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| </pre><pre class="rust"><code><span class="comment">// Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| |
| </span><span class="kw">use </span>anyhow::{bail, ensure, Context, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use </span>serde::{Deserialize, Serialize}; |
| <span class="kw">use </span>std::convert::TryInto; |
| |
| <span class="kw">use </span>teaclave_crypto::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub const </span>FILE_AUTH_TAG_LENGTH: usize = <span class="number">16</span>; |
| |
| <span class="attribute">#[derive(Copy, Clone, Default, Debug, Serialize, Deserialize, PartialEq)] |
| </span><span class="kw">pub struct </span>FileAuthTag { |
| tag: [u8; FILE_AUTH_TAG_LENGTH], |
| } |
| |
| <span class="kw">impl </span>FileAuthTag { |
| <span class="kw">pub fn </span>from_bytes(input: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| <span class="macro">ensure!</span>(input.len() == FILE_AUTH_TAG_LENGTH, <span class="string">"Invalid length"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>file_auth_tag = FileAuthTag::default(); |
| file_auth_tag.tag.clone_from_slice(input); |
| <span class="prelude-val">Ok</span>(file_auth_tag) |
| } |
| |
| <span class="kw">pub fn </span>from_hex(input: <span class="kw">impl </span>AsRef<str>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| <span class="kw">let </span>hex = hex::decode(input.as_ref()).context(<span class="string">"Illegal AuthTag provided"</span>)<span class="question-mark">?</span>; |
| <span class="kw">let </span>tag = hex |
| .as_slice() |
| .try_into() |
| .context(<span class="string">"Illegal AuthTag provided"</span>)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(FileAuthTag { tag }) |
| } |
| |
| <span class="kw">pub fn </span>to_hex(<span class="kw-2">&</span><span class="self">self</span>) -> String { |
| hex::encode(<span class="self">self</span>.tag) |
| } |
| |
| <span class="kw">pub fn </span>to_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> Vec<u8> { |
| <span class="self">self</span>.tag.to_vec() |
| } |
| |
| <span class="attribute">#[cfg(test_mode)] |
| </span><span class="kw">pub fn </span>mock() -> <span class="self">Self </span>{ |
| <span class="self">Self </span>{ |
| tag: [<span class="number">0</span>; FILE_AUTH_TAG_LENGTH], |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>std::convert::From<[u8; FILE_AUTH_TAG_LENGTH]> <span class="kw">for </span>FileAuthTag { |
| <span class="kw">fn </span>from(tag: [u8; FILE_AUTH_TAG_LENGTH]) -> <span class="self">Self </span>{ |
| <span class="self">Self </span>{ tag } |
| } |
| } |
| |
| <span class="kw">impl </span>std::cmp::PartialEq<[u8]> <span class="kw">for </span>FileAuthTag { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>[u8]) -> bool { |
| <span class="self">self</span>.tag == other |
| } |
| } |
| |
| <span class="kw">impl </span>std::cmp::PartialEq<[u8; FILE_AUTH_TAG_LENGTH]> <span class="kw">for </span>FileAuthTag { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>[u8; FILE_AUTH_TAG_LENGTH]) -> bool { |
| <span class="kw-2">&</span><span class="self">self</span>.tag[..] == other |
| } |
| } |
| |
| <span class="attribute">#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq)] |
| </span><span class="kw">pub enum </span>FileCrypto { |
| AesGcm128(AesGcm128Key), |
| AesGcm256(AesGcm256Key), |
| TeaclaveFile128(TeaclaveFile128Key), |
| Raw, |
| } |
| |
| <span class="kw">impl </span>FileCrypto { |
| <span class="kw">pub fn </span>new(schema: <span class="kw-2">&</span>str, key: <span class="kw-2">&</span>[u8], iv: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| <span class="kw">let </span>info = <span class="kw">match </span>schema { |
| AesGcm128Key::SCHEMA => { |
| <span class="kw">let </span>crypto = AesGcm128Key::new(key, iv)<span class="question-mark">?</span>; |
| FileCrypto::AesGcm128(crypto) |
| } |
| AesGcm256Key::SCHEMA => { |
| <span class="kw">let </span>crypto = AesGcm256Key::new(key, iv)<span class="question-mark">?</span>; |
| FileCrypto::AesGcm256(crypto) |
| } |
| TeaclaveFile128Key::SCHEMA => { |
| <span class="macro">ensure!</span>(iv.is_empty(), <span class="string">"IV is not empty for teaclave_file_128"</span>); |
| <span class="kw">let </span>crypto = TeaclaveFile128Key::new(key)<span class="question-mark">?</span>; |
| FileCrypto::TeaclaveFile128(crypto) |
| } |
| <span class="string">"raw" </span>=> FileCrypto::Raw, |
| <span class="kw">_ </span>=> <span class="macro">bail!</span>(<span class="string">"Invalid crypto schema: {}"</span>, schema), |
| }; |
| |
| <span class="prelude-val">Ok</span>(info) |
| } |
| |
| <span class="kw">pub fn </span>schema(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw">match </span><span class="self">self </span>{ |
| FileCrypto::AesGcm128(<span class="kw">_</span>) => AesGcm128Key::SCHEMA, |
| FileCrypto::AesGcm256(<span class="kw">_</span>) => AesGcm256Key::SCHEMA, |
| FileCrypto::TeaclaveFile128(<span class="kw">_</span>) => TeaclaveFile128Key::SCHEMA, |
| FileCrypto::Raw => <span class="string">"raw"</span>, |
| } |
| } |
| |
| <span class="kw">pub fn </span>key_iv(<span class="kw-2">&</span><span class="self">self</span>) -> (Vec<u8>, Vec<u8>) { |
| <span class="kw">match </span><span class="self">self </span>{ |
| FileCrypto::AesGcm128(crypto) => (crypto.key.to_vec(), crypto.iv.to_vec()), |
| FileCrypto::AesGcm256(crypto) => (crypto.key.to_vec(), crypto.iv.to_vec()), |
| FileCrypto::TeaclaveFile128(crypto) => (crypto.key.to_vec(), Vec::new()), |
| FileCrypto::Raw => (<span class="macro">vec!</span>[], <span class="macro">vec!</span>[]), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>std::convert::From<AesGcm128Key> <span class="kw">for </span>FileCrypto { |
| <span class="kw">fn </span>from(crypto: AesGcm128Key) -> <span class="self">Self </span>{ |
| FileCrypto::AesGcm128(crypto) |
| } |
| } |
| |
| <span class="kw">impl </span>std::convert::From<AesGcm256Key> <span class="kw">for </span>FileCrypto { |
| <span class="kw">fn </span>from(crypto: AesGcm256Key) -> <span class="self">Self </span>{ |
| FileCrypto::AesGcm256(crypto) |
| } |
| } |
| |
| <span class="kw">impl </span>std::convert::From<TeaclaveFile128Key> <span class="kw">for </span>FileCrypto { |
| <span class="kw">fn </span>from(crypto: TeaclaveFile128Key) -> <span class="self">Self </span>{ |
| FileCrypto::TeaclaveFile128(crypto) |
| } |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>FileCrypto { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| FileCrypto::TeaclaveFile128(TeaclaveFile128Key::random()) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="teaclave_types" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |