236 lines
130 KiB
Plaintext
236 lines
130 KiB
Plaintext
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!<arch>
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/ 0 0 0 0 4118 `
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getrandom-2e3e840c4769c28a.getrandom.5e76a6f7725e7a95-cgu.0.rcgu.o/
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lib.rmeta/ 0 0 0 644 67192 `
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ELF · ø @ @ GNU À rust
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m #rustc 1.96.0 (ac68faa20 2026-05-25)ÁíàÄTËŸ ÜJîÄ)'ß\¥! -3d1337db07d0b3aeÁ cfg_ifÁa“
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n@gä~&[µT1k -19b6a7ba2a83a898Á ¤°ð ¾ä-±($²ï=©Ã -7e98a21bfd32b0edÁÀ뉊 ]!ÜÛê(¹Þ—šên -5be7b69c3ff7b5b8Á ¤²XctÔ'ÐÓ©z¨É½Ó -a4945860e1c53b00Á –�òÖÀH•‘P IÓHã#£ -055f30b747f859b6Á rustc_std_workspace_coreÁCçß^ò½èÝ$Çÿ+Cé -c4878ee60b2242c9Á ŸÃï+Ñ]ŠqB<ÏïW# -8dd1dd90e70d0b6aÁ miniz_oxideÁ€š»J(P>àö÷g\K -1eb618da2918ab7fÁ adler2ÁÆ;+Þ®5¥ÌýÝ°¦ÛLˆ -f7919172d268e069Á hashbrownÁPäV9ÒÆèÜ�"ÊÖVŽ\ -0fc2184a5da6723aÁ rustc_std_workspace_allocÁs&ØòØy¯s•bæ!‰ýŠ -97e4bf30be240674Á
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std_detectÁhŠBîÙºÌI®Ë�Å�š -9dbbf8346ba7ac8bÁ rustc_demangleÁûë9´Ç×@Œ�’ùXFº -f33013f239bf9f14Á_ÜLh�ž§Œaã¯>� -0a71c8f33a838301Á addr2lineÁ׎Þ!]8V$É@@T· -e618e6be60e87ba2Á gimliÁ¸
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°µ~Î1‹Ñt ðÁ€w -1f7768a68858f670Á objectÁ
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‹ás «LÖ€îâƒ×ɯŒ -ee6f3747e38367f0Á–Ÿ˜6v*°a,7Fú‚�# -4d84f71ef282d676Á testsÁ,Ã= ‚ $¸= customÁ4�b»®”ôa í _ errorÁ internal_errorÁ
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UNSUPPORTEDÁ
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ERRNO_NOT_POSITIVEÁ
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UNEXPECTEDÁ
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IOS_SEC_RANDOMÁ
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WINDOWS_RTL_GEN_RANDOMÁ
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FAILED_RDRANDÁ
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NO_RDRANDÁ
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VXWORKS_RAND_SECUREÁ
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NODE_CRYPTOÁ
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NODE_RANDOM_FILL_SYNCÁ
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NODE_ES_MODULEÁ
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œò_ 1 × ¬‡` , ™7\®` ÑÛ °,Õb = :ü Ëž ü @ = Interface to the operating system's random number generator.Á Aú ¼E # Supported targetsÁ ]ú üa= : | Target | Target Triple | ImplementationÁ üŸ= : | ----------------- | ------------------ | --------------Á üݤ ¡ | Linux, Android | `*‑linux‑*` | [`getrandom`][1] system call if available, otherwise [`/dev/urandom`][2] after successfully polling `/dev/random`Á ü‚F C | Windows | `*‑windows‑*` | [`BCryptGenRandom`]Á üÉD A | macOS | `*‑apple‑darwin` | [`getentropy`][3]Á üŽk h | iOS, tvOS, watchOS | `*‑apple‑ios`, `*-apple-tvos`, `*-apple-watchos` | [`CCRandomGenerateBytes`]Á üúA > | FreeBSD | `*‑freebsd` | [`getrandom`][5]Á ü¼B ? | OpenBSD | `*‑openbsd` | [`getentropy`][7]Á üÿn k | NetBSD | `*‑netbsd` | [`getrandom`][16] if available, otherwise [`kern.arandom`][8]Á üîB ? | Dragonfly BSD | `*‑dragonfly` | [`getrandom`][9]Á ü±W T | Solaris | `*‑solaris` | [`getrandom`][11] (with `GRND_RANDOM`)Á ü‰B ? | illumos | `*‑illumos` | [`getrandom`][12]Á üÌ@ = | Fuchsia OS | `*‑fuchsia` | [`cprng_draw`]Á ü� ? < | Redox | `*‑redox` | `/dev/urandom`Á üÍ \ Y | Haiku | `*‑haiku` | `/dev/urandom` (identical to `/dev/random`)Á üª
