private static EncTypeHandler getEncHandler()

in kerby-kerb/kerb-crypto/src/main/java/org/apache/kerby/kerberos/kerb/crypto/EncryptionHandler.java [101:171]
55 lines of code
25 McCabe index (conditional complexity)

    private static EncTypeHandler getEncHandler(EncryptionType eType,
                                                boolean check) throws KrbException {
        EncTypeHandler encHandler = null;

        /**
         * Ref. etypes.c in MIT krb5 project.
         */
        switch (eType) {
            case DES_CBC_CRC:
                encHandler = new DesCbcCrcEnc();
                break;

            case DES_CBC_MD5:
            case DES:
                encHandler = new DesCbcMd5Enc();
                break;

            case DES_CBC_MD4:
                encHandler = new DesCbcMd4Enc();
                break;

            case DES3_CBC_SHA1:
            case DES3_CBC_SHA1_KD:
            case DES3_HMAC_SHA1:
                encHandler = new Des3CbcSha1Enc();
                break;

            case AES128_CTS_HMAC_SHA1_96:
            case AES128_CTS:
                encHandler = new Aes128CtsHmacSha1Enc();
                break;

            case AES256_CTS_HMAC_SHA1_96:
            case AES256_CTS:
                encHandler = new Aes256CtsHmacSha1Enc();
                break;

            case CAMELLIA128_CTS_CMAC:
            case CAMELLIA128_CTS:
                encHandler = new Camellia128CtsCmacEnc();
                break;

            case CAMELLIA256_CTS_CMAC:
            case CAMELLIA256_CTS:
                encHandler = new Camellia256CtsCmacEnc();
                break;

            case RC4_HMAC:
            case ARCFOUR_HMAC:
            case ARCFOUR_HMAC_MD5:
                encHandler = new Rc4HmacEnc();
                break;

            case RC4_HMAC_EXP:
            case ARCFOUR_HMAC_EXP:
            case ARCFOUR_HMAC_MD5_EXP:
                encHandler = new Rc4HmacExpEnc();
                break;

            case NONE:
            default:
                break;
        }

        if (encHandler == null && !check) {
            String message = "Unsupported encryption type: " + eType.name();
            throw new KrbException(KrbErrorCode.KDC_ERR_ETYPE_NOSUPP, message);
        }

        return encHandler;
    }