Java XML Data Type Converter mixColumns(byte[] input, boolean inv)

Description

mix Columns

License

Open Source License

Declaration

protected static void mixColumns(byte[] input, boolean inv) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    private static byte[] gm_2 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "00020406080a0c0e10121416181a1c1e20222426282a2c2e30323436383a3c3e40424446484a4c4e50525456585a5c5e60626466686a6c6e70727476787a7c7e80828486888a8c8e90929496989a9c9ea0a2a4a6a8aaacaeb0b2b4b6b8babcbec0c2c4c6c8caccced0d2d4d6d8dadcdee0e2e4e6e8eaeceef0f2f4f6f8fafcfe1b191f1d131117150b090f0d030107053b393f3d333137352b292f2d232127255b595f5d535157554b494f4d434147457b797f7d737177756b696f6d636167659b999f9d939197958b898f8d83818785bbb9bfbdb3b1b7b5aba9afada3a1a7a5dbd9dfddd3d1d7d5cbc9cfcdc3c1c7c5fbf9fffdf3f1f7f5ebe9efede3e1e7e5");
    private static byte[] gm_3 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "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");
    private static byte[] gm_9 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "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");
    private static byte[] gm_11 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "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");
    private static byte[] gm_13 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "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");
    private static byte[] gm_14 = javax.xml.bind.DatatypeConverter.parseHexBinary(
            "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");
    private static byte[] galois_matrix = javax.xml.bind.DatatypeConverter
            .parseHexBinary("02030101010203010101020303010102");
    private static byte[] galois_matrix_inv = javax.xml.bind.DatatypeConverter
            .parseHexBinary("0e0b0d09090e0b0d0d090e0b0b0d090e");

    protected static void mixColumns(byte[] input, boolean inv) {
        byte[] mixed = new byte[16];
        byte[] matrix;

        if (inv) {
            matrix = galois_matrix_inv;/*from  w  ww. j  av  a 2 s.  com*/
        } else {
            matrix = galois_matrix;
        }
        // column-matrix multiplication
        for (int i = 0; i < 16; i++) {
            byte sum = 0x0;
            for (int j = (i % 4) * 4, k = 0; j < ((i % 4) * 4) + 4; j++, k++) {
                switch (matrix[j]) {
                case 1:
                    sum ^= (input[((i / 4) * 4) + k] & 0xFF);
                    break;
                case 2:
                    sum ^= gm_2[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                case 3:
                    sum ^= gm_3[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                case 9:
                    sum ^= gm_9[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                case 11:
                    sum ^= gm_11[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                case 13:
                    sum ^= gm_13[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                case 14:
                    sum ^= gm_14[input[((i / 4) * 4) + k] & 0xFF];
                    break;
                }
            }
            mixed[i] = sum;
        }
    }
}

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