835 - Keyless Support for SBOM Attestations (#910)

Co-authored-by: Alex Goodman <alex.goodman@anchore.com>

cmd/syft/cli/attest.go

@@ -8,6 +8,7 @@ import (
 	"github.com/anchore/syft/cmd/syft/cli/options"
 	"github.com/anchore/syft/internal"
 	"github.com/anchore/syft/internal/config"
+	"github.com/sigstore/cosign/cmd/cosign/cli/sign"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -53,7 +54,19 @@ func Attest(v *viper.Viper, app *config.Application, ro *options.RootOptions) *c
 				checkForApplicationUpdate()
 			}
 
-			return attest.Run(cmd.Context(), app, args)
+			// build cosign key options for attestation
+			ko := sign.KeyOpts{
+				KeyRef:                   app.Attest.KeyRef,
+				FulcioURL:                app.Attest.FulcioURL,
+				IDToken:                  app.Attest.FulcioIdentityToken,
+				InsecureSkipFulcioVerify: app.Attest.InsecureSkipFulcioVerify,
+				RekorURL:                 app.Attest.RekorURL,
+				OIDCIssuer:               app.Attest.OIDCIssuer,
+				OIDCClientID:             app.Attest.OIDCClientID,
+				OIDCRedirectURL:          app.Attest.OIDCRedirectURL,
+			}
+
+			return attest.Run(cmd.Context(), app, ko, args)
 		},
 	}
 

cmd/syft/cli/attest/attest.go

@@ -6,7 +6,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
-	"strings"
+
+	"github.com/wagoodman/go-progress"
 
 	"github.com/anchore/stereoscope"
 	"github.com/anchore/stereoscope/pkg/image"
@@ -18,15 +19,28 @@ import (
 	"github.com/anchore/syft/internal/formats/cyclonedxjson"
 	"github.com/anchore/syft/internal/formats/spdx22json"
 	"github.com/anchore/syft/internal/formats/syftjson"
+	"github.com/anchore/syft/internal/log"
 	"github.com/anchore/syft/internal/ui"
 	"github.com/anchore/syft/syft"
 	"github.com/anchore/syft/syft/event"
 	"github.com/anchore/syft/syft/sbom"
 	"github.com/anchore/syft/syft/source"
+	"github.com/google/go-containerregistry/pkg/name"
+	v1 "github.com/google/go-containerregistry/pkg/v1"
 	"github.com/in-toto/in-toto-golang/in_toto"
 	"github.com/pkg/errors"
+	"github.com/sigstore/cosign/cmd/cosign/cli/rekor"
 	"github.com/sigstore/cosign/cmd/cosign/cli/sign"
+	"github.com/sigstore/cosign/pkg/cosign"
 	"github.com/sigstore/cosign/pkg/cosign/attestation"
+	cbundle "github.com/sigstore/cosign/pkg/cosign/bundle"
+	"github.com/sigstore/cosign/pkg/oci/mutate"
+	ociremote "github.com/sigstore/cosign/pkg/oci/remote"
+	"github.com/sigstore/cosign/pkg/oci/static"
+	sigs "github.com/sigstore/cosign/pkg/signature"
+	"github.com/sigstore/cosign/pkg/types"
+	"github.com/sigstore/rekor/pkg/generated/client"
+	"github.com/sigstore/rekor/pkg/generated/models"
 	"github.com/sigstore/sigstore/pkg/signature/dsse"
 	"github.com/wagoodman/go-partybus"
 
@@ -43,7 +57,7 @@ var (
 	intotoJSONDsseType = `application/vnd.in-toto+json`
 )
 
