Encryption based on SHA-256/Blake3

▤ Summary

This article explains a custom encryption scheme that combines SHA-256 and BLAKE3 to derive keys, generate masks, and verify integrity. It walks through both encryption and decryption flows, including byte-level salt generation and key evolution after each byte. The code examples show how to build and reverse the ciphertext while checking that the decrypted output still matches the original BLAKE3 hash. The piece is centered on software implementation details and cryptographic technique rather than a company event or product release.

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