341 lines
8.6 KiB
Rust
341 lines
8.6 KiB
Rust
//! The SHA family of hashes.
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use libc::c_void;
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use ffi;
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use std::mem;
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/// Computes the SHA1 hash of some data.
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///
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/// # Warning
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///
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/// SHA1 is known to be insecure - it should not be used unless required for
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/// compatibility with existing systems.
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#[inline]
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pub fn sha1(data: &[u8]) -> [u8; 20] {
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unsafe {
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let mut hash: [u8; 20] = mem::uninitialized();
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ffi::SHA1(data.as_ptr(), data.len(), hash.as_mut_ptr());
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hash
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}
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}
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/// Computes the SHA224 hash of some data.
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#[inline]
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pub fn sha224(data: &[u8]) -> [u8; 28] {
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unsafe {
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let mut hash: [u8; 28] = mem::uninitialized();
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ffi::SHA224(data.as_ptr(), data.len(), hash.as_mut_ptr());
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hash
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}
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}
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/// Computes the SHA256 hash of some data.
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#[inline]
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pub fn sha256(data: &[u8]) -> [u8; 32] {
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unsafe {
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let mut hash: [u8; 32] = mem::uninitialized();
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ffi::SHA256(data.as_ptr(), data.len(), hash.as_mut_ptr());
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hash
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}
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}
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/// Computes the SHA384 hash of some data.
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#[inline]
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pub fn sha384(data: &[u8]) -> [u8; 48] {
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unsafe {
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let mut hash: [u8; 48] = mem::uninitialized();
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ffi::SHA384(data.as_ptr(), data.len(), hash.as_mut_ptr());
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hash
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}
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}
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/// Computes the SHA512 hash of some data.
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#[inline]
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pub fn sha512(data: &[u8]) -> [u8; 64] {
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unsafe {
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let mut hash: [u8; 64] = mem::uninitialized();
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ffi::SHA512(data.as_ptr(), data.len(), hash.as_mut_ptr());
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hash
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}
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}
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/// An object which calculates a SHA1 hash of some data.
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///
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/// # Warning
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///
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/// SHA1 is known to be insecure - it should not be used unless required for
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/// compatibility with existing systems.
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pub struct Sha1(ffi::SHA_CTX);
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impl Sha1 {
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/// Creates a new hasher.
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#[inline]
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pub fn new() -> Sha1 {
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unsafe {
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let mut ctx = mem::uninitialized();
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ffi::SHA1_Init(&mut ctx);
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Sha1(ctx)
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}
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}
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/// Feeds some data into the hasher.
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///
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/// This can be called multiple times.
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#[inline]
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pub fn update(&mut self, buf: &[u8]) {
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unsafe {
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ffi::SHA1_Update(&mut self.0, buf.as_ptr() as *const c_void, buf.len());
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}
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}
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/// Returns the hash of the data.
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#[inline]
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pub fn finish(mut self) -> [u8; 20] {
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unsafe {
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let mut hash: [u8; 20] = mem::uninitialized();
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ffi::SHA1_Final(hash.as_mut_ptr(), &mut self.0);
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hash
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}
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}
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}
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/// An object which calculates a SHA224 hash of some data.
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pub struct Sha224(ffi::SHA256_CTX);
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impl Sha224 {
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/// Creates a new hasher.
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#[inline]
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pub fn new() -> Sha224 {
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unsafe {
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let mut ctx = mem::uninitialized();
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ffi::SHA224_Init(&mut ctx);
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Sha224(ctx)
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}
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}
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/// Feeds some data into the hasher.
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///
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/// This can be called multiple times.
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#[inline]
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pub fn update(&mut self, buf: &[u8]) {
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unsafe {
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ffi::SHA224_Update(&mut self.0, buf.as_ptr() as *const c_void, buf.len());
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}
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}
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/// Returns the hash of the data.
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#[inline]
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pub fn finish(mut self) -> [u8; 28] {
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unsafe {
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let mut hash: [u8; 28] = mem::uninitialized();
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ffi::SHA224_Final(hash.as_mut_ptr(), &mut self.0);
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hash
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}
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}
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}
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/// An object which calculates a SHA256 hash of some data.
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pub struct Sha256(ffi::SHA256_CTX);
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impl Sha256 {
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/// Creates a new hasher.
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#[inline]
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pub fn new() -> Sha256 {
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unsafe {
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let mut ctx = mem::uninitialized();
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ffi::SHA256_Init(&mut ctx);
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Sha256(ctx)
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}
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}
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/// Feeds some data into the hasher.
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///
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/// This can be called multiple times.
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#[inline]
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pub fn update(&mut self, buf: &[u8]) {
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unsafe {
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ffi::SHA256_Update(&mut self.0, buf.as_ptr() as *const c_void, buf.len());
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}
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}
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/// Returns the hash of the data.
