TF-M November 2021

tf-m@lists.trustedfirmware.org

16 participants
23 discussions

Using software random generator for FIH library

by Roman.Mazurak＠infineon.com

Hi all, Does anyone know if using software random generator seeded with TRNG to provide random delays for Fault Injection Hardening library is correct from PSA Level 3 certification point of view? The basic idea is to : 1. Use TRNG to provide seed for software random generator on fih_delay_init. 2. Use software random generator to implement fih_delay_random. 3. Periodically reseed software random generator with data from TRNG (optional). Thanks, Roman.

2 years, 5 months

Commit b8bc0d2a breaks Musca_S1

by Thomas Törnblom

Appears there are more recent breakage. b8bc0d2a "HAL: Expand the scope of tfm_hal_platform_init API" breaks Musca_S1 /Thomas -- *Thomas Törnblom*, /Product Engineer/ IAR Systems AB Box 23051, Strandbodgatan 1 SE-750 23 Uppsala, SWEDEN Mobile: +46 76 180 17 80 Fax: +46 18 16 78 01 E-mail: thomas.tornblom(a)iar.com Website: www.iar.com <http://www.iar.com> Twitter: www.twitter.com/iarsystems <http://www.twitter.com/iarsystems>

2 years, 5 months

fce78aef breaks psoc64 console output with IARARM and ARMCLANG toolchain

by Thomas Törnblom

The current version breaks console output for the secure partition on psoc64 with IAR or ARMCLANG. Appears to work with GNUARM. It appears that this commit is the culprit: fce78aef Platform: Duplicate the tfm_hal_platform_init The console starts out good, then during tests only garbage is seen. Linker script issues? /Thomas -- *Thomas Törnblom*, /Product Engineer/ IAR Systems AB Box 23051, Strandbodgatan 1 SE-750 23 Uppsala, SWEDEN Mobile: +46 76 180 17 80 Fax: +46 18 16 78 01 E-mail: thomas.tornblom(a)iar.com Website: www.iar.com <http://www.iar.com> Twitter: www.twitter.com/iarsystems <http://www.twitter.com/iarsystems>

2 years, 5 months

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TF-M November 2021