Python module to handle type-length-value (TLV) encoded data 8-bit type, 8-bit length, and N-byte value as described within the Apple HomeKit Accessory Protocol Specification Non-Commercial Version Release R2.

nkdfu is a Python DFU tool for updating Nitrokeys' firmware. Currently supports Nitrokey Pro only.

Python client for NetHSM

Add (mutiple) aliases to a click group or command

liboqs is an open source C library for quantum-safe cryptographic algorithms.

Code to enable quantum-safe cryptography (QSC) in a standard OpenSSL (3.x) distribution by way of implementing a single shared library, the OQS provider.

LibreSSL is a version of the TLS/crypto stack, forked from OpenSSL in 2014 with the goals of modernizing the codebase, improving security, and applying best practice development processes. This package also includes a netcat implementation that supports TLS.

OpenSSL is an implementation of SSL/TLS.

The wolfSSL embedded SSL library (formerly CyaSSL) is an SSL/TLS library written in ANSI C and targeted for embedded, RTOS, and resource-constrained environments - primarily because of its small size, speed, and feature set. wolfSSL supports industry standards up to the current TLS 1.3 and DTLS 1.2, is up to 20 times smaller than OpenSSL, and offers progressive ciphers such as ChaCha20, Curve25519, NTRU, and Blake2b.

OpenSSL is an implementation of SSL/TLS.

OpenSSL is an implementation of SSL/TLS.

OCaml - Oxidized!

PHP (PHP Hypertext Processor) is a server-side (CGI) scripting language designed primarily for web development but is also used as a general-purpose programming language. PHP code may be embedded into HTML code, or it can be used in combination with various web template systems, web content management systems and web frameworks.

Libpng is the official PNG (Portable Network Graphics) reference library. It supports almost all PNG features and is extensible.

GD is a library for the dynamic creation of images by programmers. GD is written in C, and "wrappers" are available for Perl, PHP and other languages. GD creates PNG, JPEG, GIF, WebP, XPM, BMP images, among other formats. GD is commonly used to generate charts, graphics, thumbnails, and most anything else, on the fly. While not restricted to use on the web, the most common applications of GD involve website development.

Pinentry provides a console and a Qt GUI that allows users to enter a passphrase when gpg is run and needs it.

Pinentry provides a console that allows users to enter a passphrase when gpg is run and needs it.

Sagittarius is a R6RS/R7RS scheme implementation with features like built-in CLOS, Common Lisp like reader macro, cryptographic libraries, etc.

libssh2 is a library intended to allow software developers access to the SSH-2 protocol in an easy-to-use self-contained package. It can be built into an application to perform many different tasks when communicating with a server that supports the SSH-2 protocol.

HPN-SSH is a series of modifications to OpenSSH, the predominant implementation of the ssh protocol. It was originally developed to address performance issues when using ssh on high speed long distance networks.

autossh is a program to start a copy of ssh and monitor it, restarting it as necessary should it die or stop passing traffic.

The SSH2 protocol implemented in OpenSSH is standardised by the IETF secsh working group and is specified in several RFCs and drafts. It is composed of three layered components:

The transport layer provides algorithm negotiation and a key exchange. The key exchange includes server authentication and results in a cryptographically secured connection: it provides integrity, confidentiality and optional compression.

The user authentication layer uses the established connection and relies on the services provided by the transport layer. It provides several mechanisms for user authentication. These include traditional password authentication as well as public-key or host-based authentication mechanisms.

The connection layer multiplexes many different concurrent channels over the authenticated connection and allows tunneling of login sessions and TCP-forwarding. It provides a flow control service for these channels. Additionally, various channel-specific options can be negotiated.

libssh2 is a library intended to allow software developers access to the SSH-2 protocol in an easy-to-use self-contained package. It can be built into an application to perform many different tasks when communicating with a server that supports the SSH-2 protocol.

The SSH2 protocol implemented in OpenSSH is standardised by the IETF secsh working group and is specified in several RFCs and drafts. It is composed of three layered components:

The transport layer provides algorithm negotiation and a key exchange. The key exchange includes server authentication and results in a cryptographically secured connection: it provides integrity, confidentiality and optional compression.

The user authentication layer uses the established connection and relies on the services provided by the transport layer. It provides several mechanisms for user authentication. These include traditional password authentication as well as public-key or host-based authentication mechanisms.

The connection layer multiplexes many different concurrent channels over the authenticated connection and allows tunneling of login sessions and TCP-forwarding. It provides a flow control service for these channels. Additionally, various channel-specific options can be negotiated.