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C @ | Hermit | `*-hermit` | [`sys_read_entropy`]Á üî
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@ = | Hurd | `*-hurd-*` | [`getrandom`][17]Á ü¯ = : | SGX | `x86_64‑*‑sgx` | [`RDRAND`]Á üí ~ { | VxWorks | `*‑wrs‑vxworks‑*` | `randABytes` after checking entropy pool initialization with `randSecure`Á üì D A | ESP-IDF | `*‑espidf` | [`esp_fill_random`]Á ü±
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C @ | Emscripten | `*‑emscripten` | [`getentropy`][13]Á üõ
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? < | WASI | `wasm32‑wasi` | [`random_get`]Á üµ¨ ¥ | Web Browser and Node.js | `wasm*‑*‑unknown` | [`Crypto.getRandomValues`] if available, then [`crypto.randomFillSync`] if on Node.js, see [WebAssembly support]Á üÞL I | SOLID | `*-kmc-solid_*` | `SOLID_RNG_SampleRandomBytes`Á ü«@ = | Nintendo 3DS | `*-nintendo-3ds` | [`getrandom`][18]Á üìA > | PS Vita | `*-vita-*` | [`getentropy`][13]Á ü®b _ | QNX Neutrino | `*‑nto-qnx*` | [`/dev/urandom`][14] (identical to `/dev/random`)Á ü‘C @ | AIX | `*-ibm-aix` | [`/dev/urandom`][15]Á üÕ\ Y | Cygwin | `*-cygwin` | [`getrandom`][19] (based on [`RtlGenRandom`])Á ²ú ü¶U R Pull Requests that add support for new targets to `getrandom` are always welcome.Á Œú Ô� ## Unsupported targetsÁ «ú ü¯P M By default, `getrandom` will not compile on unsupported targets, but certainÁ ü€O L features allow a user to select a "fallback" implementation if no supportedÁ ÔÐ implementation exists.Á ëú üï7 4 All of the below mechanisms only affect unsupportedÁ ü§Q N targets. Supported targets will _always_ use their supported implementations.Á üùG D This prevents a crate from overriding a secure source of randomnessÁ üÁ+ ( (either accidentally or intentionally).Á íú üñ3 0 ## `/dev/urandom` fallback on Linux and AndroidÁ ¥ú ü©S P On Linux targets the fallback is present only if either `target_env` is `musl`,Á üýW T or `target_arch` is one of the following: `aarch64`, `arm`, `powerpc`, `powerpc64`,Á üÕQ N `s390x`, `x86`, `x86_64`. Other supported targets [require][platform-support]Á ü§U R kernel versions which support `getrandom` system call, so fallback is not needed.Á ýú ü�V S On Android targets the fallback is present only for the following `target_arch`es:Á üØR O `aarch64`, `arm`, `x86`, `x86_64`. Other `target_arch`es (e.g. RISC-V) requireÁ ü« ! sufficiently high API levels.Á Í ú üÑ X U The fallback can be disabled by enabling the `linux_disable_fallback` crate feature.Á üª S P Note that doing so will bump minimum supported Linux kernel version to 3.17 andÁ üþ * ' Android API level to 23 (Marshmallow).Á © ú ¬ ### RDRAND on x86Á à ú üÇ R O *If the `rdrand` Cargo feature is enabled*, `getrandom` will fallback to usingÁ üš K H the [`RDRAND`] instruction to get randomness on `no_std` `x86`/`x86_64`Á üæ C @ targets. This feature has no effect on other CPU architectures.