: Used for professional product development and production.

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// Simple SHA-256 placeholder function // NOTE: In production, use OpenSSL's SHA256() void simple_hash(const char* input, size_t len, uint8_t* output) // This is a MOCK hash. Replace with: // SHA256_CTX sha256; // SHA256_Init(&sha256); // SHA256_Update(&sha256, input, len); // SHA256_Final(output, &sha256);