Patent ID: 8677140
Filing Date: 2014-03-18
Classification: G06F,G06Q,G07B

Abstract:
1. A computer-implemented method for representing a list of informational items using a bit array, comprising: converting, by a computer, an informational item to a cryptographic value by evaluating a hash function for at least a portion of the information item using a secure hashing algorithm; extracting a plurality of n-bit samples from the cryptographic value, the n-bit samples including at least a first field and a second field, the first field identifying a group of bits of the bit array, and the second field identifying one or more individual bits within the group of bits; and setting, by the computer, the individual bits to a pre-determined value according to the first field identifying the group of bits and the second field identifying the individual bits within the group of bits, wherein bits in the bit array have a pre-determined initial value different from the pre-determined value.