dshash

Simple SHA256 hashing library and example utility

dshash C++ class

• located in src/
• A simple implementation of SHA256 with no dependencies.
• Just two files: dshash.cpp and dshash.hpp
• can hash a file, directory tree, or string.
• uses std::array<uint8_t, 32> as the underlying type
• generally used as a std::string, containing the hex representation of the hash.

dshash utility

• located in dshash/
• no dependencies, statically linked
• simple command line utilty to calculate hash of file or directory
• outputs the hash only with a newline
• -v (verbose) mode lists the individual files as they are processed.

Installation

Quick install (recommended)

curl https://getbin.xyz/dshash-install | bash

Manual download

# For x86_64
curl -L -o dshash https://getbin.xyz/dshash:latest-x86_64

# For arm64/aarch64
curl -L -o dshash https://getbin.xyz/dshash:latest-aarch64

chmod +x dshash

Using getpkg

getpkg install dshash

Testing

• Testing of both the C++ class and the dshash utility are in tests/
• ./test.sh runs all tests and returns success only if all pass
• Comprehensive test suite includes:
  • Unit tests for the library
  • System sha256sum comparison
  • NIST test vectors validation
  • Stress tests and edge cases
  • Performance benchmarks

Publishing

• dshash utility published as a getpkg.xyz package, and also available from getbin.xyz
• Automated CI/CD via Gitea Actions for linux/amd64 and linux/arm64