Patent ID: 7925886
Filing Date: 2011-04-12
Classification: H04L

Abstract:
1. A method, comprising: receiving, by a computing system comprising a computer processor, first source data (S1); first applying, by said computing system, a first hash function to said first source data (S1); generating as a result of said first applying, by said first hash function, a first hash output (H1); performing, by said computing system, an operation relating, said first source data (S1) with at least a portion of said first hash output (H1) to generate second source data (S2); second applying, by said computing system, said first hash function to said second source data (S2); and generating as a result of said second applying, by said computer processor executing said first hash function, a second hash output (H2), wherein the second hash output (H2) is used to prevent unauthorized access to one or more computing systems including said computing system.