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INTRODUCTION TO CRYPTOGRAPHYCryptographyThe word cryptography is derived from Greek words kryptos, which means hidden and graphein, meaning to write, this is the process of making and by using codes to secure transmission of the information.EncryptionEncryption is the procedure of converting an original message into a form which is not readable by unauthorized individuals.DecryptionDecryption is process of converting cipher text message back into plaintext.CryptanalysisCryptanalysis is process of obtaining original message from encrypted message without knowing the algorithms and keys used to perform encryption.CryptologyCryptology is science of encryption that combines cryptography and cryptanalysis both
Risk Control Strategies Once the ranked vulnerability risk worksheet has created, they should choose one of following 4 strategies to control each risk: • Apply safeguards wh
#questioAn elliptic curve y^2=x^3+ax+b(mod29) includes points P=(7, 15) and Q=(16, 13) a)Determine the equation of the crve b) Determine all values of x for which there is no point
Host-Based IDS A host-based IDS (HIDS) resides on a particular computer or server and monitors activity only on that system. HIDS also called as system integrity verifiers as th
implementing password policy in organisation
Example : UCSF Medical Center In the year 2002, the University of California, San Francisco (UCSF) Medical Center received an email message from someone who claimed to be a doct
What is problem formulation in network security
What is the concept of topology?
Short term Scheduler function , also shown as a dispatcher runs most frequently, and creates the finest-grained decision of which program could run next. This scheduler is called
Repeater known as regenerator ; it is an electronic machine that performs only at physical layer. It gets the signal in the network before it becomes loss or weak, recreates the
Convert (111011)2 to ( )10
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