begin work on server

1 files changed, 49 insertions, 3 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 7f339c1..4a6d2fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,51 @@
+//!
+//! An implementation of the [Roughtime](https://roughtime.googlesource.com/roughtime) 
+//! secure time synchronization protocol.
+//!
+
 extern crate byteorder;
 
-pub mod error;
-pub mod tag;
-pub mod message;
+mod error;
+mod tag;
+mod message;
+
+pub mod hex;
+
+pub use error::Error;
+pub use tag::Tag;
+pub use message::RtMessage;
+
+//  Constants and magic numbers of the Roughtime protocol
+//  
+    /// Minimum size (in bytes) of a client request
+    pub const MIN_REQUEST_LENGTH: u32 = 1024;
+
+    /// Minimum size (in bytes) of seeds used to derive private keys
+    pub const MIN_SEED_LENGTH: u32 = 32;
+
+    /// Size (in bytes) of an Ed25519 public key
+    pub const PUBKEY_LENGTH: u32 = 32;
+
+    /// Size (in bytes) of the client's nonce
+    pub const NONCE_LENGTH: u32 = 64;
+
+    /// Size (in bytes) of an Ed25519 signature
+    pub const SIGNATURE_LENGTH: u32 = 64;
+
+    /// Size (in bytes) of server's timestamp value
+    pub const TIMESTAMP_LENGTH: u32 = 8;
+
+    /// Size (in bytes) of server's time uncertainty value
+    pub const RADIUS_LENGTH: u32 = 4;
+
+    /// Prefixed to the server's certificate before generating or verifying certificate's signature
+    pub const CERTIFICATE_CONTEXT: &str = "RoughTime v1 delegation signature--\x00";
+
+    /// Prefixed to the server's response before generating or verifying the server's signature
+    pub const SIGNED_RESPONSE_CONTEXT: &str = "RoughTime v1 response signature\x00";
+
+    /// Value prepended to leaves prior to hashing
+    pub const TREE_LEAF_TWEAK: u8 = 0x00;
+
+    /// Value prepended to nodes prior to hashing
+    pub const TREE_NODE_TWEAK: u8 = 0x01;