From 6059b964569fb406bbc86a0ccb19e76851fba2b6 Mon Sep 17 00:00:00 2001 From: Andreas Straub Date: Fri, 31 Jul 2015 23:28:09 +0200 Subject: Provide process function for key transport message --- .../crypto/axolotl/XmppAxolotlMessage.java | 33 +++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) (limited to 'src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java') diff --git a/src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java b/src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java index fa6d895a..cf950d6d 100644 --- a/src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java +++ b/src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java @@ -64,6 +64,30 @@ public class XmppAxolotlMessage { } } + public static class XmppAxolotlKeyTransportMessage { + private final String fingerprint; + private final byte[] key; + private final byte[] iv; + + public XmppAxolotlKeyTransportMessage(String fingerprint, byte[] key, byte[] iv) { + this.fingerprint = fingerprint; + this.key = key; + this.iv = iv; + } + + public String getFingerprint() { + return fingerprint; + } + + public byte[] getKey() { + return key; + } + + public byte[] getIv() { + return iv; + } + } + private XmppAxolotlMessage(final Element axolotlMessage, final Jid from) throws IllegalArgumentException { this.from = from; Element header = axolotlMessage.findChild(HEADER); @@ -188,11 +212,18 @@ public class XmppAxolotlMessage { return encryptionElement; } - public byte[] unpackKey(XmppAxolotlSession session, Integer sourceDeviceId) { + private byte[] unpackKey(XmppAxolotlSession session, Integer sourceDeviceId) { byte[] encryptedKey = keys.get(sourceDeviceId); return (encryptedKey != null) ? session.processReceiving(encryptedKey) : null; } + public XmppAxolotlKeyTransportMessage getParameters(XmppAxolotlSession session, Integer sourceDeviceId) { + byte[] key = unpackKey(session, sourceDeviceId); + return (key != null) + ? new XmppAxolotlKeyTransportMessage(session.getFingerprint(), key, getIV()) + : null; + } + public XmppAxolotlPlaintextMessage decrypt(XmppAxolotlSession session, Integer sourceDeviceId) throws CryptoFailedException { XmppAxolotlPlaintextMessage plaintextMessage = null; byte[] key = unpackKey(session, sourceDeviceId); -- cgit v1.2.3