// 
// Decompiled by Procyon v0.6.0
// 

package io.netty.handler.codec.quic;

import io.netty.util.internal.ObjectUtil;
import java.nio.ByteBuffer;

final class HmacSignQuicConnectionIdGenerator implements QuicConnectionIdGenerator
{
    static final QuicConnectionIdGenerator INSTANCE;
    
    private HmacSignQuicConnectionIdGenerator() {
    }
    
    @Override
    public ByteBuffer newId(final int length) {
        throw new UnsupportedOperationException("HmacSignQuicConnectionIdGenerator should always have an input to sign with");
    }
    
    @Override
    public ByteBuffer newId(final ByteBuffer buffer, final int length) {
        ObjectUtil.checkNotNull(buffer, "buffer");
        ObjectUtil.checkPositive(buffer.remaining(), "buffer");
        ObjectUtil.checkInRange(length, 0, this.maxConnectionIdLength(), "length");
        return Hmac.sign(buffer, length);
    }
    
    @Override
    public int maxConnectionIdLength() {
        return Quiche.QUICHE_MAX_CONN_ID_LEN;
    }
    
    @Override
    public boolean isIdempotent() {
        return true;
    }
    
    static {
        INSTANCE = new HmacSignQuicConnectionIdGenerator();
    }
}