NAM Performance profiling (sync)

src/AesDigest.cpp

@@ -0,0 +1,40 @@
+#include "AesDigest.hpp"
+
+#include <array>
+#include <openssl/evp.h>
+#include <stdexcept>
+
+using namespace pipedal;
+
+
+std::string pipedal::AesDigest(const std::string &text)
+{
+    std::array<unsigned char, EVP_MAX_MD_SIZE> digest{};
+    size_t digestLength = 0;
+
+    if (EVP_Q_digest(
+            nullptr,
+            "SHA256",
+            nullptr,
+            reinterpret_cast<const unsigned char *>(text.data()),
+            text.size(),
+            digest.data(),
+            &digestLength)
+        != 1)
+    {
+        throw std::runtime_error("EVP_Q_digest(SHA256) failed.");
+    }
+
+    static constexpr char hexDigits[] = "0123456789abcdef";
+    std::string result(digestLength * 2, '\0');
+    for (size_t i = 0; i < digestLength; ++i)
+    {
+        unsigned char value = digest[i];
+        result[2 * i] = hexDigits[(value >> 4) & 0x0F];
+        result[2 * i + 1] = hexDigits[value & 0x0F];
+    }
+    return result;
+}
+
+
+