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In cryptography, security (engineering) protocol notation, also known as protocol narrations [1] and Alice & Bob notation, is a way of expressing a protocol of correspondence between entities of a dynamic system, such as a computer network. In the context of a formal model, it allows reasoning about the properties of such a system.
Here, Alice initiates the communication to Bob . is a server trusted by both parties. In the communication: . and are identities of Alice and Bob respectively; is a symmetric key known only to and ; is a symmetric key known only to and ; and are nonces generated by and respectively; is a symmetric, generated key, which will be the session key of the session between and ; The protocol ...
Note that the server cannot transform C 1, C 2, …, C t, C t+1, …, C m to another form for Bob to decrypt using the re-encryption key because the tag of these m encrypted messages, namely ‘Private’ or 'toShareWithFamily', does not match with the tag of the re-encryption key. Also note that the server cannot retrieve any of the messages ...
For example, "How can Bob send a private message M to Alice in a public-key cryptosystem?" [2] is believed to be easier to describe and understand than if the hypothetical people were simply named A and B as in "How can B send a private message M to A in a public-key cryptosystem?"
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A private server is a reimplementation in online game servers, typically as clones of proprietary commercial software by a third party of the game community. The private server is often not made or sanctioned by the original company. Private servers often host MMORPG genre games such as World of Warcraft, Runescape, and MapleStory. These ...
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