KDE Wallet Manager
KWallet Interface.PNG
Stable release
21.12.3 2022-03-03
Written inMainly C++ (Qt), some C
Operating systemCross-platform
LicenseVarious LGPL[a]

KDE Wallet manager (KWallet) is free and open-source password management software written in C++ for UNIX-style operating systems. KDE Wallet Manager runs on a Linux-based OS and Its main feature is storing encrypted passwords in KDE Wallets.[1] The main feature of KDE wallet manager (KWallet) is to collect user's credentials such as passwords or IDs and encrypt them through Blowfish symmetric block cipher algorithm or GNU Privacy Guard encryption.


KDE Wallet Manager (KWallet) requires a Linux-based OS and the KDE Software Compilation desktop environment such as Kubuntu.[2]

Browser extensions

KDE Wallet manager (KWallet) can be integrated with various web browsers including Chrome, Firefox, Opera, and Edge.

To use KDE Wallet manager (KWallet) intergration on Goole Chrome or Chromium, user needs to run a program with argument --password-store=kwallet5 or --password-store=detect .[3]

A standalone add-on is also available in Firefox. This addon allows users to store passwords internally through KDE Wallet manager (KWallet) instead of the default Firefox password manager.

Konqueror, the official web browser of the K Desktop Environment (KDE) features KDE Wallet manager (KWallet) to store sensitive passwords encrypted.

Example code to retrieve data from the KWallet

int main()
 int rc;
 DCOPClient* dc = new DCOPClient();
 if ( ! dc->attach() )
 fprintf(stderr, "DCOP Attach Failed");
 return 16;
 KWallet::Wallet* wallet = KWallet::Wallet::openWallet("test-wallet");
 if ( wallet == NULL )
 printf( "Open Wallet Failed\n" );
 return 17;
 if ( ! wallet->hasFolder("Passwords") )
 return 18;
 if( 0==wallet->setFolder("Passwords") )
 return 20;
 QString s = QString();
 rc = wallet->readPassword( "test", s );
 if ( rc == 0 )
 printf( "-->%s<--\n", s.ascii() );
 return 0;



KDE Wallet Manager’s APIs trigger authentication events when the application makes a request through Desktop Communications protocol (DCOP), which is KDE’s primary interprocess communication (IPC) mechanism, which causes a password dialog box to be displayed for the application. This causes the password dialog box to be launched by the KDE daemon process. Users can choose either to cancel the dialog box which will terminate the application or to fill the password box in. If the password box is filled, the Wallet will automatically open. KDE Wallet Manager’s Desktop communications protocol (DCOP) can only be accessed locally because it is an interprocess communication (IPC) protocol that is processed over UNIX local sockets.[4]


On KDE Wallet Manager’s GUI, users can manage every wallet and password assigned to them.

KDE Wallet Manager allows users to save or delete Wallets and users can identify which wallet applications should look in when attempting to access a stored password.[4]

These are the lists of actions that users can take on the GUI of KDE Wallet manager (KWallet):


Managing Wallets in KWallet.
Managing Wallets in KWallet.

The Wallet is a term for password storage used in KDE Wallet Manager software. Wallets can be created manually by the user or It is offered by dialogue when the user enters in a password on any KDE desktop environment or website. Once created, Wallet can store various passwords and It is controlled by one master password. This way users do not have to remember various passwords, instead, they can just manage them by memorizing one master password for the wallet. The default Wallet is named “kdewallet” and users can create more of their own if needed.

Managing wallets

Users can manage wallets on their own KDE Wallet Manager window. Packaging or combining wallets can be done by dragging and dropping. If the user wants to export information to other locations such as flash drives, the window allows for the user to choose whether to export data encrypted or not. Providing the master password, the user can similarly import the data encrypted.

Setting preference of wallets is also possible, user can set certain wallets to be the default wallet. The close wallet setting enables the user to close the wallet after:

Encryption of the password

The data stored by the KDE Wallet manager can be encrypted in two major ways. The GNU Privacy Guard (GnuPG or GPG) algorithm is used if GnuPG Made Easy library is installed on the user’s Linux-based OS. If not, Blowfish symmetric block cipher algorithm is used.[5]

The encryption methods of KWallet.
The encryption methods of KWallet.

