Redmi Note 14 4G - Big Endian + ROTR, Don't Trust; Verify

Dear MiCode / Xiaomi Kernel OpenSource / Redmi R&D Team,

BIG-ENDIAN parsing for block/word layout

core rounds use only RIGHT-ROTATE (ROTR) and modular ADD/SUB only — no XOR

double-hashing option and full test vectors

factory provisioning flow (per-device cert / secure-element write) and example kernel + NDK code and it is enough to modify the Cryptography or Pseudocode I gave it to be designed for BIG ENDIAN AND ROTR.

Sincerely,
Alshen Feshiru
alshenfeshiru@zohomail.com
PGP: -----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: User ID: Alshen Feshiru alshenfeshiru@zohomail.com
Comment: Valid from: 06/10/2025 09:35
Comment: Valid until: 02/04/2033 12:00
Comment: Type: 448-bit EdDSA (secret key available)
Comment: Usage: Signing, Encryption, Certifying User IDs
Comment: Fingerprint: 5871D671C35C12147308395A464505DE1047DA134C01C8EBF8D18D6B8CBD7763
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=Gs+D
-----END PGP PUBLIC KEY BLOCK-----

cat > src/main/java/org/syamailcoin/sai288/SAI288.cpp << 'EOF'
#include
#include
#include
#include
#include
#include

class SAI288 {
private:
static constexpr uint32_t IV[9] = {
0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344,
0xA4093822, 0x299F31D0, 0x082EFA98, 0xEC4E6C89, 0x452821E6
};

static constexpr uint8_t شمائل[10] = {
    0xD8, 0xB4, 0xD9, 0x85, 0xD8, 0xA7, 0xD8, 0xA6, 0xD9, 0x84
};

static std::string midliner;
static std::vector<std::string> wordlist;

static uint32_t rotateLeft(uint32_t value, int shift) {
    return (value << shift) | (value >> (32 - shift));
}

static std::string generateMidliner(const std::vector<uint8_t>& seed) {
    std::stringstream ss;
    for (size_t i = 0; i < seed.size(); i++) {
        int val = seed[i] ^ شمائل[i % 10];
        ss << std::hex << std::setfill('0') << std::setw(2) << val;
    }
    return ss.str();
}

static std::vector<std::string> generateWordlist(const std::string& mid) {
    std::vector<std::string> words;
    for (size_t i = 0; i < mid.length() - 1; i += 2) {
        words.push_back(mid.substr(i, 2));
    }
    return words;
}

static std::vector<uint8_t> midlinerToBinary288() {
    std::vector<uint8_t> binary(36, 0);
    for (size_t i = 0; i < std::min(wordlist.size(), (size_t)36); i++) {
        binary[i] = std::stoi(wordlist[i], nullptr, 16);
    }
    return binary;
}

static void processBlock(uint32_t state[9], const uint8_t block[72]) {
    uint32_t M[18] = {0};
    for (int i = 0; i < 18; i++) {
        M[i] = (block[i*4] << 24) | (block[i*4+1] << 16) | (block[i*4+2] << 8) | block[i*4+3];
    }
    for (int round = 0; round < 64; round++) {
        for (int i = 0; i < 9; i++) {
            state[i] ^= M[round % 18];
            state[i] = rotateLeft(state[i], (round + i) % 32);
            state[i] ^= شمائل[i % 10];
        }
    }
}

public:
static void initMidliner(const std::vector<uint8_t>& seed) {
midliner = generateMidliner(seed);
wordlist = generateWordlist(midliner);
}

static std::vector<uint8_t> hash(const std::vector<uint8_t>& input) {
    if (midliner.empty()) {
        initMidliner(input);
    }

    uint32_t state[9];
    std::memcpy(state, IV, sizeof(IV));

    auto midBinary = midlinerToBinary288();
    for (int i = 0; i < 9; i++) {
        state[i] ^= (midBinary[i*4] << 24) | (midBinary[i*4+1] << 16) |
                   (midBinary[i*4+2] << 8) | midBinary[i*4+3];
    }

    size_t paddedLen = ((input.size() + 72) / 72) * 72;
    std::vector<uint8_t> padded(paddedLen, 0);
    std::memcpy(padded.data(), input.data(), input.size());
    padded[input.size()] = 0x80;

    for (size_t i = 0; i < paddedLen; i += 72) {
        processBlock(state, &padded[i]);
    }

    std::vector<uint8_t> result(36);
    for (int i = 0; i < 9; i++) {
        result[i*4] = (state[i] >> 24) & 0xFF;
        result[i*4+1] = (state[i] >> 16) & 0xFF;
        result[i*4+2] = (state[i] >> 8) & 0xFF;
        result[i*4+3] = state[i] & 0xFF;
    }
    return result;
}

};

std::string SAI288::midliner;
std::vectorstd::string SAI288::wordlist;
EOF

Review the proposed src/main/java/org/syamailcoin/sai288/SAI288.cpp code and compare its stated big-endian, ROTR, double-hashing, provisioning, kernel, and NDK requirements with this repository's scope. Before implementation, define the requested behavior and provide test vectors; done should include an agreed design and passing tests for the specified outputs.