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#![feature(stdsimd)] // Based on the following C intrinsics implementation: // <https://github.com/noloader/SHA-Intrinsics/blob/master/sha256-arm.c> // // Original C written and placed in public domain by Jeffrey Walton. // Based on code from ARM, and by Johannes Schneiders, Skip Hovsmith and // Barry O'Rourke for the mbedTLS project. use std::arch::aarch64::*; const K: [u32; 64] = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2, ]; pub unsafe fn compress(state: &mut [u32; 8], blocks: &[[u8; 64]]) { // Load state let mut state0 = vld1q_u32(&state[0]); let mut state1 = vld1q_u32(&state[4]); for block in blocks { // Save state let abef_save = state0; let cdgh_save = state1; // Load message let mut msg = [ vld1q_u32(block[..16].as_ptr() as *const u32), vld1q_u32(block[16..32].as_ptr() as *const u32), vld1q_u32(block[32..48].as_ptr() as *const u32), vld1q_u32(block[48..].as_ptr() as *const u32), ]; // Reverse for little endian for i in 0..4 { // TODO(tarcieri): figure out why `vreinterpretq_u8_u32` is missing on aarch64 // msg[i] = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(msg[i]))); let m = unsafe { *(&msg[i] as *const uint32x4_t as *const uint8x16_t) }; msg[i] = vreinterpretq_u32_u8(vrev32q_u8(m)); } let mut tmp0 = vaddq_u32(msg[0], vld1q_u32(&K[0x00])); let mut tmp1: uint32x4_t; let mut tmp2: uint32x4_t; // Rounds 0-3 msg[0] = vsha256su0q_u32(msg[0], msg[1]); tmp2 = state0; tmp1 = vaddq_u32(msg[1], vld1q_u32(&K[0x04])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[0] = vsha256su1q_u32(msg[0], msg[2], msg[3]); // Rounds 4-7 msg[1] = vsha256su0q_u32(msg[1], msg[2]); tmp2 = state0; tmp0 = vaddq_u32(msg[2], vld1q_u32(&K[0x08])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[1] = vsha256su1q_u32(msg[1], msg[3], msg[0]); // Rounds 8-11 msg[2] = vsha256su0q_u32(msg[2], msg[3]); tmp2 = state0; tmp1 = vaddq_u32(msg[3], vld1q_u32(&K[0x0c])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[2] = vsha256su1q_u32(msg[2], msg[0], msg[1]); // Rounds 12-15 msg[3] = vsha256su0q_u32(msg[3], msg[0]); tmp2 = state0; tmp0 = vaddq_u32(msg[0], vld1q_u32(&K[0x10])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[3] = vsha256su1q_u32(msg[3], msg[1], msg[2]); // Rounds 16-19 msg[0] = vsha256su0q_u32(msg[0], msg[1]); tmp2 = state0; tmp1 = vaddq_u32(msg[1], vld1q_u32(&K[0x14])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[0] = vsha256su1q_u32(msg[0], msg[2], msg[3]); // Rounds 20-23 msg[1] = vsha256su0q_u32(msg[1], msg[2]); tmp2 = state0; tmp0 = vaddq_u32(msg[2], vld1q_u32(&K[0x18])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[1] = vsha256su1q_u32(msg[1], msg[3], msg[0]); // Rounds 24-27 msg[2] = vsha256su0q_u32(msg[2], msg[3]); tmp2 = state0; tmp1 = vaddq_u32(msg[3], vld1q_u32(&K[0x1c])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[2] = vsha256su1q_u32(msg[2], msg[0], msg[1]); // Rounds 28-31 msg[3] = vsha256su0q_u32(msg[3], msg[0]); tmp2 = state0; tmp0 = vaddq_u32(msg[0], vld1q_u32(&K[0x20])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[3] = vsha256su1q_u32(msg[3], msg[1], msg[2]); // Rounds 32-35 msg[0] = vsha256su0q_u32(msg[0], msg[1]); tmp2 = state0; tmp1 = vaddq_u32(msg[1], vld1q_u32(&K[0x24])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[0] = vsha256su1q_u32(msg[0], msg[2], msg[3]); // Rounds 36-39 msg[1] = vsha256su0q_u32(msg[1], msg[2]); tmp2 = state0; tmp0 = vaddq_u32(msg[2], vld1q_u32(&K[0x28])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[1] = vsha256su1q_u32(msg[1], msg[3], msg[0]); // Rounds 40-43 msg[2] = vsha256su0q_u32(msg[2], msg[3]); tmp2 = state0; tmp1 = vaddq_u32(msg[3], vld1q_u32(&K[0x2c])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); msg[2] = vsha256su1q_u32(msg[2], msg[0], msg[1]); // Rounds 44-47 msg[3] = vsha256su0q_u32(msg[3], msg[0]); tmp2 = state0; tmp0 = vaddq_u32(msg[0], vld1q_u32(&K[0x30])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); msg[3] = vsha256su1q_u32(msg[3], msg[1], msg[2]); // Rounds 48-51 tmp2 = state0; tmp1 = vaddq_u32(msg[1], vld1q_u32(&K[0x34])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); // Rounds 52-55 tmp2 = state0; tmp0 = vaddq_u32(msg[2], vld1q_u32(&K[0x38])); state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); // Rounds 56-59 tmp2 = state0; tmp1 = vaddq_u32(msg[3], vld1q_u32(&K[0x3c])); state0 = vsha256hq_u32(state0, state1, tmp0); state1 = vsha256h2q_u32(state1, tmp2, tmp0); // Rounds 60-63 tmp2 = state0; state0 = vsha256hq_u32(state0, state1, tmp1); state1 = vsha256h2q_u32(state1, tmp2, tmp1); // Combine state state0 = vaddq_u32(state0, abef_save); state1 = vaddq_u32(state1, cdgh_save); } *(state[..4].as_mut_ptr() as *mut uint32x4_t) = state0; *(state[4..].as_mut_ptr() as *mut uint32x4_t) = state1; // Save state //vst1q_u32(&state[0], state0); //vst1q_u32(&state[4], state1); }
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