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@ -1,5 +1,9 @@
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# MSC4081: Claim fallback key on network failures
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*Abstract: This MSC aims to increase the robustness of the Olm session setup protocol over federation.
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With this MSC, transient network failures over federation will not cause undecryptable messages due to
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failing to claim OTKs.*
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In order for clients to establish secure communication channels between devices, they need to "claim" one-time keys
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(OTKs) that were previously uploaded by the device they wish to talk to. One-time keys, as the name suggests, must
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only be used once. However, this presents several problems:
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