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Difference between symmetric-key cryptography and asymmetric-key cryptography.
Keys distribution in each technique Symmetric-key: It only needs one key to encrypt and decrypt the message. Both user...
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Implement Diffie Helman Key Exchange Algorithm
The following example implements Diffie Helman Exchange Algorithm. Click here to download the PDF File
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Rail Fence Algorithm
Rail fence cipher The rail-fence technique is an example of transposition technique. It uses a simple algorithm. Steps...
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BlowFish Algorithm
BlowFish was developed by Bruce Schneier. Blowfish is a symmetric block cipher.It encrypts 64 bit block with variable-length key,...
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Explain modified version of Caesar Cipher
We all know in Caesar cipher we replace each alphabet with other alphabet which is 3 positions down the...
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Explain Phishing
Phishing has become a big problem in recent times. In 2004, the estimated losses due to phishing were to...
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Authentication in Network Security
Authentication mechanism helps to establish proof of identity. This process ensures that origin of an electronic document or message...
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Non-repudiation
There are situation where a user sends a message, and later on refuses that he had sent that message...
