/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
/** * Generate cryptographically secure random bytes using the best facilities * available on the current OS. * * Return value: true if random bytes were copied into `aBuffer` or false on * error. * * Useful whenever a secure random number is needed and NSS isn't available. * (Perhaps because it hasn't been initialized yet) * * Current mechanisms: * Windows: RtlGenRandom() * Android, Darwin, DragonFly, FreeBSD, OpenBSD, NetBSD: arc4random() * Linux: getrandom() if available, "/dev/urandom" otherwise * Other Unix: "/dev/urandom" *
*/
[[nodiscard]] MFBT_API bool GenerateRandomBytesFromOS(void* aBuffer,
size_t aLength);
/** * Generate a cryptographically secure random 64-bit unsigned number using the * best facilities available on the current OS.
*/
MFBT_API Maybe<uint64_t> RandomUint64();
/** * Like RandomUint64, but always returns a uint64_t or crashes with an assert * if the underlying RandomUint64 call failed.
*/
MFBT_API uint64_t RandomUint64OrDie();
} // namespace mozilla
#endif// mozilla_RandomNum_h_
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