Model PINs as &[u8] in openpgp-card-sequoia

card-functionality/src/tests.rs

@@ -255,7 +255,7 @@ pub fn test_keygen(
         key_sig,
         Some(key_dec),
         Some(key_aut),
-        Some("123456".to_string()),
+        Some(b"123456"),
         &|| {},
     )?;
     let armored = String::from_utf8(cert.armored().to_vec()?)?;

openpgp-card-examples/src/bin/decrypt.rs

@@ -27,7 +27,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let mut open = Open::new(pgp.transaction()?)?;
 
-    let pin = std::fs::read_to_string(pin_file)?;
+    let pin = std::fs::read(pin_file)?;
 
     open.verify_user(&pin)?;
 

openpgp-card-examples/src/bin/detach-sign.rs

@@ -27,7 +27,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let mut open = Open::new(pgp.transaction()?)?;
 
-    let pin = std::fs::read_to_string(pin_file)?;
+    let pin = std::fs::read(pin_file)?;
 
     open.verify_user_for_signing(&pin)?;
 

openpgp-card-sequoia/src/card.rs

@@ -64,8 +64,8 @@ impl<'a> Open<'a> {
         self.opt.feature_pinpad_modify()
     }
 
-    pub fn verify_user(&mut self, pin: &str) -> Result<(), Error> {
-        let _ = self.opt.verify_pw1_user(pin.as_bytes())?;
+    pub fn verify_user(&mut self, pin: &[u8]) -> Result<(), Error> {
+        let _ = self.opt.verify_pw1_user(pin)?;
         self.pw1 = true;
         Ok(())
     }
@@ -78,8 +78,8 @@ impl<'a> Open<'a> {
         Ok(())
     }
 
-    pub fn verify_user_for_signing(&mut self, pin: &str) -> Result<(), Error> {
-        let _ = self.opt.verify_pw1_sign(pin.as_bytes())?;
+    pub fn verify_user_for_signing(&mut self, pin: &[u8]) -> Result<(), Error> {
+        let _ = self.opt.verify_pw1_sign(pin)?;
 
         // FIXME: depending on card mode, pw1_sign is only usable once
 
@@ -98,8 +98,8 @@ impl<'a> Open<'a> {
         Ok(())
     }
 
-    pub fn verify_admin(&mut self, pin: &str) -> Result<(), Error> {
-        let _ = self.opt.verify_pw3(pin.as_bytes())?;
+    pub fn verify_admin(&mut self, pin: &[u8]) -> Result<(), Error> {
+        let _ = self.opt.verify_pw3(pin)?;
         self.pw3 = true;
         Ok(())
     }
@@ -126,8 +126,8 @@ impl<'a> Open<'a> {
         self.opt.check_pw3()
     }
 
-    pub fn change_user_pin(&mut self, old: &str, new: &str) -> Result<(), Error> {
-        self.opt.change_pw1(old.as_bytes(), new.as_bytes())
+    pub fn change_user_pin(&mut self, old: &[u8], new: &[u8]) -> Result<(), Error> {
+        self.opt.change_pw1(old, new)
     }
 
     pub fn change_user_pin_pinpad(&mut self, prompt: &dyn Fn()) -> Result<(), Error> {
@@ -135,13 +135,12 @@ impl<'a> Open<'a> {
         self.opt.change_pw1_pinpad()
     }
 
-    pub fn reset_user_pin(&mut self, rst: &str, new: &str) -> Result<(), Error> {
-        self.opt
-            .reset_retry_counter_pw1(new.as_bytes(), Some(rst.as_bytes()))
+    pub fn reset_user_pin(&mut self, rst: &[u8], new: &[u8]) -> Result<(), Error> {
+        self.opt.reset_retry_counter_pw1(new, Some(rst))
     }
 
