# 13: RSA and Digital Signatures

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RSA was among the first public-key cryptography developed. It was first described in 1978, and is named after its creators, Ron Rivest, Adi Shamir, and Len Adleman.1 Although “textbook” RSA by itself is not a secure encryption scheme, it is a fundamental ingredient for public-key cryptography

1Clifford Cocks developed an equivalent scheme in 1973, but it was classified since he was working for British intelligence.

13: RSA and Digital Signatures is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Mike Rosulek.