Dongle: A Lightweight, Semantic, Developer‑Friendly Go Library for Encoding, Decoding, and Cryptographic Operations

Dongle is a lightweight, semantic, and developer‑friendly Go library that provides a wide range of encoding/decoding and encryption/decryption capabilities.

It has been included in the awesome‑go collection, and its source code is available at github.com/golang-module/dongle and gitee.com/golang-module/dongle .

Update Log

Added support for encrypting/decrypting ultra‑long text with tea when the plaintext exceeds 8 bytes, using empty‑string padding for segmented encryption.

Added support for the Empty padding mode.

Replaced the SM3 implementation from github.com/tjfoc/gmsm/sm3 with github.com/emmansun/gmsm/sm3 .

Moved the encrypt method from encrypter.go to cipher.go and the decrypt method from decrypter.go to cipher.go .

Removed the error types invalidTeaSrcError , invalidModeError , and invalidPaddingError .

Feature List

Hex encode/decode

Base16 encode/decode

Base32 encode/decode

Base45 encode/decode

Base58 encode/decode

Base62 encode/decode

Base64 encode/decode

Base64URL encode/decode

SafeURL encode/decode

Base85 encode/decode

Base91 encode/decode

Base100 encode/decode

Morse code encode/decode

MD2, MD4, MD5 hash

SHA‑1, SHA‑224, SHA‑256, SHA‑384, SHA‑512, SHA‑3 (224/256/384/512) hash

SHAKE128, SHAKE256 hash

RIPEMD‑160 hash

Blake2b (256/384/512) and Blake2s‑256 hash

HMAC variants for MD2, MD4, MD5, SHA‑1/224/256/384/512, SHA‑3, RIPEMD‑160, SM3

RC2, RC4, RC5, RC6 encrypt/decrypt

Tea and XTea encrypt/decrypt

AES, Blowfish, DES, 3DES encrypt/decrypt

RSA, ECC, SM2, SM3, SM4, SM7, SM9 encrypt/decrypt

Bcrypt, Ed25519, RSA, DSA sign/verify