Android Question RSA with b4a

[omidaghakhani1368]

Hi
I can encrypt data with algoritm RSA with below code
but i cannot decrypt data
(public and private key created with php)

    Dim su As StringUtils
    Dim data() As Byte = su.DecodeBase64(File.ReadString(File.DirAssets,"public.txt"))
    Dim p1 As KeyPairGenerator
    Dim c1 As Cipher
   
    p1.Initialize("RSA",1024)
    p1.PublicKeyFromBytes(data)
   
    c1.Initialize("RSA/ECB/PKCS1Padding")
   
    Dim d1() As Byte
    d1 = c1.Encrypt(r1.StringToBytes("ali","UTF8"),p1.PublicKey,False)
   
    Dim res As String
    res = su.EncodeBase64(d1)