[add] yao.crypto.AESBase64Encode process

crypto/aes.go

@@ -0,0 +1,58 @@
+package crypto
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"io"
+)
+
+// Base64AESEncode AES encode
+func Base64AESEncode(key []byte, text string) (string, error) {
+
+	plaintext := []byte(text)
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", err
+	}
+
+	// The IV needs to be unique, but not secure. Therefore it's common to
+	// include it at the beginning of the ciphertext.
+	ciphertext := make([]byte, aes.BlockSize+len(plaintext))
+	iv := ciphertext[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		return "", err
+	}
+
+	stream := cipher.NewCFBEncrypter(block, iv)
+	stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)
+
+	// convert to base64
+	return base64.URLEncoding.EncodeToString(ciphertext), nil
+}
+
+// Base64AESDecode AES decode
+func Base64AESDecode(key []byte, cryptoText string) (string, error) {
+	ciphertext, _ := base64.URLEncoding.DecodeString(cryptoText)
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", err
+	}
+
+	// The IV needs to be unique, but not secure. Therefore it's common to
+	// include it at the beginning of the ciphertext.
+	if len(ciphertext) < aes.BlockSize {
+		return "", fmt.Errorf("ciphertext too short")
+	}
+	iv := ciphertext[:aes.BlockSize]
+	ciphertext = ciphertext[aes.BlockSize:]
+
+	stream := cipher.NewCFBDecrypter(block, iv)
+
+	// XORKeyStream can work in-place if the two arguments are the same.
+	stream.XORKeyStream(ciphertext, ciphertext)
+	return fmt.Sprintf("%s", ciphertext), nil
+}

crypto/aes_test.go

@@ -0,0 +1,37 @@
+package crypto
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/yaoapp/gou"
+)
+
+func TestBase64AES(t *testing.T) {
+
+	originalText := "encrypt this golang"
+	key := []byte("example key 1234")
+
+	// encrypt value to base64
+	cryptoText, err := Base64AESEncode(key, originalText)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// encrypt base64 crypto to original value
+	text, err := Base64AESDecode(key, cryptoText)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, "encrypt this golang", text)
+}
+
+func TestBase64AESProcess(t *testing.T) {
+
+	args := []interface{}{"example key 1234", "encrypt this golang"}
+	cryptoText := gou.NewProcess("yao.crypto.AESBase64Encode", args...).Run()
+
+	args = []interface{}{"example key 1234", cryptoText}
+	text := gou.NewProcess("yao.crypto.AESBase64Decode", args...).Run()
+	assert.Equal(t, "encrypt this golang", text)
+}

crypto/process.go

@@ -8,7 +8,8 @@ import (
 func init() {
 	gou.RegisterProcessHandler("yao.crypto.hash", ProcessHash) // deprecated → crypto.Hash
 	gou.RegisterProcessHandler("yao.crypto.hmac", ProcessHmac) // deprecated → crypto.Hash
-
+	gou.RegisterProcessHandler("yao.crypto.AESBase64Encode", processBase64AESEncode)
+	gou.RegisterProcessHandler("yao.crypto.AESBase64Decode", processBase64AESDecode)
 	gou.AliasProcess("yao.crypto.hash", "crypto.Hash")
 	gou.AliasProcess("yao.crypto.hmac", "crypto.Hmac")
 }
@@ -60,3 +61,25 @@ func ProcessHmac(process *gou.Process) interface{} {
 	}
 	return res
 }
+
+func processBase64AESEncode(process *gou.Process) interface{} {
+	process.ValidateArgNums(2)
+	key := process.ArgsString(0)
+	value := process.ArgsString(1)
+	res, err := Base64AESEncode([]byte(key), value)
+	if err != nil {
+		exception.New("error: %s value: %s", 400, err, value).Throw()
+	}
+	return res
+}
+
+func processBase64AESDecode(process *gou.Process) interface{} {
+	process.ValidateArgNums(2)
+	key := process.ArgsString(0)
+	value := process.ArgsString(1)
+	res, err := Base64AESDecode([]byte(key), value)
+	if err != nil {
+		exception.New("error: %s value: %s", 400, err, value).Throw()
+	}
+	return res
+}