mirror of
https://github.com/fluencelabs/rust-libp2p
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59 lines
2.4 KiB
Rust
59 lines
2.4 KiB
Rust
// Copyright 2018 Parity Technologies (UK) Ltd.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//! This module handles the key agreement process. Typically ECDH.
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use futures::prelude::*;
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use crate::SecioError;
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#[path = "exchange/impl_ring.rs"]
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#[cfg(not(any(target_os = "emscripten", target_os = "unknown")))]
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mod platform;
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#[path = "exchange/impl_webcrypto.rs"]
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#[cfg(any(target_os = "emscripten", target_os = "unknown"))]
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mod platform;
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/// Possible key agreement algorithms.
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#[derive(Copy, Clone, Debug, PartialEq, Eq)]
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pub enum KeyAgreement {
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EcdhP256,
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EcdhP384
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}
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/// Opaque private key type.
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pub struct AgreementPrivateKey(platform::AgreementPrivateKey);
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/// Generates a new key pair as part of the exchange.
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///
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/// Returns the opaque private key and the corresponding public key.
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#[inline]
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pub fn generate_agreement(algorithm: KeyAgreement) -> impl Future<Output = Result<(AgreementPrivateKey, Vec<u8>), SecioError>> {
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platform::generate_agreement(algorithm).map_ok(|(pr, pu)| (AgreementPrivateKey(pr), pu))
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}
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/// Finish the agreement. On success, returns the shared key that both remote agreed upon.
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#[inline]
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pub fn agree(algorithm: KeyAgreement, my_private_key: AgreementPrivateKey, other_public_key: &[u8], out_size: usize)
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-> impl Future<Output = Result<Vec<u8>, SecioError>>
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{
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platform::agree(algorithm, my_private_key.0, other_public_key, out_size)
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}
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