Add Encrypt() and Decrypt() functionality

pkg/transcrypt/decrypt.go

@@ -0,0 +1,47 @@
+package transcrypt
+
+import (
+	"bytes"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"reflect"
+
+	"github.com/minio/sio"
+)
+
+func Decrypt(key string, data string) (any, error) {
+	if key == "" {
+		return nil, errors.New("key is empty")
+	}
+	if data == "" {
+		return nil, errors.New("data is nil")
+	}
+
+	var err error
+	var encryptedData []byte
+	var kind reflect.Kind
+	var cryptoConfig sio.Config
+
+	if encryptedData, kind, cryptoConfig, err = decodeHexString(key, data); err != nil {
+		return nil, err
+	}
+
+	var decryptedHexData *bytes.Buffer
+	decryptedHexData = bytes.NewBuffer(make([]byte, 0))
+	if _, err = sio.Decrypt(decryptedHexData, bytes.NewBuffer(encryptedData), cryptoConfig); err != nil {
+		return nil, fmt.Errorf("decrypt failed: %w", err)
+	}
+
+	var decryptedData []byte
+	if decryptedData, err = hex.DecodeString(string(decryptedHexData.Bytes())); err != nil {
+		return nil, fmt.Errorf("decode decrypted hex data failed: %w", err)
+	}
+
+	var outputValue reflect.Value
+	if outputValue, err = convertBytesToValue(decryptedData, kind); err != nil {
+		return nil, err
+	}
+
+	return outputValue.Interface(), nil
+}