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POandroid encryption
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  1. POandroid encryption
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    copied!<p>I want to encrypt/decrypt some passwords in the SQLite database of my application. To do that I have searched on the internet and I have found the AES algorithm. I have this code:</p> <pre><code>public String encript(String dataToEncrypt) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException { // I'm using AES encription if(!dataToEncrypt.equals("")){ String key = "FMVWf8d_sm#fz"; Cipher c = Cipher.getInstance("AES"); SecretKeySpec k; try { k = new SecretKeySpec(key.getBytes(), "AES"); c.init(Cipher.ENCRYPT_MODE, k); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return new String(c.doFinal(Base64.decode(dataToEncrypt))); } return ""; } public String decript(String encryptedData) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException { if(!encryptedData.equals("")){ String key = "FMVWf8d_sm#fz"; Cipher c = Cipher.getInstance("AES"); SecretKeySpec k = new SecretKeySpec(Base64.decode(key), "AES"); c.init(Cipher.DECRYPT_MODE, k); return new String(c.doFinal(Base64.decode(encryptedData))); } return ""; } </code></pre> <p>After running this I get this error on encrypt method:</p> <blockquote> <p>01-27 14:50:51.698: ERROR/ACTIVITY(782): java.security.InvalidKeyException: Key length not 128/192/256 bits.</p> </blockquote> <p>I have seen some other cases here on stackoverflow but I want to give the key to the AES not to generate it...</p> <p>Can somebody help me with this? If there is other encryption method to use but without using another jars or external classes and to let me give the key.</p> <p>Thank you very much! </p>
 

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