Function decode_string 

pub fn decode_string(
    encoded: &str,
    algorithm: Algorithm,
) -> Result<Decoded, Error>

decode_string(ctx, str, type).

Errors

Error::DecodingFail for a malformed string, or whatever crate::params::validate_inputs returns — the C runs the full validation before accepting the string, so a well-formed string with a zero-length salt yields Error::SaltTooShort and not Error::DecodingFail.

See the module documentation for the known divergences from the C (unrepresentable versions, embedded NULs, and raw/non-ASCII input).