Struct Hasher
pub struct Hasher { /* private fields */ }
Expand description
Provides message digest (hash) computation.
§Examples
Calculate a hash in one go:
use rama_boring::hash::{hash, MessageDigest};
let data = b"\x42\xF4\x97\xE0";
let spec = b"\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2";
let res = hash(MessageDigest::md5(), data).unwrap();
assert_eq!(&*res, spec);
Supply the input in chunks:
use rama_boring::hash::{Hasher, MessageDigest};
let data = [b"\x42\xF4", b"\x97\xE0"];
let spec = b"\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2";
let mut h = Hasher::new(MessageDigest::md5()).unwrap();
h.update(data[0]).unwrap();
h.update(data[1]).unwrap();
let res = h.finish().unwrap();
assert_eq!(&*res, spec);
§Warning
Don’t actually use MD5 and SHA-1 hashes, they’re not secure anymore.
Don’t ever hash passwords, use the functions in the pkcs5
module or bcrypt/scrypt instead.
For extendable output functions (XOFs, i.e. SHAKE128/SHAKE256), you must use finish_xof instead of finish and provide a buf to store the hash. The hash will be as long as the buf.
Implementations§
§impl Hasher
impl Hasher
pub fn new(ty: MessageDigest) -> Result<Hasher, ErrorStack>
pub fn new(ty: MessageDigest) -> Result<Hasher, ErrorStack>
Creates a new Hasher
with the specified hash type.
pub fn update(&mut self, data: &[u8]) -> Result<(), ErrorStack>
pub fn update(&mut self, data: &[u8]) -> Result<(), ErrorStack>
Feeds data into the hasher.
pub fn finish(&mut self) -> Result<DigestBytes, ErrorStack>
pub fn finish(&mut self) -> Result<DigestBytes, ErrorStack>
Returns the hash of the data written and resets the non-XOF hasher.
pub fn finish_xof(&mut self, buf: &mut [u8]) -> Result<(), ErrorStack>
pub fn finish_xof(&mut self, buf: &mut [u8]) -> Result<(), ErrorStack>
Writes the hash of the data into the supplied buf and resets the XOF hasher. The hash will be as long as the buf.
Trait Implementations§
§impl Write for Hasher
impl Write for Hasher
§fn write(&mut self, buf: &[u8]) -> Result<usize, Error>
fn write(&mut self, buf: &[u8]) -> Result<usize, Error>
Writes a buffer into this writer, returning how many bytes were written. Read more
§fn flush(&mut self) -> Result<(), Error>
fn flush(&mut self) -> Result<(), Error>
Flushes this output stream, ensuring that all intermediately buffered
contents reach their destination. Read more
Source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector
)1.0.0 · Source§fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
Attempts to write an entire buffer into this writer. Read more
Source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
🔬This is a nightly-only experimental API. (
write_all_vectored
)Attempts to write multiple buffers into this writer. Read more
impl Send for Hasher
impl Sync for Hasher
Auto Trait Implementations§
impl Freeze for Hasher
impl RefUnwindSafe for Hasher
impl Unpin for Hasher
impl UnwindSafe for Hasher
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Writes an unsigned 8 bit integer to the underlying writer. Read more
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Writes a signed 8 bit integer to the underlying writer. Read more
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Writes a signed 128 bit integer to the underlying writer.
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