pkcs8: provide PrivateKeyInfo type alias with older API

Signed-off-by: Arthur Gautier <baloo@superbaloo.net>

pkcs8/src/lib.rs

@@ -85,7 +85,7 @@ pub(crate) mod encrypted_private_key_info;
 
 pub use crate::{
     error::{Error, Result},
-    private_key_info::{PrivateKeyInfo, PrivateKeyInfoRef},
+    private_key_info::{PrivateKeyInfo, PrivateKeyInfoInner},
     traits::DecodePrivateKey,
     version::Version,
 };

pkcs8/src/private_key_info.rs

@@ -94,7 +94,7 @@ const PUBLIC_KEY_TAG: TagNumber = TagNumber::N1;
 /// [RFC 5208 Section 5]: https://tools.ietf.org/html/rfc5208#section-5
 /// [RFC 5958 Section 2]: https://datatracker.ietf.org/doc/html/rfc5958#section-2
 #[derive(Clone)]
-pub struct PrivateKeyInfo<Params, Key> {
+pub struct PrivateKeyInfoInner<Params, Key> {
     /// X.509 `AlgorithmIdentifier` for the private key type.
     pub algorithm: AlgorithmIdentifier<Params>,
 
@@ -105,8 +105,8 @@ pub struct PrivateKeyInfo<Params, Key> {
     pub public_key: Option<Key>,
 }
 
-impl<Params, Key> PrivateKeyInfo<Params, Key> {
-    /// Create a new PKCS#8 [`PrivateKeyInfo`] message.
+impl<Params, Key> PrivateKeyInfoInner<Params, Key> {
+    /// Create a new PKCS#8 [`PrivateKeyInfoInner`] message.
     ///
     /// This is a helper method which initializes `attributes` and `public_key`
     /// to `None`, helpful if you aren't using those.
@@ -129,7 +129,7 @@ impl<Params, Key> PrivateKeyInfo<Params, Key> {
         }
     }
 }
-impl<'a, Params, Key> PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]> + AsRef<[u8]>,
@@ -166,7 +166,7 @@ where
     }
 }
 
-impl<'a, Params, Key> PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: AsRef<[u8]>,
@@ -186,15 +186,12 @@ where
     }
 }
 
-impl<'a, Params, Key> DecodeValue<'a> for PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> DecodeValue<'a> for PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]>,
 {
-    fn decode_value<R: Reader<'a>>(
-        reader: &mut R,
-        header: Header,
-    ) -> der::Result<PrivateKeyInfo<Params, Key>> {
+    fn decode_value<R: Reader<'a>>(reader: &mut R, header: Header) -> der::Result<Self> {
         reader.read_nested(header.length, |reader| {
             // Parse and validate `version` INTEGER.
             let version = Version::decode(reader)?;
@@ -235,7 +232,7 @@ where
     }
 }
 
-impl<'a, Params, Key> EncodeValue for PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> EncodeValue for PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: AsRef<[u8]>,
@@ -256,14 +253,14 @@ where
     }
 }
 
-impl<'a, Params, Key> Sequence<'a> for PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> Sequence<'a> for PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]> + AsRef<[u8]>,
 {
 }
 
-impl<'a, Params, Key> TryFrom<&'a [u8]> for PrivateKeyInfo<Params, Key>
+impl<'a, Params, Key> TryFrom<&'a [u8]> for PrivateKeyInfoInner<Params, Key>
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]> + AsRef<[u8]>,
@@ -275,13 +272,13 @@ where
     }
 }
 
-impl<Params, Key> fmt::Debug for PrivateKeyInfo<Params, Key>
+impl<Params, Key> fmt::Debug for PrivateKeyInfoInner<Params, Key>
 where
     Params: fmt::Debug,
     Key: fmt::Debug,
 {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_struct("PrivateKeyInfo")
+        f.debug_struct("PrivateKeyInfoInner")
             .field("version", &self.version())
             .field("algorithm", &self.algorithm)
             .field("public_key", &self.public_key)
@@ -290,38 +287,38 @@ where
 }
 
 #[cfg(feature = "alloc")]
-impl<'a, Params, Key> TryFrom<PrivateKeyInfo<Params, Key>> for SecretDocument
+impl<'a, Params, Key> TryFrom<PrivateKeyInfoInner<Params, Key>> for SecretDocument
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]> + AsRef<[u8]>,
 {
     type Error = Error;
 
