cryptor.md

Cryptor

Package cryptor contains some functions for data encryption and decryption. Support base64, md5, hmac, aes, des, rsa.

Source:

• https://github.com/duke-git/lancet/blob/main/cryptor/basic.go
• https://github.com/duke-git/lancet/blob/main/cryptor/encrypt.go

Usage:

import (
    "github.com/duke-git/lancet/v2/cryptor"
)

Index

• AesEcbEncrypt
• AesEcbDecrypt
• AesCbcEncrypt
• AesCbcDecrypt
• AesCtrCrypt
• AesCfbEncrypt
• AesCfbDecrypt
• AesOfbEncrypt
• AesOfbDecrypt
• Base64StdEncode
• Base64StdDecode
• DesEcbEncrypt
• DesEcbDecrypt
• DesCbcEncrypt
• DesCbcDecrypt
• DesCtrCrypt
• DesCfbEncrypt
• DesCfbDecrypt
• DesOfbEncrypt
• DesOfbDecrypt
• HmacMd5
• HmacSha1
• HmacSha256
• HmacSha512
• Md5String
• Md5File
• Sha1
• Sha256
• Sha512
• GenerateRsaKey
• RsaEncrypt
• RsaDecrypt

Documentation

AesEcbEncrypt

Encrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesEcbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesEcbDecrypt

Decrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesEcbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesCbcEncrypt

Encrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesCbcEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesCbcDecrypt

Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesCbcDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesCtrCrypt

Encrypt or decrypt data with key use AES CTR algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesCtrCrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCtrCrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesCfbEncrypt

Encrypt data with key use AES CFB algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesCfbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesCfbDecrypt

Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesCfbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesOfbEncrypt

Enecrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesOfbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

AesOfbDecrypt

Decrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.

Signature:

func AesOfbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

Base64StdEncode

Encode string with base64 encoding.

Signature:

func Base64StdEncode(s string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    base64Str := cryptor.Base64StdEncode("hello")
    fmt.Println(base64Str)

    // Output:
    // aGVsbG8=
}

Base64StdDecode

Decode a base64 encoded string.

Signature:

func Base64StdDecode(s string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := cryptor.Base64StdDecode("aGVsbG8=")
    fmt.Println(str)

    // Output:
    // hello
}

DesEcbEncrypt

Encrypt data with key use DES ECB algorithm. Length of `key` param should be 8.

Signature:

func DesEcbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))

    decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesEcbDecrypt

Decrypt data with key use DES ECB algorithm. Length of `key` param should be 8.

Signature:

func DesEcbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))

    decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesCbcEncrypt

Encrypt data with key use DES CBC algorithm. Length of `key` param should be 8.

Signature:

func DesCbcEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesCbcDecrypt

Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.

Signature:

func DesCbcDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesCtrCrypt

Encrypt or decrypt data with key use DES CTR algorithm. Length of `key` param should be 8.

Signature:

func DesCtrCrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCtrCrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesCfbEncrypt

Encrypt data with key use DES CFB algorithm. Length of `key` param should be 8.

Signature:

func DesCfbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesCfbDecrypt

Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.

Signature:

func DesCfbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesOfbEncrypt

Enecrypt data with key use DES OFB algorithm. Length of `key` param should be 8.

Signature:

func DesOfbEncrypt(data, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

DesOfbDecrypt

Decrypt data with key use DES OFB algorithm. Length of `key` param should be 8.

Signature:

func DesOfbDecrypt(encrypted, key []byte) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefgh"

    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))

    fmt.Println(string(decrypted))

    // Output:
    // hello
}

HmacMd5

Get the md5 hmac hash of string.

Signature:

func HmacMd5(data, key string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
      str := "hello"
    key := "12345"

    hms := cryptor.HmacMd5(str, key)
    fmt.Println(hms)

    // Output:
    // e834306eab892d872525d4918a7a639a
}

HmacSha1

Get the sha1 hmac hash of string.

Signature:

func HmacSha1(data, key string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"
    key := "12345"

    hms := cryptor.HmacSha1(str, key)
    fmt.Println(hms)

    // Output:
    // 5c6a9db0cccb92e36ed0323fd09b7f936de9ace0
}

HmacSha256

Get the sha256 hmac hash of string

Signature:

func HmacSha256(data, key string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"
    key := "12345"

    hms := cryptor.HmacSha256(str, key)
    fmt.Println(hms)

    // Output:
    // 315bb93c4e989862ba09cb62e05d73a5f376cb36f0d786edab0c320d059fde75
}

HmacSha512

Get the sha512 hmac hash of string.

Signature:

func HmacSha512(data, key string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"
    key := "12345"

    hms := cryptor.HmacSha512(str, key)
    fmt.Println(hms)

    // Output:
    // dd8f1290a9dd23d354e2526d9a2e9ce8cffffdd37cb320800d1c6c13d2efc363288376a196c5458daf53f8e1aa6b45a6d856303d5c0a2064bff9785861d48cfc
}

Md5String

Get the md5 value of string.

Signature:

func Md5String(s string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"

    md5Str := cryptor.Md5String(str)
    fmt.Println(md5Str)

    // Output:
    // 5d41402abc4b2a76b9719d911017c592
}

Md5File

Get the md5 value of file.

Signature:

func Md5File(filepath string) (string, error)

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    s := cryptor.Md5File("./main.go"))
    fmt.Println(s)
}

Sha1

Get the sha1 value of string.

Signature:

func Sha1(data string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"

    result := cryptor.Sha1(str)
    fmt.Println(result)

    // Output:
    // aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d
}

Sha256

Get the sha256 value of string.

Signature:

func Sha256(data string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"

    result := cryptor.Sha256(str)
    fmt.Println(result)

    // Output:
    // 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
}

Sha512

Get the sha512 value of string.

Signature:

func Sha512(data string) string

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    str := "hello"

    result := cryptor.Sha512(str)
    fmt.Println(result)

    // Output:
    // 9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043
}

GenerateRsaKey

Create the rsa public and private key file in current directory.

Signature:

func GenerateRsaKey(keySize int, priKeyFile, pubKeyFile string) error

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        fmt.Println(err)
    }
}

RsaEncrypt

Encrypt data with public key file useing ras algorithm.

Signature:

func RsaEncrypt(data []byte, pubKeyFileName string) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        return
    }
      
    data := []byte("hello")
    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
      
    fmt.Println(string(decrypted))

    // Output:
    // hello
}

RsaDecrypt

Decrypt data with private key file useing ras algorithm.

Signature:

func RsaDecrypt(data []byte, privateKeyFileName string) []byte

Example:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/cryptor"
)

func main() {
    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        return
    }
      
    data := []byte("hello")
    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
      
    fmt.Println(string(decrypted))

    // Output:
    // hello
}