feat(crypto_box): add consts like SecretBox (#151)

RustCrypto · Dec 20, 2023 · a7f32e4 · a7f32e4
1 parent 9890e14
commit a7f32e4
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/crypto_box/src/lib.rs b/crypto_box/src/lib.rs
@@ -233,6 +233,17 @@ pub struct CryptoBox<C> {
     secretbox: SecretBox<C>,
 }
 
+impl<C> CryptoBox<C> {
+    /// Size of an XSalsa20Poly1305 key in bytes
+    pub const KEY_SIZE: usize = SecretBox::<C>::KEY_SIZE;
+
+    /// Size of an XSalsa20Poly1305 nonce in bytes
+    pub const NONCE_SIZE: usize = SecretBox::<C>::NONCE_SIZE;
+
+    /// Size of a Poly1305 tag in bytes
+    pub const TAG_SIZE: usize = SecretBox::<C>::TAG_SIZE;
+}
+
 // Handwritten instead of derived to avoid `C: Clone` bound
 impl<C> Clone for CryptoBox<C> {
     fn clone(&self) -> Self {