feat: add keychain-services

__security/keychain-services/keychain-services.rs/src/ciphertext.rs

@@ -0,0 +1,48 @@
+//! Ciphertext produced by this library.
+//!
+//! This type doesn't map directly to any type in the Keychain Services API,
+//! but instead provides a newtype for ciphertexts this binding produces.
+
+use crate::key::KeyAlgorithm;
+
+/// Cryptographic signatures
+#[derive(Clone, Debug)]
+pub struct Ciphertext {
+    alg: KeyAlgorithm,
+    bytes: Vec<u8>,
+}
+
+impl Ciphertext {
+    /// Create a new `Ciphertext`
+    pub fn new(alg: KeyAlgorithm, bytes: Vec<u8>) -> Self {
+        // TODO: restrict valid algorithms to encryption algorithms?
+        Self { alg, bytes }
+    }
+
+    /// Get the algorithm which produced this signature
+    pub fn algorithm(&self) -> KeyAlgorithm {
+        self.alg
+    }
+
+    /// Borrow the ciphertext data as bytes
+    pub fn as_bytes(&self) -> &[u8] {
+        &self.bytes
+    }
+
+    /// Convert into a byte vector
+    pub fn into_vec(self) -> Vec<u8> {
+        self.bytes
+    }
+}
+
+impl AsRef<[u8]> for Ciphertext {
+    fn as_ref(&self) -> &[u8] {
+        self.as_bytes()
+    }
+}
+
+impl From<Ciphertext> for Vec<u8> {
+    fn from(ciphertext: Ciphertext) -> Vec<u8> {
+        ciphertext.into_vec()
+    }
+}