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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">extern crate </span>base64; |
| <span class="kw">use </span>anyhow::{anyhow, bail, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use </span>ring::aead::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::convert::TryFrom; |
| <span class="kw">use </span>std::str; |
| <span class="kw">use </span>teaclave_types::{FunctionArguments, FunctionRuntime}; |
| |
| <span class="attribute">#[derive(Default)] |
| </span><span class="kw">pub struct </span>OnlineDecrypt; |
| |
| <span class="attribute">#[derive(serde::Deserialize)] |
| </span><span class="kw">struct </span>OnlineDecryptArguments { |
| key: String, |
| nonce: String, |
| encrypted_data: String, |
| algorithm: String, |
| } |
| |
| <span class="kw">impl </span>TryFrom<FunctionArguments> <span class="kw">for </span>OnlineDecryptArguments { |
| <span class="kw">type </span>Error = anyhow::Error; |
| |
| <span class="kw">fn </span>try_from(arguments: FunctionArguments) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| <span class="kw">use </span>anyhow::Context; |
| serde_json::from_str(<span class="kw-2">&</span>arguments.into_string()).context(<span class="string">"Cannot deserialize arguments"</span>) |
| } |
| } |
| |
| <span class="kw">fn </span>decrypt( |
| key: <span class="kw-2">&</span>[u8], |
| nonce_data: <span class="kw-2">&</span>[u8], |
| data: <span class="kw-2">&mut </span>Vec<u8>, |
| alg: <span class="kw-2">&</span><span class="lifetime">'static </span>ring::aead::Algorithm, |
| ) -> anyhow::Result<()> { |
| <span class="kw">let </span>key = LessSafeKey::new(UnboundKey::new(alg, key).map_err(|<span class="kw">_</span>| <span class="macro">anyhow!</span>(<span class="string">"decryption error"</span>))<span class="question-mark">?</span>); |
| <span class="kw">let </span>nonce = Nonce::try_assume_unique_for_key(<span class="kw-2">&</span>nonce_data[<span class="number">0</span>..<span class="number">12</span>]) |
| .map_err(|<span class="kw">_</span>| <span class="macro">anyhow!</span>(<span class="string">"decryption error"</span>))<span class="question-mark">?</span>; |
| key.open_in_place(nonce, Aad::empty(), data) |
| .map_err(|<span class="kw">_</span>| <span class="macro">anyhow!</span>(<span class="string">"decryption error"</span>))<span class="question-mark">?</span>; |
| data.truncate(data.len() - alg.tag_len()); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>decrypt_string_base64( |
| key: <span class="kw-2">&</span>str, |
| nonce_str: <span class="kw-2">&</span>str, |
| encrypted: <span class="kw-2">&</span>str, |
| alg: <span class="kw-2">&</span><span class="lifetime">'static </span>ring::aead::Algorithm, |
| ) -> anyhow::Result<String> { |
| <span class="kw">let </span>decoded_key = base64::decode(key)<span class="question-mark">?</span>; |
| <span class="kw">let </span>nonce = base64::decode(nonce_str)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>data_vec = base64::decode(encrypted)<span class="question-mark">?</span>; |
| |
| decrypt(<span class="kw-2">&</span>decoded_key, <span class="kw-2">&</span>nonce, <span class="kw-2">&mut </span>data_vec, alg).map_err(|<span class="kw">_</span>| <span class="macro">anyhow!</span>(<span class="string">"decryption error"</span>))<span class="question-mark">?</span>; |
| <span class="kw">let </span>string = str::from_utf8(<span class="kw-2">&</span>data_vec).map_err(|<span class="kw">_</span>| <span class="macro">anyhow!</span>(<span class="string">"base64 decoded error"</span>))<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(string.to_string()) |
| } |
| |
| <span class="kw">impl </span>OnlineDecrypt { |
| <span class="kw">pub const </span>NAME: <span class="kw-2">&</span><span class="lifetime">'static </span>str = <span class="string">"builtin_online_decrypt"</span>; |
| |
| <span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| Default::default() |
| } |
| |
| <span class="kw">pub fn </span>run( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| arguments: FunctionArguments, |
| _runtime: FunctionRuntime, |
| ) -> anyhow::Result<String> { |
| <span class="kw">let </span>args = OnlineDecryptArguments::try_from(arguments)<span class="question-mark">?</span>; |
| <span class="kw">let </span>key = args.key; |
| <span class="kw">let </span>nonce = args.nonce; |
| <span class="kw">let </span>encrypted_data = args.encrypted_data; |
| <span class="kw">let </span>algorithm = <span class="kw-2">&</span>args.algorithm[..]; |
| |
| <span class="kw">let </span>alg = <span class="kw">match </span>algorithm { |
| <span class="string">"aes128gcm" </span>=> <span class="kw-2">&</span>AES_128_GCM, |
| <span class="string">"aes256gcm" </span>=> <span class="kw-2">&</span>AES_256_GCM, |
| <span class="kw">_ </span>=> <span class="macro">bail!</span>(<span class="string">"Invalid algorithm"</span>), |
| }; |
| |
| <span class="kw">let </span>result = decrypt_string_base64(<span class="kw-2">&</span>key, <span class="kw-2">&</span>nonce, <span class="kw-2">&</span>encrypted_data, alg)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(result) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>serde_json::json; |
| <span class="kw">use </span>teaclave_runtime::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_types::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>(test_online_decrypt) |
| } |
| |
| <span class="kw">fn </span>test_subroutine(args: FunctionArguments, result: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>input_files = StagedFiles::default(); |
| <span class="kw">let </span>output_files = StagedFiles::default(); |
| <span class="kw">let </span>runtime = Box::new(RawIoRuntime::new(input_files, output_files)); |
| <span class="kw">let </span>function = OnlineDecrypt; |
| <span class="kw">let </span>summary = function.run(args, runtime).unwrap(); |
| <span class="macro">assert_eq!</span>(summary, result); |
| } |
| |
| <span class="kw">fn </span>test_online_decrypt() { |
| <span class="kw">let </span>args1 = FunctionArguments::from_json(<span class="macro">json!</span>({ |
| <span class="string">"key"</span>: <span class="string">"aqUdgZ0lJnuz9yiPkoDxM6ZcTcVVpd4KKLqzbHD88Lg="</span>, |
| <span class="string">"nonce"</span>: <span class="string">"AAECAwQFBgcICQoL"</span>, |
| <span class="string">"encrypted_data"</span>: <span class="string">"CaZd8qSMMlBp8SjSXj2I4dQIuC9KkZ5DI/ATo1sWJw=="</span>, |
| <span class="string">"algorithm"</span>: <span class="string">"aes256gcm" |
| </span>})) |
| .unwrap(); |
| test_subroutine(args1, <span class="string">"Hello Teaclave!"</span>); |
| |
| <span class="kw">let </span>args2 = FunctionArguments::from_json(<span class="macro">json!</span>({ |
| <span class="string">"key"</span>: <span class="string">"aqUdgZ0lJnuz9yiPkoDxMw=="</span>, |
| <span class="string">"nonce"</span>: <span class="string">"AAECAwQFBgcICQoL"</span>, |
| <span class="string">"encrypted_data"</span>: <span class="string">"OqMscYqxk1CshHQZulTrrDlJjS/v6BE/clWJyTerUw=="</span>, |
| <span class="string">"algorithm"</span>: <span class="string">"aes128gcm" |
| </span>})) |
| .unwrap(); |
| test_subroutine(args2, <span class="string">"Hello Teaclave!"</span>); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="teaclave_function" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |