Category Archives: INS

HMAC

WHAT IS HMAC? The full form of HMAC IS Hash Based Message Authentication Code. HMAC = H (K Ꚛ OPAD, H (K Ꚛ IPOD, MESSAGE m)) Where HMAC = final output K = secret key Ꚛ = XOR Operation M = input message m OPAD & IPOD = fixed & different 64 byte string repeated

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Authentication Function

MESSAGE AUTHENTICATION

DEFINITION MESSAGE AUTHENTICATION is provide by the secret keys that is done in case of encryption. MESSAGE AUTHENTICATION is concerned with  ► Protecting integrity of message ► Validating identity of originator ► Non-repudiation of origin. FUNCTIONS OF MESSAGE AUTHENTICATION. There are three functions. DEFINE 1. HASH FUNCTION A feature that maps a message of any size into a constant length hash value,

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KERBEROS REALM

WHAT IS KERBEROS? ▶ It is a trusted key system from MIT. ▶ It provides centralized private key, third-party authentication in a distributed network. DEFINITION: A KERBEROS REALM is an environment consists of a Kerberos server, number of clients of a Kerberos server, number of clients, registered with server & application servers, sharing keys with

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KERBEROS.

◉ INTRODUCTION: In this article, I will give SHORT NOTE ON KERBEROS. ▶ It is a trusted key system from MIT. ▶ It provides centralized private key, third-party authentication in a distributed network. ◎ KERBORES requirements are as follow: Secure Reliable Transparent Scalable It is implemented using an authentication protocol based on Needham – Schroeder.

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