[gnutls-devel] GnuTLS | Behavioral PKCS#1 v1.5 decryption oracle (Ok/Err bit) (#1901)

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Mon Jun 8 01:50:10 CEST 2026




Daiki Ueno commented: https://gitlab.com/gnutls/gnutls/-/work_items/1901#note_3430852743


Although the implicit rejection guidance is less error-prone for the applications, it is possible to write a safe application with the explicit rejection API, as we do in RSA key exchange in the library (see #1050 and co.). Therefore I don't consider this a security issue but an enhancement request to provide an implicit rejection API.

cc @tomato42

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