- psa-crypto - lists.trustedfirmware.org

Re: Multipart Operations with PSA Crypto Drivers

by Sato, Masaki

Hi Gilles, Thank you for your quick response. I agree that it makes sense to implement multipart buffering in the PSA Crypto Driver as the SW algorithm does. I wonder if PSA Crypto Driver developers read this forum, but I haven't found a dedicated forum for PSA Crypto Driver. If AES multipart buffering implementation is already somewhere in repository branches, I'd appreciate if you could share such information. I'd like to use the opensource code with as little changes as possible. Thank you. Masaki Sato ________________________________ CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use of the intended recipient(s) and contain information that may be Garmin confidential and/or Garmin legally privileged. If you have received this email in error, please notify the sender by reply email and delete the message. Any disclosure, copying, distribution or use of this communication (including attachments) by someone other than the intended recipient is prohibited. Thank you.

2 weeks, 2 days

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Multipart Operations with PSA Crypto Drivers

by Sato, Masaki

Hi PSA Crypto Developer Forum, I'm currently testing my PSA Crypto Driver integration on a hardware platform. Following the legacy test approach, I have built the Mbed TLS test suite with the PSA Crypto tests enabled, integrated the PSA Crypto Driver, and am cross-checking the results against those from the built-in software cipher implementations. First, if this approach is not currently recommended for testing a PSA Crypto Driver integration on a hardware platform, I would appreciate any guidance on the recommended test methodology. Regarding the Mbed TLS test suite approach, I'm currently investigating a failure in multipart testing. For example, the following test case fails: PSA symmetric encryption multipart: AES-ECB, 13+19 bytes .......... FAILED function_output_length == output1_length With the built-in software implementation, when the first input is smaller than the AES block size (16 bytes) and is passed to mbedtls_cipher_update(), the input data is copied into the unprocessed_data buffer in the cipher context, and the cipher operation is deferred. When the second input is passed to mbedtls_cipher_update(), it is appended to the buffered data, allowing the combined data to be processed. However, with the PSA Crypto Driver API, I don't see any equivalent buffering of the first input. Instead, the data appears to be passed to the hardware accelerator on each call, regardless of whether the input size is smaller than the block size. Is this the expected behavior of the PSA Crypto Driver implementation for the multipart cipher operation? If I ignore the output-length check for the update calls for both the first and second parts, the final result still does not match the expected result. This makes me suspect that I may be missing something in the way multipart operations are expected to be handled by the PSA Crypto Driver. I would appreciate any insight into how multipart operations should be implemented or tested in a PSA Crypto Driver, particularly for block ciphers such as AES-ECB. Masaki Sato ________________________________ CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use of the intended recipient(s) and contain information that may be Garmin confidential and/or Garmin legally privileged. If you have received this email in error, please notify the sender by reply email and delete the message. Any disclosure, copying, distribution or use of this communication (including attachments) by someone other than the intended recipient is prohibited. Thank you.

2 weeks, 3 days

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Re: PSA Crypto Drivers Dependency

by Amjad Ouled-Ameur

Hi Masaki, Thanks for the question. At the moment, we do not plan to publish standalone releases of tf-psa-crypto-drivers. The intention is that drivers hosted in this repository are released and validated as part of the projects that integrate them, rather than independently. For the CryptoCell driver specifically, the main integration is TF-M. This also explains some of the dependencies you noticed on TF-M headers and utilities: the driver is currently primarily intended to be integrated and built within that environment rather than consumed as a completely standalone component. For a given TF-M release, the corresponding tf-psa-crypto-drivers revision can be determined from the TF-M source tree: the TF-M CMake configuration pins the specific tf-psa-crypto-drivers Git revision used by that release. That is therefore the best reference for identifying the driver revision that was integrated and tested with a particular TF-M release. There is currently no equivalent one-to-one release mapping of the form: `TF-PSA-Crypto release -> tf-psa-crypto-drivers release -> TF-M release` In particular, selecting TF-PSA-Crypto 1.2.0 does not by itself identify a specific tf-psa-crypto-drivers or TF-M revision. Compatibility between TF-PSA-Crypto and external drivers is primarily defined through the PSA Crypto driver interface, and work is ongoing around formalizing that interface and its release/versioning model. Once that interface has a formal release/versioning scheme, we can also consider whether clearer compatibility documentation between TF-PSA-Crypto and external driver implementations would be useful. So, for CryptoCell today, I would recommend starting from the TF-M release you intend to use and following the tf-psa-crypto-drivers revision pinned by that release. Regards, Amjad CryptoCell Maintainer

