B4J Question String to bytes handling with encryption

#AdditionalJar: bcprov-jdk15on-154
Sub Process_Globals
    
End Sub

Sub AppStart (Args() As String)
    Dim p As String = "123456"
    Dim s As String = "top secret"
    Dim enc As String = Encrypt(s, p)
    Log(enc)
    Dim dec As String = Decrypt(enc, p)
    Log(dec)
End Sub

Private Sub Encrypt (Text As String, Password As String) As String
    Dim c As B4XCipher
    Dim b() As Byte = c.Encrypt(Text.GetBytes("utf8"), Password)
    Dim su As StringUtils
    Return su.EncodeBase64(b)
End Sub

Private Sub Decrypt(EncryptedText As String, Password As String) As String
    Dim c As B4XCipher
    Dim su As StringUtils
    Dim enc() As Byte = su.DecodeBase64(EncryptedText)
    Dim dec() As Byte = c.Decrypt(enc, Password)
    Return BytesToString(dec, 0, dec.Length, "utf8")
End Sub