Unpredictable random seed for Windows (msys2)

• Reporter: cazfi
• Owner: cazfi
• Type: Patches
• Status: Closed
• Component: General
• MileStone: 2.6.5 (closed)
• Priority: 5 - Medium
• Severity: 5 - Medium
• Resolution: Fixed
• File: 4

Details Reply

Add support for entropy based random seeds for Windows builds. Currently Windows falls back to using time() for setting random seed.

Ticket History (3/11 Histories)

2021-03-24 07:39 Updated by: cazfi

• New Ticket "Unpredictable random seed for Windows" created

2021-03-24 08:56 Updated by: cazfi

• File 0030-Support-unpredictable-random-seed-on-Windows.patch (File ID: 6324) is attached

2021-03-24 08:56 Updated by: cazfi

• File 0018-Support-unpredictable-random-seed-on-Windows.patch (File ID: 6325) is attached

2021-03-24 08:56 Updated by: cazfi

• Resolution Update from None to Accepted

2021-03-26 10:13 Updated by: cazfi

• Resolution Update from Accepted to None

Comment Reply

Current patch ignores the random seed generated. ( generate_seed_bcryptgenrandom() does not set it )

2021-03-29 12:37 Updated by: cazfi

• File 0019-Support-unpredictable-random-seed-on-Windows.patch (File ID: 6358) is attached

2021-03-29 12:37 Updated by: cazfi

• File 0013-Support-unpredictable-random-seed-on-Windows.patch (File ID: 6359) is attached

2021-03-29 12:38 Updated by: cazfi

Comment Reply

New versions that sets the genarated seed to use.

2021-03-29 12:38 Updated by: cazfi

• Resolution Update from None to Accepted

2021-04-02 05:52 Updated by: cazfi

• Summary Updated

Comment Reply

This works fine on msys2.

Msys1 does not have the bcrypt* support needed, so it still falls back to old time based random sources.

Still targeting to S2_6, since we do msys2 builds from that branch too.

2021-04-04 14:30 Updated by: cazfi

• Status Update from Open to Closed
• Owner Update from (None) to cazfi
• Resolution Update from Accepted to Fixed