b22a714840
The JIT that runs makepad apps from source: lexer, front end, type checker, lazy borrow checker (Gandalf; `--check-first` opts in), codegen, session and warm/cold caches keyed by compiler stamp, provided crates bound late, startup images, live patching. User-facing name is `makepad run` (binary `makepad`, MAKEPAD_RUN_* env, ~/.makepad-run); libs/relax stays the internal library name. `makepad check` reports rustc-style diagnostics with rustc error codes and checks a whole workspace (`--workspace`). Runs on macOS, Linux, Windows and Android. makepad-remote: one tool schema for apps and the WM (app/1): grabs, captures, traces, frame profiles and tweaks. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
260 lines
10 KiB
Rust
260 lines
10 KiB
Rust
// sha256 twice in one process (makepad score_pdf's one-shot form and core_util's streaming
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// form with its hardware self-check, software path): each copies a const IV into its state
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// and mutates it, so a const that a mutated local aliased made every hash after the first in
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// a process wrong (core_util hw::check's `let mut h = super::H0` broke every later
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// Sha256::new()). Known vectors (FIPS 180-4). rustc prints the same line.
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fn sha256_oneshot(data: &[u8]) -> [u8; 32] {
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const INITIAL: [u32; 8] = [
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0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
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0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
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];
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const K: [u32; 64] = [
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
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0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
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0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
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0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
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0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
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0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
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0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
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0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
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0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
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];
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let bit_len = (data.len() as u64).wrapping_mul(8);
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let total_len = (data.len() + 9).div_ceil(64) * 64;
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let mut padded = vec![0_u8; total_len];
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padded[..data.len()].copy_from_slice(data);
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padded[data.len()] = 0x80;
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padded[total_len - 8..].copy_from_slice(&bit_len.to_be_bytes());
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let mut state = INITIAL;
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for chunk in padded.chunks_exact(64) {
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let mut words = [0_u32; 64];
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for (index, word) in chunk.chunks_exact(4).enumerate() {
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words[index] = u32::from_be_bytes([word[0], word[1], word[2], word[3]]);
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}
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for index in 16..64 {
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let s0 = words[index - 15].rotate_right(7)
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^ words[index - 15].rotate_right(18)
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^ (words[index - 15] >> 3);
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let s1 = words[index - 2].rotate_right(17)
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^ words[index - 2].rotate_right(19)
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^ (words[index - 2] >> 10);
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words[index] = words[index - 16]
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.wrapping_add(s0)
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.wrapping_add(words[index - 7])
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.wrapping_add(s1);
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}
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let [mut a, mut b, mut c, mut d, mut e, mut f, mut g, mut h] = state;
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for index in 0..64 {
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let s1 = e.rotate_right(6) ^ e.rotate_right(11) ^ e.rotate_right(25);
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let choice = (e & f) ^ ((!e) & g);
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let first = h
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.wrapping_add(s1)
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.wrapping_add(choice)
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.wrapping_add(K[index])
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.wrapping_add(words[index]);
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let s0 = a.rotate_right(2) ^ a.rotate_right(13) ^ a.rotate_right(22);
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let majority = (a & b) ^ (a & c) ^ (b & c);
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let second = s0.wrapping_add(majority);
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h = g;
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g = f;
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f = e;
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e = d.wrapping_add(first);
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d = c;
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c = b;
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b = a;
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a = first.wrapping_add(second);
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}
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for (target, value) in state.iter_mut().zip([a, b, c, d, e, f, g, h]) {
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*target = target.wrapping_add(value);
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}
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}
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let mut output = [0_u8; 32];
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for (chunk, value) in output.chunks_exact_mut(4).zip(state) {
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chunk.copy_from_slice(&value.to_be_bytes());
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}
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output
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}
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fn hex(bytes: &[u8]) -> String {
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const DIGITS: &[u8; 16] = b"0123456789abcdef";
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let mut output = String::with_capacity(bytes.len() * 2);
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for byte in bytes {
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output.push(DIGITS[(byte >> 4) as usize] as char);
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output.push(DIGITS[(byte & 15) as usize] as char);
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}
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output
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}
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const K: [u32; 64] = [
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
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];
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const H0: [u32; 8] = [
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0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
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];
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#[derive(Clone)]
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struct Sha256 {
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h: [u32; 8],
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block: [u8; 64],
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block_len: usize,
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total_len: u64,
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}
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impl Sha256 {
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fn new() -> Self {
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Self { h: H0, block: [0; 64], block_len: 0, total_len: 0 }
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}
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fn update(&mut self, mut data: &[u8]) {
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self.total_len = self.total_len.wrapping_add(data.len() as u64);
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if self.block_len > 0 {
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let take = (64 - self.block_len).min(data.len());
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self.block[self.block_len..self.block_len + take].copy_from_slice(&data[..take]);
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self.block_len += take;
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data = &data[take..];
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if self.block_len == 64 {
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let block = self.block;
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self.compress(&block);
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self.block_len = 0;
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}
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if data.is_empty() {
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// A still-partial buffered block must survive; the remainder
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// write below would zero block_len and drop it.
