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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>core::mem; |
| <span class="kw">use </span>core::ptr; |
| <span class="kw">use </span>sgx_crypto_sys::<span class="kw-2">*</span>; |
| <span class="kw">use </span>sgx_types::error::{SgxResult, SgxStatus}; |
| <span class="kw">use </span>sgx_types::marker::ContiguousMemory; |
| <span class="kw">use </span>sgx_types::memeq::ConstTimeEq; |
| <span class="kw">use </span>sgx_types::types::{AlignKey128bit, AlignMac128bit, CMacHandle, Key128bit, Mac128bit}; |
| |
| <span class="kw">pub struct </span>AesCMac { |
| handle: CMacHandle, |
| key: AlignKey128bit, |
| } |
| |
| <span class="kw">impl </span>AesCMac { |
| <span class="kw">pub fn </span>new(key: <span class="kw-2">&</span>Key128bit) -> SgxResult<AesCMac> { |
| <span class="kw">let </span><span class="kw-2">mut </span>handle: CMacHandle = ptr::null_mut(); |
| <span class="kw">let </span>key = AlignKey128bit::from(key); |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ |
| sgx_cmac128_init(<span class="kw-2">&</span>key.key <span class="kw">as </span><span class="kw-2">*const </span>Key128bit, <span class="kw-2">&mut </span>handle <span class="kw">as </span><span class="kw-2">*mut </span>CMacHandle) |
| }; |
| |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| <span class="prelude-val">Ok</span>(AesCMac { handle, key }) |
| } |
| |
| <span class="kw">pub fn </span>update<T: <span class="question-mark">?</span>Sized>(<span class="kw-2">&mut </span><span class="self">self</span>, data: <span class="kw-2">&</span>T) -> SgxResult |
| <span class="kw">where |
| </span>T: ContiguousMemory, |
| { |
| <span class="kw">let </span>size = mem::size_of_val(data); |
| <span class="macro">ensure!</span>( |
| (size > <span class="number">0 </span>&& size < i32::MAX <span class="kw">as </span>usize), |
| SgxStatus::InvalidParameter |
| ); |
| |
| <span class="kw">let </span>status = |
| <span class="kw">unsafe </span>{ sgx_cmac128_update((data <span class="kw">as </span><span class="kw-2">*const </span>T).cast(), size <span class="kw">as </span>u32, <span class="self">self</span>.handle) }; |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">pub fn </span>finalize(<span class="self">self</span>) -> SgxResult<Mac128bit> { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">self</span>.finalize_into(<span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac.mac) |
| } |
| |
| <span class="kw">pub fn </span>finalize_align(<span class="self">self</span>) -> SgxResult<AlignMac128bit> { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">self</span>.finalize_into(<span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac) |
| } |
| |
| <span class="kw">pub fn </span>finalize_into(<span class="self">self</span>, mac: <span class="kw-2">&mut </span>Mac128bit) -> SgxResult { |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ sgx_cmac128_final(<span class="self">self</span>.handle, mac <span class="kw">as </span><span class="kw-2">*mut </span>Mac128bit) }; |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">pub fn </span>finalize_reset(<span class="kw-2">&mut </span><span class="self">self</span>) -> SgxResult<Mac128bit> { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">self</span>.finalize_into_reset(<span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac.mac) |
| } |
| |
| <span class="kw">pub fn </span>finalize_reset_align(<span class="kw-2">&mut </span><span class="self">self</span>) -> SgxResult<AlignMac128bit> { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">self</span>.finalize_into_reset(<span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac) |
| } |
| |
| <span class="kw">pub fn </span>finalize_into_reset(<span class="kw-2">&mut </span><span class="self">self</span>, mac: <span class="kw-2">&mut </span>Mac128bit) -> SgxResult { |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ sgx_cmac128_final(<span class="self">self</span>.handle, mac <span class="kw">as </span><span class="kw-2">*mut </span>Mac128bit) }; |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ sgx_cmac128_close(<span class="self">self</span>.handle) }; |
| <span class="macro">debug_assert!</span>(status.is_success()); |
| |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ |
| sgx_cmac128_init( |
| <span class="kw-2">&</span><span class="self">self</span>.key.key <span class="kw">as </span><span class="kw-2">*const </span>Key128bit, |
| <span class="kw-2">&mut </span><span class="self">self</span>.handle <span class="kw">as </span><span class="kw-2">*mut </span>CMacHandle, |
| ) |
| }; |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">pub fn </span>verify(<span class="self">self</span>, mac: <span class="kw-2">&</span>Mac128bit) -> SgxResult { |
| <span class="kw">let </span>mac_result = <span class="self">self</span>.finalize_align()<span class="question-mark">?</span>; |
| <span class="macro">ensure!</span>(<span class="kw-2">&</span>mac_result.mac.ct_eq(mac), SgxStatus::MacMismatch); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">pub fn </span>cmac<T: <span class="question-mark">?</span>Sized>(key: <span class="kw-2">&</span>Key128bit, data: <span class="kw-2">&</span>T) -> SgxResult<Mac128bit> |
| <span class="kw">where |
| </span>T: ContiguousMemory, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">Self</span>::cmac_into(key, data, <span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac.mac) |
| } |
| |
| <span class="kw">pub fn </span>cmac_align<T: <span class="question-mark">?</span>Sized>(key: <span class="kw-2">&</span>Key128bit, data: <span class="kw-2">&</span>T) -> SgxResult<AlignMac128bit> |
| <span class="kw">where |
| </span>T: ContiguousMemory, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>mac = AlignMac128bit::default(); |
| <span class="self">Self</span>::cmac_into(key, data, <span class="kw-2">&mut </span>mac.mac)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(mac) |
| } |
| |
| <span class="kw">fn </span>cmac_into<T: <span class="question-mark">?</span>Sized>(key: <span class="kw-2">&</span>Key128bit, data: <span class="kw-2">&</span>T, mac: <span class="kw-2">&mut </span>Mac128bit) -> SgxResult |
| <span class="kw">where |
| </span>T: ContiguousMemory, |
| { |
| <span class="kw">let </span>size = mem::size_of_val(data); |
| <span class="macro">ensure!</span>( |
| (size > <span class="number">0 </span>&& size < i32::MAX <span class="kw">as </span>usize), |
| SgxStatus::InvalidParameter |
| ); |
| |
| <span class="kw">let </span>status = <span class="kw">unsafe </span>{ |
| sgx_rijndael128_cmac_msg( |
| key <span class="kw">as </span><span class="kw-2">*const </span>Key128bit, |
| (data <span class="kw">as </span><span class="kw-2">*const </span>T).cast(), |
| size <span class="kw">as </span>u32, |
| mac <span class="kw">as </span><span class="kw-2">*mut </span>Mac128bit, |
| ) |
| }; |
| <span class="macro">ensure!</span>(status.is_success(), status); |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl </span>Drop <span class="kw">for </span>AesCMac { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">unsafe </span>{ sgx_cmac128_close(<span class="self">self</span>.handle) }; |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="sgx_crypto" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
