Use KeyGenerationTime in openpgp-card APIs (instead of u32 or SystemTime)

card-functionality/src/tests.rs

@@ -2,18 +2,16 @@
 // SPDX-License-Identifier: MIT OR Apache-2.0
 
 use anyhow::{Error, Result};
-use std::convert::TryInto;
 use std::str::FromStr;
 use std::string::FromUtf8Error;
 use thiserror::Error;
 
 use sequoia_openpgp::parse::Parse;
 use sequoia_openpgp::serialize::SerializeInto;
-use sequoia_openpgp::types::Timestamp;
 use sequoia_openpgp::Cert;
 
 use openpgp_card::algorithm::AlgoSimple;
-use openpgp_card::card_do::Sex;
+use openpgp_card::card_do::{KeyGenerationTime, Sex};
 use openpgp_card::errors::{OcErrorStatus, OpenpgpCardError};
 use openpgp_card::{CardApp, KeyType};
 use openpgp_card_sequoia::{
@@ -96,7 +94,7 @@ pub fn test_sign(
 
 fn check_key_upload_metadata(
     ca: &mut CardApp,
-    meta: &[(String, u32)],
+    meta: &[(String, KeyGenerationTime)],
 ) -> Result<()> {
     let ard = ca.get_app_data()?;
 
@@ -117,21 +115,16 @@ fn check_key_upload_metadata(
     // get_key_generation_times
     let card_kg = ard.get_key_generation_times()?;
 
-    let sig: u32 =
-        card_kg.signature().expect("signature creation time").into();
-    assert_eq!(sig, meta[0].1);
+    let sig = card_kg.signature().expect("signature creation time");
+    assert_eq!(sig, &meta[0].1);
 
-    let dec: u32 = card_kg
-        .decryption()
-        .expect("decryption creation time")
-        .into();
-    assert_eq!(dec, meta[1].1);
+    let dec = card_kg.decryption().expect("decryption creation time");
+    assert_eq!(dec, &meta[1].1);
 
-    let auth: u32 = card_kg
+    let auth = card_kg
         .authentication()
-        .expect("authentication creation time")
-        .into();
-    assert_eq!(auth, meta[2].1);
+        .expect("authentication creation time");
+    assert_eq!(auth, &meta[2].1);
 
     Ok(())
 }
@@ -220,11 +213,7 @@ pub fn test_keygen(
     println!(" Generate subkey for Signing");
     let (pkm, ts) =
         ca.generate_key_simple(public_to_fingerprint, KeyType::Signing, alg)?;
-    let key_sig = public_key_material_to_key(
-        &pkm,
-        KeyType::Signing,
-        Timestamp::from(ts).into(),
-    )?;
+    let key_sig = public_key_material_to_key(&pkm, KeyType::Signing, ts)?;
 
     println!(" Generate subkey for Decryption");
     let (pkm, ts) = ca.generate_key_simple(
@@ -232,11 +221,7 @@ pub fn test_keygen(
         KeyType::Decryption,
         alg,
     )?;
-    let key_dec = public_key_material_to_key(
-        &pkm,
-        KeyType::Decryption,
-        Timestamp::from(ts).into(),
-    )?;
+    let key_dec = public_key_material_to_key(&pkm, KeyType::Decryption, ts)?;
 
     println!(" Generate subkey for Authentication");
     let (pkm, ts) = ca.generate_key_simple(
@@ -244,11 +229,8 @@ pub fn test_keygen(
         KeyType::Authentication,
         alg,
     )?;
-    let key_aut = public_key_material_to_key(
-        &pkm,
-        KeyType::Authentication,
-        Timestamp::from(ts).into(),
-    )?;
+    let key_aut =
+        public_key_material_to_key(&pkm, KeyType::Authentication, ts)?;
 
     // Generate a Cert for this set of generated keys
 
@@ -271,7 +253,7 @@ pub fn test_get_pub(
     // --
 
     let sig = ca.get_pub_key(KeyType::Signing)?;
-    let ts = Timestamp::from(key_gen.signature().unwrap().get()).into();
+    let ts = key_gen.signature().unwrap().get().into();
     let key = openpgp_card_sequoia::public_key_material_to_key(
         &sig,
         KeyType::Signing,
@@ -283,7 +265,7 @@ pub fn test_get_pub(
     // --
 
     let dec = ca.get_pub_key(KeyType::Decryption)?;
-    let ts = Timestamp::from(key_gen.decryption().unwrap().get()).into();
+    let ts = key_gen.decryption().unwrap().get().into();
     let key = openpgp_card_sequoia::public_key_material_to_key(
         &dec,
         KeyType::Decryption,
@@ -295,7 +277,7 @@ pub fn test_get_pub(
     // --
 
     let auth = ca.get_pub_key(KeyType::Authentication)?;
-    let ts = Timestamp::from(key_gen.authentication().unwrap().get()).into();
+    let ts = key_gen.authentication().unwrap().get().into();
     let key = openpgp_card_sequoia::public_key_material_to_key(
         &auth,
         KeyType::Authentication,

card-functionality/src/util.rs

@@ -18,6 +18,7 @@ use sequoia_openpgp::serialize::stream::{
 };
 use sequoia_openpgp::Cert;
 
