lz4 provides a streaming interface to LZ4 data streams as well as low level compress and uncompress functions for LZ4 data blocks. The implementation is based on the reference C one.

This package provides a library for encoding and decoding ZIP archive format's "Extra Fields". The intention is to eventually support and provide a low-level API for the majority of PKWARE's and Info-ZIP's extra fields.

This package provides a support of reading and writing of xz compressed streams. It includes also a gxz command for compressing and decompressing data. The package is completely written in Go and doesn't have any dependency on any C code.

Package archiver facilitates convenient, cross-platform, high-level archival and compression operations for a variety of formats and compression algorithms.

Features:

• stream-oriented APIs

• automatically identify archive and compression formats

• traverse directories, archive files, and any other file uniformly as io/fs file systems

• compress and decompress files

• create and extract archive files

• walk or traverse into archive files

• extract only specific files from archives

• insert (append) into .tar and .zip archives

• read from password-protected 7-Zip files

• numerous archive and compression formats supported

• extensible (add more formats just by registering them)

• cross-platform, static binary

• pure Golang (no cgo)

• multithreaded Gzip

• adjust compression levels

• automatically add compressed files to zip archives without re-compressing

• open password-protected rar archives

Supported compression formats:

• brotli (.br)

• bzip2 (.bz2)

• flate (.zip)

• gzip (.gz)

• lz4 (.lz4)

• lzip (.lz)

• snappy (.sz)

• xz (.xz)

• zlib (.zz)

• zstandard (.zst)

Supported archive formats:

• .zip

• .tar (including any compressed variants like .tar.gz)

• .rar (read-only)

• .7z (read-only)

This package provides an command line interface (CLI) tool.

Package archiver facilitates convenient, cross-platform, high-level archival and compression operations for a variety of formats and compression algorithms.

Features:

• stream-oriented APIs

• automatically identify archive and compression formats

• traverse directories, archive files, and any other file uniformly as io/fs file systems

• compress and decompress files

• create and extract archive files

• walk or traverse into archive files

• extract only specific files from archives

• insert (append) into .tar and .zip archives

• read from password-protected 7-Zip files

• numerous archive and compression formats supported

• extensible (add more formats just by registering them)

• cross-platform, static binary

• pure Golang (no cgo)

• multithreaded Gzip

• adjust compression levels

• automatically add compressed files to zip archives without re-compressing

• open password-protected rar archives

Supported compression formats:

• brotli (.br)

• bzip2 (.bz2)

• flate (.zip)

• gzip (.gz)

• lz4 (.lz4)

• lzip (.lz)

• snappy (.sz)

• xz (.xz)

• zlib (.zz)

• zstandard (.zst)

Supported archive formats:

• .zip

• .tar (including any compressed variants like .tar.gz)

• .rar (read-only)

• .7z (read-only)

This package defines basic interfaces to handle tar files. It is similar to fs.FS, but for tar files.

This package is a brotli compressor and decompressor implemented in Go. It was translated from the reference implementation (https://github.com/google/brotli) with the c2go tool at https://github.com/andybalholm/c2go.

compress provides various compression algorithms.

This package provides a Go implementation of the Snappy compression format.

This package provides a library for reading RAR archives with Golang.

This package implements a functionality for pristinely disassembling a tar archive, and stashing needed raw bytes and offsets to reassemble a validating original archive.

This package implements file encryption according to the https://age-encryption.org/v1 specification. It features small explicit keys, no configuration options, and Unix-style composability. This package provides a command line interface (CLI) tools.

SipHash is a family of pseudorandom functions (PRFs) optimized for speed on short messages.

EME (ECB-Mix-ECB or, clearer, Encrypt-Mix-Encrypt) is a wide-block encryption mode developed by Halevi and Rogaway.

This package exports a super-isolated elliptic curve. Over the base field 𝔽ₚ, the curve E does not admit any isogenies to other curves.

Package pinentry provides a client to GnuPG's pinentry.

Shapeshifter-IPC is a library for Go implementing the IPC protocol from the Pluggable Transports 2.0 specification.

This package produces a collection of cryptographic utilities, including the following:

• drbg: a cryptographically secure pseudorandom number generator as specified in NIST SP 800-90A

• encoding/base32: a compact base32 encoder

• secretkey: user-friendly secret keys that can be used with secretbox

• salsa20: a streaming interface (cipher.Stream) for the Salsa20 stream cipher

• poly1305: a streaming interface (hash.Hash) for the Poly1305 one-time authenticator as specified in poly1305

Package xxhash implements the 64-bit variant of xxHash (XXH64) as described at https://xxhash.com/.

This package provides a large set of test vectors for the age file encryption format, as well as a framework to easily generate them.

The test suite can be applied to any age implementation, regardless of the language it's implemented in, and the level of abstraction of its interface. For the simplest, most universal integration, the implementation can just attempt to decrypt the test files, check the operation only succeeds if expect is success, and compare the decrypted payload. Test vectors involving unimplemented features (such as passphrase encryption or armoring) can be ignored.

Package imohash implements a fast, constant-time hash for files. It is based atop murmurhash3 and uses file size and sample data to construct the hash.

This is a native Go implementation of the xxHash algorithm, an extremely fast non-cryptographic hash algorithm, working at speeds close to RAM limits.

pcg is a random number generator that uses Permuted Congruential Generator (PCG) algorithm.

This package provides a drop-in replacement of the Golang standard encoding/base64 library.