Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 86 insertions, 0 deletions

diff --git a/vendor/digest-0.8.1/src/digest.rs b/vendor/digest-0.8.1/src/digest.rs
new file mode 100644
index 000000000..50128e13e
--- /dev/null
+++ b/vendor/digest-0.8.1/src/digest.rs
@@ -0,0 +1,86 @@
+use super::{Input, FixedOutput, Reset};
+use generic_array::{GenericArray, ArrayLength};
+use generic_array::typenum::Unsigned;
+
+/// The `Digest` trait specifies an interface common for digest functions.
+///
+/// It's a convenience wrapper around `Input`, `FixedOutput`, `Reset`, `Clone`,
+/// and `Default` traits. It also provides additional convenience methods.
+pub trait Digest {
+    type OutputSize: ArrayLength<u8>;
+    /// Create new hasher instance
+    fn new() -> Self;
+
+    /// Digest input data.
+    ///
+    /// This method can be called repeatedly for use with streaming messages.
+    fn input<B: AsRef<[u8]>>(&mut self, data: B);
+
+    /// Digest input data in a chained manner.
+    fn chain<B: AsRef<[u8]>>(self, data: B) -> Self where Self: Sized;
+
+    /// Retrieve result and consume hasher instance.
+    fn result(self) -> GenericArray<u8, Self::OutputSize>;
+
+    /// Retrieve result and reset hasher instance.
+    ///
+    /// This method sometimes can be more efficient compared to hasher
+    /// re-creation.
+    fn result_reset(&mut self) -> GenericArray<u8, Self::OutputSize>;
+
+    /// Reset hasher instance to its initial state.
+    fn reset(&mut self);
+
+    /// Get output size of the hasher
+    fn output_size() -> usize;
+
+    /// Convenience function to compute hash of the `data`. It will handle
+    /// hasher creation, data feeding and finalization.
+    ///
+    /// Example:
+    ///
+    /// ```rust,ignore
+    /// println!("{:x}", sha2::Sha256::digest(b"Hello world"));
+    /// ```
+    fn digest(data: &[u8]) -> GenericArray<u8, Self::OutputSize>;
+}
+
+impl<D: Input + FixedOutput + Reset + Clone + Default> Digest for D {
+    type OutputSize = <Self as FixedOutput>::OutputSize;
+
+    fn new() -> Self {
+        Self::default()
+    }
+
+    fn input<B: AsRef<[u8]>>(&mut self, data: B) {
+        Input::input(self, data);
+    }
+
+    fn chain<B: AsRef<[u8]>>(self, data: B) -> Self where Self: Sized {
+        Input::chain(self, data)
+    }
+
+    fn result(self) -> GenericArray<u8, Self::OutputSize> {
+        self.fixed_result()
+    }
+
+    fn result_reset(&mut self) -> GenericArray<u8, Self::OutputSize> {
+        let res = self.clone().fixed_result();
+        self.reset();
+        res
+    }
+
+    fn reset(&mut self) {
+        <Self as Reset>::reset(self)
+    }
+
+    fn output_size() -> usize {
+        Self::OutputSize::to_usize()
+    }
+
+    fn digest(data: &[u8]) -> GenericArray<u8, Self::OutputSize> {
+        let mut hasher = Self::default();
+        Input::input(&mut hasher, data);
+        hasher.fixed_result()
+    }
+}