Security

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General

Resources

News

Passwords

Server

See also Distros

Firewalls

csf/lfd

FireHOL

Windows

Logging

Integrity

Hardening

AppArmor

SELinux

Intrusion detection



Shells

Honeypot

Cryptography


There are several methods to use a block cipher to build a cryptographic hash function, specifically a one-way compression function. The methods resemble the block cipher modes of operation usually used for encryption. All well-known hash functions, including MD4, MD5, SHA-1 and SHA-2 are built from block-cipher-like components designed for the purpose, with feedback to ensure that the resulting function is not invertible. SHA-3 finalists included functions with block-cipher-like components (e.g., Skein, BLAKE) though the function finally selected, Keccak, was built on a cryptographic sponge instead.

RSA

EC

Suites

Encryption

PGP / GPG

Guides

gpg --export --armor <keyid> | awk '{ print "    "$0 }'

Tools

  • WebPG - Browser Extensions
  • Monkeysphere project's goal is to extend OpenPGP's web of trust to new areas of the Internet to help us securely identify servers we connect to, as well as each other while we work online. The suite of Monkeysphere utilities provides a framework to transparently leverage the web of trust for authentication of TLS/SSL communications through the normal use of tools you are familiar with, such as your web browser0 or secure shell.

Key servers

DNS

E-mail

Libraries

Google

  • Penango is a web browser add-on that allows people to send and receive authenticated and encrypted messages end-to-end on the Internet with standards-based, interoperable protocols.
  • gAES - Encrypt your google chats and make the NSA sad

Other

File system

Other

Homomorphic

TLS/SSL

  • Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), are cryptographic protocols that provide communication security over the Internet. They use asymmetric cryptography for authentication of key exchange, symmetric encryption for confidentiality and message authentication codes for message integrity. Several versions of the protocols are in widespread use in applications such as web browsing, electronic mail, Internet faxing, instant messaging and voice-over-IP (VoIP).

In the TCP/IP model view, TLS and SSL encrypt the data of network connections at a lower sublayer of its application layer. In OSI model equivalences, TLS/SSL is initialized at layer 5 (the session layer) then works at layer 6 (the presentation layer): first the session layer has a handshake using an asymmetric cipher in order to establish cipher settings and a shared key for that session; then the presentation layer encrypts the rest of the communication using a symmetric cipher and that session key. In both models, TLS and SSL work on behalf of the underlying transport layer, whose segments carry encrypted data.

HTTPS

See HTTP#SSL

PFS

Software

Gnutils

OpenSSL

openssl ciphers -v

Other

Certificates

some rfcs..

Wildcard

Domain Validation

Organisational Validation

involving better/slower background checks for the Organisation Name field

Extended Validation

Self-signed

Vulnerable to MITM as cracker can generate their own, OK if you control both ends.

CAs

Services

Comodo
VeriSign
GlobalSign
StartCom

Free certs, one cert per domain, 1 year. One only pays for acions that require human intervention, i.e., validation.

Cacert.org

Community group providing certs. Web of trust based assurance point system. Not carried by major browsers, just Linux distros.

Other

Tools

Software

DNSSEC

DANE

Future

  • TACK, a proposal for a dynamically activated public key pinning framework that provides a layer of indirection away from Certificate Authorities, but is fully backwards compatible with existing CA certificates, and doesn't require sites to modify their existing certificate chains.

HTML

Vulnerabilities

Legal

UX

Windows

Testing

Metasploit

Web

  • w3af is a Web Application Attack and Audit Framework. The project's goal is to create a framework to find and exploit web application vulnerabilities that is easy to use and extend.

DB

Burp

Inception

  • Inception is a FireWire physical memory manipulation and hacking tool exploiting IEEE 1394 SBP-2 DMA. The tool can unlock (any password accepted) and escalate privileges to Administrator/root on almost any powered on machine you have physical access to. The tool can attack over FireWire, Thunderbolt, ExpressCard, PC Card and any other PCI/PCIe interfaces.

DetecTor.io

to sort

Other

  • Pond is forward secure, asynchronous messaging for the discerning. Pond messages are asynchronous, but are not a record; they expire automatically a week after they are received. Pond seeks to prevent leaking traffic information against everyone except a global passive attacker. [9]
  • EZCrypt - We provide you with the power to encrypt the data BEFORE it gets stored on our site. All encryption/decryption is done on the client end using AES-CBC 128bit with a hash key generated on each paste. The server will only store the encrypted data without the hash key, so only you have the power to decrypt it.
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