public address from script_sig

zcash_primitives/src/legacy.rs

@@ -63,6 +63,17 @@ impl Script {
             None
         }
     }
+
+    pub fn public_key(&self) -> Option<[u8; 33]> {
+        // TODO: How to more reliably parse this? The len could be anything, really.
+        if self.0.len() == 107 || self.0.len() == 106 {
+            let mut pk = [0u8; 33];
+            pk.copy_from_slice(&self.0[self.0.len() - 33..self.0.len()]);
+            Some(pk)
+        } else {
+            None
+        }
+    }
 }
 
 impl Shl<OpCode> for Script {