Documentation

Cryptlib.Protocols.GroupComm.GroupChatKatzenqt1.Member.Membership

The membership hash #

What a message's membership_hash says of its sender's view of the group, as katzenqt's canonical_membership_hash computes it: SHA-256, under a domain, of the members' keys, each once, in byte order. A member counts itself as write_cap[32:]. Hashing keys rather than whole read caps makes every read cap of one member count once.

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def Cryptlib.Protocols.GroupComm.GroupChatKatzenqt1.Member.membershipDomain :
List UInt8
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    def Cryptlib.Protocols.GroupComm.GroupChatKatzenqt1.Member.memberKeys (readCaps : List ByteArray) :
    List (List UInt8)

    The keys of readCaps, each once, in byte order.

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      def Cryptlib.Protocols.GroupComm.GroupChatKatzenqt1.Member.membershipHash (readCaps : List ByteArray) :
      ByteArray
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