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/*
 * Copyright (C) 2015 Benjamin Fry <benjaminfry@me.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

//! dns security extension related modules

mod algorithm;
mod digest_type;
#[cfg(any(feature = "openssl", feature = "ring"))]
mod ec_public_key;
mod nsec3;
pub mod public_key;
pub mod rdata;
#[cfg(any(feature = "openssl", feature = "ring"))]
mod rsa_public_key;
mod supported_algorithm;
pub mod tbs;
mod trust_anchor;
mod verifier;

pub use self::algorithm::Algorithm;
pub use self::digest_type::DigestType;
pub use self::nsec3::Nsec3HashAlgorithm;
pub use self::public_key::PublicKey;
pub use self::public_key::PublicKeyBuf;
pub use self::public_key::PublicKeyEnum;
pub use self::supported_algorithm::SupportedAlgorithms;
pub use self::tbs::TBS;
pub use self::trust_anchor::TrustAnchor;
pub use self::verifier::Verifier;

#[cfg(all(not(feature = "ring"), feature = "openssl"))]
#[cfg_attr(docsrs, doc(cfg(all(not(feature = "ring"), feature = "openssl"))))]
pub use openssl::hash::DigestBytes as Digest;

#[cfg(feature = "ring")]
#[cfg_attr(docsrs, doc(cfg(feature = "ring")))]
pub use ring::digest::Digest;

/// This is an empty type, enable Ring or OpenSSL for this feature
#[cfg(not(any(feature = "openssl", feature = "ring")))]
#[cfg_attr(docsrs, doc(cfg(not(any(feature = "openssl", feature = "ring")))))]
#[derive(Clone, Copy, Debug)]
pub struct Digest;

#[cfg(not(any(feature = "openssl", feature = "ring")))]
#[cfg_attr(docsrs, doc(cfg(not(any(feature = "openssl", feature = "ring")))))]
#[allow(clippy::should_implement_trait)]
impl Digest {
    /// This is an empty type, enable Ring or OpenSSL for this feature
    pub fn as_ref(&self) -> &Self {
        self
    }

    /// This is an empty type, enable Ring or OpenSSL for this feature
    #[allow(clippy::wrong_self_convention)]
    pub fn to_owned(&self) -> Vec<u8> {
        vec![]
    }
}