1 package org.bouncycastle.tls.crypto;
2 
3 /**
4  * Interface for MAC services based on HMAC.
5  */
6 public interface TlsHMAC
7     extends TlsMAC
8 {
9     /**
10      * Return the internal block size for the message digest underlying this HMAC service.
11      *
12      * @return the internal block size for the digest (in bytes).
13      */
getInternalBlockSize()14     int getInternalBlockSize();
15 }
16