go-mcrypt

Go bindings for mcrypt library.

Should be compatible with most algo/modes supported by libmcrypt.

Requirements

• libmcrypt (http://mcrypt.sourceforge.net/)

Usage

package main

import (
	"fmt"
	mcrypt "github.com/mfpierre/go-mcrypt"
)

func main() {
	key := []byte("here is a random key of 32 bytes")
	plaintext := []byte("here is what you want to encrypt")
	iv := make([]byte, 16)

	// using CAST-256 in ECB mode
	encrypted, _ := mcrypt.Encrypt(key, iv, plaintext, "cast-256", "ecb")
	decrypted, _ := mcrypt.Decrypt(key, iv, encrypted, "cast-256", "ecb")
	fmt.Println(encrypted)
	fmt.Println(decrypted)
}

Below a reminder of IV & Key size that you can use depending on algo/mode settings

Cipher Name	Block Mode	Block Size	IV Size	Default Key Size	All Key Size(s)
CAST-128	CBC	8	8	16	16
CAST-128	ECB	8	8	16	16
CAST-128	OFB	8	8	16	16
CAST-128	NOFB	8	8	16	16
CAST-128	CFB	8	8	16	16
CAST-128	NCFB	8	8	16	16
CAST-128	CTR	8	8	16	16
GOST	CBC	8	8	32	32
GOST	ECB	8	8	32	32
GOST	OFB	8	8	32	32
GOST	NOFB	8	8	32	32
GOST	CFB	8	8	32	32
GOST	NCFB	8	8	32	32
GOST	CTR	8	8	32	32
Rijndael-128	CBC	16	16	32	16 24 32
Rijndael-128	ECB	16	16	32	16 24 32
Rijndael-128	OFB	16	16	32	16 24 32
Rijndael-128	NOFB	16	16	32	16 24 32
Rijndael-128	CFB	16	16	32	16 24 32
Rijndael-128	NCFB	16	16	32	16 24 32
Rijndael-128	CTR	16	16	32	16 24 32
Twofish	CBC	16	16	32	16 24 32
Twofish	ECB	16	16	32	16 24 32
Twofish	OFB	16	16	32	16 24 32
Twofish	NOFB	16	16	32	16 24 32
Twofish	CFB	16	16	32	16 24 32
Twofish	NCFB	16	16	32	16 24 32
Twofish	CTR	16	16	32	16 24 32
RC4	STREAM	1	0	256
CAST-256	CBC	16	16	32	16 24 32
CAST-256	ECB	16	16	32	16 24 32
CAST-256	OFB	16	16	32	16 24 32
CAST-256	NOFB	16	16	32	16 24 32
CAST-256	CFB	16	16	32	16 24 32
CAST-256	NCFB	16	16	32	16 24 32
CAST-256	CTR	16	16	32	16 24 32
LOKI97	CBC	16	16	32	16 24 32
LOKI97	ECB	16	16	32	16 24 32
LOKI97	OFB	16	16	32	16 24 32
LOKI97	NOFB	16	16	32	16 24 32
LOKI97	CFB	16	16	32	16 24 32
LOKI97	NCFB	16	16	32	16 24 32
LOKI97	CTR	16	16	32	16 24 32
Rijndael-192	CBC	24	24	32	16 24 32
Rijndael-192	ECB	24	24	32	16 24 32
Rijndael-192	OFB	24	24	32	16 24 32
Rijndael-192	NOFB	24	24	32	16 24 32
Rijndael-192	CFB	24	24	32	16 24 32
Rijndael-192	NCFB	24	24	32	16 24 32
Rijndael-192	CTR	24	24	32	16 24 32
Safer+	CBC	16	16	32	16 24 32
Safer+	ECB	16	16	32	16 24 32
Safer+	OFB	16	16	32	16 24 32
Safer+	NOFB	16	16	32	16 24 32
Safer+	CFB	16	16	32	16 24 32
Safer+	NCFB	16	16	32	16 24 32
Safer+	CTR	16	16	32	16 24 32
WAKE	STREAM	1	0	32	32
Blowfish	CBC	8	8	56
Blowfish	ECB	8	8	56
Blowfish	OFB	8	8	56
Blowfish	NOFB	8	8	56
Blowfish	CFB	8	8	56
Blowfish	NCFB	8	8	56
Blowfish	CTR	8	8	56
DES	CBC	8	8	8	8
DES	ECB	8	8	8	8
DES	OFB	8	8	8	8
DES	NOFB	8	8	8	8
DES	CFB	8	8	8	8
DES	NCFB	8	8	8	8
DES	CTR	8	8	8	8
Rijndael-256	CBC	32	32	32	16 24 32
Rijndael-256	ECB	32	32	32	16 24 32
Rijndael-256	OFB	32	32	32	16 24 32
Rijndael-256	NOFB	32	32	32	16 24 32
Rijndael-256	CFB	32	32	32	16 24 32
Rijndael-256	NCFB	32	32	32	16 24 32
Rijndael-256	CTR	32	32	32	16 24 32
Serpent	CBC	16	16	32	16 24 32
Serpent	ECB	16	16	32	16 24 32
Serpent	OFB	16	16	32	16 24 32
Serpent	NOFB	16	16	32	16 24 32
Serpent	CFB	16	16	32	16 24 32
Serpent	NCFB	16	16	32	16 24 32
Serpent	CTR	16	16	32	16 24 32
xTEA	CBC	8	8	16	16
xTEA	ECB	8	8	16	16
xTEA	OFB	8	8	16	16
xTEA	NOFB	8	8	16	16
xTEA	CFB	8	8	16	16
xTEA	NCFB	8	8	16	16
xTEA	CTR	8	8	16	16
Blowfish	CBC	8	8	56
Blowfish	ECB	8	8	56
Blowfish	OFB	8	8	56
Blowfish	NOFB	8	8	56
Blowfish	CFB	8	8	56
Blowfish	NCFB	8	8	56
Blowfish	CTR	8	8	56
enigma	STREAM	1	0	13
RC2	CBC	8	8	128
RC2	ECB	8	8	128
RC2	OFB	8	8	128
RC2	NOFB	8	8	128
RC2	CFB	8	8	128
RC2	NCFB	8	8	128
RC2	CTR	8	8	128
3DES	CBC	8	8	24	24
3DES	ECB	8	8	24	24
3DES	OFB	8	8	24	24
3DES	NOFB	8	8	24	24
3DES	CFB	8	8	24	24
3DES	NCFB	8	8	24	24
3DES	CTR	8	8	24	24

Credits

Thanks to https://github.com/tblyler/go-mcrypt for initial implementation with rijndael