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