yubihsm 0.17.3

Pure Rust client for YubiHSM2 devices
Documentation 
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//! Compute an RSASSA-PKCS#1v1.5 signature of the SHA-256 hash of the given data
//!
//! <https://developers.yubico.com/YubiHSM2/Commands/Sign_Data_Pkcs1.html>

use super::{Command, Response};
use session::{Session, SessionError};
use sha2::{Digest, Sha256};
use Adapter;
use {CommandType, ObjectId};

/// Compute an RSASSA-PKCS#1v1.5 signature of the SHA-256 hash of the given data.
///
/// WARNING: This method has not been tested and is not confirmed to actually work! Use at your
/// own risk!
pub fn sign_rsa_pkcs1v15_sha256<A: Adapter>(
    session: &mut Session<A>,
    key_id: ObjectId,
    data: &[u8],
) -> Result<RSAPKCS1Signature, SessionError> {
    session.send_command(SignDataPKCS1Command {
        key_id,
        digest: Sha256::digest(data).as_slice().into(),
    })
}

/// Request parameters for `command::sign_rsa_pkcs1v15*`
#[derive(Serialize, Deserialize, Debug)]
pub(crate) struct SignDataPKCS1Command {
    /// ID of the key to perform the signature with
    pub key_id: ObjectId,

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

impl Command for SignDataPKCS1Command {
    type ResponseType = RSAPKCS1Signature;
}

/// RSASSA-PKCS#1v1.5 signatures (ASN.1 DER encoded)
#[derive(Serialize, Deserialize, Debug)]
pub struct RSAPKCS1Signature(pub Vec<u8>);

impl Response for RSAPKCS1Signature {
    const COMMAND_TYPE: CommandType = CommandType::SignDataPKCS1;
}

// TODO: use clippy's scoped lints once they work on stable
#[allow(
    unknown_lints,
    renamed_and_removed_lints,
    len_without_is_empty
)]
impl RSAPKCS1Signature {
    /// Unwrap inner byte vector
    pub fn into_vec(self) -> Vec<u8> {
        self.into()
    }

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

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

impl AsRef<[u8]> for RSAPKCS1Signature {
    fn as_ref(&self) -> &[u8] {
        self.0.as_ref()
    }
}

impl Into<Vec<u8>> for RSAPKCS1Signature {
    fn into(self) -> Vec<u8> {
        self.0
    }
}