[TEP-0091] add KMS libraries

go.mod

@@ -65,13 +65,50 @@ require (
 	cloud.google.com/go/compute/metadata v0.2.2 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.13.9 // indirect
 	github.com/cloudflare/circl v1.1.0 // indirect
+	cloud.google.com/go/iam v0.8.0 // indirect
+	cloud.google.com/go/kms v1.7.0 // indirect
+	github.com/Azure/go-autorest/autorest/to v0.4.0 // indirect
+	github.com/Azure/go-autorest/autorest/validation v0.3.1 // indirect
+	github.com/armon/go-metrics v0.4.1 // indirect
+	github.com/armon/go-radix v1.0.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/kms v1.19.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.13.9 // indirect
+	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
 	github.com/emicklei/go-restful/v3 v3.9.0 // indirect
+	github.com/fatih/color v1.13.0 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/gnostic v0.6.9 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.2.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.7.0 // indirect
+	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/hashicorp/go-hclog v1.3.1 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/go-plugin v1.4.6 // indirect
+	github.com/hashicorp/go-retryablehttp v0.7.1 // indirect
+	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
+	github.com/hashicorp/go-secure-stdlib/mlock v0.1.2 // indirect
+	github.com/hashicorp/go-secure-stdlib/parseutil v0.1.7 // indirect
+	github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 // indirect
+	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
+	github.com/hashicorp/go-uuid v1.0.3 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/hashicorp/vault/api v1.8.2 // indirect
+	github.com/hashicorp/vault/sdk v0.6.1 // indirect
+	github.com/hashicorp/yamux v0.1.1 // indirect
+	github.com/jellydator/ttlcache/v2 v2.11.1 // indirect
 	github.com/kr/pretty v0.3.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pjbgf/sha1cd v0.2.3 // indirect
 	github.com/rogpeppe/go-internal v1.8.0 // indirect
 	github.com/skeema/knownhosts v1.1.0 // indirect
+	github.com/oklog/run v1.1.0 // indirect
+	github.com/pierrec/lz4 v2.6.1+incompatible // indirect
+	github.com/rogpeppe/go-internal v1.8.0 // indirect
+	github.com/ryanuber/go-glob v1.0.0 // indirect
 	github.com/theupdateframework/go-tuf v0.5.2-0.20220930112810-3890c1e7ace4 // indirect
 	github.com/zeebo/errs v1.2.2 // indirect
 	go.uber.org/goleak v1.2.0 // indirect

pkg/trustedresources/verifier/verifier.go

@@ -26,6 +26,10 @@ import (
 
 	"github.com/sigstore/sigstore/pkg/cryptoutils"
 	"github.com/sigstore/sigstore/pkg/signature"
+	_ "github.com/sigstore/sigstore/pkg/signature/kms/aws"        // imported to execute init function to register aws kms
+	_ "github.com/sigstore/sigstore/pkg/signature/kms/azure"      // imported to execute init function to register azure kms
+	_ "github.com/sigstore/sigstore/pkg/signature/kms/gcp"        // imported to execute init function to register gcp kms
+	_ "github.com/sigstore/sigstore/pkg/signature/kms/hashivault" // imported to execute init function to register hashivault kms
 	"github.com/tektoncd/pipeline/pkg/apis/config"
 	"github.com/tektoncd/pipeline/pkg/apis/pipeline/v1alpha1"
 	v1 "k8s.io/api/core/v1"