digest

Trait ExtendableOutput

Source 
pub trait ExtendableOutput: Sized + Update {
    type Reader: XofReader;

    // Required method
    fn finalize_xof(self) -> Self::Reader;

    // Provided methods
    fn finalize_xof_into(self, out: &mut [u8]) { ... }
    fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8])
       where Self: Default { ... }
    fn finalize_boxed(self, output_size: usize) -> Box<[u8]> { ... }
}
Expand description

Trait for hash functions with extendable-output (XOF).

Required Associated Types§

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type Reader: XofReader

Reader

Required Methods§

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fn finalize_xof(self) -> Self::Reader

Retrieve XOF reader and consume hasher instance.

Provided Methods§

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fn finalize_xof_into(self, out: &mut [u8])

Finalize XOF and write result into out.

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fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8])
where Self: Default,

Compute hash of data and write it into output.

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fn finalize_boxed(self, output_size: usize) -> Box<[u8]>

Available on crate feature alloc only.

Retrieve result into a boxed slice of the specified size and consume the hasher.

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

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§