Module sha2 

An implementation of the SHA-2 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

An example of using Sha256 is:

use self::cryptoxide::digest::Digest;
use self::cryptoxide::sha2::Sha256;

// create a Sha256 object
let mut hasher = Sha256::new();

// write input message
hasher.input_str("hello world");

// read hash digest
let hex = hasher.result_str();

assert_eq!(hex,
           concat!("b94d27b9934d3e08a52e52d7da7dabfa",
                   "c484efe37a5380ee9088f7ace2efcde9"));

An example of using Sha512 is:

use self::cryptoxide::digest::Digest;
use self::cryptoxide::sha2::Sha512;

// create a Sha512 object
let mut hasher = Sha512::new();

// write input message
hasher.input_str("hello world");

// read hash digest
let hex = hasher.result_str();

assert_eq!(hex,
           concat!("309ecc489c12d6eb4cc40f50c902f2b4",
                   "d0ed77ee511a7c7a9bcd3ca86d4cd86f",
                   "989dd35bc5ff499670da34255b45b0cf",
                   "d830e81f605dcf7dc5542e93ae9cd76f"));

Structs

Sha224

The hash algorithm context

Sha256

The hash algorithm context

Sha384

The hash algorithm context

Sha512

The hash algorithm context

Sha512Trunc224

The hash algorithm context

Sha512Trunc256

The hash algorithm context