Showing questions for topic:

OpenPGP breaks for newline in html-formatted signature

Environment: Thunderbird for Android: 24.0 OpenKeychain: 6.0.4 (60400) Android Version: 17 Andorid Build: CP3A.261005.002.A1 When sending a PGP/MIME-signed message from T… (baca lebih lanjut)

Environment:

Thunderbird for Android: 24.0 OpenKeychain: 6.0.4 (60400) Android Version: 17 Andorid Build: CP3A.261005.002.A1

When sending a PGP/MIME-signed message from Thunderbird for Android, the OpenPGP signature becomes invalid when an HTML-formatted signature contains markup that enforces line breaks.

A plain newline in the HTML source does not create a visible line break, as expected because HTML collapses whitespace.

However, adding any of the following causes the signature to become invalid:


 

The first and second are used to create a normal line break and the third is used to create an empty spacing line.

Inline HTML formatting, such as or <a>, does not cause the problem.

Expected result:

HTML line-break elements should be included in the content covered by the OpenPGP signature, and the signature should remain valid.

Actual result:

The message is sent successfully, but the received OpenPGP signature cannot be verified whenever the HTML signature contains markup for a line break or empty spacing line.

The issue does not occur when the signature contains only text and inline formatting. Raw .eml samples can be provided if needed.

Open 1

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メールソフト(サンダーバード)受信時にアカウントが赤文字でビックリマークが表示されるようになった。そしてセキュリティの例外を承認しますかURL imap.●●●●●.com:143 他のサイトの証明書ですと表示されるようになった。セキュリティの例外は認証は今までも新規アカウントの登録の時には常に出ていたので 承認していたが、このようなメッ… (baca lebih lanjut)

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Open 1