feat: P2BK

README.md

@@ -80,6 +80,7 @@ For a guide to settings up a development environment see [DEVELOPMENT.md](./DEVE
 | [22][22] | Blind Authentication  | :heavy_check_mark: |
 | [23][23] | Payment Method: BOLT11 | :heavy_check_mark: |
 | [25][25] | Payment Method: BOLT12 | :heavy_check_mark: |
+| [28][28] | Pay-to-Blinded-Key (P2BK) | :heavy_check_mark: |
 
 
 ## License
@@ -120,3 +121,4 @@ Please see the [development guide](DEVELOPMENT.md).
 [22]: https://github.com/cashubtc/nuts/blob/main/22.md
 [23]: https://github.com/cashubtc/nuts/blob/main/23.md
 [25]: https://github.com/cashubtc/nuts/blob/main/25.md
+[28]: https://github.com/cashubtc/nuts/blob/main/28.md

crates/cashu/src/dhke.rs

@@ -149,6 +149,7 @@ pub fn construct_proofs(
             c: unblinded_signature,
             witness: None,
             dleq,
+            p2pk_e: None,
         };
 
         proofs.push(proof);

crates/cashu/src/nuts/auth/nut22.rs

@@ -183,6 +183,7 @@ impl From<AuthProof> for Proof {
             c: value.c,
             witness: None,
             dleq: value.dleq,
+            p2pk_e: None,
         }
     }
 }

crates/cashu/src/nuts/mod.rs

@@ -25,6 +25,7 @@ pub mod nut19;
 pub mod nut20;
 pub mod nut23;
 pub mod nut25;
+pub mod nut28;
 
 #[cfg(feature = "auth")]
 mod auth;