SHA-512 rs-sha512 - Secure Hash Algorithm 512

The SHA-512 hash function is part of the SHA-2 family, which was developed by the National Institute of Standards and Technology (NIST). It is commonly used for cryptographic security, providing a significantly higher security margin than SHA-1 and SHA-256.

Usage

The crate provides a simple and intuitive API. Users can create a new SHA-512 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 hash function in Rust:

# use std::hash::{BuildHasher, Hasher};
# use rs_sha512::Sha512State;
let mut sha512hasher = Sha512State::default().build_hasher();
sha512hasher.write(b"hello world");
let result = sha512hasher.finish();
assert_eq!(result, 0xDCD6DFFBC902F2B4);

Or, as a HashSet:

# use std::{
#     collections::HashSet,
#     hash::{BuildHasher, Hash, Hasher}
# };
# use rs_sha512::Sha512Hasher;
let hello = "hello";
let mut sha512hasher1 = Sha512Hasher::default();
let mut sha512hasher2 = Sha512Hasher::default();
let mut sha512hasher3 = Sha512Hasher::default();

sha512hasher1.write(hello.as_bytes());
hello.hash(&mut sha512hasher2);
sha512hasher3.write(hello.as_bytes());
sha512hasher3.write(&[0xFF]);

let u64result1 = sha512hasher1.finish();
let u64result2 = sha512hasher2.finish();
let u64result3 = sha512hasher3.finish();

assert_eq!(u64result1, 0xFDF6F77AD3EA3D73);
assert_eq!(u64result2, 0x7F95FBFFBD799AF2);
assert_eq!(u64result2, u64result3);
assert_ne!(u64result1, u64result2)

Use Cases

SHA-512 is suitable for a wide range of applications, including but not limited to:

• Digital Signatures and Certificate authorities: for ensuring the authenticity of digital assets.
• Password Storage: it is often used in password hashing schemes, such as bcrypt, scrypt, and Argon2.
• Ensuring the integrity of data transmitted over networks.

NIST recommends SHA-512 for cryptographic functions where a stronger security guarantee is required. In addition, SHA-512 is also often used for checksumming and fingerprinting.