diff --git a/src/ciphers/openpgp.crypto.js b/src/ciphers/openpgp.crypto.js
index 5106651e..0a61b71e 100644
--- a/src/ciphers/openpgp.crypto.js
+++ b/src/ciphers/openpgp.crypto.js
@@ -389,7 +389,6 @@ function openpgp_crypto_getRandomBigIntegerInRange(min, max) {
 
 //This is a test method to ensure that encryption/decryption with a given 1024bit RSAKey object functions as intended
 function openpgp_crypto_testRSA(key){
-	debugger;
     var rsa = new RSA();
 	var mpi = new openpgp_type_mpi();
 	mpi.create(openpgp_encoding_eme_pkcs1_encode('ABABABAB', 128));
diff --git a/src/compression/zlib/jsxcompressor.js b/src/compression/zlib/jsxcompressor.js
index 23729126..1fdee266 100644
--- a/src/compression/zlib/jsxcompressor.js
+++ b/src/compression/zlib/jsxcompressor.js
@@ -343,9 +343,6 @@ JXG.Util.Unzip = function (barray){
                 X = currentTree[xtreepos];
             }
         }
-        if (debug)
-        	document.write("ret3");
-        return -1;
     };
     
     function DeflateLoop() {
@@ -787,7 +784,7 @@ JXG.Util.Unzip.prototype.unzip = function() {
 			CRC = 0xffffffff;
 			SIZE = 0;
 			
-			if (size = 0 && fileOut.charAt(fileout.length-1)=="/"){
+			if (size == 0 && fileOut.charAt(fileout.length-1)=="/"){
 				//skipdir
 				if (debug)
 					alert("skipdir");
diff --git a/src/encoding/openpgp.encoding.asciiarmor.js b/src/encoding/openpgp.encoding.asciiarmor.js
index 8903bc61..ede8443c 100644
--- a/src/encoding/openpgp.encoding.asciiarmor.js
+++ b/src/encoding/openpgp.encoding.asciiarmor.js
@@ -69,7 +69,7 @@ function openpgp_encoding_deArmor(text) {
 			util.print_error("Ascii armor integrity check on message failed: '"
 				+ checksum
 				+ "' should be '"
-				+ getCheckSum(data)) + "'";
+				+ getCheckSum(data) + "'");
 			return false;
 		}
 	} else {
diff --git a/src/openpgp.msg.publickey.js b/src/openpgp.msg.publickey.js
index 8293707d..6a1506ed 100644
--- a/src/openpgp.msg.publickey.js
+++ b/src/openpgp.msg.publickey.js
@@ -20,9 +20,6 @@
  * @classdesc Decoded public key object for internal openpgp.js use
  */
 function openpgp_msg_publickey() {
-	this.data;
-	this.position;
-	this.len;
 	this.tostring = "OPENPGP PUBLIC KEY\n";
 	this.bindingSignature = null;
 	this.publicKeyPacket = null;
diff --git a/src/packet/openpgp.packet.keymaterial.js b/src/packet/openpgp.packet.keymaterial.js
index b0357bba..32b7bf92 100644
--- a/src/packet/openpgp.packet.keymaterial.js
+++ b/src/packet/openpgp.packet.keymaterial.js
@@ -135,7 +135,7 @@ function openpgp_packet_keymaterial() {
 			
 		    // - 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.expiration = (input[mypos++].charCodeAt() << 8) & input[mypos++].charCodeAt();
+			this.expiration = (input[mypos++].charCodeAt() << 8) | input[mypos++].charCodeAt();
 	
 		    // - A one-octet number denoting the public-key algorithm of this key.
 			this.publicKeyAlgorithm = input[mypos++].charCodeAt();