4 weeks

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PSA Crypto Drivers Dependency

by Sato, Masaki

Hi PSA Crypto Developer Forum Organizer, I'm currently integrating PSA Crypto Drivers into our codebase for hardware that includes CryptoCell module. While reviewing the Github repositories, I noticed that t-psa-crypto-drivers do not appear to publish tagged releases. https://github.com/Mbed-TLS/tf-psa-crypto-drivers In contrast, tf-psa-crypto provides official releases: https://github.com/Mbed-TLS/TF-PSA-Crypto I also noticed that tf-psa-crypto-drivers appears to have some dependencies on the TFM code (e.g. crypto_driver_random.h, tfm_utils.h, cc3xx_aes_external_key_loader.c, etc...) Is there any documentation that describes the dependency relationship and version mapping between TF-PSA-Crypto, TF-PSA-Crypto-Drivers commit, and TF-M? For example, if we choose TF-PSA-Crypto 1.2.0, how can we determine which tf-psa-crypto-drivers and TFM commit point were used in the official testing and validation of TF-PSA-Crypto release? Any guidance or pointers to the relevant release notes or documentation would be greatly appreciated. Thank you. Regards, Masaki Sato ________________________________ CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use of the intended recipient(s) and contain information that may be Garmin confidential and/or Garmin legally privileged. If you have received this email in error, please notify the sender by reply email and delete the message. Any disclosure, copying, distribution or use of this communication (including attachments) by someone other than the intended recipient is prohibited. Thank you.

1 month, 1 week

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Updated invitation with note: MBed-TLS Technical Forum - Asia @ Every 4 weeks from 10am to 10:50am on Monday (GMT) (psa-crypto@lists.trustedfirmware.org)

by Shaun Longhorn

This event has been updated with a note: "Pushing meeting link" Changed: location MBed-TLS Technical Forum - Asia Every 4 weeks from 10am to 10:50am on Monday United Kingdom Time Location https://linaro-org.zoom.us/j/97758661706?pwd=baMjUvnWbY20z3ignQca7QVahhozkI… https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9775866… Join Zoom Meeting https://linaro-org.zoom.us/j/99853938085?pwd=D3au597hb9J1veo1W74pIqkvY6VaDI… Join by phone (US) +1 833-548-0282 passcode: 12278212 Joining instructions https://www.google.com/url?q=https://applications.zoom.us/addon/invitation/… Joining notes Meeting host: shaun.longhorn(a)linaro.org Join Zoom Meeting: https://linaro-org.zoom.us/j/99853938085?pwd=D3au597hb9J1veo1W74pIqkvY6VaDI… ──────────https://linaro-org.zoom.us/j/99853938085?pwd=D3au597hb9J1veo1W74pIqkvY6VaDI.1&jst=2Joining Instructions────────── Guests mbed-tls(a)lists.trustedfirmware.org psa-crypto(a)lists.trustedfirmware.org View all guest info https://calendar.google.com/calendar/event?action=VIEW&eid=NjI4c3NnYjFoZHRh… Reply for psa-crypto(a)lists.trustedfirmware.org and view more details https://calendar.google.com/calendar/event?action=VIEW&eid=NjI4c3NnYjFoZHRh… Your attendance is optional. ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

