openid / openid/OpenID4VCI

Include a section on transaction code brute-force attack protection in 1.0 errata

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#709 1 comment 0 reactions 1 assignee View on GitHub

@awoie is already working on this.

Since Feb 12, 2026.

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Description

PR #686 adds an additional error code, but also adds a section on "transaction code guessing". The existing 1.0 text doesn't seem to include a warning on brute force attacks using transaction code and how to mitigate it. The WG thought it might be good to add this to errata as this is a valid attack vector that needs to be guarded against.

Note: this was discussed during WG call on 2026-02-05

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