Encryption and decryption using a secret key To secretly communicate with Bob, Alice encrypts her messages before sending them. There are many techniques (cryptographic algorithms) that she can use. All these algorithms have…
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When using public key cryptography, Alice and Bob both have their own key pairs. A key pair consists of a public key and a private key. If the public key is used to…
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Cryptography is “Art of writing or hiding secret”. It is a science of protecting the information from theft or unauthorized access. To do so, important or confidential information is hided as or converted…
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Computer security is an important field of study for most day-to-day transactions. It arises when we turn on our cellular phones, check our voice mail and e-mail, use debit or credit cards, order…
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The field of network and Internet security consists of measures to deter, prevent, detect, and correct security violations that involve the transmission of information. That is a broad statement that covers a host…
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