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Use namespaced labels for transport key derivation.

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akwizgran
2017-11-30 17:36:04 +00:00
parent d2348a4e7d
commit 0f2beee813
2 changed files with 39 additions and 13 deletions
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30
bramble-api/src/main/java/org/briarproject/bramble/api/transport/TransportConstants.java
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@@ -7,7 +7,7 @@ public interface TransportConstants {
/**
* The current version of the transport protocol.
*/
int PROTOCOL_VERSION = 3;
int PROTOCOL_VERSION = 4;
/**
* The length of the pseudo-random tag in bytes.
@@ -80,4 +80,32 @@ public interface TransportConstants {
* The size of the reordering window.
*/
int REORDERING_WINDOW_SIZE = 32;
/**
* Label for deriving Alice's initial tag key from the master secret.
*/
String ALICE_TAG_LABEL = "org.briarproject.bramble.transport/ALICE_TAG_KEY";
/**
* Label for deriving Bob's initial tag key from the master secret.
*/
String BOB_TAG_LABEL = "org.briarproject.bramble.transport/BOB_TAG_KEY";
/**
* Label for deriving Alice's initial header key from the master secret.
*/
String ALICE_HEADER_LABEL =
"org.briarproject.bramble.transport/ALICE_HEADER_KEY";
/**
* Label for deriving Bob's initial header key from the master secret.
*/
String BOB_HEADER_LABEL =
"org.briarproject.bramble.transport/BOB_HEADER_KEY";
/**
* Label for deriving the next period's key in key rotation.
*/
String ROTATE_LABEL = "org.briarproject.bramble.transport/ROTATE";
}