Since then, new techniques have emerged and become commonplace in all areas of modern computing. Early encryption techniques were often used in military messaging. Historically, various forms of encryption have been used to aid in cryptography. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients but not to unauthorized users. It is possible to decrypt the message without possessing the key but, for a well-designed encryption scheme, considerable computational resources and skills are required. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor.įor technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. Ideally, only authorized parties can decipher a ciphertext back to plaintext and access the original information. This process converts the original representation of the information, known as plaintext, into an alternative form known as ciphertext. In cryptography, encryption is the process of encoding information. A simple illustration of public-key cryptography, one of the most widely used forms of encryption

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