0000090: New arc4random() function. - BusyBox Bug and Patch Tracking

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000090

[uClibc] Security

feature

N/A

02-08-05 19:10

01-08-06 01:07

Reporter

ashes

View Status

public

Assigned To

uClibc

Priority

normal

Resolution

fixed

Status

closed

Product Version

Summary

0000090: New arc4random() function.

Description

This function originates from OpenBSD. It is a very fast random number generator. Attached is all the code we need, and hooks so we can use it with SSP and/or sysctl erandom. I tested it fairly well with SSP and I couldn't messure any performance loss compared to using /dev/urandom directly. I also timed it while using the sysctl hooks and again found no measureable loss. It might need some tweaking to be compatible with c99/standards.

I added it to stdlib because that's where OpenSSL, etc, expects to find it.

Additional Information

Attached Files

uClibc-20050208-arc4random-1.patch [^] (9,384 bytes) 02-08-05 19:10

uClibc-0.9.27-arc4random-1.patch-testing [^] (20,314 bytes) 02-11-05 05:59

Relationships

Notes
(0000045) ashes 02-11-05 05:58	Hi. Ive added hooks for mktemp(3) to use arc4random. This new patch divides urandom from erandom so non-crypto apps don't use kernel entropy. I imagine there will need to be modifications before it would be accepted. Let me know. The sysctl urandom interface was added with minimal modifications/additions to the kernel patch for erandom. regards

(0000869) vapier 01-08-06 01:07	ive imported arc4random() all by itself ... that is, none of the ssp stuff/erandom stuff was added since it's all outdated

Issue History
Date Modified	Username	Field	Change
02-08-05 19:10	ashes	New Issue
02-08-05 19:10	ashes	File Added: uClibc-20050208-arc4random-1.patch
02-11-05 05:58	ashes	Note Added: 0000045
02-11-05 05:59	ashes	File Added: uClibc-0.9.27-arc4random-1.patch-testing
03-16-05 11:55	andersen	Assigned To	andersen => uClibc
01-08-06 01:07	vapier	Note Added: 0000869
01-08-06 01:07	vapier	Status	assigned => closed
01-08-06 01:07	vapier	Resolution	open => fixed