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use blake2::digest::{self, VariableOutput};
#[derive(Debug, Clone)]
pub struct Blake2b256(blake2::VarBlake2b);
impl Default for Blake2b256 {
fn default() -> Self {
Blake2b256(blake2::VarBlake2b::new(32).unwrap())
}
}
impl digest::Update for Blake2b256 {
fn update(&mut self, data: impl AsRef<[u8]>) {
self.0.update(data)
}
}
impl digest::FixedOutput for Blake2b256 {
type OutputSize = digest::generic_array::typenum::U32;
fn finalize_into(self, out: &mut digest::generic_array::GenericArray<u8, Self::OutputSize>) {
self.0.finalize_variable(|slice| {
assert_eq!(slice.len(), 32);
out.copy_from_slice(slice)
});
}
fn finalize_into_reset(
&mut self,
out: &mut digest::generic_array::GenericArray<u8, Self::OutputSize>,
) {
self.0.finalize_variable_reset(|slice| {
assert_eq!(slice.len(), 32);
out.copy_from_slice(slice)
});
}
}
impl digest::Reset for Blake2b256 {
fn reset(&mut self) {
self.0.reset()
}
}