Cryptography Implementations in Go

This repository contains implementations of various cryptographic algorithms and schemes in the Go programming language.

Projects

BigNumber

• Purpose: An arbitrary-precision arithmetic library. This is often a fundamental building block for many cryptographic algorithms.
• Usage:

  cd bignumber
  go run main.go

Curve

• Purpose: Demonstrates Elliptic Curve Integrated Encryption Scheme (ECIES) using the ecies/go/v2 library. ECIES is a hybrid encryption scheme providing data confidentiality.
• Usage:

  cd curve
  go run main.go

ElGamal

• Purpose: An implementation of the ElGamal encryption scheme. ElGamal is an asymmetric key encryption algorithm for public-key cryptography. This project supports encryption, decryption, signing, and verification.
• Usage:

  cd elgamal
  go run main.go --help # To see available flags and options
  # Example: Encrypt a message
  go run main.go --encrypt --p 23 --alfa 5 --B 10 --m 9

SHA-1

• Purpose: An implementation of the SHA-1 (Secure Hash Algorithm 1) hashing function. SHA-1 produces a 160-bit (20-byte) hash value.
• Usage:

  cd sha1
  go run main.go # Hashes a predefined string
  go run main.go test.txt # Hashes the content of test.txt (create this file or use another)

How to Build

To build any of the projects, navigate to the project's directory and use the go build command:

cd <project-directory>
go build

For example, to build the bignumber project:

cd bignumber
go build

Contributing

Contributions are welcome! Please feel free to submit a pull request or open an issue.