yubihsm 0.20.0

Pure Rust client for YubiHSM2 devices with support for HTTP and USB-based access to the device. Supports most HSM functionality including ECDSA, Ed25519, HMAC, and RSA.
Documentation 
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//! Compute an RSASSA-PSS signature of the SHA-256 hash of the given data
//!
//! <https://developers.yubico.com/YubiHSM2/Commands/Sign_Pss.html>

use crate::{
    algorithm::Algorithm,
    command::{Command, CommandCode},
    object::ObjectId,
    response::Response,
};

/// Maximum message size supported for RSASSA-PSS
pub const RSA_PSS_MAX_MESSAGE_SIZE: usize = 0xFFFF;

/// Request parameters for `command::sign_rsa_pss*`
#[derive(Serialize, Deserialize, Debug)]
pub(crate) struct SignPssCommand {
    /// ID of the key to perform the signature with
    pub key_id: ObjectId,

    /// Hash algorithm to use for MGF1
    pub mgf1_hash_alg: Algorithm,

    /// Salt length
    pub salt_len: u16,

    /// Digest of data to be signed
    pub digest: Vec<u8>,
}

impl Command for SignPssCommand {
    type ResponseType = RsaPssSignature;
}

/// RSASSA-PSS signatures (ASN.1 DER encoded)
#[derive(Serialize, Deserialize, Debug)]
pub struct RsaPssSignature(pub Vec<u8>);

impl Response for RsaPssSignature {
    const COMMAND_CODE: CommandCode = CommandCode::SignPss;
}

#[allow(clippy::len_without_is_empty)]
impl RsaPssSignature {
    /// Unwrap inner byte vector
    pub fn into_vec(self) -> Vec<u8> {
        self.into()
    }

    /// Get length of the signature
    pub fn len(&self) -> usize {
        self.0.len()
    }

    /// Get slice of the inner byte vector
    pub fn as_slice(&self) -> &[u8] {
        self.as_ref()
    }
}

impl AsRef<[u8]> for RsaPssSignature {
    fn as_ref(&self) -> &[u8] {
        self.0.as_ref()
    }
}

impl Into<Vec<u8>> for RsaPssSignature {
    fn into(self) -> Vec<u8> {
        self.0
    }
}