-func Run(ctx context.Context, app *config.Application, args []string) error {
+func Run(ctx context.Context, app *config.Application, ko sign.KeyOpts, args []string) error {
 	// We cannot generate an attestation for more than one output
 	if len(app.Outputs) > 1 {
 		return fmt.Errorf("unable to generate attestation for more than one output")
@@ -59,17 +73,20 @@ func Run(ctx context.Context, app *config.Application, args []string) error {
 	format := syft.FormatByName(app.Outputs[0])
 	predicateType := formatPredicateType(format)
 	if predicateType == "" {
-		return fmt.Errorf("could not produce attestation predicate for given format: %q. Available formats: %+v", options.FormatAliases(format.ID()), options.FormatAliases(allowedAttestFormats...))
+		return fmt.Errorf(
+			"could not produce attestation predicate for given format: %q. Available formats: %+v",
+			options.FormatAliases(format.ID()),
+			options.FormatAliases(allowedAttestFormats...),
+		)
 	}
 
-	passFunc, err := selectPassFunc(app.Attest.Key, app.Attest.Password)
+	if app.Attest.KeyRef != "" {
+		passFunc, err := selectPassFunc(app.Attest.KeyRef, app.Attest.Password)
 		if err != nil {
 			return err
 		}
 
-	ko := sign.KeyOpts{
-		KeyRef:   app.Attest.Key,
-		PassFunc: passFunc,
+		ko.PassFunc = passFunc
 	}
 
 	sv, err := sign.SignerFromKeyOpts(ctx, "", "", ko)
@@ -144,7 +161,7 @@ func execWorker(app *config.Application, sourceInput source.Input, format sbom.F
 			return
 		}
 
-		err = generateAttestation(sbomBytes, src, sv, predicateType)
+		err = generateAttestation(app, sbomBytes, src, sv, predicateType)
 		if err != nil {
 			errs <- err
 			return
@@ -153,7 +170,7 @@ func execWorker(app *config.Application, sourceInput source.Input, format sbom.F
 	return errs
 }
 
-func generateAttestation(predicate []byte, src *source.Source, sv *sign.SignerVerifier, predicateType string) error {
+func generateAttestation(app *config.Application, predicate []byte, src *source.Source, sv *sign.SignerVerifier, predicateType string) error {
 	switch len(src.Image.Metadata.RepoDigests) {
 	case 0:
 		return fmt.Errorf("cannot generate attestation since no repo digests were found; make sure you're passing an OCI registry source for the attest command")
@@ -163,11 +180,22 @@ func generateAttestation(predicate []byte, src *source.Source, sv *sign.SignerVe
 	}
 
 	wrapped := dsse.WrapSigner(sv, intotoJSONDsseType)
+	ref, err := name.ParseReference(src.Metadata.ImageMetadata.UserInput)
+	if err != nil {
+		return err
+	}
+
+	digest, err := ociremote.ResolveDigest(ref)
+	if err != nil {
+		return err
+	}
+
+	h, _ := v1.NewHash(digest.Identifier())
 
 	sh, err := attestation.GenerateStatement(attestation.GenerateOpts{
 		Predicate: bytes.NewBuffer(predicate),
 		Type:      predicateType,
-		Digest:    findValidDigest(src.Image.Metadata.RepoDigests),
+		Digest:    h.Hex,
 	})
 	if err != nil {
 		return err
@@ -183,6 +211,9 @@ func generateAttestation(predicate []byte, src *source.Source, sv *sign.SignerVe
 		return errors.Wrap(err, "unable to sign SBOM")
 	}
 
+	// We want to give the option to not upload the generated attestation
+	// if passed or if the user is using local PKI
+	if app.Attest.NoUpload || app.Attest.KeyRef != "" {
 		bus.Publish(partybus.Event{
 			Type: event.Exit,
 			Value: func() error {
@@ -190,15 +221,95 @@ func generateAttestation(predicate []byte, src *source.Source, sv *sign.SignerVe
 				return err
 			},
 		})
-
 		return nil
+	}
+
+	return uploadAttestation(app, signedPayload, digest, sv)
 }
 
