Previously, only V4 signatures were allowed in PGP messages,
and attempts to digest a message with a V3 signature would
yield an `errors.StructuralError("LiteralData not followed by Signature")`.
This patch fixes this shortcoming, by trying to consume either
signature type and verifying accordingly.
Change-Id: I27c8ea781b75b0f7dfc42c01e7de40f3323e9579
Reviewed-on: https://go-review.googlesource.com/14794
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
SymmetricKeyEncrypted cached the results of decryption so, if a bad
password was given, ReadMessage would prompt forever because a later,
correct password wouldn't override the cached decryption.
The SymmetricKeyEncrypted object can't know whether a given passphrase
is correct so it should never have been a mutable object in the first
place. This change makes it so that it doesn't cache anything.
Fixes#9315
Change-Id: Ic2b75f7f60a575e2182ac7e5c5d4198597c5d0a2
Reviewed-on: https://go-review.googlesource.com/14038
Reviewed-by: Andrew Gerrand <adg@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
Some invalid input may be parsed so that the length of an opaque
subpacket turns out to be 0. In such cases, arrange for a
StructuralError to be returned indicating truncation.
Found using gofuzz.
Fixesgolang/go#11503
Change-Id: Ib9ce8c604f35a31f852adfcd56a22dfd143a9443
Reviewed-on: https://go-review.googlesource.com/12634
Reviewed-by: Adam Langley <agl@golang.org>
packet/packet.go: add ECDSA to the algorithms in CanSign()
packet/signature.go: add support for the features subpacket (which is
used to signal support for the MDC packet)
openpgp/read_test.go: add a key generated by End-to-End as a testcase
(End-to-End's keys are unusual: they set critical bits)
Change-Id: Ifaf3922cd35ea27cf1276d7a8238dd50536eb4ed
Reviewed-on: https://go-review.googlesource.com/2058
Reviewed-by: Adam Langley <agl@golang.org>
In the event that a detached signature fails to verify, the code would
continue trying to find other keys with the same key ID and eventually
conclude that the signature was issued by someone unknown
(ErrUnknownIssuer).
With this change, the signature verification error would be returned
instead. (Technically the last error if several keys had a matching key
id and neither verified.)
Fixesgolang/go#8509.
LGTM=bradfitz
R=bradfitz
CC=golang-codereviews
https://golang.org/cl/125030043
At some point in the distant past, crypto.Hash.New() changed from
returning nil when a hash function wasn't provided, to panicing. Some
of the code in openpgp predates this and was still using the nil check.
LGTM=bradfitz
R=sburford, bradfitz
CC=golang-codereviews
https://golang.org/cl/104850045
Although the package doesn't attempt to fully support ancient, version
3 messages, supporting v3 detached signatures is fairly easy and some
projects (in this case, Ubuntu) are using them for unknown reasons.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/14590043
Manual edits to README.
Moved from main Go repository, deleted Makefiles, ran gofix -r go1rename.
Tested with: go test code.google.com/p/go.crypto/...
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5564059
Filippo Valsorda
Maxwell Krohn
Jacob H. Haven
Adam Langley
SeanBurford
Brian Gitonga Marete
KB Sriram
David Leon Gil
Andrew Gerrand
Russ Cox