Blowfish symmetric block cipher algorithm

Blowfish source code written in C++
/********** blowfish.h **********/

#ifndef ___BLOWFISH_H___
#define ___BLOWFISH_H___

#define NUM_SUBKEYS  18
#define NUM_S_BOXES  4
#define NUM_ENTRIES  256

#define MAX_STRING   256
#define MAX_PASSWD   56  // 448bits

// #define BIG_ENDIAN
// #define LITTLE_ENDIAN

struct WordByte
	unsigned int zero:8;
	unsigned int one:8;
	unsigned int two:8;
	unsigned int three:8;

struct WordByte
	unsigned int three:8;
	unsigned int two:8;
	unsigned int one:8;
	unsigned int zero:8;

union Word
	unsigned int word;
	WordByte byte;

struct DWord
	Word word0;
	Word word1;

class Blowfish
  unsigned int PA[NUM_SUBKEYS];
  unsigned int SB[NUM_S_BOXES][NUM_ENTRIES];

  void Gen_Subkeys(char *);
  inline void BF_En(Word *,Word *);
  inline void BF_De(Word *,Word *);


  void Reset();
  void Set_Passwd(char * = NULL);
  void Encrypt(void *,unsigned int);
  void Decrypt(void *,unsigned int);


/********** blowfish.cc **********/

#include <iostream.h>
#include <string.h>
#include "blowfish.h"

#define F(x)    (((SB[0][x.byte.zero] + SB[1][x.byte.one]) ^ SB[2][x.byte.two]) +

void Blowfish::Gen_Subkeys(char *Passwd)
  unsigned int i,j,len=strlen(Passwd);
  Word Work,null0,null1;

  if (len > 0)
	j = 0;
    for (i=0;i<NUM_SUBKEYS;i++)
	Work.byte.zero = Passwd[(j++)%len];
	Work.byte.one = Passwd[(j++)%len];
	Work.byte.two = Passwd[(j++)%len];
			Work.byte.three = Passwd[(j++)%len];
			PA[i] ^= Work.word;

	null0.word = null1.word = 0;
    for (i=0;i<NUM_SUBKEYS;i+=2)
		PA[i] = null0.word;
			PA[i+1] = null1.word;

    for (j=0;j<NUM_S_BOXES;j++)
			for (i=0;i<NUM_ENTRIES;i+=2)
		SB[j][i] = null0.word;
		SB[j][i+1] = null1.word;

   Work.word = null0.word = null1.word = 0;
   Passwd = NULL;
   len = 0;

void Blowfish::BF_En(Word *x1,Word *x2)
  Word w1=*x1,w2=*x2;

  w1.word ^= PA[0];
  w2.word ^= F(w1)^PA[1];       w1.word ^= F(w2)^PA[2];
  w2.word ^= F(w1)^PA[3];       w1.word ^= F(w2)^PA[4];
  w2.word ^= F(w1)^PA[5];       w1.word ^= F(w2)^PA[6];
  w2.word ^= F(w1)^PA[7];       w1.word ^= F(w2)^PA[8];
  w2.word ^= F(w1)^PA[9];       w1.word ^= F(w2)^PA[10];
  w2.word ^= F(w1)^PA[11];      w1.word ^= F(w2)^PA[12];
  w2.word ^= F(w1)^PA[13];      w1.word ^= F(w2)^PA[14];
  w2.word ^= F(w1)^PA[15];      w1.word ^= F(w2)^PA[16];
  w2.word ^= PA[17];

  *x1 = w2;
  *x2 = w1;

void Blowfish::BF_De(Word *x1,Word *x2)
  Word w1=*x1,w2=*x2;

  w1.word ^= PA[17];
  w2.word ^= F(w1)^PA[16];      w1.word ^= F(w2)^PA[15];
  w2.word ^= F(w1)^PA[14];      w1.word ^= F(w2)^PA[13];
  w2.word ^= F(w1)^PA[12];      w1.word ^= F(w2)^PA[11];
  w2.word ^= F(w1)^PA[10];      w1.word ^= F(w2)^PA[9];
  w2.word ^= F(w1)^PA[8];       w1.word ^= F(w2)^PA[7];
  w2.word ^= F(w1)^PA[6];       w1.word ^= F(w2)^PA[5];
  w2.word ^= F(w1)^PA[4];       w1.word ^= F(w2)^PA[3];
  w2.word ^= F(w1)^PA[2];       w1.word ^= F(w2)^PA[1];
  w2.word ^= PA[0];

