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The replacement of a unit of plaintext
- In colloquial use, the term " code " is often used to mean any method of encryption or concealment of meaning. However, in cryptography, code has a more specific meaning: the replacement of a unit of plaintext (i.e., a meaningful word or phrase) with a code word (for example, "wallaby" replaces "attack at dawn").
en.wikipedia.org/wiki/Cryptography
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3 days ago · Cryptography is a technique of securing information and communications through the use of codes so that only those persons for whom the information is intended can understand and process it. Thus preventing unauthorized access to information. The prefix “crypt” means “hidden” and the suffix “graphy” means “writing”.
In cryptology, a code is a method used to encrypt a message that operates at the level of meaning; that is, words or phrases are converted into something else. A code might transform "change" into "CVGDK" or "cocktail lounge".
Cryptography is the science or study of techniques of secret writing or hidden writing. Cryptography involves two major operations called Encryption and Decryption. Encryption is the process to convert the original text to cipher text by using a key. Original text is plain text and cipher text is encrypted text.
- help@geeksprogramming.com
In colloquial use, the term " code " is often used to mean any method of encryption or concealment of meaning. However, in cryptography, code has a more specific meaning: the replacement of a unit of plaintext (i.e., a meaningful word or phrase) with a code word (for example, "wallaby" replaces "attack at dawn").
Cryptography is a method of protecting information and communications using codes, so that only those for whom the information is intended can read and process it.
- Kathleen Richards
Learn about Cryptography and Secret Codes. When you were a kid, did you have a "Captain Midnight" decoder ring? With it, you could send messages to a friends that no one else could read. Or perhaps you remember using special symbols to write notes to your "squeeze" in class.
Cryptography refers to the techniques and algorithms that are used today for secure communication and data in storage. It incorporates mathematics, computer science, electronics and digital signal processing. Broadly speaking, there are four types of cryptography systems:
