Perbaikan SEP

internal/services/bpjs/response.go

@@ -7,28 +7,22 @@ import (
 	"crypto/sha256"
 	"encoding/base64"
 	"errors"
-	"fmt"
+
+	lzstring "github.com/daku10/go-lz-string"
 )
 
 // ResponseVclaim decrypts the encrypted response from VClaim API
 func ResponseVclaim(encrypted string, key string) (string, error) {
-	if encrypted == "" {
-		return "", errors.New("encrypted response is empty")
-	}
-	
-	if key == "" {
-		return "", errors.New("decryption key is empty")
-	}
-
 	cipherText, err := base64.StdEncoding.DecodeString(encrypted)
 	if err != nil {
-		return "", fmt.Errorf("failed to decode base64: %w", err)
+		return "", err
 	}
 
 	hash := sha256.Sum256([]byte(key))
+
 	block, err := aes.NewCipher(hash[:])
 	if err != nil {
-		return "", fmt.Errorf("failed to create cipher: %w", err)
+		return "", err
 	}
 
 	if len(cipherText) < aes.BlockSize {
@@ -36,23 +30,20 @@ func ResponseVclaim(encrypted string, key string) (string, error) {
 	}
 
 	iv := hash[:aes.BlockSize]
+
 	if len(cipherText)%aes.BlockSize != 0 {
 		return "", errors.New("cipherText is not a multiple of the block size")
 	}
 
 	mode := cipher.NewCBCDecrypter(block, iv)
 	mode.CryptBlocks(cipherText, cipherText)
-	
-	// Unpad the decrypted data
-	cipherText, err = helper.Unpad(cipherText, aes.BlockSize)
-	if err != nil {
-		return "", fmt.Errorf("failed to unpad: %w", err)
-	}
 
-	// Decompress the data
-	data, err := helper.DecompressFromEncodedUriComponent(string(cipherText))
+	// cipherText, _ = pkcs7.Unpad(cipherText, aes.BlockSize)
+	cipherText = helper.RemovePKCS7Padding(cipherText)
+	data, err := lzstring.DecompressFromEncodedURIComponent(string(cipherText))
+	// data, err := helper.DecompressFromEncodedUriComponent(string(cipherText))
 	if err != nil {
-		return "", fmt.Errorf("failed to decompress: %w", err)
+		return "", err
 	}
 
 	return data, nil