AES uses static zero IV

Code reviewSecuritySenior–Staff~30 min

Review this Java AES helper used to encrypt user records.

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1private static final byte[] IV = new byte[16]; // all zeros

2private static final SecretKeySpec KEY = loadKey();

4public static byte[] encrypt(byte[] plaintext) throws Exception {

5 Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");

6 c.init(Cipher.ENCRYPT_MODE, KEY, new IvParameterSpec(IV));

7 return c.doFinal(plaintext);

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