64 lines
1.3 KiB
Rust
64 lines
1.3 KiB
Rust
//! fuzztarget-only Sha2 context with a dummy Sha256 and Sha512 hashers.
|
|
|
|
use crypto::digest::Digest;
|
|
|
|
#[derive(Clone, Copy)]
|
|
/// Dummy Sha256 that hashes the input, but only returns the first byte of output, masking the
|
|
/// rest to 0s.
|
|
pub struct Sha256 {
|
|
state: u8,
|
|
}
|
|
|
|
impl Sha256 {
|
|
/// Constructs a new dummy Sha256 context
|
|
pub fn new() -> Sha256 {
|
|
Sha256 {
|
|
state: 0,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Digest for Sha256 {
|
|
fn result(&mut self, data: &mut [u8]) {
|
|
data[0] = self.state;
|
|
for i in 1..32 {
|
|
data[i] = 0;
|
|
}
|
|
}
|
|
|
|
fn input(&mut self, data: &[u8]) { for i in data { self.state ^= i; } }
|
|
fn reset(&mut self) { self.state = 0; }
|
|
fn output_bits(&self) -> usize { 256 }
|
|
fn block_size(&self) -> usize { 64 }
|
|
}
|
|
|
|
#[derive(Clone, Copy)]
|
|
/// Dummy Sha512 that hashes the input, but only returns the first byte of output, masking the
|
|
/// rest to 0s.
|
|
pub struct Sha512 {
|
|
state: u8,
|
|
}
|
|
|
|
impl Sha512 {
|
|
/// Constructs a new dummy Sha512 context
|
|
pub fn new() -> Sha512 {
|
|
Sha512 {
|
|
state: 0xff,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Digest for Sha512 {
|
|
fn result(&mut self, data: &mut [u8]) {
|
|
data[0] = self.state;
|
|
for i in 1..64 {
|
|
data[i] = 0;
|
|
}
|
|
}
|
|
|
|
fn input(&mut self, data: &[u8]) { for i in data { self.state ^= i; } }
|
|
fn reset(&mut self) { self.state = 0xff; }
|
|
fn output_bits(&self) -> usize { 512 }
|
|
fn block_size(&self) -> usize { 128 }
|
|
}
|