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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/arc4random.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/arc4random.3')
-rw-r--r-- | man3/arc4random.3 | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/man3/arc4random.3 b/man3/arc4random.3 deleted file mode 100644 index b205ca9..0000000 --- a/man3/arc4random.3 +++ /dev/null @@ -1,109 +0,0 @@ -'\" t -.\" Copyright (C) 2023 Alejandro Colomar <alx@kernel.org> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.TH arc4random 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -arc4random, arc4random_uniform, arc4random_buf -\- cryptographically-secure pseudorandom number generator -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <stdlib.h> -.P -.B uint32_t arc4random(void); -.BI "uint32_t arc4random_uniform(uint32_t " upper_bound ); -.BI "void arc4random_buf(void " buf [. n "], size_t " n ); -.fi -.SH DESCRIPTION -These functions give cryptographically-secure pseudorandom numbers. -.P -.BR arc4random () -returns a uniformly-distributed value. -.P -.BR arc4random_uniform () -returns a uniformly-distributed value less than -.I upper_bound -(see BUGS). -.P -.BR arc4random_buf () -fills the memory pointed to by -.IR buf , -with -.I n -bytes of pseudorandom data. -.P -The -.BR rand (3) -and -.BR drand48 (3) -families of functions should only be used where -the quality of the pseudorandom numbers is not a concern -.I and -there's a need for repeatability of the results. -Unless you meet both of those conditions, -use the -.BR arc4random () -functions. -.SH RETURN VALUE -.BR arc4random () -returns a pseudorandom number. -.P -.BR arc4random_uniform () -returns a pseudorandom number less than -.I upper_bound -for valid input, or -.B 0 -when -.I upper_bound -is invalid. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR arc4random (), -.BR arc4random_uniform (), -.BR arc4random_buf () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -BSD. -.SH HISTORY -OpenBSD 2.1, -FreeBSD 3.0, -NetBSD 1.6, -DragonFly 1.0, -libbsd, -glibc 2.36. -.SH BUGS -An -.I upper_bound -of -.B 0 -doesn't make sense in a call to -.BR arc4random_uniform (). -Such a call will fail, and return -.BR 0 . -Be careful, -since that value is -.I not -less than -.IR upper_bound . -In some cases, -such as accessing an array, -using that value could result in Undefined Behavior. -.SH SEE ALSO -.BR getrandom (3), -.BR rand (3), -.BR drand48 (3), -.BR random (7) |