packet/signature.js

@@ -33,7 +33,7 @@ var util = require('../util'),
  */
 module.exports = function packet_signature() {
 
-  this.version = null;
+  this.version = 4;
   this.signatureType = null;
   this.hashAlgorithm = null;
   this.publicKeyAlgorithm = null;
@@ -517,7 +517,6 @@ module.exports = function packet_signature() {
       case t.cert_casual:
       case t.cert_positive:
       case t.cert_revocation:
-        {
         var packet, tag;
 
         if (data.userid !== undefined) {
@@ -531,25 +530,29 @@ module.exports = function packet_signature() {
 
         var bytes = packet.write();
 
+        if (this.version == 4) {
           return this.toSign(t.key, data) +
           String.fromCharCode(tag) +
           util.writeNumber(bytes.length, 4) +
           bytes; 
+        } else if (this.version == 3) {
+          return this.toSign(t.key, data) +
+          bytes;
         }
+        break;
+
       case t.subkey_binding:
       case t.key_binding:
-        {
         return this.toSign(t.key, data) + this.toSign(t.key, {
           key: data.bind
         });
-        }
+
       case t.key:
-        {
         if (data.key == undefined)
           throw new Error('Key packet is required for this sigtature.');
 
         return data.key.writeOld();
-        }
+
       case t.key_revocation:
       case t.subkey_revocation:
         return this.toSign(t.key, data);

test/general/signature.js

@@ -221,6 +221,35 @@ var pub_revoked =
       '=ok+o',
       '-----END PGP PUBLIC KEY BLOCK-----'].join('\n');
 
+var pub_v3 =
+      ['-----BEGIN PGP PUBLIC KEY BLOCK-----',
+      'Version: SKS 1.1.3',
+      '',
+      'mQENAy9J/w4AAAEIALBDDD4vWqG/Jg59ghhMYAa+E7ECCTv2At8hxsM5cMP8P9sMLjs+GMfD',
+      'IdQSOqlQXbunYADvM1l/h2fOuUMoYFIIGaUsO5Daxvd9uWceM4DVzhXMeJZb9wc5jEJEF21+',
+      'qidKj5OGsMyTrg++mn4Gh/aFXvvy3N3KWaQpPfNi3NRZUpNLz0IlfbXVBQGD6reLoxPptJun',
+      'NqpClyRiesgq8HCscmB2oQo+b9KzSSgzU9qQJA4SljMYVmJ2sDE/sjREI8iKL8lIgUMhJG9q',
+      'NggWjuxFTpVcGKkuQFJIvdL+UhTVvEBuqw6n4cmFAzfZ/AInJM032qLtsaIf5begFKI3up0A',
+      'BRGJARUDBSAxm7HC5begFKI3up0BAbdDB/0TOcI0ec+OPxC5RTZAltgIgyUc0yOjHoTD/yBh',
+      'WjZdQ9YVrLGMWTW4fjhm4rFnppVZKS/N71bwI76SnN9zO4pPfx86aQPR7StmSLJxB+cfh2GL',
+      'gudJoG9ifhJWdNYMUD/yhA0TpJkdHMD5yTDE5Ce/PqKLviiX9C5MPW0AT1MDvafQlzeUXfb5',
+      '1a71vQNPw7W1NBAVZRwztm7TNUaxWMFuOmUtOJpq4F/qDQTIHW2zGPJvl47rpf6JSiyIyU70',
+      'l0deiQcZOXPC80tgInhNoBrz3zbEXhXRJo1fHkr2YSLclpJaoUOHsPxoyrNB28ASL5ZknPwI',
+      'Zx3+cFxaGpRprfSdtCFKb2huIEEuIFBlcnJ5IDxwZXJyeUBwaG9lbml4Lm5ldD6JARUDBRAv',
+      'Sf8k5begFKI3up0BAcbGB/0eLod2qrQxoE2/RUWQtqklOPUj/p/ZTmvZm8BgsdIflb0AMeey',
+      '9o8AbxyAgA3pcrcCjcye79M1Ma2trEvRksvs8hViuq3BXXjDbjPZi3wTtKSvbAC022OV52Sb',
+      '8/sgiTGp7xC8QMqS8w4ZeKoxJGh1TVMYrevUA8a2Rr5aDqrR3EA4rifSHwkVjJWOPF69xiKt',
+      'IVA0LcYJvGsPOQCf2ag+nOcnDrF4dvcmg6XZ/RyLepve+1qkhXsA/oq+yHoaqWfe+bwgssk/',
+      'qw1aEUk7Di8x7vY+cfjvWaazcYGw8kkIwSSqqIq0pkKFz2xDDfSaDJl6OW/2GUK0wDpJmYZo',
+      'PN40iJUDBRAvSgDsU5OkROGu2G8BAeUqBACbC45t4+wYxWCxxp81pkFRb8RWBvEvbXI+Spwd',
+      '4NcKs8jc5OVC8V02yiq4KbKFDRxdw2OWpUCSRAJe1gjsfFrZ+2RivpKk06kbAYthES03MjXg',
+      'cfcV3z2d7IWanJzdcOlzsHzPe1+RoUAaqBjvcqPRCGRlk0ogkYHyWYxElc6574iVAwUQL9iL',
+      'CXr7ES8bepftAQGPywP/d9GSpEmS7LLIqazl4rgN1nkXN5KqduiH8Whu3xcBrdOAn7IYnGTp',
+      'O+Ag4qwKKH+y/ke9CeZL6AnrU9c0pux150dHsDeHtpTPyInkjgKI7BofprydvpiFNd0nlAi4',
+      'J4SAEYr3q92Qn/IiKpnLgo6Ls/GFb7q6y1O/2LL8PC2zrYU=',
+      '=eoGb',
+      '-----END PGP PUBLIC KEY BLOCK-----'].join('\n');
+
 
   var tests = [function() {
     var priv_key = openpgp.key.readArmored(priv_key_arm1).packets;
@@ -483,6 +512,13 @@ var pub_revoked =
     var verified = !pubKey.packets[4].keyNeverExpires && pubKey.packets[4].keyExpirationTime == 5*365*24*60*60;
 
     return new unit.result("Verify key expiration date", verified);
+  }, function() {
+
+    var pubKey = openpgp.key.readArmored(pub_v3);
+
+    var verified = pubKey.packets[3].verify(pubKey.packets[0], {key: pubKey.packets[0], userid: pubKey.packets[2]});
+
+    return new unit.result("Verify V3 certification signature", verified);
   }];
 
   var results = [];