ECBMode.prototype.updateDecrypt = function(src) {
// Pad the source with the last bytes from last update
if(this.lastBytes != null && this.lastBytes.length > 0) {
src = this.lastBytes + src;
}
// Chop of the last block to ensure we can remove padding if existing
if(src.length > this.blockSize) {
this.lastBytes = src.substr(src.length - this.blockSize);
src = src.substr(0, src.length - this.blockSize);
return util.arrayToBinaryString(this.decrypt(src, true));
} else {
// Less than the blocksize pad it
return util.arrayToBinaryString(this.decrypt(src));
}
}
ECBMode.prototype.updateEncrypt = function(src) {
// Left over bytes if any
var leftOverBytes = src.length % this.blockSize;
// If we have leftover bytes encrypt up to the blocksize available and save the leftover bytes for the final
if(leftOverBytes > 0) {
this.lastBytes = src.substr(src.length - leftOverBytes);
src = src.substr(0, src.length - leftOverBytes);
} else {
this.lastBytes = "";
}
return util.arrayToBinaryString(this.encrypt(src, true));
}
ECBMode.prototype.finalEncrypt = function() {
return util.arrayToBinaryString(this.encrypt(this.lastBytes));
}