# Encryption & RSA

DevFeed: [Encryption & RSA](<https://devfeed.tech/articles/encryption-rsa-40234.md>)

Original publisher: [Read original article](<https://www.jeremykun.com/2011/07/29/encryption-rsa/>)

Published: 2011-07-29T23:55:57Z

Content type: article

Language: en

Sources: [Jeremy Kun](<https://devfeed.tech/sources/jeremy-kun.md>)

Topics: [Encryption](<https://devfeed.tech/topics/encryption.md>), [Cryptography](<https://devfeed.tech/topics/cryptography.md>), [Mathematics](<https://devfeed.tech/topics/mathematics.md>)

Tags: [computing](<https://devfeed.tech/tags/computing.md>), [cryptography](<https://devfeed.tech/tags/cryptography.md>), [encryption](<https://devfeed.tech/tags/encryption.md>), [java](<https://devfeed.tech/tags/java.md>), [mathematics](<https://devfeed.tech/tags/mathematics.md>), [primes](<https://devfeed.tech/tags/primes.md>), [programming](<https://devfeed.tech/tags/programming.md>), [rsa](<https://devfeed.tech/tags/rsa.md>)

## AI overview

This article introduces cryptography as an application of number theory and begins explaining the historical shift from shared-secret encryption to public-key methods, including RSA.

## Source excerpt

This post assumes working knowledge of elementary number theory. Luckily for the non-mathematicians, we cover all required knowledge and notation in our number theory primer. So Three Thousand Years of Number Theory Wasn't Pointless It's often tough to come up with concrete applications of pure mathematics. In fact, before computers came along mathematics was used mostly for navigation, astronomy, and war. In the real world it almost always coincided with the physical sciences.