1 files changed, 23 insertions, 0 deletions
diff --git a/src/hash_method.hh b/src/hash_method.hh
new file mode 100644
index 0000000..5a61c23
--- /dev/null
+++ b/src/hash_method.hh
@@ -0,0 +1,23 @@
+#ifndef HASH_METHOD_HH
+#define HASH_METHOD_HH
+
+#include <memory>
+#include <string>
+
+class HashMethod {
+public:
+  virtual ~HashMethod() = default;
+
+  static std::unique_ptr<HashMethod> sha256();
+
+  virtual void update(void const* data, size_t count) = 0;
+
+  virtual std::string finish() = 0;
+
+protected:
+  HashMethod() = default;
+
+  std::string to_string(uint8_t const* data, size_t len);
+};
+
+#endif  // HASH_METHOD_HH