I am getting this error
javax.crypto.IllegalBlockSizeException: error:0606506D:digital envelope routines:EVP_DecryptFinal_ex:wrong final block length
when I try to decrypt a text longer than 16 chars.
Here's the code:
As I've understood it, there's a problem with padding. Could someone help me out with that? I don't want to try&error with this (changing parameters to NoPadding, etc.)
javax.crypto.IllegalBlockSizeException: error:0606506D:digital envelope routines:EVP_DecryptFinal_ex:wrong final block length
when I try to decrypt a text longer than 16 chars.
Here's the code:
B4X:
Sub Decrypt(encryptedData As String ) As String
Dim kg As KeyGenerator
Dim c As Cipher
Dim B64 As Base64
Dim bconv As ByteConverter
Dim md As MessageDigest
Dim p As String
Dim data(0) As Byte
Dim iv(0) As Byte
Dim vec As String
vec=filevec
p=filepw
iv = vec.GetBytes("UTF8")
c.Initialize("DESEDE/CBC/PKCS5Padding")
c.InitialisationVector = iv
kg.Initialize("DESEDE")
kg.KeyFromBytes(md.GetMessageDigest(p.GetBytes("UTF8"), "MD5"))
Try
data = B64.DecodeStoB(encryptedData)
data = c.Decrypt(data, kg.Key, True)
Return bconv.StringFromBytes(data, "UTF8")
Catch
Msgbox(LastException.Message, "Decode not possible")
Return "Nope"
End TryAs I've understood it, there's a problem with padding. Could someone help me out with that? I don't want to try&error with this (changing parameters to NoPadding, etc.)