Showing papers on "Message authentication code published in 1982"
Patent•
IBM1
TL;DR: In this paper, a method and apparatus for testing the validity of personal identification numbers (PIN) entered at a transaction terminal of an electronic funds transfer network in which the PIN is not transmitted through the network is presented.
Abstract: A method and apparatus for testing the validity of personal identification numbers (PIN) entered at a transaction terminal of an electronic funds transfer network in which the PIN is not transmitted through the network. The PIN and the personal account number (PAN) are used to derive an authorisation parameter (DAP). A unique message is sent with the PAN to the host processor where the PAN is used to identify a valid authorisation parameter (VAP). The VAP is used to encode the unique message and the result (a message authentication code MAC) transmitted back to the transaction terminal. The terminal generates a parallel message authentication code by using the DAP to encode the unique message. The two MAC's are compared and the result of the comparison used to determine the validity of the PIN.
10 citations
01 Jan 1982
TL;DR: The concept of public key cryptosysterns is introduced; brief reference is made to the ‘knapsack’ system, whilst the so-called RSA system is treated at greater length and how the invention of publicKey systems has affected the task of key distribution within networks is seen.
Abstract: The concept of public key cryptosysterns is introduced; brief reference is made to the ‘knapsack’ system, whilst the so-called RSA system is treated at greater length. The need for message authentication leads naturally to a consideration of the role of public key cryptosystems as generators of digital signatures. Finally we see how the invention of public key systems has affected the task of key distribution within networks.