1package eu.siacs.conversations.crypto.sasl;
 2
 3import com.google.common.hash.HashFunction;
 4import com.google.common.hash.Hashing;
 5
 6import eu.siacs.conversations.entities.Account;
 7
 8public class ScramSha1 extends ScramMechanism {
 9
10    public static final String MECHANISM = "SCRAM-SHA-1";
11
12    public ScramSha1(final Account account) {
13        super(account, ChannelBinding.NONE);
14    }
15
16    @Override
17    protected HashFunction getHMac(final byte[] key) {
18        return (key == null || key.length == 0)
19                ? Hashing.hmacSha1(EMPTY_KEY)
20                : Hashing.hmacSha1(key);
21    }
22
23    @Override
24    protected HashFunction getDigest() {
25        return Hashing.sha1();
26    }
27
28    @Override
29    public int getPriority() {
30        return 20;
31    }
32
33    @Override
34    public String getMechanism() {
35        return MECHANISM;
36    }
37}