+use openpgp_card::card_do::KeyGenerationTime;
 use openpgp_card::{CardApp, KeyType};
 use openpgp_card_sequoia::vka_as_uploadable_key;
 
@@ -26,7 +27,7 @@ pub const SP: &StandardPolicy = &StandardPolicy::new();
 pub(crate) fn upload_subkeys(
     ca: &mut CardApp,
     cert: &Cert,
-) -> Result<Vec<(String, u32)>> {
+) -> Result<Vec<(String, KeyGenerationTime)>> {
     let mut out = vec![];
 
     for kt in [
@@ -45,7 +46,7 @@ pub(crate) fn upload_subkeys(
             .unwrap()
             .as_secs() as u32;
 
-        out.push((fp, creation));
+        out.push((fp, creation.into()));
 
         // upload key
         let cuk = vka_as_uploadable_key(vka, None);

openpgp-card-sequoia/src/lib.rs

@@ -34,8 +34,8 @@ use sequoia_openpgp as openpgp;
 use openpgp_card::algorithm::{Algo, AlgoInfo, Curve};
 use openpgp_card::card_do::{
     ApplicationId, ApplicationRelatedData, Cardholder, ExtendedCap,
-    ExtendedLengthInfo, Features, Fingerprint, Historical, KeySet, PWStatus,
-    SecuritySupportTemplate, Sex,
+    ExtendedLengthInfo, Features, Fingerprint, Historical, KeyGenerationTime,
+    KeySet, PWStatus, SecuritySupportTemplate, Sex,
 };
 use openpgp_card::crypto_data::{
     CardUploadableKey, Cryptogram, EccKey, EccType, Hash, PrivateKeyMaterial,
@@ -92,8 +92,10 @@ pub fn vka_as_uploadable_key(
 pub fn public_key_material_to_key(
     pkm: &PublicKeyMaterial,
     key_type: KeyType,
-    time: SystemTime,
+    time: KeyGenerationTime,
 ) -> Result<Key<PublicParts, UnspecifiedRole>> {
+    let time = Timestamp::from(time.get()).into();
+
     match pkm {
         PublicKeyMaterial::R(rsa) => {
             let k4 = Key4::import_public_rsa(rsa.v(), rsa.n(), Some(time))?;
@@ -362,9 +364,11 @@ impl CardUploadableKey for SequoiaKey {
 
     /// Number of non-leap seconds since January 1, 1970 0:00:00 UTC
     /// (aka "UNIX timestamp")
-    fn get_ts(&self) -> u32 {
+    fn get_ts(&self) -> KeyGenerationTime {
         let ts: Timestamp = Timestamp::try_from(self.key.creation_time())
             .expect("Creation time cannot be converted into u32 timestamp");
+        let ts: u32 = ts.into();
+
         ts.into()
     }
 
@@ -539,11 +543,11 @@ pub fn sign(
 /// timestamp + KeyType" (intended for use with `CardApp.generate_key()`).
 pub fn public_to_fingerprint(
     pkm: &PublicKeyMaterial,
-    ts: SystemTime,
+    time: KeyGenerationTime,
     kt: KeyType,
 ) -> Result<Fingerprint, OpenpgpCardError> {
     // Transform PublicKeyMaterial into a Sequoia Key
-    let key = public_key_material_to_key(pkm, kt, ts)?;
+    let key = public_key_material_to_key(pkm, kt, time)?;
 
     // Get fingerprint from the Sequoia Key
     let fp = key.fingerprint();

openpgp-card/src/card_app.rs

@@ -4,15 +4,14 @@
 use std::borrow::BorrowMut;
 use std::convert::TryFrom;
 use std::convert::TryInto;
-use std::time::SystemTime;
 
 use anyhow::{anyhow, Result};
 
 use crate::algorithm::{Algo, AlgoInfo, AlgoSimple, RsaAttrs};
 use crate::apdu::{commands, response::Response};
 use crate::card_do::{
-    ApplicationRelatedData, Cardholder, Fingerprint, PWStatus,
-    SecuritySupportTemplate, Sex,
+    ApplicationRelatedData, Cardholder, Fingerprint, KeyGenerationTime,
+    PWStatus, SecuritySupportTemplate, Sex,
 };
 use crate::crypto_data::{
     CardUploadableKey, Cryptogram, EccType, Hash, PublicKeyMaterial,
@@ -473,11 +472,12 @@ impl CardApp {
 
