1 files changed, 66 insertions, 0 deletions
diff --git a/src/or/torcert.h b/src/or/torcert.h
new file mode 100644
index 0000000000..7e9c3f5b2d
--- /dev/null
+++ b/src/or/torcert.h
@@ -0,0 +1,66 @@
+/* Copyright (c) 2014, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef TORCERT_H_INCLUDED
+#define TORCERT_H_INCLUDED
+
+#include "crypto_ed25519.h"
+
+#define SIGNED_KEY_TYPE_ED25519 0x01
+
+#define CERT_TYPE_ID_SIGNING    0x04
+#define CERT_TYPE_SIGNING_LINK  0x05
+#define CERT_TYPE_SIGNING_AUTH  0x06
+
+#define CERT_FLAG_INCLUDE_SIGNING_KEY 0x1
+
+/** An ed25519-signed certificate as used throughout the Tor protocol.
+ **/
+typedef struct tor_cert_st {
+  /** The key authenticated by this certificate */
+  ed25519_public_key_t signed_key;
+  /** The key that signed this certificate. This value may be unset if the
+   * certificate has never been checked, and didn't include its own key. */
+  ed25519_public_key_t signing_key;
+  /** A time after which this certificate will no longer be valid. */
+  time_t valid_until;
+
+  /** The encoded representation of this certificate */
+  uint8_t *encoded;
+  /** The length of <b>encoded</b> */
+  size_t encoded_len;
+
+  /** One of CERT_TYPE_... */
+  uint8_t cert_type;
+  /** True iff we received a signing key embedded in this certificate */
+  unsigned signing_key_included : 1;
+  /** True iff we checked the signature and found it bad */
+  unsigned sig_bad : 1;
+  /** True iff we checked the signature and found it correct */
+  unsigned sig_ok : 1;
+  /** True iff we checked the signature and first found that the cert
+   * had expired */
+  unsigned cert_expired : 1;
+  /** True iff we checked the signature and found the whole cert valid */
+  unsigned cert_valid : 1;
+} tor_cert_t;
+
+tor_cert_t *tor_cert_create(const ed25519_keypair_t *signing_key,
+                            uint8_t cert_type,
+                            const ed25519_public_key_t *signed_key,
+                            time_t now, time_t lifetime,
+                            uint32_t flags);
+
+tor_cert_t *tor_cert_parse(const uint8_t *cert, size_t certlen);
+
+void tor_cert_free(tor_cert_t *cert);
+
+int tor_cert_get_checkable_sig(ed25519_checkable_t *checkable_out,
+                                 const tor_cert_t *out,
+                                 const ed25519_public_key_t *pubkey);
+
+int tor_cert_checksig(tor_cert_t *cert,
+                      const ed25519_public_key_t *pubkey, time_t now);
+
+#endif
+