https://bugs.kde.org/show_bug.cgi?id=517708
Bug ID: 517708
Summary: RSA-OAEP is not supported for S/MIME (without
informing the user)
Classification: Applications
Product: kmail2
Version First 6.5.0
Reported In:
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: crypto
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
KMail does not support RSA-OAEP and does not inform the user properly that it
doesn't. In general, use of PKCS#1 v1.5 is not recommended and users should be
able to migrate away from it.
STEPS TO REPRODUCE
1. Open an encrypted S/MIME message that uses RSA-OAEP instead of PKCS#1 v1.5
for key transport
OBSERVED RESULT
KMail displays "The message is encrypted for the following keys: [...]"
EXPECTED RESULT
KMail displays "The message is encrypted for the following keys: [...]
(unsupported key transport, OID: 1.2.3.4.5.6)" or it could display the message.
SOFTWARE/OS VERSIONS
Operating System: Ubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-14-generic (64-bit)
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