pub struct Hasher { /* private fields */ }
Expand description
Provides message digest (hash) computation.
Examples
Calculate a hash in one go:
use openssl::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 openssl::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.
Implementations
sourceimpl Hasher
impl Hasher
sourcepub fn new(ty: MessageDigest) -> Result<Hasher, ErrorStack>
pub fn new(ty: MessageDigest) -> Result<Hasher, ErrorStack>
Creates a new Hasher
with the specified hash type.
sourcepub 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 hasher.
Trait Implementations
sourceimpl Write for Hasher
impl Write for Hasher
sourcefn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this writer, returning how many bytes were written. Read more
sourcefn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered
contents reach their destination. Read more
sourcefn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector
)1.0.0 · sourcefn 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
sourcefn 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
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more