Verilog implementation of the symmetric block cipher AES (Advanced Encryption Standard) as specified in NIST FIPS 197. This implementation supports 128 and 256 bit keys.

Implementation of AES-128 in pure C. No modes are given. Only one block of encryption and decryption is given here.

A petite library of encryption functions for PHP

Fast constant-time AES implementations on 32-bit architectures

GOST cryptographic functions

A fast, general purpose crypto library in pure Rust.

Camellia cipher SIMD vector implementations for x86 (with AES-NI, VAES and/or GFNI instructions), ARM (with ARMv8 Crypto Extension instructions) and POWER (with VMX+VSX+crypto instructions)

Learn about cryptography concepts - Both basics and core.

A 256-bit block cipher based on SPN design, supporting key sizes of 256/384/512 bits

Python Implementation of Hasty Pudding Cipher (HPC)

Hacking cryptography in Ruby, using Cryptopals techniques

A Lightweight Single Header file C++ AES Library that also supports AES Hardware Acceleration Technology

SEED Encryption Algorithm written in Go

Symmetric Key Block Cipher "Magma" in Rust

An Automatic Tool to Search for Full Impossible-Differential, Zero-Correlation and Integral Attacks

This repo is a collection of proof-of-concepts, examples, essays and experiments in cryptography, cryptanalysis, steganography and covert channels that I originally wrote in 2015.

C++ AES implementation

Block encryption algorithm GOST R 34.12-2015 "Kuznechik"

PRESENT is a lightweight block cipher.

Simplified Data Encryption Standard (S-DES) is a simple version of the DES Algorithm. It is a block cipher that takes a block of plain text and converts it into ciphertext. It takes a block of 8 bit. It is a symmetric key cipher, they use the same key for both encryption and decryption. We take a random 10-bit key and produce two 8-bit keys.