Generating multiple secure hashes from a single data buffer

A computing device, comprising:

• a processor comprising at least one single instruction multiple data (SIMD) register, each SIMD register configured to hold a plurality of data elements;
• memory comprising a data buffer, the data buffer configured to store a message of length L;
• an SIMD hash module configured to apportion at least a first portion of the message to a number (S) of segments, the message comprising a plurality of sequences of data elements, each sequence comprising S data elements, a respective data element in each sequence apportioned to a respective segment, each segment comprising a number N of blocks of data elements and to hash the S segments in parallel using the at least one SIMD register, resulting in S segment digests, the S segment digests based, at least in part, on an initial value;
• the SIMD hash module is further configured to store the S segment digests in memory;
• a padding module configured to pad a remainder, the remainder corresponding to a second portion of the message, the second portion related to the length L of the message, the number of segments and a block size;
• and
• a non-SIMD hash module configured to hash the padded remainder, resulting in an additional hash digest and to store the additional hash digest in memory.

A method, comprising:

• apportioning, by a single instruction multiple data (SIMD) hash module, at least a first portion of a message of length L to a number (S) of segments, the message comprising a plurality of sequences of data elements, each sequence comprising S data elements, a respective data element in each sequence apportioned to a respective segment, each segment comprising a number N of blocks of data elements;
• hashing, by the SIMD hash module, the S segments in parallel, resulting in S segment digests, the S segment digests based, at least in part, on an initial value;
• storing, by the SIMD hash module, the S segment digests;
• padding, by a padding module, a remainder, the remainder corresponding to a second portion of the message, the second portion related to the length L of the message, the number of segments and a block size;
• hashing, by a non-SIMD hash module, the padded remainder, resulting in an additional hash digest;
• and
• storing, by the non-SIMD hash module, the additional hash digest.

A system comprising, one or more storage devices having stored thereon, individually or in combination, instructions that when executed by one or more processors result in the following operations comprising:

• apportioning, using a single instruction multiple data (SIMD) hash module, at least a first portion of a message of length L to a number (S) of segments, the message comprising a plurality of sequences of data elements, each sequence comprising S data elements, a respective data element in each sequence apportioned to a respective segment, each segment comprising a number N of blocks of data elements;
• hashing, using the SIMD hash module, the S segments in parallel, resulting in S segment digests, the S segment digests based, at least in part, on an initial value;
• storing, using the SIMD hash module, the S segment digests;
• padding a remainder, the remainder corresponding to a second portion of the message, the second portion related to the length L of the message, the number of segments and a block size;
• hashing, using a non-SIMD hash module, the padded remainder, resulting in an additional hash digest;
• and
• storing, using the non-SIMD hash module, the additional hash digest.