-    fn try_from(private_key: PrivateKeyInfo<Params, Key>) -> Result<SecretDocument> {
+    fn try_from(private_key: PrivateKeyInfoInner<Params, Key>) -> Result<SecretDocument> {
         SecretDocument::try_from(&private_key)
     }
 }
 
 #[cfg(feature = "alloc")]
-impl<'a, Params, Key> TryFrom<&PrivateKeyInfo<Params, Key>> for SecretDocument
+impl<'a, Params, Key> TryFrom<&PrivateKeyInfoInner<Params, Key>> for SecretDocument
 where
     Params: der::Choice<'a> + Encode,
     Key: From<&'a [u8]> + AsRef<[u8]>,
 {
     type Error = Error;
 
-    fn try_from(private_key: &PrivateKeyInfo<Params, Key>) -> Result<SecretDocument> {
+    fn try_from(private_key: &PrivateKeyInfoInner<Params, Key>) -> Result<SecretDocument> {
         Ok(Self::encode_msg(private_key)?)
     }
 }
 
 #[cfg(feature = "pem")]
-impl<Params, Key> PemLabel for PrivateKeyInfo<Params, Key> {
+impl<Params, Key> PemLabel for PrivateKeyInfoInner<Params, Key> {
     const PEM_LABEL: &'static str = "PRIVATE KEY";
 }
 
 #[cfg(feature = "subtle")]
-impl<Params, Key> ConstantTimeEq for PrivateKeyInfo<Params, Key>
+impl<Params, Key> ConstantTimeEq for PrivateKeyInfoInner<Params, Key>
 where
     Params: Eq,
     Key: PartialEq + AsRef<[u8]>,
@@ -337,15 +334,15 @@ where
 }
 
 #[cfg(feature = "subtle")]
-impl<Params, Key> Eq for PrivateKeyInfo<Params, Key>
+impl<Params, Key> Eq for PrivateKeyInfoInner<Params, Key>
 where
     Params: Eq,
     Key: AsRef<[u8]> + Eq,
 {
 }
 
 #[cfg(feature = "subtle")]
-impl<Params, Key> PartialEq for PrivateKeyInfo<Params, Key>
+impl<Params, Key> PartialEq for PrivateKeyInfoInner<Params, Key>
 where
     Params: Eq,
     Key: PartialEq + AsRef<[u8]>,
@@ -355,19 +352,19 @@ where
     }
 }
 
-/// [`PrivateKeyInfo`] with [`AnyRef`] algorithm parameters, and `&[u8]` key.
-pub type PrivateKeyInfoRef<'a> = PrivateKeyInfo<AnyRef<'a>, &'a [u8]>;
+/// [`PrivateKeyInfoInner`] with [`AnyRef`] algorithm parameters, and `&[u8]` key.
+pub type PrivateKeyInfo<'a> = PrivateKeyInfoInner<AnyRef<'a>, &'a [u8]>;
 
 /// [`PrivateKeyInfo`] with [`Any`] algorithm parameters, and `Box<[u8]>` key.
 #[cfg(feature = "alloc")]
-pub type PrivateKeyInfoOwned = PrivateKeyInfo<Any, Box<[u8]>>;
+pub type PrivateKeyInfoOwned = PrivateKeyInfoInner<Any, Box<[u8]>>;
 
 #[cfg(feature = "alloc")]
 mod allocating {
     use super::*;
     use der::referenced::*;
 
-    impl<'a> RefToOwned<'a> for PrivateKeyInfoRef<'a> {
+    impl<'a> RefToOwned<'a> for PrivateKeyInfo<'a> {
         type Owned = PrivateKeyInfoOwned;
         fn ref_to_owned(&self) -> Self::Owned {
             PrivateKeyInfoOwned {
@@ -379,9 +376,9 @@ mod allocating {
     }
 
     impl OwnedToRef for PrivateKeyInfoOwned {
-        type Borrowed<'a> = PrivateKeyInfoRef<'a>;
+        type Borrowed<'a> = PrivateKeyInfo<'a>;
         fn owned_to_ref(&self) -> Self::Borrowed<'_> {
-            PrivateKeyInfoRef {
+            PrivateKeyInfo {
                 algorithm: self.algorithm.owned_to_ref(),
                 private_key: self.private_key.owned_to_ref(),
                 public_key: self.public_key.owned_to_ref(),

pkcs8/src/traits.rs

@@ -1,6 +1,6 @@
 //! Traits for parsing objects from PKCS#8 encoded documents
 
-use crate::{Error, PrivateKeyInfoRef, Result};
+use crate::{Error, PrivateKeyInfo, Result};
 
 #[cfg(feature = "alloc")]
 use der::SecretDocument;
@@ -49,7 +49,7 @@ pub trait DecodePrivateKey: Sized {
     fn from_pkcs8_pem(s: &str) -> Result<Self> {
         // Validate PEM label
         let label = pem::decode_label(s.as_bytes())?;
-        PrivateKeyInfoRef::validate_pem_label(label)?;
+        PrivateKeyInfo::validate_pem_label(label)?;
 
         let doc = SecretDocument::from_pem(s)?.1;
         Self::from_pkcs8_der(doc.as_bytes())
@@ -81,17 +81,17 @@ pub trait DecodePrivateKey: Sized {
     #[cfg(all(feature = "pem", feature = "std"))]
     fn read_pkcs8_pem_file(path: impl AsRef<Path>) -> Result<Self> {
         let (label, doc) = SecretDocument::read_pem_file(path)?;
-        PrivateKeyInfoRef::validate_pem_label(&label)?;
+        PrivateKeyInfo::validate_pem_label(&label)?;
         Self::from_pkcs8_der(doc.as_bytes())
     }
 }
 
 impl<T> DecodePrivateKey for T
 where
-    T: for<'a> TryFrom<PrivateKeyInfoRef<'a>, Error = Error>,
+    T: for<'a> TryFrom<PrivateKeyInfo<'a>, Error = Error>,
 {
     fn from_pkcs8_der(bytes: &[u8]) -> Result<Self> {
-        Self::try_from(PrivateKeyInfoRef::try_from(bytes)?)
+        Self::try_from(PrivateKeyInfo::try_from(bytes)?)
     }
 }
 
@@ -116,7 +116,7 @@ pub trait EncodePrivateKey {
     #[cfg(feature = "pem")]
     fn to_pkcs8_pem(&self, line_ending: LineEnding) -> Result<Zeroizing<String>> {
         let doc = self.to_pkcs8_der()?;
-        Ok(doc.to_pem(PrivateKeyInfoRef::PEM_LABEL, line_ending)?)
+        Ok(doc.to_pem(PrivateKeyInfo::PEM_LABEL, line_ending)?)
     }
 
     /// Serialize this private key as an encrypted PEM-encoded PKCS#8 private
@@ -142,6 +142,6 @@ pub trait EncodePrivateKey {
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_pkcs8_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
         let doc = self.to_pkcs8_der()?;
-        Ok(doc.write_pem_file(path, PrivateKeyInfoRef::PEM_LABEL, line_ending)?)
+        Ok(doc.write_pem_file(path, PrivateKeyInfo::PEM_LABEL, line_ending)?)
     }
 }

pkcs8/tests/encrypted_private_key.rs

@@ -3,7 +3,7 @@
 #![cfg(feature = "pkcs5")]
 
 use hex_literal::hex;
-use pkcs8::{pkcs5::pbes2, EncryptedPrivateKeyInfo, PrivateKeyInfoRef};
+use pkcs8::{pkcs5::pbes2, EncryptedPrivateKeyInfo, PrivateKeyInfo};
 
 #[cfg(feature = "alloc")]
 use der::Encode;
@@ -168,7 +168,7 @@ fn encrypt_ed25519_der_encpriv_aes256_pbkdf2_sha256() {
     )
     .unwrap();
 
-    let pk_plaintext = PrivateKeyInfoRef::try_from(ED25519_DER_PLAINTEXT_EXAMPLE).unwrap();
+    let pk_plaintext = PrivateKeyInfo::try_from(ED25519_DER_PLAINTEXT_EXAMPLE).unwrap();
     let pk_encrypted = pk_plaintext
         .encrypt_with_params(pbes2_params, PASSWORD)
         .unwrap();
@@ -189,7 +189,7 @@ fn encrypt_ed25519_der_encpriv_aes256_scrypt() {
     )
     .unwrap();
 
-    let pk_plaintext = PrivateKeyInfoRef::try_from(ED25519_DER_PLAINTEXT_EXAMPLE).unwrap();
+    let pk_plaintext = PrivateKeyInfo::try_from(ED25519_DER_PLAINTEXT_EXAMPLE).unwrap();
     let pk_encrypted = pk_plaintext
         .encrypt_with_params(scrypt_params, PASSWORD)
         .unwrap();