Á ª ú Ü® ### WebAssembly supportÁ Ê ú üÎ ! This crate fully supports theÁ üð = : [`wasm32-wasi`](https://github.com/CraneStation/wasi) andÁ ü®!N K [`wasm32-unknown-emscripten`](https://www.hellorust.com/setup/emscripten/)Á üý!O L targets. However, the `wasm32-unknown-unknown` target (i.e. the target usedÁ üÍ"( % by `wasm-pack`) is not automaticallyÁ üö"G D supported since, from the target name alone, we cannot deduce whichÁ ü¾#J G JavaScript interface is in use (or if JavaScript is available at all).Á ‰$ú ü�$K H Instead, *if the `js` Cargo feature is enabled*, this crate will assumeÁ üÙ$L I that you are building for an environment containing JavaScript, and willÁ ü¦%P M call the appropriate methods. Both web browser (main window and Web Workers)Á ü÷%@ = and Node.js environments are supported, invoking the methodsÁ ü¸&O L [described above]
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NonZeroU32ÁT �• $ /1| ü‹( t” þ ˜ ö!¹Tó ˜ ä ü„ 9 6 This target/platform is not supported by `getrandom`.Á\Ì
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˜ü½
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# üø @ = The platform-specific `errno` returned a non-positive value.Á”Ç
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˜ÜË üú
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L I Encountered an unexpected situation which should not happen in practice.ÁTÕ
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˜üÿ
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ü€ ’ � Call to [`CCRandomGenerateBytes`](https://opensource.apple.com/source/CommonCrypto/CommonCrypto-60074/include/CommonRandom.h.auto.html) failedÁ ô—
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on iOS, tvOS, or waatchOS.Át‰
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˜ü¿' ü¸‚ Call to Windows [`RtlGenRandom`](https://docs.microsoft.com/en-us/windows/win32/api/ntsecapi/nf-ntsecapi-rtlgenrandom) failed.Á´É
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˜ô» ü€6 3 RDRAND instruction failed due to a hardware issue.ÁlÅ
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˜Ôª üó2 / RDRAND instruction unsupported on this target.ÁL´
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˜Ü› üÞ8 5 The environment does not support the Web Crypto API.ÁT¥
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˜ü�& üÐ; 8 Calling Web Crypto API `crypto.getRandomValues` failed.Á¬š
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˜ü²$ üÐ] Z On VxWorks, call to `randSecure` failed (random number generator is not yet initialized).Áœ¼
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˜ä üñ7 4 Node.js does not have the `crypto` CommonJS module.Á\·
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˜ü¥& üä< 9 Calling Node.js function `crypto.randomFillSync` failed.Á¬¯
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˜üë üæB ? Called from an ES module on Node.js. This is unsupported, see:Á ü9 6 <https://docs.rs/getrandom#nodejs-es-module-support>.Átõ
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˜ì€ ü¦J G Codes below this point represent OS Errors (i.e. positive i32 values).Á üõG D Codes at or above this point, but below [`Error::CUSTOM_START`] areÁ üÁ: 7 reserved for use by the `rand` and `getrandom` crates.ÁtŠ
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ÌÜ“ ü®I F Codes at or above this point can be used by users to define their ownÁ ”ü custom errors.Ád�
