= Theory of cryptography
{wiki=Category:Theory_of_cryptography}
The theory of cryptography encompasses the study of techniques for securing communication and data from adversaries and unauthorized access. At its core, cryptography is concerned with methods of ensuring confidentiality, integrity, authenticity, and non-repudiation of information. \#\#\# Key Concepts in Cryptography: 1. **Confidentiality**: Ensuring that information is accessible only to those authorized to have access. This is often achieved through encryption, which transforms readable data into a format that is unreadable without a key.
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