* Update trillian dependency to master

This removes calls to the trillian verifier and replaces them with calls to a new rekor verify package!
The `verify` package currently only verifies the signed log root.

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Fix lint

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Add verifier back in and update trillian images

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Make verify private

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Address code review comments

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Roll back to trillian v1.3.13

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Pin trillian to latest commit

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Add new type for JAR archives

This adds support for a new pluggable type that can extract signatures
from signed JAR files. Per the JAR spec, a special manifest file is
created with the digest hashes of all included content in the JAR file.
It is this special manifest file that is then signed, and included in a
file within the archive in PKCS7 format. The PKCS7 file also includes
the X509 certificate that can be used to verify the signed manifest file
inside of the JAR.

Signed-off-by: Bob Callaway <bob.callaway@gmail.com>

* Add signing package for signing within rekor

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Remove public key from trillian and add in TODO for getting public key from Signer

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Create signer flag and store signer in api struct

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Remove public key from tlog in API, replace with a new pubkey tag

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Make sure we can get the public key locally

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Fix build error

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Reuse cosign implementation of signing interface

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* fix lint

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Add in-memory signer, store unmarshaled public key in api

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Temporarily skip the log_info test, since we are now getting the public key from rekor and not trillian

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Replace cosign import with sigstore

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Add unit test for memory signer

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Remove unnecessary code

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* skip test

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Sign the signature for the signed log root ourselves

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

* Include memory as a signer option for signer flag, make memory default

Signed-off-by: Priya Wadhwa <priyawadhwa@google.com>

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.36.1 to 1.37.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.36.1...v1.37.0

)

Signed-off-by: dependabot[bot] <support@github.com>

* fail build if diff exists

Right now the build tries to detect mismatches between what is in the change versus any changes actually occurred from a clean rebuild (e.g. missed checking in any updates to generated code). However if those are present, the build logs print that out but do not cause the build to fail.

Also bumps GOVERSION to match what is used in Dockerfile so we don't have go.mod or go.sum as a reason for above.

Signed-off-by: Bob Callaway <bob.callaway@gmail.com>

Bumps [github.com/go-openapi/swag](https://github.com/go-openapi/swag) from 0.19.14 to 0.19.15.
- [Release notes](https://github.com/go-openapi/swag/releases)
- [Commits](https://github.com/go-openapi/swag/compare/v0.19.14...v0.19.15

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/go-openapi/strfmt](https://github.com/go-openapi/strfmt) from 0.20.0 to 0.20.1.
- [Release notes](https://github.com/go-openapi/strfmt/releases)
- [Commits](https://github.com/go-openapi/strfmt/compare/v0.20.0...v0.20.1

)

Signed-off-by: dependabot[bot] <support@github.com>

This isn't needed and prevents "go install" from working.

Signed-off-by: Dan Lorenc <dlorenc@google.com>

Bumps [github.com/go-openapi/runtime](https://github.com/go-openapi/runtime) from 0.19.26 to 0.19.27.
- [Release notes](https://github.com/go-openapi/runtime/releases)
- [Commits](https://github.com/go-openapi/runtime/compare/v0.19.26...v0.19.27

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.9.0 to 1.10.0.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.9.0...v1.10.0

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

them to GCS.

We don't always have a new one, and under load there might be "batches" of entries
all integrated into the same STH. This means there is no guaranteed frequency of updates
or even a guarantee that every index will exist.

The values (and timestamps) should be monotonically increasing though.

Signed-off-by: Dan Lorenc <dlorenc@google.com>

Since the verification of a signature will, by definition, include
verifying the content has not been altered, it is unnecessary to require
users of the CLI or REST API to specify the SHA256 hash of the content
when creating a new entry into the log.

Note that the server will still compute the hash and store it in the log
for ease of comparison.

Fixes #180

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

* Bump github.com/google/trillian from 1.3.10 to 1.3.13

Bumps [github.com/google/trillian](https://github.com/google/trillian) from 1.3.10 to 1.3.13.
- [Release notes](https://github.com/google/trillian/releases)
- [Changelog](https://github.com/google/trillian/blob/master/CHANGELOG.md)
- [Commits](https://github.com/google/trillian/compare/v1.3.10...v1.3.13

)

Signed-off-by: dependabot[bot] <support@github.com>

* update to new package structure

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

* register hasher

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

* revert to original naming

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Bob Callaway <bcallawa@redhat.com>
Co-authored-by: Bob Callaway <bobcallaway@users.noreply.github.com>

* Bump github.com/go-openapi/spec from 0.20.1 to 0.20.3

Bumps [github.com/go-openapi/spec](https://github.com/go-openapi/spec) from 0.20.1 to 0.20.3.
- [Release notes](https://github.com/go-openapi/spec/releases)
- [Commits](https://github.com/go-openapi/spec/compare/v0.20.1...v0.20.3

)

Signed-off-by: dependabot[bot] <support@github.com>

* update go.sum

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Luke Hinds <7058938+lukehinds@users.noreply.github.com>
Co-authored-by: Bob Callaway <bcallawa@redhat.com>

Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 1.0.0 to 1.1.3.
- [Release notes](https://github.com/spf13/cobra/releases)
- [Changelog](https://github.com/spf13/cobra/blob/master/CHANGELOG.md)
- [Commits](https://github.com/spf13/cobra/compare/v1.0.0...v1.1.3

)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [github.com/go-openapi/errors](https://github.com/go-openapi/errors) from 0.19.9 to 0.20.0.
- [Release notes](https://github.com/go-openapi/errors/releases)
- [Commits](https://github.com/go-openapi/errors/compare/v0.19.9...v0.20.0

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/go-openapi/validate](https://github.com/go-openapi/validate) from 0.20.1 to 0.20.2.
- [Release notes](https://github.com/go-openapi/validate/releases)
- [Commits](https://github.com/go-openapi/validate/compare/v0.20.1...v0.20.2

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/go-openapi/loads](https://github.com/go-openapi/loads) from 0.20.0 to 0.20.2.
- [Release notes](https://github.com/go-openapi/loads/releases)
- [Commits](https://github.com/go-openapi/loads/compare/v0.20.0...v0.20.2

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

This just exposes the default go metrics for now. We can use middleware to expose
more custom metrics for our API.

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

Co-authored-by: Dan Lorenc <dlorenc@google.com>

This should fix the rest of the errors.

- Run through the get flow, make sure the output is well structured
- Call loginfo, make sure there are no errors.

* Add support for ed25519/signify/minisign keys and signatures

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

- adds trillian API object to context
- improves request error logging pre and post validation
- use consistent request context throughout all GRPC calls
- improve validation of incoming UUID values
- disable swagger UI endpoint
- only print cacheable headers if response code is HTTP 2XX
- use GetLeavesByRange instead of deprecated GetLeavesByIndex API

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

* add types unit tests

* explicitly ignore error from ValidateLeaf

* improve PGP unit test coverage (#58)

* update & improve pgp unit tests

* add types unit tests

* explicitly ignore error from ValidateLeaf

* use files instead of embedded strings

* update & improve pgp unit tests

If the HTTP fetch failed, the io.Pipe created to pass the response body to the
goroutines that compute the SHA256 hash and verify the signature would be leaked.

Some changes:
- import names (app -> api, logging -> log)
- Commands package (cmd -> app)

This also breaks the go module dependency on rekor-server.

Seems to work for Node right now. I haven't tested on linux.