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- Three-pass_protocol abstract "In cryptography, the three-pass protocol for sending messages is a framework which allows one party to securely send a message to a second party without the need to exchange or distribute encryption keys. This message protocol should not be confused with various other algorithms which use 3 passes for authentication. It is called the three-pass protocol because the sender and the receiver exchange three encrypted messages. The first three-pass protocol was developed by Adi Shamir circa 1980, and is described in more detail in a later section. The basic concept of the Three-Pass Protocol is that each party has a private encryption key and a private decryption key. The two parties use their keys independently, first to encrypt the message, and then to decrypt the message.The protocol uses an encryption function E and a decryption function D. The encryption function uses an encryption key e to change a plaintext message m into an encrypted message, or ciphertext, E(e,m). Corresponding to each encryption key e there is a decryption key d which allows the message to be recovered using the decryption function, D(d,E(e,m))=m. Sometimes the encryption function and decryption function are the same.In order for the encryption function and decryption function to be suitable for the Three-Pass Protocol they must have the property that for any message m, any encryption key e with corresponding decryption key d and any independent encryption key k, D(d,E(k,E(e,m))) = E(k,m). In other words, it must be possible to remove the first encryption with the key e even though a second encryption with the key k has been performed. This will always be possible with a commutative encryption. A commutative encryption is an encryption that is order-independent, i.e. it satisfies E(a,E(b,m))=E(b,E(a,m)) for all encryption keys a and b and all messages m. Commutative encryptions satisfy D(d,E(k,E(e,m))) = D(d,E(e,E(k,m))) = E(k,m). The Three-Pass Protocol works as follows: The sender chooses a private encryption key s and a corresponding decryption key t. The sender encrypts the message m with the key s and sends the encrypted message E(s,m) to the receiver. The receiver chooses a private encryption key r and a corresponding decryption key q and super-encrypts the first message E(s,m) with the key r and sends the doubly encrypted message E(r,E(s,m)) back to the sender. The sender decrypts the second message with the key t. Because of the commutativity property described above D(t,E(r,E(s,m)))=E(r,m) which is the message encrypted with only the receiver's private key. The sender sends this to the receiver.The receiver can now decrypt the message using the key q, namely D(q,E(r,m))=m the original message.Notice that all of the operations involving the sender's private keys s and t are performed by the sender, and all of the operations involving the receiver's private keys r and q are performed by the receiver, so that neither party needs to know the other party's keys.".
- Three-pass_protocol wikiPageID "14580492".
- Three-pass_protocol wikiPageLength "8076".
- Three-pass_protocol wikiPageOutDegree "29".
- Three-pass_protocol wikiPageRevisionID "550001469".
- Three-pass_protocol wikiPageWikiLink Adi_Shamir.
- Three-pass_protocol wikiPageWikiLink Authentication.
- Three-pass_protocol wikiPageWikiLink Basis_(linear_algebra).
- Three-pass_protocol wikiPageWikiLink Basis_vector.
- Three-pass_protocol wikiPageWikiLink Binary_number.
- Three-pass_protocol wikiPageWikiLink Binary_numeral_system.
- Three-pass_protocol wikiPageWikiLink Category:Asymmetric-key_algorithms.
- Three-pass_protocol wikiPageWikiLink Category:Cryptographic_protocols.
- Three-pass_protocol wikiPageWikiLink Ciphertext.
- Three-pass_protocol wikiPageWikiLink Circular_shift.
- Three-pass_protocol wikiPageWikiLink Cryptography.
- Three-pass_protocol wikiPageWikiLink Discrete_logarithm.
- Three-pass_protocol wikiPageWikiLink Encryption.
- Three-pass_protocol wikiPageWikiLink Encryption_key.
- Three-pass_protocol wikiPageWikiLink Exponentiation.
- Three-pass_protocol wikiPageWikiLink Fermats_Little_Theorem.
- Three-pass_protocol wikiPageWikiLink Fermats_little_theorem.
- Three-pass_protocol wikiPageWikiLink Finite_field.
- Three-pass_protocol wikiPageWikiLink James_Massey.
- Three-pass_protocol wikiPageWikiLink Jim_K._Omura.
- Three-pass_protocol wikiPageWikiLink Key_(cryptography).
- Three-pass_protocol wikiPageWikiLink Lagranges_theorem_(group_theory).
- Three-pass_protocol wikiPageWikiLink Man-in-the-middle_attack.
- Three-pass_protocol wikiPageWikiLink Multiple_encryption.
- Three-pass_protocol wikiPageWikiLink Normal_basis.
- Three-pass_protocol wikiPageWikiLink Order_(group_theory).
- Three-pass_protocol wikiPageWikiLink Plaintext.
- Three-pass_protocol wikiPageWikiLink Prime_number.
- Three-pass_protocol wikiPageWikiLink Row_and_column_vectors.
- Three-pass_protocol wikiPageWikiLink Row_vector.
- Three-pass_protocol wikiPageWikiLink Superencryption.
- Three-pass_protocol wikiPageWikiLinkText "Three-pass protocol".
- Three-pass_protocol wikiPageWikiLinkText "three-pass protocol".
- Three-pass_protocol hasPhotoCollection Three-pass_protocol.
- Three-pass_protocol wikiPageUsesTemplate Template:Cryptography_navbox.
- Three-pass_protocol wikiPageUsesTemplate Template:US_patent.
- Three-pass_protocol subject Category:Asymmetric-key_algorithms.
- Three-pass_protocol subject Category:Cryptographic_protocols.
- Three-pass_protocol hypernym Framework.
- Three-pass_protocol type Software.
- Three-pass_protocol type Algorithm.
- Three-pass_protocol type Protocol.
- Three-pass_protocol comment "In cryptography, the three-pass protocol for sending messages is a framework which allows one party to securely send a message to a second party without the need to exchange or distribute encryption keys. This message protocol should not be confused with various other algorithms which use 3 passes for authentication. It is called the three-pass protocol because the sender and the receiver exchange three encrypted messages.".
- Three-pass_protocol label "Three-pass protocol".
- Three-pass_protocol sameAs Massey-Omura-Schema.
- Three-pass_protocol sameAs Protocolo_tres_envíos.
- Three-pass_protocol sameAs m.03d8k94.
- Three-pass_protocol sameAs Q1907602.
- Three-pass_protocol sameAs Q1907602.
- Three-pass_protocol wasDerivedFrom Three-pass_protocol?oldid=550001469.
- Three-pass_protocol isPrimaryTopicOf Three-pass_protocol.