1 files changed, 34 insertions, 0 deletions
diff --git a/src/hash_method_openssl.cc b/src/hash_method_openssl.cc
new file mode 100644
index 0000000..08884cb
--- /dev/null
+++ b/src/hash_method_openssl.cc
@@ -0,0 +1,34 @@
+#include "common.hh"
+
+#include "hash_method.hh"
+
+#include <openssl/sha.h>
+
+namespace {
+
+class Sha256HashMethod : public HashMethod {
+public:
+  Sha256HashMethod() {
+    SHA256_Init(&ctx_);
+  }
+
+  void update(void const* data, size_t count) override {
+    SHA256_Update(&ctx_, data, count);
+  }
+
+  std::string finish() override {
+    uint8_t out[SHA256_DIGEST_LENGTH];
+    SHA256_Final(out, &ctx_);
+    SHA256_Init(&ctx_);
+    return to_string(out, sizeof(out));
+  }
+
+private:
+  SHA256_CTX ctx_;
+};
+
+}  // namespace
+
+std::unique_ptr<HashMethod> HashMethod::sha256() {
+  return std::make_unique<Sha256HashMethod>();
+}