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39 lines
1.3 KiB
Java
39 lines
1.3 KiB
Java
package org.briarproject.api.transport;
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import org.briarproject.api.TransportId;
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import org.briarproject.api.contact.ContactId;
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import org.briarproject.api.crypto.SecretKey;
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import org.briarproject.api.lifecycle.Service;
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import java.util.Collection;
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/**
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* Responsible for managing transport keys and recognising the pseudo-random
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* tags of incoming streams.
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*/
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public interface KeyManager extends Service {
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/**
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* Informs the key manager that a new contact has been added. Derives and
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* stores transport keys for communicating with the contact.
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* {@link StreamContext StreamContexts} for the contact can be created
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* after this method has returned.
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*/
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void addContact(ContactId c, Collection<TransportId> transports,
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SecretKey master, long timestamp, boolean alice);
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/**
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* Returns a {@link StreamContext} for sending a stream to the given
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* contact over the given transport, or null if an error occurs or the
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* contact does not support the transport.
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*/
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StreamContext getStreamContext(ContactId c, TransportId t);
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/**
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* Looks up the given tag and returns a {@link StreamContext} for reading
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* from the corresponding stream, or null if an error occurs or the tag was
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* unexpected.
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*/
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StreamContext getStreamContext(TransportId t, byte[] tag);
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}
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