How Does Navicat Encrypt Password?

This repo will tell you how Navicat encrypts password and offer a tool to reveal passwords encrypted by Navicat.

1. What is Navicat?

Navicat is a series of graphical database management and development software produced by PremiumSoft CyberTech Ltd. for MySQL, MariaDB, Oracle, SQLite, PostgreSQL and Microsoft SQL Server.

It has an Explorer-like graphical user interface and supports multiple database connections for local and remote databases. Its design is made to meet the needs of a variety of audiences, from database administrators and programmers to various businesses/companies that serve clients and share information with partners.

2. What does indicate that Navicat encrypts password?

If you use Navicat to manage one of your databases, the first thing you should do is to create a connection to the database. So that means you should fill textboxes on the window showed below with the database's information like Host name, User name, Password and so on.

If you check "Save Password", after you click "Ok" button, Navicat will encrypt the password and then save the connection configuration, containing encrypted password, in Windows Registry. The exact path is showed below:

Database Type	Path
MySQL	HKEY_CURRENT_USER\Software\PremiumSoft\Navicat\Servers\`<your connection name>`
MariaDB	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatMARIADB\Servers\`<your connection name>`
MongoDB	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatMONGODB\Servers\`<your connection name>`
Microsoft SQL	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatMSSQL\Servers\`<your connection name>`
Oracle	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatOra\Servers\`<your connection name>`
PostgreSQL	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatPG\Servers\`<your connection name>`
SQLite	HKEY_CURRENT_USER\Software\PremiumSoft\NavicatSQLite\Servers\`<your connection name>`

The following is an example:

3. How does Navicat encrypt password?

See here.

4. How to use the sample code in python3 folder?

Please make sure that you have Python3.
Please make sure that you have pycryptodome module if you want to use NavicatCipher.py and NcxReader.py.

You can install pycryptodome module by command:
```
$ pip install pycryptodome
```
Please make sure that you have pypiwin32 module if you want to use ShowNavicat.py.

You can install pypiwin32 module by command:
```
$ pip install pypiwin32
```

NavicatCipher.py

Usage:
    NavicatCrypto.py <enc|dec> [-ncx] <plaintext|ciphertext>

    <enc|dec>                "enc" for encryption, "dec" for decryption.
                             This parameter must be specified.

    [-ncx]                   Indicate that plaintext/ciphertext is
                             prepared for/exported from NCX file.
                             This parameter is optional.

    <plaintext|ciphertext>   Plaintext string or ciphertext string.
                             NOTICE: Ciphertext string must be a hex string.
                             This parameter must be specified.

Example:

$ ./NavicatCipher.py enc "This is a test"
0EA71F51DD37BFB60CCBA219BE3A $ ./NavicatCipher.py dec 0EA71F51DD37BFB60CCBA219BE3A This is a test $ ./NavicatCipher.py enc -ncx "This is a test" B75D320B6211468D63EB3B67C9E85933 $ ./NavicatCipher.py dec -ncx B75D320B6211468D63EB3B67C9E85933 This is a test $ python3 Python 3.6.7 (default, Oct 22 2018, 11:32:17) [GCC 8.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from NavicatCipher import * >>> cipher = Navicat12Crypto() >>> cipher.EncryptString('This is a test') '0EA71F51DD37BFB60CCBA219BE3A' >>> cipher.DecryptString('0EA71F51DD37BFB60CCBA219BE3A') 'This is a test' >>> cipher.EncryptStringForNCX('This is a test') 'B75D320B6211468D63EB3B67C9E85933' >>> cipher.DecryptStringForNCX('B75D320B6211468D63EB3B67C9E85933') 'This is a test'

NcxReader.py

Show database servers' information inside *.ncx file.

Usage:
    NcxReader.py <Path to ncx file>

Example:

$ ./NcxReader ~/connectioms.ncx
-----------------xxxxxxxxxxxx--------------------
Connection Type  = MYSQL
Host = localhost Port = 3306 UserName = root Password = 12345678 ------------------yyyyyyyyyy--------------------- Connection Type = MYSQL Host = example.com Port = 3306 UserName = server Password = 0000000000 ... ... ...

