Trait digest::XofReader

pub trait XofReader {
    fn read(&mut self, buffer: &mut [u8]);

    fn read_boxed(&mut self, n: usize) -> Box<[u8]> { ... }
}

Trait for describing readers which are used to extract extendable output from XOF (extendable-output function) result.

Required methods

fn read(&mut self, buffer: &mut [u8])

Read output into the buffer. Can be called an unlimited number of times.

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Provided methods

fn read_boxed(&mut self, n: usize) -> Box<[u8]>

This is supported on feature="alloc" only.

Read output into a boxed slice of the specified size.

Can be called an unlimited number of times in combination with read.

Box<[u8]> is used instead of Vec<u8> to save stack space, since they have size of 2 and 3 words respectively.

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Implementors

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