-    pub fn change_admin_pin(&mut self, old: &str, new: &str) -> Result<(), Error> {
-        self.opt.change_pw3(old.as_bytes(), new.as_bytes())
+    pub fn change_admin_pin(&mut self, old: &[u8], new: &[u8]) -> Result<(), Error> {
+        self.opt.change_pw3(old, new)
     }
 
     pub fn change_admin_pin_pinpad(&mut self, prompt: &dyn Fn()) -> Result<(), Error> {

openpgp-card-sequoia/src/lib.rs

@@ -64,7 +64,7 @@
 //! let mut open = Open::new(pgp.transaction()?)?;
 //!
 //! // Get authorization for user access to the card with password
-//! open.verify_user("123456")?;
+//! open.verify_user(b"123456")?;
 //! let mut user = open.user_card().expect("This should not fail");
 //!
 //! // Get decryptor (`cert` must contain a public key that corresponds
@@ -107,7 +107,7 @@
 //! let mut open = Open::new(pgp.transaction()?)?;
 //!
 //! // Get authorization for signing access to the card with password
-//! open.verify_user_for_signing("123456")?;
+//! open.verify_user_for_signing(b"123456")?;
 //! let mut user = open.signing_card().expect("This should not fail");
 //!
 //! // Get signer (`cert` must contain a public key that corresponds
@@ -139,7 +139,7 @@
 //! let mut open = Open::new(pgp.transaction()?)?;
 //!
 //! // Get authorization for admin access to the card with password
-//! open.verify_admin("12345678")?;
+//! open.verify_admin(b"12345678")?;
 //! let mut admin = open.admin_card().expect("This should not fail");
 //!
 //! // Set the Name and URL fields on the card

openpgp-card-sequoia/src/main.rs

@@ -94,7 +94,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         println!("factory reset\n");
         open.factory_reset()?;
 
-        open.verify_admin("12345678")?;
+        open.verify_admin(b"12345678")?;
         println!("verify for admin ok");
 
         let check = open.check_user_verified();
@@ -152,7 +152,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         let check = open.check_user_verified();
         println!("has user (pw1/82) been verified yet?\n{:x?}\n", check);
 
-        open.verify_user("123456")?;
+        open.verify_user(b"123456")?;
         println!("verify for user (pw1/82) ok");
 
         let check = open.check_user_verified();
@@ -186,7 +186,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         let mut open = Open::new(pgp.transaction()?)?;
 
         // Sign
-        open.verify_user_for_signing("123456")?;
+        open.verify_user_for_signing(b"123456")?;
         println!("verify for sign (pw1/81) ok\n");
 
         // Use Sign access to card

openpgp-card-sequoia/src/util.rs

@@ -47,7 +47,7 @@ pub fn make_cert<'app>(
     key_sig: PublicKey,
     key_dec: Option<PublicKey>,
     key_aut: Option<PublicKey>,
-    pw1: Option<String>,
+    pw1: Option<&[u8]>,
     prompt: &dyn Fn(),
 ) -> Result<Cert> {
     let mut pp = vec![];
@@ -76,8 +76,8 @@ pub fn make_cert<'app>(
                 )?;
 
             // Allow signing on the card
-            if let Some(pw1) = pw1.clone() {
-                open.verify_user_for_signing(&pw1)?;
+            if let Some(pw1) = pw1 {
+                open.verify_user_for_signing(pw1)?;
             } else {
                 open.verify_user_for_signing_pinpad(prompt)?;
             }
@@ -107,8 +107,8 @@ pub fn make_cert<'app>(
                 .set_key_flags(KeyFlags::empty().set_authentication())?;
 
             // Allow signing on the card
-            if let Some(pw1) = pw1.clone() {
-                open.verify_user_for_signing(&pw1)?;
+            if let Some(pw1) = pw1 {
+                open.verify_user_for_signing(pw1)?;
             } else {
                 open.verify_user_for_signing_pinpad(prompt)?;
             }
@@ -151,7 +151,7 @@ pub fn make_cert<'app>(
 