  *x1 = w2;
  *x2 = w1;



void Blowfish::Reset()
  unsigned int i,j;

  unsigned int PA_Init[NUM_SUBKEYS] =
    0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
    0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
    0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
    0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
    0x9216d5d9, 0x8979fb1b

  unsigned int SB_Init[NUM_S_BOXES][NUM_ENTRIES] =
    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

  for (i=0;i<NUM_SUBKEYS;i++)
    PA[i] = PA_Init[i];

  for (j=0;j<NUM_S_BOXES;j++)
    for (i=0;i<NUM_ENTRIES;i++)
      SB[j][i] = SB_Init[j][i];

void Blowfish::Set_Passwd(char *Passwd)
  char New_Passwd[MAX_STRING];
  unsigned int i,len;

	if (Passwd == NULL)
	cout << "\aEnter your password: ";
	len = strlen(New_Passwd);
	while (len > MAX_PASSWD);
	Passwd = New_Passwd;
	len = strlen(Passwd);

  if (len > 0)

  for (i=0;i<MAX_STRING;i++)
    New_Passwd[i] = '\0';
   Passwd = NULL;
   len = 0;

void Blowfish::Encrypt(void *Ptr,unsigned int N_Bytes)
  unsigned int i;
  DWord *Work;

  if (N_Bytes%8)
    cerr << "\aBlowfish requires the input to be a multiple of 8 bytes (64
bits) to work.\n";

	N_Bytes /= 8;
  Work = (DWord *)Ptr;

  for (i=0;i<N_Bytes;i++)

  Work = NULL;

void Blowfish::Decrypt(void *Ptr,unsigned int N_Bytes)
  unsigned int i;
  DWord *Work;

  if (N_Bytes%8)
    cerr << "\aBlowfish requires the input to be a multiple of 8 bytes (64
bits) to work.\n";

	N_Bytes /= 8;
  Work = (DWord *)Ptr;
  for (i=0;i<N_Bytes;i++)

  Work = NULL;

/********* BFtest.cc **********/
#include <stdio.h>
#include <iostream.h>
#include <stdlib.h>
#include <time.h>
#include "blowfish.h"

#define BUFF_SIZE 1048576  // 1MB
#define NUM_TRIALS 100

int Test(Blowfish *);
double Speed(Blowfish *);

void main()
	int result;
	double speed;
	Blowfish BF;

	cout << "Blowfish verification: ";
	if (result = Test(&BF))
		cout << "\aFailed " << (result>0?"en":"de") << "crypting test vector " <<
abs(result) << endl;
		cout << "Passed" << endl;

	if ((speed = Speed(&BF)) <= 0)
		cout << "Not enough time elapsed for the test, or something funny happend." <<
		cout << "The throughput is " << speed << "MB/s" << endl;

int Test(Blowfish *BF)
	unsigned int i;
	DWord Test_Vect;
	char *Passwd[2] = {"abcdefghijklmnopqrstuvwxyz","Who is John Galt?"};
	unsigned int Clr0[2] = {0x424c4f57,0xfedcba98};
	unsigned int Clr1[2] = {0x46495348,0x76543210};
	unsigned int Crypt0[2] = {0x324ed0fe,0xcc91732b};
	unsigned int Crypt1[2] = {0xf413a203,0x8022f684};
	for (i=0;i<2;i++)
		Test_Vect.word0.word = Clr0[i];
		Test_Vect.word1.word = Clr1[i];
		BF->Encrypt((void *)&Test_Vect,8);
		if (Test_Vect.word0.word != Crypt0[i] || Test_Vect.word1.word != Crypt1[i])
			return (i+1);
		BF->Decrypt((void *)&Test_Vect,8);
		if (Test_Vect.word0.word != Clr0[i] || Test_Vect.word1.word != Clr1[i])
			return -(i+1);
	return 0;

double Speed(Blowfish *BF)
	char *buff;
	unsigned int i;
	time_t begin,end;

	buff = new char[BUFF_SIZE];
	if (buff == NULL)
		cerr << "\aRan out of memory for the test buffer\n";
		return 0;
	for (i=0;i<BUFF_SIZE;i++)
		buff[i] = rand()%256;

	begin = time(NULL);
	for (i=0;i<NUM_TRIALS;i++)
		BF->Encrypt((void *)buff,BUFF_SIZE);
	end = time(NULL);

	delete []buff;
	if (end-begin < 10)
		return 0;
		return double(NUM_TRIALS)/(end-begin);

KDE Wallet manager encrypts the data stored in the wallet using the Blowfish symmetric block cipher algorithm in CBC mode. To protect the user’s information, blowfish encrypted data is authenticated with the SHA-1 hashing algorithm.

KDE Wallet manager’s blowfish encryption provides faster encryption compared to Khufu, RC5, DES, IDEA, and Trip-DES. Blowfish encrypts at a rate of 18 clock cycles per byte in 32-bit microprocessors.