2 months, 3 weeks

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Synced invitation: MBed-TLS Technical Forum - Asia @ Every 4 weeks from 10am to 10:50am on Monday (BST) (psa-crypto@lists.trustedfirmware.org)

by Shaun Longhorn

This email keeps the event up to date in your calendar. MBed-TLS Technical Forum - Asia Every 4 weeks from 10am to 10:50am on Monday United Kingdom Time Location https://linaro-org.zoom.us/j/97758661706?pwd=baMjUvnWbY20z3ignQca7QVahhozkI… https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9775866… Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: MBed-TLS Technical Forum - AsiaTime: Jun 16, 2025 10:00 AM London Every 4 weeks on Mon, 39 occurrence(s)Please download and import the following iCalendar (.ics) files to your calendar system.Weekly: https://linaro-org.zoom.us/meeting/tJMqcuGuqDotGtIbACm498ytl0ZhydWKdu1b/ics… Zoom Meetinghttps://linaro-org.zoom.us/j/97758661706?pwd=baMjUvnWbY20z3ignQca7QVahhozkI.1Meeting ID: 977 5866 1706Passcode: 577208---One tap mobile+16892781000,,97758661706# US+17193594580,,97758661706# US---Dial by your location• +1 689 278 1000 US• +1 719 359 4580 US• +1 253 205 0468 US• +1 253 215 8782 US (Tacoma)• +1 301 715 8592 US (Washington DC)• +1 305 224 1968 US• +1 309 205 3325 US• +1 312 626 6799 US (Chicago)• +1 346 248 7799 US (Houston)• +1 360 209 5623 US• +1 386 347 5053 US• +1 507 473 4847 US• +1 564 217 2000 US• +1 646 558 8656 US (New York)• +1 646 931 3860 US• +1 669 444 9171 US• +1 669 900 9128 US (San Jose)• 833 548 0282 US Toll-free• 833 928 4608 US Toll-free• 833 928 4609 US Toll-free• 833 928 4610 US Toll-free• 877 853 5247 US Toll-free• 888 788 0099 US Toll-free• 833 548 0276 US Toll-freeMeeting ID: 977 5866 1706Find your local number: https://linaro-org.zoom.us/u/acdtApJNbc Guests mbed-tls(a)lists.trustedfirmware.org psa-crypto(a)lists.trustedfirmware.org ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

2 months, 3 weeks

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Updated invitation with note: MBed TLS Technical Forum - US @ Every 4 weeks from 4:30pm to 5:30pm on Monday (BST) (psa-crypto@lists.trustedfirmware.org)

by Shaun Longhorn

This event has been updated with a note: "Pushing to fix meeting link issue" Changed: location MBed TLS Technical Forum - US Every 4 weeks from 4:30pm to 5:30pm on Monday United Kingdom Time Location https://linaro-org.zoom.us/j/93546216467?pwd=ja9Nxd0uLBn04jg1Be0NTy17Konzfl… https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9354621… Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: MBed TLS Technical Forum - USTime: May 4, 2026 04:30 PM LondonEvery 4 weeks on Mon, 38 occurrence(s)Please download and import the following iCalendar (.ics) files to your calendar system.Weekly: https://linaro-org.zoom.us/meeting/tJcoc--qrz0uHNNmuZMtfpylBgIZjC2so7xz/ics… Zoom Meetinghttps://linaro-org.zoom.us/j/93546216467?pwd=ja9Nxd0uLBn04jg1Be0NTy17Konzfl.1Meeting ID: 935 4621 6467Passcode: 683772---One tap mobile+13126266799,,93546216467# US (Chicago)+13462487799,,93546216467# US (Houston)---Dial by your location• +1 312 626 6799 US (Chicago)• +1 346 248 7799 US (Houston)• +1 360 209 5623 US• +1 386 347 5053 US• +1 507 473 4847 US• +1 564 217 2000 US• +1 646 558 8656 US (New York)• +1 646 931 3860 US• +1 669 444 9171 US• +1 669 900 9128 US (San Jose)• +1 689 278 1000 US• +1 719 359 4580 US• +1 253 205 0468 US• +1 253 215 8782 US (Tacoma)• +1 301 715 8592 US (Washington DC)• +1 305 224 1968 US• +1 309 205 3325 US• 833 928 4609 US Toll-free• 833 928 4610 US Toll-free• 877 853 5247 US Toll-free• 888 788 0099 US Toll-free• 833 548 0276 US Toll-free• 833 548 0282 US Toll-free• 833 928 4608 US Toll-freeMeeting ID: 935 4621 6467Find your local number:https://linaro-org.zoom.us/u/azKzC20VI Guests psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org hordijk(a)aurora.tech Ben Taylor cjej65eug(a)gmail.com View all guest info https://calendar.google.com/calendar/event?action=VIEW&eid=dm9wcGhnbnZvMnRh… Reply for psa-crypto(a)lists.trustedfirmware.org and view more details https://calendar.google.com/calendar/event?action=VIEW&eid=dm9wcGhnbnZvMnRh… Your attendance is optional. ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

