keyfork-shard: better error handling

Cargo.lock

@@ -974,6 +974,7 @@ dependencies = [
  "keyfork-mnemonic-util",
  "keyfork-plumbing",
  "keyfork-shard",
+ "serde",
  "smex",
  "thiserror",
 ]
@@ -1956,18 +1957,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.190"
+version = "1.0.193"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91d3c334ca1ee894a2c6f6ad698fe8c435b76d504b13d436f0685d648d6d96f7"
+checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.190"
+version = "1.0.193"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67c5609f394e5c2bd7fc51efda478004ea80ef42fee983d5c67a65e34f32c0e3"
+checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
 dependencies = [
  "proc-macro2",
  "quote",

keyfork-shard/src/openpgp.rs

@@ -79,7 +79,7 @@ pub struct EncryptedMessage {
 }
 
 impl EncryptedMessage {
-    pub fn with_swap(pkesks: &mut Vec<PKESK>, seip: SEIP) -> Self {
+    pub fn new(pkesks: &mut Vec<PKESK>, seip: SEIP) -> Self {
         Self {
             pkesks: std::mem::take(pkesks),
             message: seip,
@@ -156,7 +156,7 @@ pub fn parse_messages(reader: impl Read + Send + Sync) -> Result<VecDeque<Encryp
         match packet {
             Packet::PKESK(p) => pkesks.push(p),
             Packet::SEIP(s) => {
-                encrypted_messages.push_back(EncryptedMessage::with_swap(&mut pkesks, s));
+                encrypted_messages.push_back(EncryptedMessage::new(&mut pkesks, s));
             }
             s => {
                 panic!("Invalid variant found: {}", s.tag());

keyfork-shard/src/openpgp/smartcard.rs

@@ -18,6 +18,9 @@ use openpgp_card_sequoia::{state::Open, types::Error as SequoiaCardError, Card};
 
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
+    #[error("Smart card could not decrypt any matching PKESK packets")]
+    SmartCardCouldNotDecrypt,
+
     #[error("No smart card backend was stored")]
     SmartCardNotFound,
 
@@ -264,6 +267,6 @@ impl DecryptionHelper for &mut SmartcardManager {
             }
         }
 
-        Err(Error::SmartCardNotFound.into())
+        Err(Error::SmartCardCouldNotDecrypt.into())
     }
 }