pset: input: handle blinded_issuance

Author: LeoComandini

src/pset/error.rs

@@ -250,6 +250,8 @@ pub enum PsetBlindError {
     ConfidentialTxOutError(usize, ConfidentialTxOutError),
     /// Blinding proof creation error
     BlindingProofsCreationError(usize, secp256k1_zkp::Error),
+    /// Blinding issuance unsupported
+    BlindingIssuanceUnsupported(usize),
 }
 
 impl fmt::Display for PsetBlindError {
@@ -291,6 +293,9 @@ impl fmt::Display for PsetBlindError {
                     e, i
                 )
             }
+            PsetBlindError::BlindingIssuanceUnsupported(i) => {
+                write!(f, "Blinding issuance is not supported, set blinded_issuance to 0 at input index {}", i)
+            }
         }
     }
 }

src/pset/mod.rs

@@ -373,6 +373,11 @@ impl PartiallySignedTransaction {
         ),
         PsetBlindError,
     > {
+        for (i, inp) in self.inputs.iter().enumerate() {
+            if inp.has_issuance() && inp.blinded_issuance.unwrap_or(1) == 1 {
+                return Err(PsetBlindError::BlindingIssuanceUnsupported(i));
+            }
+        }
         let mut blind_out_indices = Vec::new();
         for (i, out) in self.outputs.iter().enumerate() {
             if out.blinding_key.is_none() {