Patent ID: 9489254
Filing Date: 2016-11-08
CPC Classification: G06F,H03M

Claim Text:
1. A computer-implemented method for generating and verifying an identified erasure encoded fragment, the method being performed by at least one computer, the method comprising: generating a plurality of erasure encoded fragments based at least in part on an erasure encoding scheme and a data file, the plurality of erasure encoded fragments including at least a first erasure encoded fragment and a second erasure encoded fragment; storing the first erasure encoded fragment and the second erasure encoded fragment; generating an error detection code for the first erasure encoded fragment; storing the error detection code for the first erasure encoded fragment in association with the first erasure encoded fragment and the second erasure encoded fragment; generating a replacement erasure encoded fragment for the first erasure encoded fragment; generating a new error detection code for the replacement erasure encoded fragment; obtaining the error detection code for the first erasure encoded fragment using the association between the error detection code and the second erasure encoded fragment; and verifying the replacement erasure encoded fragment by comparing the error detection code for the first erasure encoded fragment and the new error detection code for the replacement erasure encoded fragment.