What is Digital Signature and how it works? It is a mathematical stream for demonstrating the authenticity of Digital Signature or documents. A valid signature gives a receipt reason to believe that the message was created by a known sender such that the sender cannot deny having sent the message and the message was not […]
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What is a Firewall ? It is a barrier to keep destructive forces away from your property/assets. Its job is similar to a physical firewall that protects the fire from spreading from one area to another. It protects the network from unauthorized use by attackers. Basically, any device that can control network traffic for security
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In cryptography, substitution is a technique in which plaintext letters are replaced with other letters, numbers, or symbols. Substitution includes substituting plaintext bit patterns with ciphertext bit patterns if the plaintext is considered as a sequence of bits. Caesar Cipher is one of the substitution techniques first used by Julius Caesar. Caesar Cipher The Caesar
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The agile model was proposed in the mid-1990s to overcome the existing faults in the waterfall development methodology. The agile model was established to support a project with rapidly responds to changing needs. It places a higher emphasis on face-to-face contact than on written documentation. The development team should be intentionally kept small (5–9 persons)
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The iterative enhancement model in software engineering combines elements of the linear sequential model with the iterative philosophy of prototyping. In this model, the software is broken down into several modules which are incrementally developed and delivered. Firstly, the development team develops the core module of the system. After that, it is refined into increasing
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