@Override
public void reduce(Text key, Iterable<LongWritable> vals, Context context)
throws IOException, InterruptedException {
int s = 0;
for (LongWritable lw : vals) s += lw.get();
String pt = key.toString() + " " + s;
byte[] iv = crypto.randomBytes(AES_BLOCK_SIZE);
byte[] ct = crypto.encrypt_word_rnd(pt, iv);
context.write(new BytesWritable(iv), new BytesWritable(ct));
}
@Override
public void map(Text key, Text value, Context context)
throws IOException, InterruptedException {
byte[] randomIV = crypto.randomBytes(AES_BLOCK_SIZE);
byte[] pt = new byte[KEY_LENGTH + VALUE_LENGTH];
System.arraycopy(key.copyBytes(), 0, pt, 0, KEY_LENGTH);
System.arraycopy(value.copyBytes(), 0, pt, KEY_LENGTH, VALUE_LENGTH);
// byte[] ct = crypto.encrypt_word_rnd(value.toString(), randomIV);
byte[] ct = crypto.encrypt_word_cbc(pt, randomIV);
System.out.println("ct size = " + ct.length);
context.write(new BytesWritable(randomIV), new BytesWritable(ct));
}