feat: cosign verifier

Signed-off-by: Juncheng Zhu <junczhu@microsoft.com>

Author: junczhu

cosign/go.mod

@@ -0,0 +1,100 @@
+module github.com/ratify-project/ratify-verifier-go/cosign
+
+go 1.22.0
+
+require (
+	github.com/opencontainers/image-spec v1.1.0
+	github.com/ratify-project/ratify-go v0.0.0-20250121002110-2815af359901
+	github.com/sigstore/cosign/v2 v2.2.4
+	github.com/sigstore/sigstore v1.8.3
+	github.com/stretchr/testify v1.9.0
+	oras.land/oras-go/v2 v2.5.0
+)
+
+require (
+	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/blang/semver v3.5.1+incompatible // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.14.3 // indirect
+	github.com/cyberphone/json-canonicalization v0.0.0-20231011164504-785e29786b46 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/digitorus/pkcs7 v0.0.0-20230818184609-3a137a874352 // indirect
+	github.com/digitorus/timestamp v0.0.0-20231217203849-220c5c2851b7 // indirect
+	github.com/docker/cli v24.0.7+incompatible // indirect
+	github.com/docker/distribution v2.8.3+incompatible // indirect
+	github.com/docker/docker v24.0.9+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.8.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/go-chi/chi v4.1.2+incompatible // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-openapi/analysis v0.23.0 // indirect
+	github.com/go-openapi/errors v0.22.0 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.21.0 // indirect
+	github.com/go-openapi/loads v0.22.0 // indirect
+	github.com/go-openapi/runtime v0.28.0 // indirect
+	github.com/go-openapi/spec v0.21.0 // indirect
+	github.com/go-openapi/strfmt v0.23.0 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/go-openapi/validate v0.24.0 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/certificate-transparency-go v1.1.8 // indirect
+	github.com/google/go-containerregistry v0.19.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/hashicorp/hcl v1.0.1-vault-5 // indirect
+	github.com/in-toto/in-toto-golang v0.9.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jedisct1/go-minisign v0.0.0-20230811132847-661be99b8267 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/letsencrypt/boulder v0.0.0-20231026200631-000cd05d5491 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/nozzle/throttler v0.0.0-20180817012639-2ea982251481 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sassoftware/relic v7.2.1+incompatible // indirect
+	github.com/secure-systems-lab/go-securesystemslib v0.8.0 // indirect
+	github.com/shibumi/go-pathspec v1.3.0 // indirect
+	github.com/sigstore/rekor v1.3.6 // indirect
+	github.com/sigstore/timestamp-authority v1.2.2 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/cobra v1.8.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.18.2 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d // indirect
+	github.com/theupdateframework/go-tuf v0.7.0 // indirect
+	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect
+	github.com/transparency-dev/merkle v0.0.2 // indirect
+	github.com/vbatts/tar-split v0.11.5 // indirect
+	go.mongodb.org/mongo-driver v1.14.0 // indirect
+	go.opentelemetry.io/otel v1.24.0 // indirect
+	go.opentelemetry.io/otel/metric v1.24.0 // indirect
+	go.opentelemetry.io/otel/trace v1.24.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/exp v0.0.0-20231108232855-2478ac86f678 // indirect
+	golang.org/x/mod v0.16.0 // indirect
+	golang.org/x/sync v0.10.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/term v0.19.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	gopkg.in/go-jose/go-jose.v2 v2.6.3 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+)