ShowNavicat.py

Just run it in Windows. It will list all Navicat configurations inside Windows Registry.

Example:

>ShowNavicat.py
+--------------------------------------------------+
|                   MySQL Server                   |
+--------------------------------------------------+

Host: example.com Port: 3306 Username: server Password: 0000000000 ... ... +--------------------------------------------------+ | MariaDB Server | +--------------------------------------------------+ ... ... +--------------------------------------------------+ | MongoDB Server | +--------------------------------------------------+ ... ... ...

Blowfish.cs

using System;

namespace NavicatCrypto {
    class Blowfish {

        public enum Endian { Little, Big };
        public static readonly int MinUserKeyLength = 1;
        public static readonly int MaxUserKeyLength = 56;
        public static readonly int BlockSize = 8;

        private static readonly UInt32[] OriginPBox = new UInt32[] {
            0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344, 0xA4093822, 0x299F31D0,
            0x082EFA98, 0xEC4E6C89, 0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C,
            0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, 0xB5470917, 0x9216D5D9, 0x8979FB1B
        };

        private static readonly UInt32[,] OriginSBox = new UInt32[4, 256] {
             {
                0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7, 0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99, 0x24A19947, 0xB3916CF7, 0x0801F2E2, 0x858EFC16, 0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E,
                0x0D95748F, 0x728EB658, 0x718BCD58, 0x82154AEE, 0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013, 0xC5D1B023, 0x286085F0, 0xCA417918, 0xB8DB38EF, 0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E,
                0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60, 0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440, 0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE, 0xA15486AF, 0x7C72E993, 0xB3EE1411, 0x636FBC2A,
                0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E, 0xAFD6BA33, 0x6C24CF5C, 0x7A325381, 0x28958677, 0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193, 0x61D809CC, 0xFB21A991, 0x487CAC60, 0x5DEC8032,
                0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88, 0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239, 0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E, 0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0,
                0x6A51A0D2, 0xD8542F68, 0x960FA728, 0xAB5133A3, 0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98, 0xA1F1651D, 0x39AF0176, 0x66CA593E, 0x82430E88, 0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE,
                0xE06F75D8, 0x85C12073, 0x401A449F, 0x56C16AA6, 0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D, 0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B, 0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7,
                0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA, 0xC1A94FB6, 0x409F60C4, 0x5E5C9EC2, 0x196A2463, 0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F, 0x6DFC511F, 0x9B30952C, 0xCC814544, 0xAF5EBD09,
                0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3, 0xC0CBA857, 0x45C8740F, 0xD20B5F39, 0xB9D3FBDB, 0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279, 0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8,
                0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB, 0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82, 0x9E5C57BB, 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB, 0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573,
                0x695B27B0, 0xBBCA58C8, 0xE1FFA35D, 0xB8F011A0, 0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B, 0x9A53E479, 0xB6F84565, 0xD28E49BC, 0x4BFB9790, 0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8,
                0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4, 0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0, 0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7, 0x8FF6E2FB, 0xF2122B64, 0x8888B812, 0x900DF01C,
                0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD, 0x2F2F2218, 0xBE0E1777, 0xEA752DFE, 0x8B021FA1, 0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299, 0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81, 0xD2ADA8D9,
                0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477, 0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF, 0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49, 0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF,
                0x2464369B, 0xF009B91E, 0x5563911D, 0x59DFA6AA, 0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5, 0x83260376, 0x6295CFA9, 0x11C81968, 0x4E734A41, 0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915,
                0xD60F573F, 0xBC9BC6E4, 0x2B60A476, 0x81E67400, 0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915, 0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664, 0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A
            },

