aespipe

Encrypts data from stdin to stdout

aesutil

Command line program ('aes') to encrypt and decrypt data using the Rijndael algorithm

asedriveiiie-serial

ASEDriveIIIe Serial Card Reader

asedriveiiie-usb

ASEDriveIIIe USB Card Reader

asekey

ASEKey USB SIM Card Reader

bcrypt

A file encryption utility using Paul Kocher's implementation of the blowfish algorithm

bcwipe

BCWipe secure file removal utility

bestcrypt

commercially licensed transparent filesystem encryption

bsign

embed secure hashes (SHA1) and digital signatures (GNU Privacy Guard) into files

ccid

CCID free software driver

ccrypt

Encryption and decryption

cfs

Cryptographic Filesystem

chntpw

Offline Windows NT Password & Registry Editor

coolkey

Linux Driver support for the CoolKey and CAC products

cryptoapi

Modules that add encryption ability at the kernel level.

dirmngr

DirMngr is a daemon to handle CRL and certificate requests for GnuPG

ekeyd

Entropy Key userspace daemon

elettra

Plausible deniable file cryptography

gifshuffle

GIF colourmap steganography

gnupg

The GNU Privacy Guard, a GPL pgp replacement

gnupg-pkcs11-scd

PKCS#11 support for GnuPG

gorilla

Password Safe clone for Linux. Stores passwords in secure way with GUI interface.

gpa

The GNU Privacy Assistant (GPA) is a graphical user interface for GnuPG

gpg-ringmgr

GPG Keyring Manager to handle large GPG keyrings more easily

gpgme

GnuPG Made Easy is a library for making GnuPG easier to use

gpgstats

GPGstats calculates statistics on the keys in your key-ring

gringotts

Utility that allows you to jot down sensitive data

hashalot

CryptoAPI utils

heimdal

Kerberos 5 implementation from KTH

jacksum

Java utility for computing and verifying checksums: CRC*, MD*, RIPEMD*, SHA*, TIGER*, WHIRLPOOL

johntheripper

fast password cracker

keylookup

A tool to fetch PGP keys from keyservers

keynote

The KeyNote Trust-Management System

kstart

Modified versions of kinit for automatic ticket refresh

luks-tools

GUI frontend for dm-crypt/luks.

mcrypt

replacement of the old unix crypt(1)

md4sum

md4 and edonkey hash algorithm tool

md5deep

Expanded md5sum program with recursive and comparison options

mdcrack

A MD4/MD5/NTML hashes bruteforcer.

mhash

library providing a uniform interface to a large number of hash algorithms

mit-krb5

MIT Kerberos V

nasty

Proof-of-concept GPG passphrase recovery tool.

nistp224

nistp224 performs compressed Diffie-Hellman key exchange on the NIST P-224 elliptic curve

onak

onak is an OpenPGP keyserver

opencdk

Open Crypto Development Kit for basic OpenPGP message manipulation

openssl-blacklist

Detection of weak ssl keys produced by certain debian versions between 2006 and 2008

openssl-tpm-engine

This provides a OpenSSL engine that uses private keys stored in TPM hardware

openvpn-blacklist

Detection of weak openvpn keys produced by certain debian versions between 2006 and 2008

ophcrack

A time-memory-trade-off-cracker

ophcrack-tables

Tables available for ophcrack

pdfcrack

Tool for recovering passwords and content from PDF-files

pgpdump

A PGP packet visualizer

pinentry

Collection of simple PIN or passphrase entry dialogs which utilize the Assuan protocol

pkcrack

PkZip cipher breaker

qca

Qt Cryptographic Architecture (QCA)

qca-cyrus-sasl

SASL plugin for QCA

qca-gnupg

GnuPG plugin for QCA

qca-logger

Logger plugin for QCA

qca-ossl

TLS, S/MIME, PKCS#12, crypto algorithms plugin for QCA

qca-pkcs11

PKCS#11 (smartcard) plugin for QCA

quickcrypt

gives you a quick MD5 Password from any string

quintuple-agent

Quintuple Agent stores your (GnuPG) secrets in a secure manner.

rainbowcrack

Hash cracker that precomputes plaintext - ciphertext pairs in advance

rotix

Rotix allows you to generate rotational obfuscations.

scsign

Scsign - a command-line utility to digitally sign a file

seahorse

A GNOME application for managing encryption keys

seahorse-plugins

A GNOME application for managing encryption keys

sgeps

simple GnuPG-encrypted password store written in perl

shash

Generate or check digests or MACs of files

sign

File signing and signature verification utility

signing-party

A collection of several tools related to OpenPGP

ssh-multiadd

adds multiple ssh keys to the ssh authentication agent

stan

Stan is a console application that analyzes binary streams and calculates statistical information.

steghide

A steganography program which hides data in various media files

tinyca

Simple Perl/Tk GUI to manage a small certification authority

tpm-emulator

Emulator driver for tpm

tpm-tools

TrouSerS' support tools for the Trusted Platform Modules

trousers

An open-source TCG Software Stack (TSS) v1.1 implementation

truecrypt

Free open-source disk encryption software

wxchecksums

Calculate and verify CRC and MD5 checksums

xca

A graphical user interface to OpenSSL, RSA public keys, certificates, signing requests and revokation lists

xor-analyze

program for cryptanalyzing xor 'encryption' with variable key length

aespipe

heimdal

qca-cyrus-sasl

aesutil

jacksum

qca-gnupg

asedriveiiie-serial

johntheripper

qca-logger

asedriveiiie-usb

keylookup

qca-ossl

asekey

keynote

qca-pkcs11

bcrypt

kstart

quickcrypt

bcwipe

luks-tools

quintuple-agent

bestcrypt

mcrypt

rainbowcrack

bsign

md4sum

rotix

ccid

md5deep

scsign

ccrypt

mdcrack

seahorse

cfs

mhash

seahorse-plugins

chntpw

mit-krb5

sgeps

coolkey

nasty

shash

cryptoapi

nistp224

sign

dirmngr

onak

signing-party

ekeyd

opencdk

ssh-multiadd

elettra

openssl-blacklist

stan

gifshuffle

openssl-tpm-engine

steghide

gnupg

openvpn-blacklist

tinyca

gnupg-pkcs11-scd

ophcrack

tpm-emulator

gorilla

ophcrack-tables

tpm-tools

gpa

pdfcrack

trousers

gpg-ringmgr

pgpdump

truecrypt

gpgme

pinentry

wxchecksums

gpgstats

pkcrack

xca

gringotts

qca

xor-analyze

hashalot