x/crypto/openpgp: PromptFunction infinite loop

[AndrewVos]

ReadMessage PromptFunction is called forever.

If PromptFunction returns the correct key the first time, then decryption succeeds. If, however, you return the correct key any time after the first time then decryption will never succeed and PromptFunction gets called forever.

[AndrewVos]

Example code is here: https://gist.github.com/AndrewVos/2378569c32d4fbff9b49

[marete]

I am happy to tackle this if no one else is working on it. You may assign it to me.

[mikioh]

@marete, feel free to send a cl (changelist); http://golang.org/doc/contribute.html

[marete]

AndrewVos: Please download and test this CL, which should fix the problem: https://go-review.googlesource.com/2570

[odeke-em]

@marete and @bradfitz, I think @agl fixed this issue with https://go-review.googlesource.com/#/c/14038 but since in the commit message of that CL the magic word Fixes golang/go#9315 wasn't used but instead used Fixes #9315 yet openpgp project belongs under golang/x/crypto, this issue was not auto-closed nor referenced here. This also means that CL https://go-review.googlesource.com/2570 may not be needed either.
Please get the latest @AndrewVos and verify.