| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/arithmetical.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>arithmetical.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">☰</div><a href='../../optee_utee/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../wheel.svg"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="comment">// or more contributor license agreements. See the NOTICE file</span> |
| <span class="comment">// distributed with this work for additional information</span> |
| <span class="comment">// regarding copyright ownership. The ASF licenses this file</span> |
| <span class="comment">// to you under the Apache License, Version 2.0 (the</span> |
| <span class="comment">// "License"); you may not use this file except in compliance</span> |
| <span class="comment">// with the License. You may obtain a copy of the License at</span> |
| <span class="comment">//</span> |
| <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="comment">//</span> |
| <span class="comment">// Unless required by applicable law or agreed to in writing,</span> |
| <span class="comment">// software distributed under the License is distributed on an</span> |
| <span class="comment">// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="comment">// KIND, either express or implied. See the License for the</span> |
| <span class="comment">// specific language governing permissions and limitations</span> |
| <span class="comment">// under the License.</span> |
| |
| <span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">Error</span>, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use</span> <span class="ident">optee_utee_sys</span> <span class="kw">as</span> <span class="ident">raw</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::{<span class="ident">cmp::max</span>, <span class="ident">fmt</span>}; |
| |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">BigIntUnit</span> <span class="op">=</span> <span class="ident">u32</span>; |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">BigIntFMMUnit</span> <span class="op">=</span> <span class="ident">u32</span>; |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">BigIntFMMContextUnit</span> <span class="op">=</span> <span class="ident">u32</span>; |
| |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BigInt</span>(<span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntUnit</span><span class="op">></span>); |
| |
| <span class="kw">impl</span> <span class="ident">BigInt</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">data_ptr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">u32</span> { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ptr</span>() |
| } |
| |
| <span class="comment">// size represents BigInt bits</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">size_in_u32</span>(<span class="ident">size</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="ident">u32</span> { |
| <span class="kw">return</span> ((<span class="ident">size</span> <span class="op">+</span> <span class="number">31</span>) <span class="op">/</span> <span class="number">32</span>) <span class="op">+</span> <span class="number">2</span>; |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">bits</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="ident">size</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::size_in_u32</span>(<span class="ident">bits</span>) <span class="kw">as</span> <span class="ident">usize</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tmp_vec</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntUnit</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec!</span>[<span class="number">0</span>; <span class="ident">size</span>]; |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntInit</span>(<span class="ident">tmp_vec</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">size</span> <span class="kw">as</span> <span class="ident">usize</span>) }; |
| <span class="self">Self</span>(<span class="ident">tmp_vec</span>) |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_from_octet_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buffer</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>], <span class="ident">sign</span>: <span class="ident">i32</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { |
| <span class="kw">match</span> <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntConvertFromOctetString</span>( |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">buffer</span>.<span class="ident">as_ptr</span>(), |
| <span class="ident">buffer</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">usize</span>, |
| <span class="ident">sign</span>, |
| ) |
| } { |
| <span class="ident">raw::TEE_SUCCESS</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(()), |
| <span class="ident">code</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">Error::from_raw_error</span>(<span class="ident">code</span>)), |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_to_octet_string</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer_size</span>: <span class="ident">usize</span> <span class="op">=</span> (<span class="self">self</span>.<span class="number">0</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="number">2</span>) <span class="op">*</span> <span class="number">4</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tmp_vec</span> <span class="op">=</span> <span class="macro">vec!</span>[<span class="number">0u8</span>; <span class="ident">buffer_size</span>]; |
| <span class="kw">match</span> <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntConvertToOctetString</span>( |
| <span class="ident">tmp_vec</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buffer_size</span>, |
| <span class="self">self</span>.<span class="ident">data_ptr</span>(), |
| ) |
| } { |
| <span class="ident">raw::TEE_SUCCESS</span> <span class="op">=</span><span class="op">></span> { |
| <span class="ident">tmp_vec</span>.<span class="ident">truncate</span>(<span class="ident">buffer_size</span>); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">tmp_vec</span>); |
| } |
| <span class="ident">code</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">Error::from_raw_error</span>(<span class="ident">code</span>)), |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_from_s32</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">short_val</span>: <span class="ident">i32</span>) { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntConvertFromS32</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">short_val</span>) }; |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_to_s32</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">short_val</span>: <span class="ident">i32</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">match</span> <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntConvertToS32</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">short_val</span> <span class="kw">as</span> <span class="kw">_</span>, <span class="self">self</span>.<span class="ident">data_ptr</span>()) } { |
| <span class="ident">raw::TEE_SUCCESS</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">short_val</span>), |
| <span class="ident">code</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">Error::from_raw_error</span>(<span class="ident">code</span>)), |
| } |
| } |
| |
| <span class="comment">/* return negative number if self < target, |
| 0 if self == target |
