Process efficient preprocessing for any encryption standard
A pre-encryption process for symmetric encryption processes that inputs a bit stream into any existing or future encryption standard to increase encryption complexity with a disproportionate increase in processing time. The first encoding step is the two-stage generation of two strong keys based on a seed strong crypto key and known information from the Source Data bit stream. The second step is to split and encode the bit stream based on entropy levels. After entropy coding, the aligned bit streams are multiplexed in a cyclic fashion to generate one resulting bit stream. The third step is to slice the resulting bit stream into blocks, encrypting each block and adding each block to a coded output bit stream. Each new strong crypto key is derived from the previous crypto key and the previous pre-processed bit stream data. The decoding process is provided that is a simplified inverse of the encoding process.
1. A method of creating at least two band entropy coded bit streams from a Source Data bit stream, the method comprising:
separating the Source Data bit stream into at least a high bit stream and a low bit stream, each of the high bit stream and the low bit stream associated with an entropy band having a predetermined entropy designation indicating a level of entropy content, the predetermined entropy designation selected from an entropy designation range between a predetermined high entropy designation and a predetermined low entropy designation;
entropy coding each of the high bit stream and the low bit stream separately and in parallel using a standard entropy coder to create at least two band entropy coded bit streams;
generating a bit mask with a hash, the hash having inputs of at least a predetermined strong encryption key and selected data that is from the Source Data bit stream, the selected data not encrypted during any encryption process;
merging each of the at least two band entropy coded bit streams into a resultant band entropy coded bit stream based on a sequence of at least one indexed value obtained from the bit mask; and
at least one of storing or sharing the resultant band entropy coded bit stream in a same file format as the Source Data bit stream.
2. The method of claim 1 , wherein:
the sequence of the at least one indexed value proceeds in steps from a first index value of the bit mask to a last index value of the bit mask and repeats from the first index value, wherein the steps have a step size in a range from a minimum step size of one bit and a maximum step size of a width of the at least one indexed value in bits, and
the at least one indexed value obtained from the bit mask is associated with at least one of the at least two band entropy coded bit streams to be merged.
3. The method of claim 2 wherein the at least one indexed value has a predetermined bit width and is determined based on a maximum number of the at least two band entropy coded bit streams created, the at least one indexed value including at least one of: a bit, a nibble, or a byte.
4. The method of claim 3 , wherein a current mask position indexed value is used to select a unit of multiplexing data from the at least two band entropy coded bit streams, the unit of multiplexing data having a bit size obtained from the bit mask, the bit size being one of: a bit, a nibble, a byte, a word, or a longword.
5. The method of claim 4 , further comprising:
adding an end of band flag to the resultant band entropy coded bit stream when one of the at least two band entropy coded bit streams has no further bits; and
merging a remaining one of the at least two band entropy coded bit streams until no further bits are left in the remaining one of the at least two band entropy coded bit streams.
6. A method of encoding sequential blocks, each of the sequential blocks being associated with a unique encryption key, the method comprising:
slicing a resultant band entropy coded bit stream into a plurality of sequential blocks having a predetermined block size;
generating a first unique strong encryption key for a first block of the plurality of sequential blocks from a hash of a previous unique encryption key associated with a previous block of the plurality of sequential blocks and data of the previous block of the plurality of sequential blocks;
encrypting, with a standard encryption coder, the first block of the plurality of sequential blocks by the first unique strong encryption key associated with the first block of the plurality of sequential blocks;
generating a second unique strong encryption key for a second subsequent block of the plurality of sequential blocks from a hash of the first unique strong encryption key associated with the first block and data of the first block;
encrypting, with a standard encryption coder, the second subsequent block by the second unique strong encryption key associated with the second subsequent block;
merging the encrypted sequential blocks into the resultant bit stream based on a sequence of at least one indexed value obtained from a bit mask generated with a hash, the hash having inputs of at least a predetermined strong encryption key and selected data that is from a Source Data bit stream, the selected data not encrypted during any encryption process; and
at least one of storing or sharing the resultant bit stream in a same file format as the Source Data bit stream.
7. The method of claim 6 , further comprising adding an end of block flag to an end of each of the plurality of sequential blocks.
8. A method of decoding a resultant bit stream, the method comprising:
slicing the resultant bit stream into a plurality of sequential blocks having predetermined block sizes;
decrypting, with a standard decryption decoder, a first block of the plurality of sequential blocks using a first generated unique strong decryption key from a hash of a known strong decryption key and bit stream data, the first unique strong decryption key associated with the first block of the plurality of sequential blocks to generate a first segment of a band entropy coded bit stream;
generating a second unique strong decryption key for a second subsequent block of the plurality of sequential blocks from a hash of the first generated unique strong decryption key associated with the first block of the plurality of sequential blocks and data of the first block of the plurality of sequential blocks;
decrypting, with a standard decryption decoder, the second subsequent block of the plurality of sequential blocks using the second unique strong decryption key associated with the second subsequent block of the plurality of sequential blocks to generate a second segment of the band entropy coded bit stream;
merging at least the first segment of the band entropy coded bit stream and the second segment of the band entropy coded bit stream to generate a Source Data bit stream using a bit mask for de-multiplexing, the bit mask based on the hash of a known strong decryption key and the bit stream data; and
at least one of storing or sharing the Source Data bit stream in a same file format as the resultant bit stream.
9. The method of claim 8 , wherein the predetermined block size is fixed.
10. The method of claim 8 , wherein the predetermined block size is variable.
11. A method of decoding at least two band entropy coded bit streams into a Source Data bit stream, the method comprising:
generating a bit mask with a hash, the hash having inputs of at least a predetermined strong decryption key and selected data that is from a bit stream and that is not encrypted during any encryption process;
entropy decoding each of at least two band entropy coded bit streams separately and in parallel using a standard entropy decoder to generate at least two band entropy decoded bit streams, each of the at least two band entropy coded bit streams decoded with an entropy band decoder having a predetermined entropy designation indicating a level of entropy content, the predetermined entropy designation selected from an entropy designation range between a predetermined high entropy designation and a predetermined low entropy designation;
merging each of the at least two band entropy decoded bit streams together to generate the Source Data bit stream based on a sequence of at least one indexed value obtained from the bit mask; and
at least one of storing or sharing the Source Data bit stream in a same file format as the at least two band entropy coded bit streams.