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Diffstat (limited to 'data/extensions/jsr@javascriptrestrictor/wrappingS-TEMPORAL.js')
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1 files changed, 0 insertions, 89 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/wrappingS-TEMPORAL.js b/data/extensions/jsr@javascriptrestrictor/wrappingS-TEMPORAL.js deleted file mode 100644 index 0a68cc9..0000000 --- a/data/extensions/jsr@javascriptrestrictor/wrappingS-TEMPORAL.js +++ /dev/null @@ -1,89 +0,0 @@ -/** \file - * \brief Wrappers for High Resolution Time (Level 2) standard - * - * \see https://w3c.github.io/hr-time/ - * - * \author Copyright (C) 2025 Libor Polcak - * - * \license SPDX-License-Identifier: GPL-3.0-or-later - */ -// -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program. If not, see <https://www.gnu.org/licenses/>. -// - - -/** \file - * \ingroup wrappers - * - * This wrapper aims on prevention of microarchitectural attacks, clock-skew attacks, and other time - * related attacks. The goal is to limit the precision of the time returned by the Temporal API. - * - * \see https://www.fit.vut.cz/study/thesis/22308/?year=0&sup=Pol%C4%8D%C3%A1k, especially Sect. - * 7.2. - * - * \see Tom Van Goethem, Wouter Joosen, Nick Nikiforakis. The Clock is Still Ticking: -Timing Attacks in the Modern Web. CCS'15. DOI: http://dx.doi.org/10.1145/2810103.2813632. -https://lirias.kuleuven.be/retrieve/389086 - * - * \see Schwarz, M., Lipp, M. a Gruss, D. JavaScript Zero: Real JavaScript and Zero - * Side-Channel Attacks. NDSS'18. - * - * \see Schwarz M., Maurice C., Gruss D., Mangard S. (2017) Fantastic Timers and Where to Find Them: High-Resolution Microarchitectural Attacks in JavaScript. In: Kiayias A. (eds) Financial Cryptography and Data Security. FC 2017. Lecture Notes in Computer Science, vol 10322. Springer, Cham. https://doi.org/10.1007/978-3-319-70972-7_13 - * - * The wrappers support the following behaviour: - * - * * Round timestamp: Limit the precision by removing (a part of) the decimal part of the timestamp. - * * Randomize after rounding: Create a fake decimal part to confuse attackers and to create - * timestamps that look similar to expected timestamps. - */ - - - -/* - * Create private namespace - */ -(function() { - var wrappers = [ - { - parent_object: "Temporal.Now", - parent_object_property: "instant", - wrapped_objects: [ - { - original_name: "Temporal.Now.instant", - wrapped_name: "originalTemporalNowInstant", - }, - ], - helping_code: rounding_function + noise_function + - ` - var precision = args[0]; - var doNoise = args[1]; - var func = rounding_function; - if (doNoise) { - func = noise_function; - } - `, - wrapping_function_args: "", - wrapping_function_body: ` - var original = originalTemporalNowInstant(); - var originalEpochMilliseconds = original.epochMilliseconds; - var changedValue = func(originalEpochMilliseconds, precision); - var fakeInstant = new Temporal.Instant(BigInt(changedValue) * 1000000n); // Note that we cannot return this value as it may contain different zone and other metadata to the original - var durationUntil = original.until(fakeInstant); - var result = original.add(durationUntil); - return result; - `, - }, - ] - add_wrappers(wrappers); -})() |