fix: auth flow

server/crypto/aes.go

@@ -3,71 +3,40 @@ package crypto
 import (
 	"crypto/aes"
 	"crypto/cipher"
-	"crypto/rand"
-	"io"
 
 	"github.com/authorizerdev/authorizer/server/constants"
 	"github.com/authorizerdev/authorizer/server/envstore"
 )
 
-// EncryptAES encrypts data using AES algorithm
-func EncryptAES(text []byte) ([]byte, error) {
+var bytes = []byte{35, 46, 57, 24, 85, 35, 24, 74, 87, 35, 88, 98, 66, 32, 14, 05}
+
+// EncryptAES method is to encrypt or hide any classified text
+func EncryptAES(text string) (string, error) {
 	key := []byte(envstore.EnvStoreObj.GetStringStoreEnvVariable(constants.EnvKeyEncryptionKey))
-	c, err := aes.NewCipher(key)
-	var res []byte
+	block, err := aes.NewCipher(key)
 	if err != nil {
-		return res, err
+		return "", err
 	}
-
-	// gcm or Galois/Counter Mode, is a mode of operation
-	// for symmetric key cryptographic block ciphers
-	// - https://en.wikipedia.org/wiki/Galois/Counter_Mode
-	gcm, err := cipher.NewGCM(c)
-	if err != nil {
-		return res, err
-	}
-
-	// creates a new byte array the size of the nonce
-	// which must be passed to Seal
-	nonce := make([]byte, gcm.NonceSize())
-	// populates our nonce with a cryptographically secure
-	// random sequence
-	if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
-		return res, err
-	}
-
-	// here we encrypt our text using the Seal function
-	// Seal encrypts and authenticates plaintext, authenticates the
-	// additional data and appends the result to dst, returning the updated
-	// slice. The nonce must be NonceSize() bytes long and unique for all
-	// time, for a given key.
-	return gcm.Seal(nonce, nonce, text, nil), nil
+	plainText := []byte(text)
+	cfb := cipher.NewCFBEncrypter(block, bytes)
+	cipherText := make([]byte, len(plainText))
+	cfb.XORKeyStream(cipherText, plainText)
+	return EncryptB64(string(cipherText)), nil
 }
 
-// DecryptAES decrypts data using AES algorithm
-func DecryptAES(ciphertext []byte) ([]byte, error) {
+// DecryptAES method is to extract back the encrypted text
+func DecryptAES(text string) (string, error) {
 	key := []byte(envstore.EnvStoreObj.GetStringStoreEnvVariable(constants.EnvKeyEncryptionKey))
-	c, err := aes.NewCipher(key)
-	var res []byte
+	block, err := aes.NewCipher(key)
 	if err != nil {
-		return res, err
+		return "", err
 	}
-
-	gcm, err := cipher.NewGCM(c)
+	cipherText, err := DecryptB64(text)
 	if err != nil {
-		return res, err
+		return "", err
 	}
-
-	nonceSize := gcm.NonceSize()
-	if len(ciphertext) < nonceSize {
-		return res, err
-	}
-
-	nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
-	plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
-	if err != nil {
-		return res, err
-	}
-
-	return plaintext, nil
+	cfb := cipher.NewCFBDecrypter(block, bytes)
+	plainText := make([]byte, len(cipherText))
+	cfb.XORKeyStream(plainText, []byte(cipherText))
+	return string(plainText), nil
 }