Developers presented a verified implementation of SHA-256 in the Bend language

Developers have released bend-sha256 — a formally verified implementation of the SHA-256 hashing algorithm written in the Bend language version 2.0.5. The project ensures full functional correctness of calculations in accordance with the FIPS 180-4 standard. The implementation covers all stages of data processing, including preliminary message preparation and final digest calculation. An important feature of the project is the absence of external cryptographic libraries, which allows the code to be used in isolated environments. The entire calculation process has been verified for compliance with the mathematical specification of the algorithm. During performance testing, the system showed a result of 7 points when performing the task in 11 hours. The project's source code is fully open and available for audit, allowing developers to integrate cryptographic functions directly into high-level Bend programs without needing to resort to low-level dependencies. The use of formal verification for cryptographic primitives reduces the risk of errors when implementing complex algorithms. This release demonstrates the capabilities of the Bend language in tasks that require high accuracy of calculations and mathematical provability of code, which is critical for ensuring data security in distributed systems.