Quantum Computing’s Threat to Public-Key Cryptosystems

Fittingly, while we do know a little about ‘what’, we actually know little about ‘where’ (in time) we will get commercially viable quantum computers. The ‘what’ includes massively increased computational power. The ‘when’ is thought to be some time within the next 15 to 30 years.

http://www.securityweek.com/quantum-computings-threat-public-key-cryptosystems