2 months, 3 weeks

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Synced invitation: MBed TLS Technical Forum - US @ Mon 6 Apr 2026 4:30pm - 5:30pm (BST) (psa-crypto@lists.trustedfirmware.org)

by shaun.longhorn＠linaro.org

This email keeps the event up to date in your calendar. MBed TLS Technical Forum - US Monday 6 Apr 2026 ⋅ 4:30pm – 5:30pm United Kingdom Time Trusted Firmware is inviting you to a scheduled Zoom meeting.Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: MBed TLS Tech Forum - USTime: Aug 28, 2023 04:30 PM London Every 4 weeks on Mon, 20 occurrence(s) Aug 28, 2023 04:30 PM Sep 25, 2023 04:30 PM Oct 23, 2023 04:30 PM Nov 20, 2023 04:30 PM Dec 18, 2023 04:30 PM Jan 15, 2024 04:30 PM Feb 12, 2024 04:30 PM Mar 11, 2024 04:30 PM Apr 8, 2024 04:30 PM May 6, 2024 04:30 PM Jun 3, 2024 04:30 PM Jul 1, 2024 04:30 PM Jul 29, 2024 04:30 PM Aug 26, 2024 04:30 PM Sep 23, 2024 04:30 PM Oct 21, 2024 04:30 PM Nov 18, 2024 04:30 PM Dec 16, 2024 04:30 PM Jan 13, 2025 04:30 PM Feb 10, 2025 04:30 PMPlease download and import the following iCalendar (.ics) files to your calendar system.Weekly: https://linaro-org.zoom.us/meeting/tJ0udu2spj0vHtbQtlCmHwhHCT7ECtJI39J4/ics… Zoom Meetinghttps://linaro-org.zoom.us/j/99314486542?pwd=Q1ZjaFhQeDRrQWxsa3MvT1Mwditqdz09Meeting ID: 993 1448 6542Passcode: 628327---One tap mobile+13462487799,,99314486542# US (Houston)+16694449171,,99314486542# US---Dial by your location• +1 346 248 7799 US (Houston)• +1 669 444 9171 US• +1 669 900 9128 US (San Jose)• +1 719 359 4580 US• +1 253 205 0468 US• +1 253 215 8782 US (Tacoma)• +1 360 209 5623 US• +1 386 347 5053 US• +1 507 473 4847 US• +1 564 217 2000 US• +1 646 558 8656 US (New York)• +1 646 931 3860 US• +1 689 278 1000 US• +1 301 715 8592 US (Washington DC)• +1 305 224 1968 US• +1 309 205 3325 US• +1 312 626 6799 US (Chicago)• 877 853 5247 US Toll-free• 888 788 0099 US Toll-freeMeeting ID: 993 1448 6542Find your local number: https://linaro-org.zoom.us/u/adSjuOyMhI Guests psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

5 months, 3 weeks

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Synced invitation: MBed TLS Technical Forum - US @ Mon 4 May 2026 4:30pm - 5:30pm (BST) (psa-crypto@lists.trustedfirmware.org)

