Android Question Encrypt Text with B4XCipher

H

hanyelmehy

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i need to Encrypt Text with B4XCipher ,save it to sqlite (as string) ,then able to get it back
this code not work with me
B4X: 
Sub MakeText(text As String) As String
    Dim c As B4XCipher,CC() As Byte
    CC=c.Encrypt(text.GetBytes("utf8"),PPWW)
    Return BytesToString(CC,0,CC.Length, "utf8")
End Sub
Sub GetMyText(tx1 As String) As String
    Dim En1() As Byte =tx1.GetBytes("utf8")
   
    Dim c As B4XCipher
    Dim b() As Byte = c.Decrypt(En1,PPWW)
    Return BytesToString(b, 0, b.Length, "utf8")
End Sub
 
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H

hanyelmehy

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Longtime User
Solved ,this code work
B4X: 
Sub MakeText(text As String) As String
    Dim c As B4XCipher,CC() As Byte
    CC=c.Encrypt(text.GetBytes("UTF-8"),PPWW)
    Dim B64 As StringUtils
    Return B64.EncodeBase64(CC)
End Sub
Sub GetMyText(tx1 As String) As String
    Dim B64 As StringUtils
    Dim En1() As Byte =B64.DecodeBase64(tx1)
    Dim c As B4XCipher
    Dim b() As Byte = c.Decrypt(En1,PPWW)
    Return BytesToString(b, 0, b.Length, "UTF-8")
End Sub
 
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DonManfred

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You should not use BytesToString on the encrypted data. It is not a String.
Convert the encrypted data to base64 and save this base64 string to your Database.

When reading from Database you start with decoding the base64 to a bytearray. Then decrypt this bytearray.
 
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hanyelmehy

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Sasuke Sama said:
Can you link the b4xcipher i cant find it in the search @-@
Click to expand...

[B4X] B4XEncryption

This library allows you to encrypt or decrypt data using the AES encryption method. To prevent confusion, B4XEncryptino is not a b4xlib and is made of three platform specific libraries: B4XEncryption - B4A jB4XEncryption - B4J iEncryption - B4i (Encrypt and Decrypt methods) It is simple to use...
www.b4x.com
 
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