Use of graphics processors as parallel math co-processors...

Details Use of graphics processors as parallel math co-processors... Use of graphics processors as parallel math co-processors...

2011-04-19

2011-04-19

Zand, Kambiz (Department: 2835)

Cryptography

Key management

Key escrow or recovery

Reexamination Certificate

active

07929707

ABSTRACT:
In a computer system having a central processing unit (CPU) and a graphics processing unit (GPU), a system, method and computer program product for recovering a password used to encrypt a plaintext, including (a) generating N passwords on the CPU; (b) providing the N passwords to the GPU; (c) for each of the N passwords, calculating a transformed value from the password on the GPU, wherein the calculating is performed in parallel for all the N passwords provided to the GPU; (d) providing the N transformed values to the CPU; (e) at the CPU, testing the N transformed values for correctness; and (f) if none of the N transformed values are correct, repeating steps (a)-(e) for the next set of N passwords; (g) informing the user of a correct password.

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