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#[inline]
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pub fn finish(mut self) -> [u8; 32] {
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unsafe {
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let mut hash: [u8; 32] = mem::uninitialized();
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ffi::SHA256_Final(hash.as_mut_ptr(), &mut self.0);
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hash
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}
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}
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}
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/// An object which calculates a SHA384 hash of some data.
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pub struct Sha384(ffi::SHA512_CTX);
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impl Sha384 {
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/// Creates a new hasher.
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#[inline]
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pub fn new() -> Sha384 {
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unsafe {
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let mut ctx = mem::uninitialized();
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ffi::SHA384_Init(&mut ctx);
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Sha384(ctx)
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}
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}
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/// Feeds some data into the hasher.
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///
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/// This can be called multiple times.
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#[inline]
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pub fn update(&mut self, buf: &[u8]) {
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unsafe {
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ffi::SHA384_Update(&mut self.0, buf.as_ptr() as *const c_void, buf.len());
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}
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}
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/// Returns the hash of the data.
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#[inline]
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pub fn finish(mut self) -> [u8; 48] {
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unsafe {
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let mut hash: [u8; 48] = mem::uninitialized();
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ffi::SHA384_Final(hash.as_mut_ptr(), &mut self.0);
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hash
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}
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}
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}
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/// An object which calculates a SHA512 hash of some data.
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pub struct Sha512(ffi::SHA512_CTX);
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impl Sha512 {
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/// Creates a new hasher.
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#[inline]
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pub fn new() -> Sha512 {
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unsafe {
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let mut ctx = mem::uninitialized();
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ffi::SHA512_Init(&mut ctx);
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Sha512(ctx)
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}
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}
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/// Feeds some data into the hasher.
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///
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/// This can be called multiple times.
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#[inline]
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pub fn update(&mut self, buf: &[u8]) {
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unsafe {
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ffi::SHA512_Update(&mut self.0, buf.as_ptr() as *const c_void, buf.len());
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}
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}
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/// Returns the hash of the data.
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#[inline]
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pub fn finish(mut self) -> [u8; 64] {
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unsafe {
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let mut hash: [u8; 64] = mem::uninitialized();
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ffi::SHA512_Final(hash.as_mut_ptr(), &mut self.0);
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hash
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}
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}
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}
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#[cfg(test)]
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mod test {
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use hex::ToHex;
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use super::*;
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#[test]
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fn standalone_1() {
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let data = b"abc";
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let expected = "a9993e364706816aba3e25717850c26c9cd0d89d";
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assert_eq!(sha1(data).to_hex(), expected);
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}
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#[test]
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fn struct_1() {
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let expected = "a9993e364706816aba3e25717850c26c9cd0d89d";
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let mut hasher = Sha1::new();
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hasher.update(b"a");
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hasher.update(b"bc");
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assert_eq!(hasher.finish().to_hex(), expected);
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}
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#[test]
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fn standalone_224() {
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let data = b"abc";
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let expected = "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7";
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assert_eq!(sha224(data).to_hex(), expected);
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}
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#[test]
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fn struct_224() {
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let expected = "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7";
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let mut hasher = Sha224::new();
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hasher.update(b"a");
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hasher.update(b"bc");
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assert_eq!(hasher.finish().to_hex(), expected);
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}
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#[test]
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fn standalone_256() {
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let data = b"abc";
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let expected = "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad";
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assert_eq!(sha256(data).to_hex(), expected);
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}
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#[test]
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fn struct_256() {
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let expected = "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad";
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let mut hasher = Sha256::new();
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hasher.update(b"a");
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hasher.update(b"bc");
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assert_eq!(hasher.finish().to_hex(), expected);
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}
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#[test]
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fn standalone_384() {
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let data = b"abc";
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let expected = "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e\
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7cc2358baeca134c825a7";
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assert_eq!((&sha384(data)[..]).to_hex(), expected);
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}
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#[test]
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fn struct_384() {
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let expected = "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e\
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7cc2358baeca134c825a7";
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let mut hasher = Sha384::new();
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hasher.update(b"a");
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hasher.update(b"bc");
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assert_eq!((&hasher.finish()[..]).to_hex(), expected);
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}
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#[test]
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fn standalone_512() {
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let data = b"abc";
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let expected = "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274\
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fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f";
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assert_eq!((&sha512(data)[..]).to_hex(), expected);
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}
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#[test]
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fn struct_512() {
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let expected = "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274\
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fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f";
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let mut hasher = Sha512::new();
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hasher.update(b"a");
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hasher.update(b"bc");
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assert_eq!((&hasher.finish()[..]).to_hex(), expected);
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}
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}
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