1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/nix/src/libstore/crypto.hh b/third_party/nix/src/libstore/crypto.hh
new file mode 100644
index 000000000000..ef578db6d055
--- /dev/null
+++ b/third_party/nix/src/libstore/crypto.hh
@@ -0,0 +1,49 @@
+#pragma once
+
+#include <map>
+
+#include "types.hh"
+
+namespace nix {
+
+struct Key {
+  std::string name;
+  std::string key;
+
+  /* Construct Key from a string in the format
+     ‘<name>:<key-in-base64>’. */
+  Key(const std::string& s);
+
+ protected:
+  Key(const std::string& name, const std::string& key) : name(name), key(key) {}
+};
+
+struct PublicKey;
+
+struct SecretKey : Key {
+  SecretKey(const std::string& s);
+
+  /* Return a detached signature of the given string. */
+  std::string signDetached(const std::string& data) const;
+
+  PublicKey toPublicKey() const;
+};
+
+struct PublicKey : Key {
+  PublicKey(const std::string& s);
+
+ private:
+  PublicKey(const std::string& name, const std::string& key) : Key(name, key) {}
+  friend struct SecretKey;
+};
+
+typedef std::map<std::string, PublicKey> PublicKeys;
+
+/* Return true iff ‘sig’ is a correct signature over ‘data’ using one
+   of the given public keys. */
+bool verifyDetached(const std::string& data, const std::string& sig,
+                    const PublicKeys& publicKeys);
+
+PublicKeys getDefaultPublicKeys();
+
+}  // namespace nix