Added 3des

3des.go

@@ -0,0 +1,42 @@
+package openssl
+
+import "crypto/des"
+
+// Des3ECBEncrypt
+func Des3ECBEncrypt(src, key []byte, padding string) ([]byte, error) {
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	return ECBEncrypt(block, src, key, padding)
+}
+
+// Des3ECBDecrypt
+func Des3ECBDecrypt(src, key []byte, padding string) ([]byte, error) {
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	return ECBDecrypt(block, src, key, padding)
+}
+
+// Des3CBCEncrypt
+func Des3CBCEncrypt(src, key, iv []byte, padding string) ([]byte, error) {
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	return CBCEncrypt(block, src, key, iv, padding)
+}
+
+// Des3CBCDecrypt
+func Des3CBCDecrypt(src, key, iv []byte, padding string) ([]byte, error) {
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	return CBCDecrypt(block, src, key, iv, padding)
+}

3des_test.go

@@ -0,0 +1,55 @@
+package openssl
+
+import (
+	"encoding/base64"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestDes3Encrypt(t *testing.T) {
+	src := []byte("123456")
+
+	// 3DES-ECB, PKCS7_PADDING
+	key := []byte("123456789012345678901234")
+	dst, err := Des3ECBEncrypt(src, key, PKCS7_PADDING)
+	assert.NoError(t, err)
+	t.Log(base64.StdEncoding.EncodeToString(dst))
+	assert.Equal(t, base64.StdEncoding.EncodeToString(dst), "zvq8DAMSQaM=")
+}
+
+func TestDes3ECBDecrypt(t *testing.T) {
+	src, err := base64.StdEncoding.DecodeString("zvq8DAMSQaM=")
+	assert.NoError(t, err)
+
+	// 3DES-ECB, PKCS7_PADDING
+	key := []byte("123456789012345678901234")
+	dst, err := Des3ECBDecrypt(src, key, PKCS7_PADDING)
+	assert.NoError(t, err)
+	t.Log(string(dst))
+	assert.Equal(t, dst, []byte("123456"))
+}
+
+func TestDes3CBCEncrypt(t *testing.T) {
+	src := []byte("123456")
+	iv := []byte("67890678")
+	// 3DES-ECB, PKCS7_PADDING
+	key := []byte("123456789012345678901234")
+	dst, err := Des3CBCEncrypt(src, key, iv, PKCS7_PADDING)
+	assert.NoError(t, err)
+	t.Log(base64.StdEncoding.EncodeToString(dst))
+	assert.Equal(t, base64.StdEncoding.EncodeToString(dst), "elcFR372FXU=")
+}
+
+func TestDes3CBCDecrypt(t *testing.T) {
+	src, err := base64.StdEncoding.DecodeString("elcFR372FXU=")
+	assert.NoError(t, err)
+
+	iv := []byte("67890678")
+
+	// 3DES-ECB, PKCS7_PADDING
+	key := []byte("123456789012345678901234")
+	dst, err := Des3CBCDecrypt(src, key, iv, PKCS7_PADDING)
+	assert.NoError(t, err)
+	t.Log(string(dst))
+	assert.Equal(t, dst, []byte("123456"))
+}

README.md

@@ -13,6 +13,73 @@ The only requirement is the [Go Programming Language](https://golang.org/dl/)
 go get -u github.com/thinkoner/openssl
 ```
 
+## Usage
+
+### AES
+
+The length of the key can be 16/24/32 characters (128/192/256 bits)
+
+AES-ECB:
+
+```go 
+src := []byte("123456")
+key := []byte("1234567890123456")
+dst , _ := openssl.AesECBEncrypt(src, key, openssl.PKCS7_PADDING)
+fmt.Printf(base64.StdEncoding.EncodeToString(dst))  // yXVUkR45PFz0UfpbDB8/ew==
+
+dst , _ = openssl.AesECBDecrypt(dst, key, openssl.PKCS7_PADDING)
+fmt.Println(string(dst)) // 123456
+```
+
+AES-CBC:
+
+```go
+src := []byte("123456")
+key := []byte("1234567890123456")
+iv := []byte("1234567890123456")
+dst , _ := openssl.AesCBCEncrypt(src, key, iv, openssl.PKCS7_PADDING)
+fmt.Println(base64.StdEncoding.EncodeToString(dst)) // 1jdzWuniG6UMtoa3T6uNLA==
+
+dst , _ = openssl.AesCBCDecrypt(dst, key, iv, openssl.PKCS7_PADDING)
+fmt.Println(string(dst)) // 123456
+```
+
+### DES
+
+The length of the key must be 8 characters (64 bits).
+
+DES-ECB:
+
+```go
+openssl.DesECBEncrypt(src, key, openssl.PKCS7_PADDING)
+openssl.DesECBDecrypt(src, key, openssl.PKCS7_PADDING)
+```
+
+DES-CBC:
+
+```go
+openssl.DesCBCEncrypt(src, key, iv, openssl.PKCS7_PADDING)
+openssl.DesCBCDecrypt(src, key, iv, openssl.PKCS7_PADDING)
+```
+
+### 3DES
+
+The length of the key must be 24 characters (192 bits).
+
+3DES-ECB:
+
+```go
+openssl.Des3ECBEncrypt(src, key, openssl.PKCS7_PADDING)
+openssl.Des3ECBDecrypt(src, key, openssl.PKCS7_PADDING)
+```
+
+3DES-CBC:
+
+```go
+openssl.Des3CBCEncrypt(src, key, iv, openssl.PKCS7_PADDING)
+openssl.Des3CBCDecrypt(src, key, iv, openssl.PKCS7_PADDING)
+```
+
 ## License
 
 This project is licensed under the [Apache 2.0 license](LICENSE).