saa-common 0.14.3

Common types and utilities for smart account auth
Documentation 
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use digest::{
    FixedOutput, HashMarker, Output, OutputSizeUser, Reset, Update,
    consts::U32, generic_array::GenericArray,
};

#[derive(Clone, Default)]
pub struct Identity256 {
    array: GenericArray<u8, U32>,
}

impl Update for Identity256 {
    fn update(&mut self, hash: &[u8]) {
        assert_eq!(hash.as_ref().len(), 32);
        self.array = *GenericArray::from_slice(hash);
    }
}
impl OutputSizeUser for Identity256 {
    type OutputSize = U32;
}

impl FixedOutput for Identity256 {
    fn finalize_into(self, out: &mut Output<Self>) {
        *out = self.array;
    }
}

impl HashMarker for Identity256 {}

impl Reset for Identity256 {
    fn reset(&mut self) {
        *self = Self::default();
    }
}