crypt

A simple Go library for cryptographic

Simple example

import "github.com/kayon/crypt"

func main() {

    ...

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

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

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

    ...

    // shortcuts
    ciphertext, err := crypt.AES.Encrypt(plaintext, key, nil, crypt.Options{Mode: crypt.MODE_CBC, Padding: crypt.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