Trait HashHal 

pub trait HashHal {
    // Required methods
    fn hmac_sha256(
        &mut self,
        key: &[u8],
        message: &[u8],
        output: &mut [u8; 32],
    ) -> impl Future<Output = Result<(), HalError>>;
    fn sha256(
        &mut self,
        message: &[u8],
        output: &mut [u8; 32],
    ) -> impl Future<Output = Result<(), HalError>>;
}

Hash/HMAC hardware abstraction.

Provides cryptographic hash functions. Implementations may use hardware accelerators or software implementations depending on platform capabilities.

Example

async fn compute_hash<H: HashHal>(hash: &mut H, data: &[u8]) -> Result<[u8; 32], HalError> {
    let mut output = [0u8; 32];
    hash.sha256(data, &mut output).await?;
    Ok(output)
}

Required Methods

fn hmac_sha256( &mut self, key: &[u8], message: &[u8], output: &mut [u8; 32], ) -> impl Future<Output = Result<(), HalError>>

Compute HMAC-SHA256.

Computes Hash-based Message Authentication Code using SHA256. Useful for message authentication and key derivation.

Arguments

• key - Secret key for HMAC.
• message - Data to authenticate.
• output - Output buffer for 32-byte HMAC result.

Returns

Ok(()) on success with result in output, or an error on failure.

fn sha256( &mut self, message: &[u8], output: &mut [u8; 32], ) -> impl Future<Output = Result<(), HalError>>

Compute SHA256.

Computes the SHA256 hash of the input message.

Arguments

• message - Data to hash.
• output - Output buffer for 32-byte hash result.

Returns

Ok(()) on success with result in output, or an error on failure.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors