特性 Hash 

pub trait Hash: Send + Sync {
    // Required methods
    fn start(&self) -> Box<dyn Context>;
    fn hash(&self, data: &[u8]) -> Output;
    fn output_len(&self) -> usize;
    fn algorithm(&self) -> HashAlgorithm;

    // Provided method
    fn fips(&self) -> bool { ... }
}

Describes 一个 single cryptographic hash function.

This interface can do both one-shot 并 incremental hashing, using Hash::hash() 并 Hash::start() respectively.

必需方法

fn start(&self) -> Box<dyn Context>

Start an incremental hash computation.

fn hash(&self, data: &[u8]) -> Output

Return 输出 of this hash function with input data。

fn output_len(&self) -> usize

此 length in bytes of this hash function’s output.

fn algorithm(&self) -> HashAlgorithm

这是哪个哈希函数，例如 HashAlgorithm::SHA256。

提供方法

fn fips(&self) -> bool

Return true if this is 由 FIPS 批准的实现支持。

实现者