Decrypt Adobe Acrobat Keys

public static String decrypt(String encryptedKey) {
    String[] AdobeCipher = { "0000000001", "5038647192", "1456053789", "2604371895", "4753896210", "8145962073",
            "0319728564", "7901235846", "7901235846", "0319728564", "8145962073", "4753896210", "2604371895",
            "1426053789", "5038647192", "3267408951", "5038647192", "2604371895", "8145962073", "7901235846",
            "3267408951", "1426053789", "4753896210", "0319728564" };

    String sAdobeDecryptedKey = "";
    for (int i = 0; i < 24; i++) {
        if (i % 4 == 0 && i > 0)
            sAdobeDecryptedKey += '-';
        String ndx=encryptedKey.substring(i, i+1);
        int tmp=Integer.parseInt(ndx);
        sAdobeDecryptedKey += AdobeCipher[i].substring(tmp, tmp+1);
    }
    return sAdobeDecryptedKey;
}