如何使用蒙特卡洛测试向量测试由 crytopp 生成的 sha256 类型哈希？

Question

当我使用这些代码手动检查多达 3-4 次迭代时，获得了正确的结果。但是当我使用蒙特卡洛测试向量时，结果是错误的。

#include "HASH.hpp"

string HexEncode(const string &data)
{
    string result;
    StringSource(data, true, new HexEncoder(new StringSink(result)));
    return result;
}

string HexDecode(const string &data)
{
    string result;
    StringSource(data, true, new HexDecoder(new StringSink(result)));
    return result;
}

template <class T>
string hashBase(string input, int iteration)
{
    T hash;
    string result;

    for (size_t i = 0; i < iteration; i++)
    {
        hash.Update((const unsigned char *)input.data(), input.size());
        result.resize(hash.DigestSize());
        hash.Final((unsigned char *)&result[0]);
        input = result;
    }

    return HexEncode(result);
}

string sha2_256(string input, int iteration)
{
    return hashBase<SHA256>(input, iteration);
}

对于这个测试，结果应该是

45f72e1ab055e54f5c26aebe73bb7f4ec8f795c9d4f94e3f258ed130ab3d3347

。但是结果是

7FEE6FC25FBBD67A3D513A0749A6CD45A689F0934BB21A30F59CCBA3F98799D2

.

int main(int argc, char *argv[])
{
    int iteration = 99;
    string input = "6cd4c0c5cb2ca2a0f1d1aecebac03b52e64ea03d1a1654372936545b92bbc5484a59db74bb60f9c40ceb1a5aa35a6fafe80349e14c253a4e8b1d77612ddd81ace926ae8b0af6e53176dbffcc2a6b88c6bd765f939d3d178a9bde9ef3aa131c61e31c1e42cdfaf4b4dcde579a37e150efbef5555b4c1cb40439d835a724e2fae7";
    string result = sha2_256(input, iteration);

    cout << "Iteration: " << iteration << endl;
    cout << "Input: " << input << endl;
    cout << "Result: " << result << endl;

    return 0;
}