From 211192c482310f42849d7bfba7ce63f5ef6e5aa0 Mon Sep 17 00:00:00 2001 From: kim Date: Sat, 3 May 2025 16:45:25 +0000 Subject: [chore] more NoLLaMas proof-of-work tweaking (#4096) - replaces the sha256 calculation with an alternative implementation that seems to use more uniform time-taken across different platforms - goes back to the simpler difficulty calculation without a "partial" difficulty level Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4096 Co-authored-by: kim Co-committed-by: kim --- web/source/nollamasworker/sha256.js | 113 ++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 web/source/nollamasworker/sha256.js (limited to 'web/source/nollamasworker/sha256.js') diff --git a/web/source/nollamasworker/sha256.js b/web/source/nollamasworker/sha256.js new file mode 100644 index 000000000..553442d7c --- /dev/null +++ b/web/source/nollamasworker/sha256.js @@ -0,0 +1,113 @@ +/* + Copyright 2022 Andrea Griffini + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +*/ + +// sha256(data) returns the digest of an input piece of data. +// sha256(none) returns an object you can call .add(data), and .digest() at the end. +// the returned digest is a 32-byte Uint8Array instance with an added .hex() function. +// input should be string (that will be encoded as UTF-8) or an array-like with values 0..255. +// source: https://github.com/6502/sha256 +export default function sha256(data) { + let h0 = 0x6a09e667, h1 = 0xbb67ae85, h2 = 0x3c6ef372, h3 = 0xa54ff53a, + h4 = 0x510e527f, h5 = 0x9b05688c, h6 = 0x1f83d9ab, h7 = 0x5be0cd19, + tsz = 0, bp = 0; + const k = [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], + rrot = (x, n) => (x >>> n) | (x << (32-n)), + w = new Uint32Array(64), + buf = new Uint8Array(64), + process = () => { + for (let j=0,r=0; j<16; j++,r+=4) { + w[j] = (buf[r]<<24) | (buf[r+1]<<16) | (buf[r+2]<<8) | buf[r+3]; + } + for (let j=16; j<64; j++) { + let s0 = rrot(w[j-15], 7) ^ rrot(w[j-15], 18) ^ (w[j-15] >>> 3); + let s1 = rrot(w[j-2], 17) ^ rrot(w[j-2], 19) ^ (w[j-2] >>> 10); + w[j] = (w[j-16] + s0 + w[j-7] + s1) | 0; + } + let a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7; + for (let j=0; j<64; j++) { + let S1 = rrot(e, 6) ^ rrot(e, 11) ^ rrot(e, 25), + ch = (e & f) ^ ((~e) & g), + t1 = (h + S1 + ch + k[j] + w[j]) | 0, + S0 = rrot(a, 2) ^ rrot(a, 13) ^ rrot(a, 22), + maj = (a & b) ^ (a & c) ^ (b & c), + t2 = (S0 + maj) | 0; + h = g; g = f; f = e; e = (d + t1)|0; d = c; c = b; b = a; a = (t1 + t2)|0; + } + h0 = (h0 + a)|0; h1 = (h1 + b)|0; h2 = (h2 + c)|0; h3 = (h3 + d)|0; + h4 = (h4 + e)|0; h5 = (h5 + f)|0; h6 = (h6 + g)|0; h7 = (h7 + h)|0; + bp = 0; + }, + add = data => { + if (typeof data === "string") { + data = typeof TextEncoder === "undefined" ? Buffer.from(data) : (new TextEncoder).encode(data); + } + for (let i=0; i { + buf[bp++] = 0x80; if (bp == 64) {process();} + if (bp + 8 > 64) { + while (bp < 64) {buf[bp++] = 0x00;} + process(); + } + while (bp < 58) {buf[bp++] = 0x00;} + // Max number of bytes is 35,184,372,088,831 + let L = tsz * 8; + buf[bp++] = (L / 1099511627776.) & 255; + buf[bp++] = (L / 4294967296.) & 255; + buf[bp++] = L >>> 24; + buf[bp++] = (L >>> 16) & 255; + buf[bp++] = (L >>> 8) & 255; + buf[bp++] = L & 255; + process(); + let reply = new Uint8Array(32); + reply[ 0] = h0 >>> 24; reply[ 1] = (h0 >>> 16) & 255; reply[ 2] = (h0 >>> 8) & 255; reply[ 3] = h0 & 255; + reply[ 4] = h1 >>> 24; reply[ 5] = (h1 >>> 16) & 255; reply[ 6] = (h1 >>> 8) & 255; reply[ 7] = h1 & 255; + reply[ 8] = h2 >>> 24; reply[ 9] = (h2 >>> 16) & 255; reply[10] = (h2 >>> 8) & 255; reply[11] = h2 & 255; + reply[12] = h3 >>> 24; reply[13] = (h3 >>> 16) & 255; reply[14] = (h3 >>> 8) & 255; reply[15] = h3 & 255; + reply[16] = h4 >>> 24; reply[17] = (h4 >>> 16) & 255; reply[18] = (h4 >>> 8) & 255; reply[19] = h4 & 255; + reply[20] = h5 >>> 24; reply[21] = (h5 >>> 16) & 255; reply[22] = (h5 >>> 8) & 255; reply[23] = h5 & 255; + reply[24] = h6 >>> 24; reply[25] = (h6 >>> 16) & 255; reply[26] = (h6 >>> 8) & 255; reply[27] = h6 & 255; + reply[28] = h7 >>> 24; reply[29] = (h7 >>> 16) & 255; reply[30] = (h7 >>> 8) & 255; reply[31] = h7 & 255; + reply.hex = () => { + let res = ""; + reply.forEach(x => res += ("0" + x.toString(16)).slice(-2)); // eslint-disable-line no-return-assign + return res; + }; + return reply; + }; + if (data === undefined) {return {add, digest};} + add(data); + return digest(); +} -- cgit v1.2.3