B4A Library SecureMyText - AES256PasswordBasedEncryption-Decryption

This is a wrap for this Github project. Author of this project is rishelarora

I just wrote the wrapper to be able to use the Githubproject in B4A.

AES256PasswordBasedEncryption-Decryption A library that lets you use the AES 256 password based encryption/decryption for your android application in the easiest manner.

SecureMyText
Author: Github rishelarora - DonManfred (wrapper)
Version: 1

• SecureMyText
  Methods:
  • EncryptToFinalTransferText (str As String) As String
  • Initialize (EventName As String, password As String)
  • IsInitialized As Boolean
  • decrypt (str As String) As String
  • encrypt (str As String) As String
  Properties:
  • IterationCount As Int [write only]

 

[MarcoRome]

+30

 

[davidt]

Nice work on this library Don, but I am getting an error when I attempt to add to my project.
I can confirm that the android-support-v4.jar resides in the c:\Program Files (x86)\Anywhere Software\Basic4Android\Libraries directory.

Am I missing something else?

 

[DonManfred]

Am I missing something else?

The maven repository installed in SDK-Manager? See Setupinfo for B4A 6

 

[davidt]

Thanks. Installing now. I had selected Android Support Library instead of Android Support Repository.

 

[Reids]

I got error while decrypting the text, encrypt work well but the decrypting is not working:

** Activity (main) Create, isFirst = true **
Error occurred on line: 85 (Main)
java.lang.StringIndexOutOfBoundsException: length=25; regionStart=0; regionLength=-13
    at java.lang.String.startEndAndLength(String.java:583)
    at java.lang.String.substring(String.java:1464)
    at rage.aes.secureencryptanddecrypt.SecureMyText.decrypt(SecureMyText.java:114)
    at de.donmanfred.SecureMyTextWrapper.decrypt(SecureMyTextWrapper.java:85)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:703)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:337)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:247)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)

My Code :

   secure.Initialize("secure","testing")
   Dim wew As String=secure.encrypt("TESTING")
   ToastMessageShow(wew,True)
   Dim buset As String=secure.decrypt(wew)
   ToastMessageShow(buset,True)

More question, the encrypted string didn't have fixed value? it always changed on every encrypt process

 

[DonManfred]

I got error while decrypting the text, encrypt work well but the decrypting is not working:

have you tried to use EncryptToFinalTransferText to encrypt? The decrypt method seems to be based on this output as you can see in github project...