devela::_dep::orion::hash

Function digest_from_reader

pub fn digest_from_reader(
    reader: impl Read,
) -> Result<Digest, UnknownCryptoError> ⓘ
Available on crate feature dep_orion only.
Expand description

Hash data from a Read` type using BLAKE2b-256.

See the module-level docs for an example of how to use this function. Internally calls std::io::copy to move data from the reader into the Blake2b writer. Note that the std::io::copy function buffers reads, so passing in a BufReader may be unnecessary.

For lower-level control over reads, writes, buffer sizes, etc., consider using the Blake2b type and its Write implementation directly. See Blake2b’s Write implementation and/or its Write documentation for an example.

§Errors:

This function will only ever return the std::io::ErrorKind::Other variant when it returns an error. Additionally, this will always contain Orion’s UnknownCryptoError type.

Note that if an error is returned, data may still have been consumed from the given reader.