> For the complete documentation index, see [llms.txt](https://dagora.gitbook.io/guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dagora.gitbook.io/guides/beginner/lessons/cryptography.md).

# Cryptography

A mathematical method for securing communications or data between one or more parties.

Cryptography is used in a variety of applications, including email, file sharing, blockchain, and secure communication. This form of security has been used for centuries, and its modern applications continue to evolve as technology advances.