}
}

func TestMod(t *testing.T) {
	m := modulusFromBytes([]byte{0x06, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d})
	x := natFromBytes([]byte{0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01})
	out := new(Nat)
	out.Mod(x, m)
	expected := natFromBytes([]byte{0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09})
	if out.Equal(expected) != 1 {
		t.Errorf("%+v != %+v", out, expected)
	}

        dst[dstIndex + OPCODE_OFFSET] = (byte)(( isResponse ? 0x80 : 0x00 ) +
                        (( opCode << 3 ) & 0x78 ) +
                        ( isAuthAnswer ? 0x04 : 0x00 ) +
                        ( isTruncated ? 0x02 : 0x00 ) +
                        ( isRecurDesired ? 0x01 : 0x00 ));
        dst[dstIndex + OPCODE_OFFSET + 1] = (byte)(( isRecurAvailable ? 0x80 : 0x00 ) +
                        ( isBroadcast ? 0x10 : 0x00 ) +

                + ( this.isAuthAnswer ? 0x04 : 0x00 ) + ( this.isTruncated ? 0x02 : 0x00 ) + ( this.isRecurDesired ? 0x01 : 0x00 ) );
        dst[ dstIndex + OPCODE_OFFSET
                + 1 ] = (byte) ( ( this.isRecurAvailable ? 0x80 : 0x00 ) + ( this.isBroadcast ? 0x10 : 0x00 ) + ( this.resultCode & 0x0F ) );

			0x87, 0x4d, 0x61, 0x91, 0xb6, 0x20, 0xe3, 0x26, 0x1b, 0xef, 0x68, 0x64, 0x99, 0x0d, 0xb6, 0xce,
			0x98, 0x06, 0xf6, 0x6b, 0x79, 0x70, 0xfd, 0xff, 0x86, 0x17, 0x18, 0x7b, 0xb9, 0xff, 0xfd, 0xff,
			0x5a, 0xe4, 0xdf, 0x3e, 0xdb, 0xd5, 0xd3, 0x5e, 0x5b, 0x4f, 0x09, 0x02, 0x0d, 0xb0, 0x3e, 0xab,
			0x1e, 0x03, 0x1d, 0xda, 0x2f, 0xbe, 0x03, 0xd1, 0x79, 0x21, 0x70, 0xa0, 0xf3, 0x00, 0x9c, 0xee,
		},
	},
	{
		"CTR-AES192",
		commonKey192,

	msg := []byte{
		0x85, 0x9e, 0xef, 0x2f, 0xd7, 0x8a, 0xca, 0x00, 0x30, 0x8b,
		0xdc, 0x47, 0x11, 0x93, 0xbf, 0x55, 0xbf, 0x9d, 0x78, 0xdb,
		0x8f, 0x8a, 0x67, 0x2b, 0x48, 0x46, 0x34, 0xf3, 0xc9, 0xc2,
		0x6e, 0x64, 0x78, 0xae, 0x10, 0x26, 0x0f, 0xe0, 0xdd, 0x8c,
		0x08, 0x2e, 0x53, 0xa5, 0x29, 0x3a, 0xf2, 0x17, 0x3c, 0xd5,
		0x0c, 0x6d, 0x5d, 0x35, 0x4f, 0xeb, 0xf7, 0x8b, 0x26, 0x02,
		0x1c, 0x25, 0xc0, 0x27, 0x12, 0xe7, 0x8c, 0xd4, 0x69, 0x4c,

	//   https://groups.google.com/group/sci.crypt/msg/10a300c9d21afca0?pli=1
	{
		[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
		[]byte{0x74, 0x94, 0xc2, 0xe7, 0x10, 0x4b, 0x08, 0x79},
	},
	{
		[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
		[]byte{0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a},
	},
	{
		[]byte{0xef, 0x01, 0x23, 0x45},
		[]byte{0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf, 0xbd, 0x61},
	},

	// 476 bytes of a gzipped FileDescriptorProto
	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x93, 0x3f, 0x8f, 0xd3, 0x30,
	0x18, 0xc6, 0xe3, 0x1e, 0x91, 0x8a, 0xab, 0x4a, 0x25, 0x08, 0x29, 0xea, 0xe0, 0x46, 0xbd, 0x81,
	0x2c, 0xd8, 0xf4, 0x04, 0x08, 0xe9, 0x24, 0x86, 0x70, 0x12, 0x42, 0x3a, 0x44, 0x95, 0x81, 0x01,
	0x31, 0xe0, 0xa6, 0x3e, 0xd7, 0x34, 0x89, 0x23, 0xdb, 0xa9, 0xd4, 0x8d, 0x8f, 0xc0, 0x37, 0x62,

	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x56, 0x4f, 0x6f, 0x1b, 0x45,
	0x14, 0xf7, 0xc6, 0x7f, 0x62, 0x8f, 0x43, 0xda, 0x8e, 0xa0, 0x5a, 0x2c, 0xd5, 0x6b, 0xad, 0xa0,
	0x0a, 0x15, 0xcc, 0x92, 0xa8, 0x40, 0x28, 0x08, 0xa1, 0x4d, 0x23, 0x54, 0x91, 0x82, 0x34, 0x49,
	0x38, 0x14, 0x0e, 0x9d, 0xac, 0x5f, 0x37, 0xd3, 0x74, 0xff, 0xb0, 0x33, 0x6b, 0xd5, 0xb7, 0x7e,

	// 947 bytes of a gzipped FileDescriptorProto
	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x56, 0x4b, 0x6f, 0x23, 0xc5,
	0x13, 0xf7, 0xf8, 0x11, 0xd9, 0xe5, 0x4d, 0xfe, 0x49, 0xef, 0x7f, 0x85, 0x15, 0x16, 0x4f, 0x98,
	0x95, 0x50, 0x04, 0xbb, 0x33, 0x1b, 0x8b, 0xc7, 0x6a, 0x91, 0x90, 0x32, 0xc4, 0x02, 0x0b, 0xc1,
	0xae, 0xda, 0x49, 0x40, 0x48, 0x48, 0xb4, 0xc7, 0x1d, 0xa7, 0xf1, 0xce, 0x83, 0x99, 0x1e, 0xb3,

	// 840 bytes of a gzipped FileDescriptorProto
	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x96, 0x4d, 0x8f, 0xdb, 0x44,
	0x18, 0xc7, 0xe3, 0xcd, 0x66, 0xd9, 0x4e, 0x93, 0x68, 0x19, 0x16, 0x58, 0x72, 0x70, 0xaa, 0x88,
	0xc3, 0x82, 0xd4, 0x31, 0xdb, 0x22, 0xb4, 0xea, 0x01, 0xb5, 0x6e, 0x56, 0x50, 0xd4, 0x25, 0xab,
	0xd9, 0x56, 0x48, 0x08, 0x24, 0x26, 0xf6, 0xd3, 0x64, 0x58, 0xdb, 0x63, 0x79, 0xc6, 0xa1, 0x39,