         // Allow signing on the card
         if let Some(pw1) = pw1 {
-            open.verify_user_for_signing(&pw1)?;
+            open.verify_user_for_signing(pw1)?;
         } else {
             open.verify_user_for_signing_pinpad(prompt)?;
         }

tools/src/bin/opgpcard-pin/main.rs

@@ -31,7 +31,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 let pin = rpassword::read_password_from_tty(Some("Enter user PIN: "))?;
 
                 // verify pin
-                open.verify_user(&pin)?;
+                open.verify_user(pin.as_bytes())?;
                 println!("PIN was accepted by the card.\n");
 
                 // get new user pin
@@ -43,7 +43,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 }
 
                 // set new user pin
-                open.change_user_pin(&pin, &newpin1)
+                open.change_user_pin(pin.as_bytes(), newpin1.as_bytes())
             } else {
                 // set new user pin via pinpad
                 open.change_user_pin_pinpad(&|| {
@@ -69,7 +69,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 let pin = rpassword::read_password_from_tty(Some("Enter admin PIN: "))?;
 
                 // verify pin
-                open.verify_admin(&pin)?;
+                open.verify_admin(pin.as_bytes())?;
 
                 // get new admin pin
                 let newpin1 = rpassword::read_password_from_tty(Some("Enter new admin PIN: "))?;
@@ -81,7 +81,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 }
 
                 // set new admin pin from input
-                open.change_admin_pin(&pin, &newpin1)?;
+                open.change_admin_pin(pin.as_bytes(), newpin1.as_bytes())?;
             } else {
                 // set new admin pin with pinpad
                 open.change_admin_pin_pinpad(&|| {
@@ -100,7 +100,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 // get current admin pin
                 let pin = rpassword::read_password_from_tty(Some("Enter admin PIN: "))?;
 
-                open.verify_admin(&pin)?;
+                open.verify_admin(pin.as_bytes())?;
             } else {
                 open.verify_admin_pinpad(&|| println!("Enter admin PIN on card reader pinpad."))?;
             }
@@ -132,7 +132,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                     let pin = rpassword::read_password_from_tty(Some("Enter admin PIN: "))?;
 
                     // verify pin
-                    open.verify_admin(&pin)?;
+                    open.verify_admin(pin.as_bytes())?;
                 } else {
                     open.verify_admin_pinpad(&|| {
                         println!("Enter admin PIN on card reader pinpad.")
@@ -160,7 +160,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
             let res = if let Some(rst) = rst {
                 // reset to new user pin
-                open.reset_user_pin(&rst, &newpin1)
+                open.reset_user_pin(rst.as_bytes(), newpin1.as_bytes())
             } else if let Some(mut admin) = open.admin_card() {
                 admin.reset_user_pin(&newpin1)
             } else {

tools/src/bin/opgpcard/main.rs

@@ -554,9 +554,14 @@ fn generate_keys(
         None
     };
 
-    let cert = make_cert(&mut open, key_sig, key_dec, key_aut, pin, &|| {
-        println!("Enter user PIN on card reader pinpad.")
-    })?;
+    let cert = make_cert(
+        &mut open,
+        key_sig,
+        key_dec,
+        key_aut,
+        pin.as_deref(),
+        &|| println!("Enter user PIN on card reader pinpad."),
+    )?;
     let armored = String::from_utf8(cert.armored().to_vec()?)?;
 
     // Write armored certificate to the output file (or stdout)

tools/src/bin/opgpcard/util.rs

@@ -71,9 +71,9 @@ pub(crate) fn verify_to_admin<'app, 'open>(
         .ok_or_else(|| anyhow!("Couldn't get admin access").into())
 }
 
-pub(crate) fn load_pin(pin_file: &Path) -> Result<String> {
+pub(crate) fn load_pin(pin_file: &Path) -> Result<Vec<u8>> {
     let pin = std::fs::read_to_string(pin_file)?;
-    Ok(pin.trim().to_string())
+    Ok(pin.trim().as_bytes().to_vec())
 }
 
 pub(crate) fn open_or_stdin(f: Option<&Path>) -> Result<Box<dyn std::io::Read + Send + Sync>> {