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return;
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}
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}
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let mut chunks = data.chunks_exact(64);
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for chunk in &mut chunks {
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let mut block = [0u8; 64];
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block.copy_from_slice(chunk);
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self.compress(&block);
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}
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let rest = chunks.remainder();
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self.block[..rest.len()].copy_from_slice(rest);
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self.block_len = rest.len();
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}
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fn finalize(mut self) -> [u8; 32] {
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let bit_len = self.total_len.wrapping_mul(8);
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let mut tail = [0u8; 128];
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tail[..self.block_len].copy_from_slice(&self.block[..self.block_len]);
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tail[self.block_len] = 0x80;
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// One padded block if the length fits, otherwise two.
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let tail_len = if self.block_len < 56 { 64 } else { 128 };
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tail[tail_len - 8..tail_len].copy_from_slice(&bit_len.to_be_bytes());
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let mut block = [0u8; 64];
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block.copy_from_slice(&tail[..64]);
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self.compress(&block);
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if tail_len == 128 {
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block.copy_from_slice(&tail[64..]);
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self.compress(&block);
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}
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let mut out = [0u8; 32];
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for (i, v) in self.h.iter().enumerate() {
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out[i * 4..i * 4 + 4].copy_from_slice(&v.to_be_bytes());
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}
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out
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}
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fn compress(&mut self, chunk: &[u8; 64]) {
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Self::compress_sw(&mut self.h, chunk);
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}
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fn compress_sw(h: &mut [u32; 8], chunk: &[u8; 64]) {
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let mut w = [0u32; 64];
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for (i, word) in chunk.chunks_exact(4).enumerate() {
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w[i] = u32::from_be_bytes([word[0], word[1], word[2], word[3]]);
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}
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for i in 16..64 {
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let s0 = w[i - 15].rotate_right(7) ^ w[i - 15].rotate_right(18) ^ (w[i - 15] >> 3);
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let s1 = w[i - 2].rotate_right(17) ^ w[i - 2].rotate_right(19) ^ (w[i - 2] >> 10);
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w[i] = w[i - 16]
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.wrapping_add(s0)
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.wrapping_add(w[i - 7])
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.wrapping_add(s1);
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}
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let (mut a, mut b, mut c, mut d) = (h[0], h[1], h[2], h[3]);
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let (mut e, mut f, mut g, mut hh) = (h[4], h[5], h[6], h[7]);
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for i in 0..64 {
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let s1 = e.rotate_right(6) ^ e.rotate_right(11) ^ e.rotate_right(25);
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let ch = (e & f) ^ ((!e) & g);
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let t1 = hh
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.wrapping_add(s1)
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.wrapping_add(ch)
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.wrapping_add(K[i])
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.wrapping_add(w[i]);
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let s0 = a.rotate_right(2) ^ a.rotate_right(13) ^ a.rotate_right(22);
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let maj = (a & b) ^ (a & c) ^ (b & c);
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let t2 = s0.wrapping_add(maj);
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hh = g;
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g = f;
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f = e;
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e = d.wrapping_add(t1);
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d = c;
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c = b;
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b = a;
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a = t1.wrapping_add(t2);
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}
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h[0] = h[0].wrapping_add(a);
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h[1] = h[1].wrapping_add(b);
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h[2] = h[2].wrapping_add(c);
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h[3] = h[3].wrapping_add(d);
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h[4] = h[4].wrapping_add(e);
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h[5] = h[5].wrapping_add(f);
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h[6] = h[6].wrapping_add(g);
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h[7] = h[7].wrapping_add(hh);
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}
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}
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// core_util's hardware self-check, run once before the first hash (sha256.rs hw::check):
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// the IV copied through a module path, then written through `&mut`
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mod hw {
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const ABC_BLOCK: [u8; 64] = {
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let mut b = [0u8; 64];
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b[0] = b'a';
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b[1] = b'b';
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b[2] = b'c';
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b[3] = 0x80;
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b[63] = 24;
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b
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};
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const ABC_DIGEST: [u32; 8] = [
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0xba7816bf, 0x8f01cfea, 0x414140de, 0x5dae2223, 0xb00361a3, 0x96177a9c, 0xb410ff61, 0xf20015ad,
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];
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pub fn check() -> bool {
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let mut h = super::H0;
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super::Sha256::compress_sw(&mut h, &ABC_BLOCK);
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h == ABC_DIGEST
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}
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}
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fn streaming(data: &[u8]) -> [u8; 32] {
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let mut s = Sha256::new();
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s.update(data);
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s.finalize()
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}
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#[test]
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fn sha256_twice() {
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let abc = "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad";
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let two = "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1";
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let msg2 = b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
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assert!(hw::check());
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assert!(hw::check());
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for _ in 0..2 {
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assert_eq!(hex(&sha256_oneshot(b"abc")), abc);
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assert_eq!(hex(&sha256_oneshot(msg2)), two);
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assert_eq!(hex(&streaming(b"abc")), abc);
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assert_eq!(hex(&streaming(msg2)), two);
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}
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println!("{} {}", hex(&sha256_oneshot(b"abc")), hex(&streaming(msg2)));
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}
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