Add schnorrsig module

Author: Tibo-lg

src/constants.rs

@@ -34,6 +34,15 @@ pub const MAX_SIGNATURE_SIZE: usize = 72;
 /// The maximum size of a compact signature
 pub const COMPACT_SIGNATURE_SIZE: usize = 64;
 
+/// Size of a Schnorr signature
+pub const SCHNORRSIG_SIGNATURE_SIZE: usize = 64;
+
+/// Size of a Schnorr public key
+pub const SCHNORRSIG_PUBLIC_KEY_SIZE: usize = 32;
+
+/// Size of a key pair
+pub const KEY_PAIR_SIZE: usize = 96;
+
 /// The Prime for the secp256k1 field element.
 pub const FIELD_SIZE: [u8; 32] = [
     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,

src/lib.rs

@@ -142,6 +142,7 @@ mod context;
 pub mod constants;
 pub mod ecdh;
 pub mod key;
+pub mod schnorrsig;
 #[cfg(feature = "recovery")]
 pub mod recovery;
 

src/macros.rs

@@ -67,7 +67,7 @@ macro_rules! serde_impl(
 
                 if d.is_human_readable() {
                     let sl: &str = ::serde::Deserialize::deserialize(d)?;
-                    SecretKey::from_str(sl).map_err(D::Error::custom)
+                    $t::from_str(sl).map_err(D::Error::custom)
                 } else {
                     let sl: &[u8] = ::serde::Deserialize::deserialize(d)?;
                     if sl.len() != $len {