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Ìüô ( üÍB ? Extract the raw OS error code (if this error came from the OS)Á ” ú üœ M J This method is identical to [`std::io::Error::raw_os_error()`][1], exceptÁ üî J G that it works in `no_std` contexts. If this method returns `None`, theÁ ü½ H E error value can still be formatted via the `Display` implementation.Á Š ú ü’ O L [1]: https://doc.rust-lang.org/std/io/struct.Error.html#method.raw_os_errorÁdû ˜™4
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êü©$% üç" Extract the bare error code.Á Œ# ú ü”#K H This code can either come from the underlying OS, or be a custom error.Á üä#2 / Use [`Error::raw_os_error()`] to disambiguate.Á$¶$ ˜š
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8 errÁ `ü« ˜ œÇbÕ*ü£“6 üø�K H Fill `dest` with random bytes from the system's preferred random numberÁ \ÄŽ source.Á ÐŽú üÔŽN K This function returns an error on any failure, including partial reads. WeÁ ü£�N K make no guarantees regarding the contents of `dest` on error. If `dest` isÁ üò�J G empty, `getrandom` immediately returns success, making no calls to theÁ ü½� underlying operating system.Á Þ�ú üâ�O L Blocking is possible, at least during early boot; see module documentation.Á ²‘ú ü¶‘M J In general, `getrandom` will be fast enough for interactive usage, thoughÁ ü„’J G significantly slower than a user-space CSPRNG; for the latter considerÁ üÏ’I F [`rand::thread_rng`](https://docs.rs/rand/*/rand/fn.thread_rng.html).ÁLª“ ¶ ¶�H£J º“
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; �LP%ü˜œQ üÊ•L I Version of the `getrandom` function which fills `dest` with random bytesÁ ü—–/ , returns a mutable reference to those bytes.Á Ç–ú üË–J G On successful completion this function is guaranteed to return a sliceÁ ü–—F C which points to the same memory as `dest` and has the same length.Á üÝ—H E In other words, it's safe to assume that `dest` is initialized afterÁ ü¦˜$ ! this function has returned `Ok`.Á ˘ú üϘJ G No part of `dest` will ever be de-initialized at any point, regardlessÁ Äš™ of what is returned.Á ³™ú t·™ # ExamplesÁ Æ™ú lÊ™
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```ignoreÁ üØ™> ; # // We ignore this test since `uninit_array` is unstable.Á ü—š* ' #![feature(maybe_uninit_uninit_array)]Á üš1 . # fn main() -> Result<(), getrandom::Error> {Á üôšA > let mut buf = core::mem::MaybeUninit::uninit_array::<1024>();Á ü¶›@ = let buf: &mut [u8] = getrandom::getrandom_uninit(&mut buf)?;Á t÷› # Ok(()) }Á <†œÒ„„Ÿœ · ·¹LÖ¿Ù¿ Ú¿« Û¿ˆ Ü¿ Ý¿Þ¿ˆ ‚†f|Â
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(õ( ü#. + A small and `no_std` compatible error typeÁ R ú üVP M The [`Error::raw_os_error()`] will indicate if the error is from the OS, andÁ ü§L I if so, which error code the OS gave the application. If such an error isÁ üô? < encountered, please consult with your system documentation.Á ´ ú ü¸J G Internally this type is a NonZeroU32, with certain values reserved forÁ üƒP M certain purposes, see [`Error::INTERNAL_START`] and [`Error::CUSTOM_START`].Á Ô ú üØ= : *If this crate's `"std"` Cargo feature is enabled*, then:Á ü–, ) - [`getrandom::Error`][Error] implementsÁ üÃQ N [`std::error::Error`](https://doc.rust-lang.org/std/error/trait.Error.html)Á ü•W T - [`std::io::Error`](https://doc.rust-lang.org/std/io/struct.Error.html) implementsÁ üíX U [`From<getrandom::Error>`](https://doc.rust-lang.org/std/convert/trait.From.html).Á ,÷ ˜ íñ]T"« > ? š˜ õ(2 š˜ = =
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