Crate rs_sha512_224

SHA-512/224 rs_sha512_224 - Secure Hash Algorithm 512/224

The SHA-512/224 hash function is part of the SHA-2 family, which was developed by the National Institute of Standards and Technology (NIST). This hash function is a variant of SHA-512 that outputs a hash value of 224 bits.

This SHA-512/224 hash function is recommended by NIST for most cryptographic functions as it is designed to provide a high level of security and resist known types of cryptographic attacks.

Usage

The crate provides a simple and intuitive API. Users can create a new SHA-512/224 hasher instance, update it with input data, and finalize to get the resultant hash.

Example

Here is an example of how to use the SHA-512/224 hash function in Rust:

let mut sha512_224hasher = Sha512_224State::default().build_hasher();
sha512_224hasher.write(b"hello world");
let u64result = sha512_224hasher.finish();
let bytes_result = HasherContext::finish(&mut sha512_224hasher);
assert_eq!(u64result, 0x22E0D52336F64A99);
assert_eq!(
    format!("{bytes_result:02x}"),
    "22e0d52336f64a998085078b05a6e37b26f8120f43bf4db4c43a64ee"
);
assert_eq!(
    format!("{bytes_result:02X}"),
    "22E0D52336F64A998085078B05A6E37B26F8120F43BF4DB4C43A64EE"
);
assert_eq!(
    bytes_result,
    [
        0x22, 0xE0, 0xD5, 0x23, 0x36, 0xF6, 0x4A, 0x99, 0x80, 0x85, 0x07, 0x8B, 0x05, 0xA6, 0xE3, 0x7B, 0x26, 0xF8, 0x12,
        0x0F, 0x43, 0xBF, 0x4D, 0xB4, 0xC4, 0x3A, 0x64, 0xEE
    ]
)

Or, as a HashSet:

let hello = "hello";
let mut sha512_224hasher1 = Sha512_224Hasher::default();
let mut sha512_224hasher2 = Sha512_224Hasher::default();
let mut sha512_224hasher3 = Sha512_224Hasher::default();

sha512_224hasher1.write(hello.as_bytes());
hello.hash(&mut sha512_224hasher2);
sha512_224hasher3.write(hello.as_bytes());
sha512_224hasher3.write(&[0xFF]);

let u64result1 = sha512_224hasher1.finish();
let u64result2 = sha512_224hasher2.finish();
let u64result3 = sha512_224hasher3.finish();

assert_eq!(u64result1, 0xFE8509ED1FB7DCEF);
assert_eq!(u64result2, 0x22D64CC041AA25EA);
assert_eq!(u64result2, u64result3);
assert_ne!(u64result1, u64result2);

Use Cases

SHA-512/224 is widely used in various security-critical tasks, such as:

• Ensuring data integrity in cryptographic systems.
• Digital signatures and certificate thumbprints.
• In checksumming, where a unique identifier for data is needed.
• Fingerprinting, where unique identifiers are used to mark or identify unique data elements.

NIST recommends using SHA-512/224 for most cryptographic functions, as it provides a good balance between security and performance.

Structs

• Sha512_224Hasher
  Sha512_224Hasher is a type that provides the SHA-512/224 hashing algorithm in RustyShield.
• Sha512_224State
  Sha512_224State represents the state of a SHA-512/224 hashing process.

Traits

• HasherContext
  Overloads the finish Hasher method for a version that mutates itself