| positive number if self > target*/</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">compare_big_int</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">target</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">i32</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntCmp</span>(<span class="self">self</span>.<span class="ident">data_ptr</span>(), <span class="ident">target</span>.<span class="ident">data_ptr</span>()) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">compare_s32</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">target</span>: <span class="ident">i32</span>) <span class="op">-</span><span class="op">></span> <span class="ident">i32</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntCmpS32</span>(<span class="self">self</span>.<span class="ident">data_ptr</span>(), <span class="ident">target</span>) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">shift_right</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">bits</span>: <span class="ident">usize</span>) { |
| <span class="comment">// Should return a BigInt, while its size is based on the abs function which is missed</span> |
| <span class="comment">// right now</span> |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntShiftRight</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>(), <span class="ident">bits</span>) }; |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_bit</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">bit_index</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntGetBit</span>(<span class="self">self</span>.<span class="ident">data_ptr</span>(), <span class="ident">bit_index</span>) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_bit_count</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">u32</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntGetBitCount</span>(<span class="self">self</span>.<span class="ident">data_ptr</span>()) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="ident">bits</span> <span class="op">=</span> <span class="ident">max</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op1</span>), <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op2</span>)) <span class="op">+</span> <span class="number">1</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">bits</span>); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntAdd</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), <span class="ident">op2</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">sub</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="ident">bits</span> <span class="op">=</span> <span class="ident">max</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op1</span>), <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op2</span>)) <span class="op">+</span> <span class="number">1</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">bits</span>); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntSub</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), <span class="ident">op2</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">neg</span>(<span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op</span>)); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntNeg</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">multiply</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="ident">bits</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op1</span>) <span class="op">+</span> <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op2</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">bits</span>); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntMul</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), <span class="ident">op2</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">square</span>(<span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="number">2</span> <span class="op">*</span> <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op</span>)); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntSquare</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="comment">// document defines wrong size for result quotient</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">divide</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> (<span class="self">Self</span>, <span class="self">Self</span>) { |
| <span class="kw">let</span> <span class="ident">q_bits</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">op1</span>.<span class="ident">compare_big_int</span>(<span class="ident">op2</span>) { |
| <span class="ident">d</span> <span class="kw">if</span> <span class="ident">d</span> <span class="op">></span><span class="op">=</span> <span class="number">0</span> <span class="op">=</span><span class="op">></span> <span class="ident">max</span>(<span class="number">1</span>, <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op1</span>) <span class="op">-</span> <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op2</span>)), |
| <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="number">0</span>, |
| }; |
| <span class="kw">let</span> <span class="ident">r_bits</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">op2</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">quotient</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">q_bits</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">remainder</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">r_bits</span>); |
| |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntDiv</span>( |
| <span class="ident">quotient</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">remainder</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">op2</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| (<span class="ident">quotient</span>, <span class="ident">remainder</span>) |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">module</span>(<span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntMod</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>(), <span class="ident">n</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_mod</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntAddMod</span>( |
| <span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">op2</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">sub_mod</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntSubMod</span>( |
| <span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">op2</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">mul_mod</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntMulMod</span>( |
| <span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">op2</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">square_mod</span>(<span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntSquareMod</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>(), <span class="ident">n</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">inv_mod</span>(<span class="ident">op</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident"><span class="self">Self</span>::get_bit_count</span>(<span class="ident">n</span>)); |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntInvMod</span>(<span class="ident">res</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">op</span>.<span class="ident">data_ptr</span>(), <span class="ident">n</span>.<span class="ident">data_ptr</span>()) }; |