            {
                0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623, 0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266, 0xECAA8C71, 0x699A17FF, 0x5664526C, 0xC2B19EE1, 0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E,
                0x3F54989A, 0x5B429D65, 0x6B8FE4D6, 0x99F73FD6, 0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1, 0x4CDD2086, 0x8470EB26, 0x6382E9C6, 0x021ECC5E, 0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1,
                0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737, 0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8, 0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF, 0xAE0CF51A, 0x3CB574B2, 0x25837A58, 0xDC0921BD,
                0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701, 0x3AE5E581, 0x37C2DADC, 0xC8B57634, 0x9AF3DDA7, 0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41, 0xE238CD99, 0x3BEA0E2F, 0x3280BBA1, 0x183EB331,
                0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF, 0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF, 0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E, 0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87,
                0x7A584718, 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C, 0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2, 0xEF1C1847, 0x3215D908, 0xDD433B37, 0x24C2BA16, 0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD,
                0x71DFF89E, 0x10314E55, 0x81AC77D6, 0x5F11199B, 0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509, 0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E, 0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3,
                0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F, 0x803E89D6, 0x5266C825, 0x2E4CC978, 0x9C10B36A, 0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4, 0xF2F74EA7, 0x361D2B3D, 0x1939260F, 0x19C27960,
                0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66, 0xE3BC4595, 0xA67BC883, 0xB17F37D1, 0x018CFF28, 0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802, 0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84,
                0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510, 0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF, 0xB5735C90, 0x4C70A239, 0xD59E9E0B, 0xCBAADE14, 0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E,
                0x648B1EAF, 0x19BDF0CA, 0xA02369B9, 0x655ABB50, 0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7, 0x9B540B19, 0x875FA099, 0x95F7997E, 0x623D7DA8, 0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281,
                0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99, 0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696, 0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128, 0x58EBF2EF, 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73,
                0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0, 0x45EEE2B6, 0xA3AAABEA, 0xDB6C4F15, 0xFACB4FD0, 0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105, 0xD81E799E, 0x86854DC7, 0xE44B476A, 0x3D816250,
                0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3, 0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285, 0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00, 0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061,
                0x3372F092, 0x8D937E41, 0xD65FECF1, 0x6C223BDB, 0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E, 0xA6078084, 0x19F8509E, 0xE8EFD855, 0x61D99735, 0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC,
                0x9E447A2E, 0xC3453484, 0xFDD56705, 0x0E1E9EC9, 0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340, 0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20, 0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7
            },

            {
                0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934, 0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068, 0xD4082471, 0x3320F46A, 0x43B7D4B7, 0x500061AF, 0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840,
                0x4D95FC1D, 0x96B591AF, 0x70F4DDD3, 0x66A02F45, 0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504, 0x96EB27B3, 0x55FD3941, 0xDA2547E6, 0xABCA0A9A, 0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB,
                0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE, 0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6, 0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42, 0x20FE9E35, 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B,
                0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2, 0x3A6EFA74, 0xDD5B4332, 0x6841E7F7, 0xCA7820FB, 0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527, 0x55533A3A, 0x20838D87, 0xFE6BA9B7, 0xD096954B,
                0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33, 0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C, 0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3, 0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC,
                0x07F9C9EE, 0x41041F0F, 0x404779A4, 0x5D886E17, 0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564, 0x257B7834, 0x602A9C60, 0xDFF8E8A3, 0x1F636C1B, 0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115,
                0x6B2395E0, 0x333E92E1, 0x3B240B62, 0xEEBEB922, 0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728, 0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0, 0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E,
                0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37, 0xA812DC60, 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D, 0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804, 0xF1290DC7, 0xCC00FFA3, 0xB5390F92, 0x690FED0B,
                0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3, 0xBB132F88, 0x515BAD24, 0x7B9479BF, 0x763BD6EB, 0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D, 0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C,
                0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350, 0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9, 0x44421659, 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A, 0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE,
                0x9DBC8057, 0xF0F7C086, 0x60787BF8, 0x6003604D, 0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC, 0x83426B33, 0xF01EAB71, 0xB0804187, 0x3C005E5F, 0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61,
                0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2, 0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9, 0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2, 0x466E598E, 0x20B45770, 0x8CD55591, 0xC902DE4C,
                0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E, 0xB77F19B6, 0xE0A9DC09, 0x662D09A1, 0xC4324633, 0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10, 0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F, 0x2868F169,
                0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52, 0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027, 0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5, 0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62,
                0x11E69ED7, 0x2338EA63, 0x53C2DD94, 0xC2C21634, 0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76, 0x6F05E409, 0x4B7C0188, 0x39720A3D, 0x7C927C24, 0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC,
                0xED545578, 0x08FCA5B5, 0xD83D7CD3, 0x4DAD0FC4, 0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C, 0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837, 0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0
            },

            {
                0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B, 0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE, 0xD5118E9D, 0xBF0F7315, 0xD62D1C7E, 0xC700C47B, 0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4,
                0x5748AB2F, 0xBC946E79, 0xC6A376D2, 0x6549C2C8, 0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6, 0x2939BBDB, 0xA9BA4650, 0xAC9526E8, 0xBE5EE304, 0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22,
                0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4, 0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6, 0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9, 0xC72FEFD3, 0xF752F7DA, 0x3F046F69, 0x77FA0A59,
                0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593, 0xE990FD5A, 0x9E34D797, 0x2CF0B7D9, 0x022B8B51, 0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28, 0x1F9F25CF, 0xADF2B89B, 0x5AD6B472, 0x5A88F54C,
                0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B, 0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28, 0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C, 0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD,
                0xC3EB9E15, 0x3C9057A2, 0x97271AEC, 0xA93A072A, 0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319, 0x7533D928, 0xB155FDF5, 0x03563482, 0x8ABA3CBB, 0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F,
                0x4DE81751, 0x3830DC8E, 0x379D5862, 0x9320F991, 0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32, 0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680, 0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166,
                0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE, 0x5BBEF7DD, 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB, 0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5, 0x72EACEA8, 0xFA6484BB, 0x8D6612AE, 0xBF3C6F47,
                0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370, 0x740E0D8D, 0xE75B1357, 0xF8721671, 0xAF537D5D, 0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84, 0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048,
                0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8, 0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD, 0xA08839E1, 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9, 0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7,
                0x1A908749, 0xD44FBD9A, 0xD0DADECB, 0xD50ADA38, 0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F, 0xF79E59B7, 0x43F5BB3A, 0xF2D519FF, 0x27D9459C, 0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525,
                0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1, 0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442, 0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964, 0x9F1F9532, 0xE0D392DF, 0xD3A0342B, 0x8971F21E,
                0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8, 0xDF359F8D, 0x9B992F2E, 0xE60B6F47, 0x0FE3F11D, 0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F, 0x1618B166, 0xFD2C1D05, 0x848FD2C5, 0xF6FB2299,
                0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02, 0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC, 0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614, 0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A,
                0xC9AA53FD, 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6, 0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B, 0x53113EC0, 0x1640E3D3, 0x38ABBD60, 0x2547ADF0, 0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060,
                0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0, 0x4CF9AA7E, 0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9, 0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F, 0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6
            }
        };

        private UInt32[] SubKey;
        private UInt32[,] SBox;

        private UInt32 _F_Transform(UInt32 x) {
            byte[] x_bytes = BitConverter.GetBytes(x);
            if (BitConverter.IsLittleEndian == false)
                Array.Reverse(x_bytes);
            return ((SBox[0, x_bytes[3]] + SBox[1, x_bytes[2]]) ^ SBox[2, x_bytes[1]]) +SBox[3, x_bytes[0]];
        }

        public void Encrypt(byte[] srcBytes, Endian endian) {
            byte[] L_bytes = new byte[4];
            byte[] R_bytes = new byte[4];
            Array.Copy(srcBytes, 0, L_bytes, 0, 4);
            Array.Copy(srcBytes, 4, R_bytes, 0, 4);

            if (BitConverter.IsLittleEndian && endian == Endian.Big || BitConverter.IsLittleEndian == false && endian == Endian.Little) {
                Array.Reverse(L_bytes);
                Array.Reverse(R_bytes);
            }

            UInt32 L = BitConverter.ToUInt32(L_bytes, 0);
            UInt32 R = BitConverter.ToUInt32(R_bytes, 0);

            L ^= SubKey[0];
            R ^= _F_Transform(L);

            R ^= SubKey[1];
            L ^= _F_Transform(R);

            L ^= SubKey[2];
            R ^= _F_Transform(L);

            R ^= SubKey[3];
            L ^= _F_Transform(R);

            L ^= SubKey[4];
            R ^= _F_Transform(L);

            R ^= SubKey[5];
            L ^= _F_Transform(R);

            L ^= SubKey[6];
            R ^= _F_Transform(L);

            R ^= SubKey[7];
            L ^= _F_Transform(R);

            L ^= SubKey[8];
            R ^= _F_Transform(L);

            R ^= SubKey[9];
            L ^= _F_Transform(R);

            L ^= SubKey[10];
            R ^= _F_Transform(L);

            R ^= SubKey[11];
            L ^= _F_Transform(R);

            L ^= SubKey[12];
            R ^= _F_Transform(L);

            R ^= SubKey[13];
            L ^= _F_Transform(R);

            L ^= SubKey[14];
            R ^= _F_Transform(L);

            R ^= SubKey[15];
            L ^= _F_Transform(R);

            L ^= SubKey[16];
            R ^= SubKey[17];

            L_bytes = BitConverter.GetBytes(R);
            R_bytes = BitConverter.GetBytes(L);

            if (BitConverter.IsLittleEndian && endian == Endian.Big || BitConverter.IsLittleEndian == false && endian == Endian.Little) {
                Array.Reverse(L_bytes);
                Array.Reverse(R_bytes);
            }

            Array.Copy(L_bytes, 0, srcBytes, 0, 4);
            Array.Copy(R_bytes, 0, srcBytes, 4, 4);
        }

        public void Decrypt(byte[] srcBytes, Endian endian) {
            byte[] L_bytes = new byte[4];
            byte[] R_bytes = new byte[4];
            Array.Copy(srcBytes, 0, L_bytes, 0, 4);
            Array.Copy(srcBytes, 4, R_bytes, 0, 4);

            if (BitConverter.IsLittleEndian && endian == Endian.Big || BitConverter.IsLittleEndian == false && endian == Endian.Little) {
                Array.Reverse(L_bytes);
                Array.Reverse(R_bytes);
            }

            UInt32 L = BitConverter.ToUInt32(R_bytes, 0);
            UInt32 R = BitConverter.ToUInt32(L_bytes, 0);

            L ^= SubKey[16];
            R ^= SubKey[17];

            L ^= _F_Transform(R);
            R ^= SubKey[15];

            R ^= _F_Transform(L);
            L ^= SubKey[14];

            L ^= _F_Transform(R);
            R ^= SubKey[13];

            R ^= _F_Transform(L);
            L ^= SubKey[12];

            L ^= _F_Transform(R);
            R ^= SubKey[11];

            R ^= _F_Transform(L);
            L ^= SubKey[10];

            L ^= _F_Transform(R);
            R ^= SubKey[9];

            R ^= _F_Transform(L);
            L ^= SubKey[8];

            L ^= _F_Transform(R);
            R ^= SubKey[7];

            R ^= _F_Transform(L);
            L ^= SubKey[6];

            L ^= _F_Transform(R);
            R ^= SubKey[5];

            R ^= _F_Transform(L);
            L ^= SubKey[4];

            L ^= _F_Transform(R);
            R ^= SubKey[3];

            R ^= _F_Transform(L);
            L ^= SubKey[2];

            L ^= _F_Transform(R);
            R ^= SubKey[1];

            R ^= _F_Transform(L);
            L ^= SubKey[0];

            L_bytes = BitConverter.GetBytes(L);
            R_bytes = BitConverter.GetBytes(R);

            if (BitConverter.IsLittleEndian && endian == Endian.Big || BitConverter.IsLittleEndian == false && endian == Endian.Little) {
                Array.Reverse(L_bytes);
                Array.Reverse(R_bytes);
            }

            Array.Copy(L_bytes, 0, srcBytes, 0, 4);
            Array.Copy(R_bytes, 0, srcBytes, 4, 4);
        }

        public Blowfish(byte[] UserKey) {
            if (UserKey.Length < MinUserKeyLength)
                throw new ArgumentException("UserKey is too short.");
            else if (UserKey.Length > 56)
                throw new ArgumentException("UserKey is too long.");


            SubKey = OriginPBox.Clone() as UInt32[];
            SBox = OriginSBox.Clone() as UInt32[,];

            for (int i = 0; i < 18; ++i) {
                UInt32 temp = 0;

                temp <<= 8;
                temp |= UserKey[(i * 4) % UserKey.Length];
                temp <<= 8;
                temp |= UserKey[(i * 4 + 1) % UserKey.Length];
                temp <<= 8;
                temp |= UserKey[(i * 4 + 2) % UserKey.Length];
                temp <<= 8;
                temp |= UserKey[(i * 4 + 3) % UserKey.Length];

                SubKey[i] ^= temp;
            }

            byte[] _temp = new byte[8];
            for (int i = 0; i < 9; ++i) {
                Encrypt(_temp, Endian.Little);
                Buffer.BlockCopy(_temp, 0, SubKey, sizeof(UInt32) * 2 * i, 8);
            }

            for (int i = 0; i < 4; ++i) {
                for (int j = 0; j < 128; ++j) {
                    Encrypt(_temp, Endian.Little);
                    Buffer.BlockCopy(_temp, 0, SBox, 256 * sizeof(UInt32) * i + sizeof(UInt64) * j, sizeof(UInt64));
                }
            }
        }



    }
}

NavicatCrypto.cs

using System;
using System.Linq;
using System.Text;
using System.IO;
using System.Security.Cryptography;

namespace NavicatCrypto {
    class Navicat11Cipher {

        private Blowfish blowfishCipher;

        protected static byte[] StringToByteArray(string hex) {
            return Enumerable.Range(0, hex.Length)
                             .Where(x => x % 2 == 0)
                             .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                             .ToArray();
        }

        protected static string ByteArrayToString(byte[] bytes) {
            return BitConverter.ToString(bytes).Replace("-", string.Empty);
        }

        protected static void XorBytes(byte[] a, byte[] b, int len) {
            for (int i = 0; i < len; ++i)
                a[i] ^= b[i];
        }

        public Navicat11Cipher() {
            byte[] UserKey = Encoding.UTF8.GetBytes("3DC5CA39");
            var sha1 = new SHA1CryptoServiceProvider();
            sha1.TransformFinalBlock(UserKey, 0, UserKey.Length);
            blowfishCipher = new Blowfish(sha1.Hash);
        }

        public Navicat11Cipher(string CustomUserKey) {
            byte[] UserKey = Encoding.UTF8.GetBytes(CustomUserKey);
            var sha1 = new SHA1CryptoServiceProvider();
            byte[] UserKeyHash = sha1.TransformFinalBlock(UserKey, 0, 8);
            blowfishCipher = new Blowfish(UserKeyHash);
        }

        public string EncryptString(string plaintext) {
            byte[] plaintext_bytes = Encoding.UTF8.GetBytes(plaintext);

            byte[] CV = Enumerable.Repeat<byte>(0xFF, Blowfish.BlockSize).ToArray();
            blowfishCipher.Encrypt(CV, Blowfish.Endian.Big);

            string ret = "";
            int blocks_len = plaintext_bytes.Length / Blowfish.BlockSize;
            int left_len = plaintext_bytes.Length % Blowfish.BlockSize;
            byte[] temp = new byte[Blowfish.BlockSize];
            for (int i = 0; i < blocks_len; ++i) {
                Array.Copy(plaintext_bytes, Blowfish.BlockSize * i, temp, 0, Blowfish.BlockSize);
                XorBytes(temp, CV, Blowfish.BlockSize);
                blowfishCipher.Encrypt(temp, Blowfish.Endian.Big);
                XorBytes(CV, temp, Blowfish.BlockSize);

                ret += ByteArrayToString(temp);
            }

            if (left_len != 0) {
                blowfishCipher.Encrypt(CV, Blowfish.Endian.Big);
                XorBytes(CV,
                         plaintext_bytes.Skip(blocks_len * Blowfish.BlockSize).Take(left_len).ToArray(),
                         left_len);
                ret += ByteArrayToString(CV.Take(left_len).ToArray());
            }

            return ret;
        }

        public string DecryptString(string ciphertext) {
            byte[] ciphertext_bytes = StringToByteArray(ciphertext);

            byte[] CV = Enumerable.Repeat<byte>(0xFF, Blowfish.BlockSize).ToArray();
            blowfishCipher.Encrypt(CV, Blowfish.Endian.Big);

            byte[] ret = new byte[0];
            int blocks_len = ciphertext_bytes.Length / Blowfish.BlockSize;
            int left_len = ciphertext_bytes.Length % Blowfish.BlockSize;
            byte[] temp = new byte[Blowfish.BlockSize];
            byte[] temp2 = new byte[Blowfish.BlockSize];
            for (int i = 0; i < blocks_len; ++i) {
                Array.Copy(ciphertext_bytes, Blowfish.BlockSize * i, temp, 0, Blowfish.BlockSize);
                Array.Copy(temp, temp2, Blowfish.BlockSize);
                blowfishCipher.Decrypt(temp, Blowfish.Endian.Big);
                XorBytes(temp, CV, Blowfish.BlockSize);
                ret = ret.Concat(temp).ToArray();
                XorBytes(CV, temp2, Blowfish.BlockSize);
            }

            if (left_len != 0) {
                Array.Clear(temp, 0, temp.Length);
                Array.Copy(ciphertext_bytes, Blowfish.BlockSize * blocks_len, temp, 0, left_len);
                blowfishCipher.Encrypt(CV, Blowfish.Endian.Big);
                XorBytes(temp, CV, Blowfish.BlockSize);
                ret = ret.Concat(temp.Take(left_len).ToArray()).ToArray();
            }

            return Encoding.UTF8.GetString(ret);
        }
    }

    class Navicat12Cipher : Navicat11Cipher {

        private AesCryptoServiceProvider AesServiceProvider;

        public Navicat12Cipher() : base() {
            AesServiceProvider = new AesCryptoServiceProvider();
            AesServiceProvider.KeySize = 128;
            AesServiceProvider.Mode = CipherMode.CBC;
            AesServiceProvider.Padding = PaddingMode.PKCS7;

            AesServiceProvider.Key = Encoding.UTF8.GetBytes("libcckeylibcckey");
            AesServiceProvider.IV = Encoding.UTF8.GetBytes("libcciv libcciv ");
        }

        public string EncryptStringForNCX(string plaintext) {
            ICryptoTransform AesEncryptor = AesServiceProvider.CreateEncryptor();
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, AesEncryptor, CryptoStreamMode.Write);
            byte[] plaintext_bytes = Encoding.UTF8.GetBytes(plaintext);
            cs.Write(plaintext_bytes, 0, plaintext_bytes.Length);
            cs.FlushFinalBlock();
            return ByteArrayToString(ms.ToArray());
        }

        public string DecryptStringForNCX(string ciphertext) {
            ICryptoTransform AesDecryptor = AesServiceProvider.CreateDecryptor();
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, AesDecryptor, CryptoStreamMode.Write);
            byte[] ciphertext_bytes = StringToByteArray(ciphertext);
            cs.Write(ciphertext_bytes, 0, ciphertext_bytes.Length);
            cs.FlushFinalBlock();
            return Encoding.UTF8.GetString(ms.ToArray());
        }

    }
}