Cryptographic ASIC with combined transformation and one-way functions
A transform-enabled integrated circuit is provided with a combined transformation/hashing block, such as for cryptographic proof-of-work systems. The transform-enabled integrated circuit embeds components for a transformation function among hashing function components within the cryptographic datapath of the transform-enabled integrated circuit. The combined transformation/hashing block may be configured after the manufacture of the integrated circuit to embody as circuitry any one of a plurality of mathematical transformation functions, thus enabling a user to systemically modify the cryptographic operations performed by the integrated circuit while retaining the high performance and efficiency characteristics of application specific integrated circuits. Embodiments modify the internal intermediate state variables of the hashing function to transform and hash an input message. Method and computer program product embodiments are also provided. The technology flexibly enables the deployment of application-specific integrated circuits (ASICs) within blockchain systems, digital rights management, secure token, and other cryptography-related fields.
1. A cryptographic system, comprising:
means for receiving a configuration key from a user;
means for programming a transformation function, based on the configuration key;
means for performing a hashing operation on input data including altering internal state variable values of the hashing operation based on the programmed transformation function; and
means for outputting the result of the transform-enabled hashing operation.
2. The cryptographic system of claim 1 , wherein the altering comprises at least one of a bit inversion and a bit transposition.
3. The cryptographic system of claim 1 , wherein the hashing operation comprises one of SHA-2, Keccak/SHA-3, Skein, Grostl, and JH.
4. The cryptographic system of claim 1 , wherein the means for performing the hashing operation comprises datapath circuitry capable of operating at the same speed as other datapath circuitry.
5. The cryptographic system of claim 1 , wherein the system's operations implement a cryptographic proof-of-work system comprising a blockchain system.
6. The cryptographic system of claim 1 , further comprising means for executing the system's operations a plurality of times in a sequence.
7. The cryptographic system of claim 1 , wherein the configuration key is embodied as circuitry into at least one independent cryptographic circuit of the cryptographic system.
8. The cryptographic system of claim 1 , further comprising means for executing the system's operations in parallel for a number of input data sets.
9. The cryptographic system of claim 1 , further comprising means for using a separate configuration key for each execution of the system's operations.