     pub fn set_creation_time(
         &mut self,
-        time: u32,
+        time: KeyGenerationTime,
         key_type: KeyType,
     ) -> Result<Response, OpenpgpCardError> {
         // Timestamp update
         let time_value: Vec<u8> = time
+            .get()
             .to_be_bytes()
             .iter()
             .skip_while(|&&e| e == 0)
@@ -625,12 +625,12 @@ impl CardApp {
         &mut self,
         fp_from_pub: fn(
             &PublicKeyMaterial,
-            SystemTime,
+            KeyGenerationTime,
             KeyType,
         ) -> Result<Fingerprint, OpenpgpCardError>,
         key_type: KeyType,
         algo: Option<&Algo>,
-    ) -> Result<(PublicKeyMaterial, u32), OpenpgpCardError> {
+    ) -> Result<(PublicKeyMaterial, KeyGenerationTime), OpenpgpCardError> {
         keys::gen_key_with_metadata(self, fp_from_pub, key_type, algo)
     }
 
@@ -640,12 +640,12 @@ impl CardApp {
         &mut self,
         fp_from_pub: fn(
             &PublicKeyMaterial,
-            SystemTime,
+            KeyGenerationTime,
             KeyType,
         ) -> Result<Fingerprint, OpenpgpCardError>,
         key_type: KeyType,
         algo: AlgoSimple,
-    ) -> Result<(PublicKeyMaterial, u32), OpenpgpCardError> {
+    ) -> Result<(PublicKeyMaterial, KeyGenerationTime), OpenpgpCardError> {
         let algo = algo.get_algo(key_type);
         self.generate_key(fp_from_pub, key_type, Some(&algo))
     }

openpgp-card/src/card_do/mod.rs

@@ -182,7 +182,7 @@ impl SecuritySupportTemplate {
 }
 
 /// An OpenPGP key generation Time
-#[derive(Clone, Eq, PartialEq, Debug)]
+#[derive(Clone, Copy, Eq, PartialEq, Debug)]
 pub struct KeyGenerationTime(u32);
 
 impl KeyGenerationTime {

openpgp-card/src/crypto_data.rs

@@ -8,7 +8,7 @@
 use anyhow::Result;
 
 use crate::algorithm::Algo;
-use crate::card_do::Fingerprint;
+use crate::card_do::{Fingerprint, KeyGenerationTime};
 use crate::errors::OpenpgpCardError;
 
 /// A hash value that can be signed by the card.
@@ -66,7 +66,7 @@ pub trait CardUploadableKey {
     fn get_key(&self) -> Result<PrivateKeyMaterial>;
 
     /// timestamp of (sub)key creation
-    fn get_ts(&self) -> u32;
+    fn get_ts(&self) -> KeyGenerationTime;
 
     /// fingerprint
     fn get_fp(&self) -> Result<Fingerprint, OpenpgpCardError>;

openpgp-card/src/keys.rs

@@ -11,7 +11,7 @@ use crate::algorithm::{Algo, AlgoInfo, Curve, EccAttrs, RsaAttrs};
 use crate::apdu::command::Command;
 use crate::apdu::commands;
 use crate::card_app::CardApp;
-use crate::card_do::Fingerprint;
+use crate::card_do::{Fingerprint, KeyGenerationTime};
 use crate::crypto_data::{
     CardUploadableKey, EccKey, EccPub, PrivateKeyMaterial, PublicKeyMaterial,
     RSAKey, RSAPub,
@@ -26,12 +26,12 @@ pub(crate) fn gen_key_with_metadata(
     card_app: &mut CardApp,
     fp_from_pub: fn(
         &PublicKeyMaterial,
-        SystemTime,
+        KeyGenerationTime,
         KeyType,
     ) -> Result<Fingerprint, OpenpgpCardError>,
     key_type: KeyType,
     algo: Option<&Algo>,
-) -> Result<(PublicKeyMaterial, u32), OpenpgpCardError> {
+) -> Result<(PublicKeyMaterial, KeyGenerationTime), OpenpgpCardError> {
     // set algo on card if it's Some
     if let Some(algo) = algo {
         card_app.set_algorithm_attributes(key_type, algo)?;
@@ -58,10 +58,12 @@ pub(crate) fn gen_key_with_metadata(
         .map_err(|e| OpenpgpCardError::InternalError(anyhow!(e)))?
         .as_secs() as u32;
 
+    let ts = ts.into();
+
     card_app.set_creation_time(ts, key_type)?;
 
     // calculate/store fingerprint
-    let fp = fp_from_pub(&pubkey, time, key_type)?;
+    let fp = fp_from_pub(&pubkey, ts, key_type)?;
     card_app.set_fingerprint(fp, key_type)?;
 
     Ok((pubkey, ts))
@@ -421,7 +423,7 @@ fn rsa_key_cmd(
 fn copy_key_to_card(
     card_app: &mut CardApp,
     key_type: KeyType,
-    ts: u32,
+    ts: KeyGenerationTime,
     fp: Fingerprint,
     algo: &Algo,
     key_cmd: Command,