Java Key Generation

key-generation.java

@Value("${encryption.key}")
String encryptionKey;

private Key generateKey(String salt) throws Exception {
	MessageDigest md = MessageDigest.getInstance("SHA-1");
	byte[] hash = md.digest((encryptionKey + salt).getBytes("UTF-8"));
	byte[] key = Arrays.copyOf(hash, 16);

	return new SecretKeySpec(key, ALG);
}