The encryption and decryption is based upon the type of cryptography scheme being employed and some form of key. Plaintext is encrypted into cipher text, which will in turn (usually) be decrypted into usable plaintext. In cryptography, we start with the unencrypted data, referred to as plaintext. Key exchange: The method by which crypto keys are shared between sender and receiver.Non-repudiation: A mechanism to prove that the sender really sent this message.Integrity: Assuring the receiver that the received message has not been altered in any way from the original.Authentication: The process of proving one's identity.Privacy/confidentiality: Ensuring that no one can read the message except the intended receiver.

There are five primary functions of cryptography which are,

Cryptography is necessary when communicating over any untrusted medium, which includes just about any network, particularly the Internet. For this we are using the Encryption Decryption techniques which is done by using a technique Called Cryptography.Ĭryptography is the science of writing in secret code and is an ancient art the first documented use of cryptography in writing dates back to circa 1900 B.C. Why we need to use this Encryption and decryption processes, because in a Client -Server Application Security is a very important Factor.įor Example when sending the Confidential Data such as Password between the client and server we need to make sure that the data is secured &protected.īy using this process we can hide original data and display some junk data based on this we can provide some security for our data. Decryption is the process of translating random and meaningless data to plain text. Is Encryption/Decryption and how it is used inĮncryption is the process of translating plain text data into something that appears to be random and meaningless.

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