by shaun.longhorn＠linaro.org

This email keeps the event up to date in your calendar. MBed TLS Technical Forum - US Monday 4 May 2026 ⋅ 4:30pm – 5:30pm United Kingdom Time Trusted Firmware is inviting you to a scheduled Zoom meeting.Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: MBed TLS Tech Forum - USTime: Aug 28, 2023 04:30 PM London Every 4 weeks on Mon, 20 occurrence(s) Aug 28, 2023 04:30 PM Sep 25, 2023 04:30 PM Oct 23, 2023 04:30 PM Nov 20, 2023 04:30 PM Dec 18, 2023 04:30 PM Jan 15, 2024 04:30 PM Feb 12, 2024 04:30 PM Mar 11, 2024 04:30 PM Apr 8, 2024 04:30 PM May 6, 2024 04:30 PM Jun 3, 2024 04:30 PM Jul 1, 2024 04:30 PM Jul 29, 2024 04:30 PM Aug 26, 2024 04:30 PM Sep 23, 2024 04:30 PM Oct 21, 2024 04:30 PM Nov 18, 2024 04:30 PM Dec 16, 2024 04:30 PM Jan 13, 2025 04:30 PM Feb 10, 2025 04:30 PMPlease download and import the following iCalendar (.ics) files to your calendar system.Weekly: https://linaro-org.zoom.us/meeting/tJ0udu2spj0vHtbQtlCmHwhHCT7ECtJI39J4/ics… Zoom Meetinghttps://linaro-org.zoom.us/j/99314486542?pwd=Q1ZjaFhQeDRrQWxsa3MvT1Mwditqdz09Meeting ID: 993 1448 6542Passcode: 628327---One tap mobile+13462487799,,99314486542# US (Houston)+16694449171,,99314486542# US---Dial by your location• +1 346 248 7799 US (Houston)• +1 669 444 9171 US• +1 669 900 9128 US (San Jose)• +1 719 359 4580 US• +1 253 205 0468 US• +1 253 215 8782 US (Tacoma)• +1 360 209 5623 US• +1 386 347 5053 US• +1 507 473 4847 US• +1 564 217 2000 US• +1 646 558 8656 US (New York)• +1 646 931 3860 US• +1 689 278 1000 US• +1 301 715 8592 US (Washington DC)• +1 305 224 1968 US• +1 309 205 3325 US• +1 312 626 6799 US (Chicago)• 877 853 5247 US Toll-free• 888 788 0099 US Toll-freeMeeting ID: 993 1448 6542Find your local number: https://linaro-org.zoom.us/u/adSjuOyMhI Guests psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

5 months, 3 weeks

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Updated invitation with note: MBed TLS Technical Forum - US @ Every 4 weeks from 4:30pm to 5:30pm on Monday (BST) (psa-crypto@lists.trustedfirmware.org)

by Shaun Longhorn

This event has been updated with a note: "Updated expired zoom link" Changed: title, time, description MBed TLS Technical Forum - US Every 4 weeks from 4:30pm to 5:30pm on Monday United Kingdom Time Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: MBed TLS Technical Forum - USTime: May 4, 2026 04:30 PM LondonEvery 4 weeks on Mon, 38 occurrence(s)Please download and import the following iCalendar (.ics) files to your calendar system.Weekly: https://linaro-org.zoom.us/meeting/tJcoc--qrz0uHNNmuZMtfpylBgIZjC2so7xz/ics… Zoom Meetinghttps://linaro-org.zoom.us/j/93546216467?pwd=ja9Nxd0uLBn04jg1Be0NTy17Konzfl.1Meeting ID: 935 4621 6467Passcode: 683772---One tap mobile+13126266799,,93546216467# US (Chicago)+13462487799,,93546216467# US (Houston)---Dial by your location• +1 312 626 6799 US (Chicago)• +1 346 248 7799 US (Houston)• +1 360 209 5623 US• +1 386 347 5053 US• +1 507 473 4847 US• +1 564 217 2000 US• +1 646 558 8656 US (New York)• +1 646 931 3860 US• +1 669 444 9171 US• +1 669 900 9128 US (San Jose)• +1 689 278 1000 US• +1 719 359 4580 US• +1 253 205 0468 US• +1 253 215 8782 US (Tacoma)• +1 301 715 8592 US (Washington DC)• +1 305 224 1968 US• +1 309 205 3325 US• 833 928 4609 US Toll-free• 833 928 4610 US Toll-free• 877 853 5247 US Toll-free• 888 788 0099 US Toll-free• 833 548 0276 US Toll-free• 833 548 0282 US Toll-free• 833 928 4608 US Toll-freeMeeting ID: 935 4621 6467Find your local number:https://linaro-org.zoom.us/u/azKzC20VI Guests psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org View all guest info https://calendar.google.com/calendar/event?action=VIEW&eid=dm9wcGhnbnZvMnRh… Reply for psa-crypto(a)lists.trustedfirmware.org and view more details https://calendar.google.com/calendar/event?action=VIEW&eid=dm9wcGhnbnZvMnRh… Your attendance is optional. ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

5 months, 3 weeks

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