chore: checkpoint before Python removal

vendor/sec1/tests/examples/p256-priv.pem

@@ -0,0 +1,5 @@
+-----BEGIN EC PRIVATE KEY-----
+MHcCAQEEIGliQXFWGmM0DeDn2GnyoFSSVY4aBIaLap+FSoZniBiNoAoGCCqGSM49
+AwEHoUQDQgAEHKz/tV8vLO/YnYnrN0smgRUkUoAt7qCZFgaBN9g5z3/EgaREkjBN
+fvZqwRe+/oOo0I8VXytS+fYY3URwKQSODw==
+-----END EC PRIVATE KEY-----

vendor/sec1/tests/private_key.rs

@@ -0,0 +1,43 @@
+//! SEC1 private key tests
+
+#![cfg(feature = "der")]
+
+use der::asn1::ObjectIdentifier;
+use hex_literal::hex;
+use sec1::{EcParameters, EcPrivateKey};
+
+#[cfg(feature = "alloc")]
+use der::Encode;
+
+/// NIST P-256 SEC1 private key encoded as ASN.1 DER.
+///
+/// Note: this key is extracted from the corresponding `p256-priv.der`
+/// example key in the `pkcs8` crate.
+const P256_DER_EXAMPLE: &[u8] = include_bytes!("examples/p256-priv.der");
+
+#[test]
+fn decode_p256_der() {
+    let key = EcPrivateKey::try_from(P256_DER_EXAMPLE).unwrap();
+
+    // Extracted using:
+    // $ openssl asn1parse -in tests/examples/p256-priv.pem
+    assert_eq!(
+        key.private_key,
+        hex!("69624171561A63340DE0E7D869F2A05492558E1A04868B6A9F854A866788188D")
+    );
+    assert_eq!(
+        key.parameters,
+        Some(EcParameters::NamedCurve(
+            ObjectIdentifier::new("1.2.840.10045.3.1.7").unwrap()
+        ))
+    );
+    assert_eq!(key.public_key, Some(hex!("041CACFFB55F2F2CEFD89D89EB374B2681152452802DEEA09916068137D839CF7FC481A44492304D7EF66AC117BEFE83A8D08F155F2B52F9F618DD447029048E0F").as_ref()));
+}
+
+#[cfg(feature = "alloc")]
+#[test]
+fn encode_p256_der() {
+    let key = EcPrivateKey::try_from(P256_DER_EXAMPLE).unwrap();
+    let key_encoded = key.to_der().unwrap();
+    assert_eq!(P256_DER_EXAMPLE, key_encoded);
+}

vendor/sec1/tests/traits.rs

@@ -0,0 +1,100 @@
+//! Tests for SEC1 encoding/decoding traits.
+
+#![cfg(any(feature = "pem", all(feature = "der", feature = "std")))]
+
+use der::SecretDocument;
+use sec1::{DecodeEcPrivateKey, EncodeEcPrivateKey, Result};
+
+#[cfg(feature = "pem")]
+use sec1::der::pem::LineEnding;
+
+#[cfg(feature = "std")]
+use tempfile::tempdir;
+
+#[cfg(all(feature = "pem", feature = "std"))]
+use std::fs;
+
+/// SEC1 `EcPrivateKey` encoded as ASN.1 DER
+const P256_DER_EXAMPLE: &[u8] = include_bytes!("examples/p256-priv.der");
+
+/// SEC1 `EcPrivateKey` encoded as PEM
+#[cfg(feature = "pem")]
+const P256_PEM_EXAMPLE: &str = include_str!("examples/p256-priv.pem");
+
+/// Mock private key type for testing trait impls against.
+pub struct MockPrivateKey(Vec<u8>);
+
+impl AsRef<[u8]> for MockPrivateKey {
+    fn as_ref(&self) -> &[u8] {
+        self.0.as_ref()
+    }
+}
+
+impl DecodeEcPrivateKey for MockPrivateKey {
+    fn from_sec1_der(bytes: &[u8]) -> Result<MockPrivateKey> {
+        Ok(MockPrivateKey(bytes.to_vec()))
+    }
+}
+
+impl EncodeEcPrivateKey for MockPrivateKey {
+    fn to_sec1_der(&self) -> Result<SecretDocument> {
+        Ok(SecretDocument::try_from(self.as_ref())?)
+    }
+}
+
+#[cfg(feature = "pem")]
+#[test]
+fn from_sec1_pem() {
+    let key = MockPrivateKey::from_sec1_pem(P256_PEM_EXAMPLE).unwrap();
+    assert_eq!(key.as_ref(), P256_DER_EXAMPLE);
+}
+
+#[cfg(feature = "std")]
+#[test]
+fn read_sec1_der_file() {
+    let key = MockPrivateKey::read_sec1_der_file("tests/examples/p256-priv.der").unwrap();
+    assert_eq!(key.as_ref(), P256_DER_EXAMPLE);
+}
+
+#[cfg(all(feature = "pem", feature = "std"))]
+#[test]
+fn read_sec1_pem_file() {
+    let key = MockPrivateKey::read_sec1_pem_file("tests/examples/p256-priv.pem").unwrap();
+    assert_eq!(key.as_ref(), P256_DER_EXAMPLE);
+}
+
+#[cfg(feature = "pem")]
+#[test]
+fn to_sec1_pem() {
+    let pem = MockPrivateKey(P256_DER_EXAMPLE.to_vec())
+        .to_sec1_pem(LineEnding::LF)
+        .unwrap();
+
+    assert_eq!(&*pem, P256_PEM_EXAMPLE);
+}
+
+#[cfg(feature = "std")]
+#[test]
+fn write_sec1_der_file() {
+    let dir = tempdir().unwrap();
+    let path = dir.path().join("example.der");
+    MockPrivateKey(P256_DER_EXAMPLE.to_vec())
+        .write_sec1_der_file(&path)
+        .unwrap();
+
+    let key = MockPrivateKey::read_sec1_der_file(&path).unwrap();
+    assert_eq!(key.as_ref(), P256_DER_EXAMPLE);
+}
+
+#[cfg(all(feature = "pem", feature = "std"))]
+#[test]
+fn write_sec1_pem_file() {
+    let dir = tempdir().unwrap();
+    let path = dir.path().join("example.pem");
+    MockPrivateKey(P256_DER_EXAMPLE.to_vec())
+        .write_sec1_pem_file(&path, LineEnding::LF)
+        .unwrap();
+
+    let pem = fs::read_to_string(path).unwrap();
+    assert_eq!(&pem, P256_PEM_EXAMPLE);
+}