1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113

//! An implementation of the [SHA-2][1] cryptographic hash algorithms.
//!
//! There are 6 standard algorithms specified in the SHA-2 standard:
//!
//! * `Sha224`, which is the 32-bit `Sha256` algorithm with the result truncated
//! to 224 bits.
//! * `Sha256`, which is the 32-bit `Sha256` algorithm.
//! * `Sha384`, which is the 64-bit `Sha512` algorithm with the result truncated
//! to 384 bits.
//! * `Sha512`, which is the 64-bit `Sha512` algorithm.
//! * `Sha512Trunc224`, which is the 64-bit `Sha512` algorithm with the result
//! truncated to 224 bits.
//! * `Sha512Trunc256`, which is the 64-bit `Sha512` algorithm with the result
//! truncated to 256 bits.
//!
//! Algorithmically, there are only 2 core algorithms: `Sha256` and `Sha512`.
//! All other algorithms are just applications of these with different initial
//! hash values, and truncated to different digest bit lengths.
//!
//! # Usage
//!
//! ```rust
//! # #[macro_use] extern crate hex_literal;
//! # extern crate sha2ni;
//! # fn main() {
//! use sha2ni::{Sha256, Sha512, Digest};
//!
//! // create a Sha256 object
//! let mut hasher = Sha256::new();
//!
//! // write input message
//! hasher.input(b"hello world");
//!
//! // read hash digest and consume hasher
//! let result = hasher.result();
//!
//! assert_eq!(result[..], hex!("
//!     b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
//! ")[..]);
//!
//! // same for Sha512
//! let mut hasher = Sha512::new();
//! hasher.input(b"hello world");
//! let result = hasher.result();
//!
//! assert_eq!(result[..], hex!("
//!     309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f
//!     989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
//! ")[..]);
//! # }
//! ```
//!
//! Also see [RustCrypto/hashes][2] readme.
//!
//! [1]: https://en.wikipedia.org/wiki/SHA-2
//! [2]: https://github.com/RustCrypto/hashes
#![no_std]
#![doc(html_logo_url = "https://raw.githubusercontent.com/RustCrypto/meta/master/logo_small.png")]

// Give relevant error messages if the user tries to enable AArch64 asm on unsupported platforms.
#[cfg(all(
    feature = "asm-aarch64",
    target_arch = "aarch64",
    not(target_os = "linux")
))]
compile_error!("Your OS isn’t yet supported for runtime-checking of AArch64 features.");
#[cfg(all(
    feature = "asm-aarch64",
    target_os = "linux",
    not(target_arch = "aarch64")
))]
compile_error!(
    "Enable the \"asm\" feature instead of \"asm-aarch64\" on non-AArch64 Linux systems."
);
#[cfg(all(
    not(feature = "asm-aarch64"),
    feature = "asm",
    target_arch = "aarch64",
    target_os = "linux"
))]
compile_error!("Enable the \"asm-aarch64\" feature on AArch64 if you want to use asm.");

extern crate block_buffer;
extern crate fake_simd as simd;
#[macro_use]
extern crate opaque_debug;
#[macro_use]
pub extern crate digest;
#[cfg(feature = "asm-aarch64")]
extern crate libc;
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
extern crate raw_cpuid;
#[cfg(feature = "asm")]
extern crate sha2_asm;
#[cfg(feature = "std")]
extern crate std;

mod consts;

#[cfg(feature = "asm-aarch64")]
mod aarch64;
mod platform;
mod sha256;
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
mod sha256_intrinsics;
mod sha256_utils;
mod sha512;
#[cfg(any(not(feature = "asm"), feature = "asm-aarch64"))]
mod sha512_utils;

pub use digest::Digest;
pub use sha256::{Sha224, Sha256};
pub use sha512::{Sha384, Sha512, Sha512Trunc224, Sha512Trunc256};