Patent ID: 7801308
Filing Date: 2010-09-21
Classification: H04L,H04N

Abstract:
1. A method for protecting private cryptographic keys, comprising: receiving a set of private cryptographic keys at a device enabled to read digital content from a digital content source; encoding said set of private cryptographic keys at said device by performing a matrix transposition of a portion of said set of private cryptographic keys using a convolution interleaving method such that the resultant transposed matrix dimensions determined by a specified set of bits in a key in said set of private cryptographic keys, wherein the transposed matrix rows and columns represent the encoded private cryptographic keys; and storing said set of encoded private cryptographic keys in a storage device of a high-bandwidth digital content appliance in said transposed matrix rows and columns, wherein at least one of said rows does not include a complete cryptographic key and at least one of said columns does not include a complete cryptographic key.