Method decrypt

src/main/java/com/thealgorithms/ciphers/AES.java:2717–2737

Decrypts the ciphertext with the key and returns the result @param cipherText The Encrypted text which we want to decrypt @return decryptedText

(BigInteger cipherText, BigInteger key)

     * @return decryptedText
     */
    public static BigInteger decrypt(BigInteger cipherText, BigInteger key) {
        BigInteger[] roundKeys = keyExpansion(key);

        // Invert final round
        cipherText = addRoundKey(cipherText, roundKeys[10]);
        cipherText = shiftRowsDec(cipherText);
        cipherText = subBytesDec(cipherText);

        // Invert main rounds
        for (int i = 9; i > 0; i--) {
            cipherText = addRoundKey(cipherText, roundKeys[i]);
            cipherText = mixColumnsDec(cipherText);
            cipherText = shiftRowsDec(cipherText);
            cipherText = subBytesDec(cipherText);
        }

        // Invert initial round
        cipherText = addRoundKey(cipherText, roundKeys[0]);

        return cipherText;
    }

    public static void main(String[] args) {
        try (Scanner input = new Scanner(System.in)) {