KDE Wallet manager’s Blowfish algorithm can be executed in memory within 5k, and a simple structure is easy to implement and easy to determine the strength of the algorithm. The algorithm is variable in key length, which can be long as 448 bites and it allows basic word addition and bit XOR operations.[7]

GNU Privacy Guard encryption

Users can create a GNU Privacy Guard (GnuPG or GPG) based wallet to store extra-sensitive passwords. This requires users to install GnuPG Made Easy library. If the library is installed and once the software found GNU Privacy Guard (GnuPG or GPG), users will be asked to choose a key to use for a new wallet.[5] User stil can encrypt passwords with Blowfish symmetric block cipher algorithm since GNU Privacy Guard encrtpytion library includes DSA/Blowfish symmetric block cipher algorithm.[8]

Security of KDE Wallet manager

Using KDE Wallet manager (KWallet) may ease the management of the passwords but It does not provide greater security conditions to user's system. Instead of getting user's other passwords, attackers may get the master password for user's wallets through user's PC.

Since the directory of encrypted files of KDE wallet manager (KWallet) are located in predictable files, It might be vulnerable to viruses or worms those are programmed to aim password management system itself.[4]

Known vulnerabilities


  1. ^ LGPL-2.0-only, LGPL-2.0-or-later, LGPL-2.1-or-later, and LGPL-3.0-or-later.


  1. ^ Zhang, Jie; Luo, Xin; Akkaladevi, Somasheker; Ziegelmayer, Jennifer (2009). "Improving multiple-password recall: an empirical study". European Journal of Information Systems. 18 (2): 165–176. doi:10.1057/ejis.2009.9. ISSN 0960-085X.
  2. ^ Gray, Joshua; Franqueira, Virginia N. L.; Yu, Yijun (2016). "Forensically-Sound Analysis of Security Risks of Using Local Password Managers". 2016 IEEE 24th International Requirements Engineering Conference Workshops (REW). Beijing, China: IEEE: 114–121. doi:10.1109/REW.2016.034. ISBN 978-1-5090-3694-3.
  3. ^ Toman, Zinah Hussein; Toman, Sarah Hussein; Hazar, Manar Joundy (2019). "An In-Depth Comparison Of Software Frameworks For Developing Desktop Applications Using Web Technologies". Journal of Southwest Jiaotong University. 54 (4). doi:10.35741/issn.0258-2724.54.4.1. ISSN 0258-2724.
  4. ^ a b c d e Mulligan, J.; Elbirt, A. J. (2005). "Desktop Security and Usability Trade-Offs: An Evaluation of Password Management Systems". Information Systems Security. 14 (2): 10–19. doi:10.1201/1086/45241.14.2.20050501/88289.3. ISSN 1065-898X.
  5. ^ a b Dudášová, Ludmila; Vaculík, Martin; Procházka, Jakub (2021-12-29). "Psychologický kapitál v pracovní, klinické a školní psychologii: přehledová studie". Ceskoslovenska psychologie. 65 (6): 558–574. doi:10.51561/cspsych.65.6.558. ISSN 0009-062X.
  6. ^ "Schneier on Security: The Blowfish Encryption Algorithm". www.schneier.com. Retrieved 2022-05-27.
  7. ^ Mousa, A. (2005). "Data encryption performance based on Blowfish". 47th International Symposium ELMAR, 2005. IEEE. doi:10.1109/elmar.2005.193660.
  8. ^ Aghili, Hamed (2018-07-26), "Improving Security Using Blow Fish Algorithm on Deduplication Cloud Storage", Lecture Notes in Electrical Engineering, Singapore: Springer Singapore, pp. 723–731, ISBN 978-981-10-8671-7, retrieved 2022-05-27
  9. ^ "NVD - CVE-2005-4900". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  10. ^ "NVD - CVE-2018-12356". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  11. ^ "NVD - CVE-2020-25125". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  12. ^ "NVD - CVE-2019-14855". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  13. ^ "NVD - CVE-2013-4576". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  14. ^ "NVD - CVE-2014-9087". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  15. ^ "NVD - CVE-2010-2547". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  16. ^ "NVD - CVE-2018-12020". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  17. ^ "NVD - CVE-2005-0366". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  18. ^ "NVD - CVE-2006-6169". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  19. ^ "NVD - CVE-2007-1263". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  20. ^ "NVD - CVE-2018-12020". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  21. ^ "NVD - CVE-2016-6313". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.
  22. ^ "NVD - CVE-2015-1607". nvd.nist.gov. Retrieved 2022-05-27.Public Domain This article incorporates text from this source, which is in the public domain.