Breaking RSA Encryption Nick Manners. History of Cryptography  Used to be strictly in the domain of governments… state secrets.  Particularly important.

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Presentation transcript:

Breaking RSA Encryption Nick Manners

History of Cryptography  Used to be strictly in the domain of governments… state secrets.  Particularly important during WWII.  Rise of computing and development led to the need of secure ciphers.

DES  First cipher “approved” by the NSA.  Met with suspicion.  Eventually proven to be too easy to crack, due to small key size.

Paradigm Shift  Paper leads to introduction of asymmetric key cryptography.  Given power of computing publicly available, finally puts good cryptosystems in the public realm.  Most common algorithm today: RSA encryption.

Breaking RSA  Various ways to crack it.  Quantum computers?  Implementation errors.  Solving NP completeness.  Strictly speaking, we’re ignoring other problems, such as validation.

Debate  1. If you could break RSA, should you?  2. What are the implications of a stronger cryptosystem? An unbreakable one?