crypt）

A simple Go library for cryptographic

Simple example

import "github.com/endlesstravel/gocrypt"

func main() {

    ...

    c, err := gocrypt.NewAES(key, nil, gocrypt.Options{Padding: gocrypt.PAD_ZEROPADDING})
    if err != nil {
        ...
    }

    // encrypt
    ciphertext, err := c.Encrypt(plaintext)

    // decrypt
    plaintext, err = c.Decrypt(ciphertext)

    ...

    // shortcuts
    ciphertext, err := gocrypt.AES.Encrypt(plaintext, key, nil, gocrypt.Options{Mode: gocrypt.MODE_CBC, Padding: gocrypt.PAD_ANSIX923})

}

List of methods

AES

NewAES(key, iv []byte, args ...Options) (*Crypt, error)

DES

NewDES(key, iv []byte, args ...Options) (*Crypt, error)

Triple DES

NewDES3(key, iv []byte, args ...Options) (*Crypt, error)

ChaCha20

NewChaCha20(key, iv []byte）(*Crypt, error)

Blowfish

NewBlowfish(key[]byte) (*Crypt, error)

RC4

NewRC4(key []byte) (*Crypt, error)

Crypt

(Crypt) Encrypt(plaintext []byte) (ciphertext []byte, err error)

(Crypt) Decrypt(ciphertext []byte) (plaintext []byte, err error)

Shortcuts

AES

AES.Encrypt(plaintext, key, iv []byte, args ...Options) ([]byte, error)
AES.Decrypt(ciphertext, key, iv []byte, args ...Options) ([]byte, error)

DES

DES.Encrypt(plaintext, key, iv []byte, args ...Options) ([]byte, error)
DES.Decrypt(ciphertext, key, iv []byte, args ...Options) ([]byte, error)

DES3

DES3.Encrypt(plaintext, key, iv []byte, args ...Options) ([]byte, error)
DES3.Decrypt(ciphertext, key, iv []byte, args ...Options) ([]byte, error)

ChaCha20

ChaCha20.Encrypt(plaintext, key, iv []byte) ([]byte, error)
ChaCha20.Decrypt(ciphertext, key, iv []byte) ([]byte, error)

Blowfish

Blowfish.Encrypt(plaintext, key []byte) ([]byte, error)
Blowfish.Decrypt(ciphertext, key []byte) ([]byte, error)

RC4

RC4.Encrypt(plaintext, key []byte) ([]byte, error)
RC4.Decrypt(ciphertext, key []byte) ([]byte, error)

MD5

MD5.Sum(plaintext []byte) []byte
MD5.Hex(plaintext []byte) string

Sha3

Sha3.Sum224(data []byte) []byte
Sha3.Sum256(data []byte) []byte
Sha3.Sum384(data []byte) []byte
Sha3.Sum512(data []byte) []byte
Sha3.Shake128(data []byte, size int) (hash []byte)
Sha3.Shake256(data []byte, size int) (hash []byte)

Options.Mode

block cipher mode

MODE_CBC default

CBC Cipher-block chaining
MODE_CFB

CFB Cipher feedback
MODE_CTR

CTR Counter mode
MODE_OFB

OFB Output feedback
MODE_GCM

GCM Galois/Counter Mod
MODE_ECB

ECB Electronic codebook

Options.Padding

PAD_PKCS7 default

PKCS#7 RFC 5652
PAD_ISO97971

ISO/IEC 9797-1 Padding Method 2
PAD_ANSIX923

ANSI X.923
PAD_ISO10126

ISO 10126
PAD_ZEROPADDING

Zero padding
PAD_NOPADDING