| <span class="ident">res</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">relative_prime</span>(<span class="ident">op1</span>: <span class="kw-2">&</span><span class="self">Self</span>, <span class="ident">op2</span>: <span class="kw-2">&</span><span class="self">Self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntRelativePrime</span>(<span class="ident">op1</span>.<span class="ident">data_ptr</span>(), <span class="ident">op2</span>.<span class="ident">data_ptr</span>()) } |
| } |
| |
| <span class="comment">/* pub fn compute_extended_gcd(op1: &Self, op2: &Self) -> (Self, Self, Self) |
| * This function is implemented in OP-TEE, while the output size needs to be calculated based |
| * on the missing function TEE_BigIntAbs, so we do not port it yet.*/</span> |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_probable_prime</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">confidence_level</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="ident">i32</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntIsProbablePrime</span>(<span class="self">self</span>.<span class="ident">data_ptr</span>(), <span class="ident">confidence_level</span>) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_from_big_int_fmm</span>( |
| <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, |
| <span class="ident">src</span>: <span class="kw-2">&</span><span class="ident">BigIntFMM</span>, |
| <span class="ident">n</span>: <span class="kw-2">&</span><span class="ident">BigInt</span>, |
| <span class="ident">context</span>: <span class="ident">BigIntFMMContext</span>, |
| ) { |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntConvertToFMM</span>( |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">src</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">context</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">BigInt</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> { |
| <span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"{:x?}"</span>, <span class="self">self</span>.<span class="number">0</span>) |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BigIntFMMContext</span>(<span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntFMMContextUnit</span><span class="op">></span>); |
| |
| <span class="kw">impl</span> <span class="ident">BigIntFMMContext</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">data_ptr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">u32</span> { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ptr</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">size_in_u32</span>(<span class="ident">size</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="ident">usize</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntFMMContextSizeInU32</span>(<span class="ident">size</span>) } |
| } |
| |
| <span class="comment">// Globalplatform define FMMContext1 here while OP-TEE does not update yet</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">bits</span>: <span class="ident">u32</span>, <span class="ident">modulus</span>: <span class="ident">BigInt</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">size</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::size_in_u32</span>(<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">usize</span>) <span class="kw">as</span> <span class="ident">usize</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tmp_vec</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntFMMContextUnit</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec!</span>[<span class="number">0</span>; <span class="ident">size</span>]; |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntInitFMMContext</span>(<span class="ident">tmp_vec</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">size</span>, <span class="ident">modulus</span>.<span class="ident">data_ptr</span>()) |
| }; |
| <span class="prelude-val">Ok</span>(<span class="self">Self</span>(<span class="ident">tmp_vec</span>)) |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BigIntFMM</span>(<span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntFMMUnit</span><span class="op">></span>); |
| |
| <span class="kw">impl</span> <span class="ident">BigIntFMM</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">data_ptr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">u32</span> { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ptr</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">size_in_u32</span>(<span class="ident">size</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="ident">usize</span> { |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntFMMSizeInU32</span>(<span class="ident">size</span>) } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">bits</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { |
| <span class="kw">let</span> <span class="ident">size</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="ident"><span class="self">Self</span>::size_in_u32</span>(<span class="ident">bits</span> <span class="kw">as</span> <span class="ident">usize</span>) <span class="kw">as</span> <span class="ident">usize</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tmp_vec</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">BigIntFMMUnit</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec!</span>[<span class="number">0</span>; <span class="ident">size</span>]; |
| <span class="kw">unsafe</span> { <span class="ident">raw::TEE_BigIntInitFMM</span>(<span class="ident">tmp_vec</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">size</span>) }; |
| <span class="self">Self</span>(<span class="ident">tmp_vec</span>) |
| } |
| |
| <span class="comment">//Has to be initialized first</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">convert_from_big_int</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">src</span>: <span class="kw-2">&</span><span class="ident">BigInt</span>, <span class="ident">n</span>: <span class="kw-2">&</span><span class="ident">BigInt</span>, <span class="ident">context</span>: <span class="ident">BigIntFMMContext</span>) { |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntConvertToFMM</span>( |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">src</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">context</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| } |
| |
| <span class="comment">//Has to be initialized first</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">compute_fmm</span>( |
| <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, |
| <span class="ident">op1</span>: <span class="kw-2">&</span><span class="ident">BigIntFMM</span>, |
| <span class="ident">op2</span>: <span class="kw-2">&</span><span class="ident">BigIntFMM</span>, |
| <span class="ident">n</span>: <span class="kw-2">&</span><span class="ident">BigInt</span>, |
| <span class="ident">context</span>: <span class="ident">BigIntFMMContext</span>, |
| ) { |
| <span class="kw">unsafe</span> { |
| <span class="ident">raw::TEE_BigIntComputeFMM</span>( |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), |
| <span class="ident">op1</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">op2</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">n</span>.<span class="ident">data_ptr</span>(), |
| <span class="ident">context</span>.<span class="ident">data_ptr</span>(), |
| ) |
| }; |
| } |
| } |
| <span class="comment">//OP-TEE in version GP 1.1.1 does not implement function:</span> |
| <span class="comment">//TEE_BigIntSetBit</span> |
| <span class="comment">//TEE_BigIntAssign</span> |
| <span class="comment">//TEE_BigIntAbs</span> |
| <span class="comment">//TEE_BigIntExpMod</span> |
| </code></pre></div> |
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