x/crypto/openpgp: ReadArmoredKeyRing: unsupported feature: unknown critical signature subpacket type 6

dolmen commented 7 years ago

What version of Go are you using (`go version`)?

go1.8.3 golang.org/x/crypto latest (commit 850760c427c516be930bc91280636328f1a62286 June 13th, 2017)

What operating system and processor architecture are you using (`go env`)?

linux/amd64

What did you do?

Parse a public key using golang.org/x/crypto/openpgp Full test code including the failing key (well known key working with GPG):

package main

import (
    "log"
    "strings"

    "golang.org/x/crypto/openpgp"
)

const keytext = `
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: SKS 1.1.5
Comment: Hostname: pgp.mit.edu

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=SbNu
-----END PGP PUBLIC KEY BLOCK-----
`

func main() {
    _, err := openpgp.ReadArmoredKeyRing(strings.NewReader(keytext))
    if err != nil {
        log.Fatalf("%T %s", err, err)
    }
    log.Print("OK.")
}

What did you expect to see?

2017/06/15 12:07:57 OK.

What did you see instead?

2017/06/15 12:07:57 errors.UnsupportedError openpgp: unsupported feature: unknown critical signature subpacket type 6
exit status 1

It looks like keybase has worked on this issue and may have a partial fix or maybe just a workaround. See keybase/go-crypto#17

SCKelemen commented 7 years ago

@SCKelemen

bradfitz commented 7 years ago

@SCKelemen, what do you mean by writing your name on a bunch of bugs like this?

SCKelemen commented 7 years ago

@bradfitz I want to watch the issue, so it comes up in my notifications involving me. If these issues aren't being worked on, I can try and take them on in my 20% time.

bradfitz commented 7 years ago

Can't you just hit the Subscribe button in the right sidebar?

SCKelemen commented 7 years ago

I'm already subscribed, just overwhelmed by all of the notifications. I'll take some time and unfollow all the other issues

cespare commented 7 years ago

@SCKelemen I suggest finding some other way of writing down the issues you intend to look at later. For example, personally, I keep them organized in a few folders with my other bookmarks.

Writing comments on issues updates a lot of people so it's not a good way to keep track of things for yourself.

bradfitz commented 7 years ago

I asked why you're dropping your name in places, and you said "to watch the issue". I then asked why you don't subscribe to it, and you said you get too many notifications. I'm confused.

FiloSottile commented 3 years ago

Per the accepted #44226 proposal and due to lack of maintenance, the golang.org/x/crypto/openpgp package is now frozen and deprecated. No new changes will be accepted except for security fixes. The package will not be removed.

If this is a security issue, please email security@golang.org and we will assess it and provide a fix.

If you're looking for alternatives, consider the crypto/ed25519 package for simple signatures, golang.org/x/mod/sumdb/note for inline signatures, or filippo.io/age for encryption. You can read a summary of OpenPGP issues and alternatives here.

If you are required to interoperate with OpenPGP systems and need a maintained package, we suggest considering one of multiple community forks of golang.org/x/crypto/openpgp. We don't endorse any specific one.

golang / go