-func findValidDigest(digests []string) string {
-	// since we are only using the OCI repo provider for this source we are safe that this is only 1 value
-	// see https://github.com/anchore/stereoscope/blob/25ebd49a842b5ac0a20c2e2b4b81335b64ad248c/pkg/image/oci/registry_provider.go#L57-L63
-	split := strings.Split(digests[0], "sha256:")
-	return split[1]
+func trackUploadAttestation() (*progress.Stage, *progress.Manual) {
+	stage := &progress.Stage{}
+	prog := &progress.Manual{}
+
+	bus.Publish(partybus.Event{
+		Type: event.UploadAttestation,
+		Value: progress.StagedProgressable(&struct {
+			progress.Stager
+			progress.Progressable
+		}{
+			Stager:       stage,
+			Progressable: prog,
+		}),
+	})
+
+	return stage, prog
+}
+
+// uploads signed SBOM payload to Rekor transparency log along with key information;
+// returns a bundle for attestation annotations
+// rekor bundle includes a signed payload and rekor timestamp;
+// the bundle is then wrapped onto an OCI signed entity and uploaded to
+// the user's image's OCI registry repository as *.att
+func uploadAttestation(app *config.Application, signedPayload []byte, digest name.Digest, sv *sign.SignerVerifier) error {
+	// add application/vnd.dsse.envelope.v1+json as media type for other applications to decode attestation
+	opts := []static.Option{static.WithLayerMediaType(types.DssePayloadType)}
+	if sv.Cert != nil {
+		opts = append(opts, static.WithCertChain(sv.Cert, sv.Chain))
+	}
+
+	stage, prog := trackUploadAttestation()
+	defer prog.SetCompleted() // just in case we return early
+
+	prog.Total = 2
+	stage.Current = "uploading signing information to transparency log"
+
+	// uploads payload to Rekor transparency log along with key information;
+	// returns bundle for attesation annotations
+	// rekor bundle includes a signed payload and rekor timestamp;
+	// the bundle is then wrapped onto an OCI signed entity and uploaded to
+	// the user's image's OCI registry repository as *.att
+	bundle, err := uploadToTlog(context.TODO(), sv, app.Attest.RekorURL, func(r *client.Rekor, b []byte) (*models.LogEntryAnon, error) {
+		return cosign.TLogUploadInTotoAttestation(context.TODO(), r, signedPayload, b)
+	})
+	if err != nil {
+		return err
+	}
+
+	prog.N = 1
+	stage.Current = "uploading attestation to OCI registry"
+
+	// add bundle OCI attestation that is uploaded to
+	opts = append(opts, static.WithBundle(bundle))
+	sig, err := static.NewAttestation(signedPayload, opts...)
+	if err != nil {
+		return err
+	}
+
+	se, err := ociremote.SignedEntity(digest)
+	if err != nil {
+		return err
+	}
+
+	newSE, err := mutate.AttachAttestationToEntity(se, sig)
+	if err != nil {
+		return err
+	}
+
+	// Publish the attestations associated with this entity
+	err = ociremote.WriteAttestations(digest.Repository, newSE)
+	if err != nil {
+		return err
+	}
+
+	prog.SetCompleted()
+
+	bus.Publish(partybus.Event{
+		Type: event.Exit,
+		Value: func() error {
+			return nil
+		},
+	})
+	return nil
 }
 
 func formatPredicateType(format sbom.Format) string {
@@ -214,3 +325,33 @@ func formatPredicateType(format sbom.Format) string {
 		return ""
 	}
 }
+
+type tlogUploadFn func(*client.Rekor, []byte) (*models.LogEntryAnon, error)
+
+func uploadToTlog(ctx context.Context, sv *sign.SignerVerifier, rekorURL string, upload tlogUploadFn) (*cbundle.RekorBundle, error) {
+	var rekorBytes []byte
+	// Upload the cert or the public key, depending on what we have
+	if sv.Cert != nil {
+		rekorBytes = sv.Cert
+	} else {
+		pemBytes, err := sigs.PublicKeyPem(sv, signatureoptions.WithContext(ctx))
+		if err != nil {
+			return nil, err
+		}
+		rekorBytes = pemBytes
+	}
+
+	rekorClient, err := rekor.NewClient(rekorURL)
+	if err != nil {
+		return nil, err
+	}
+	entry, err := upload(rekorClient, rekorBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	if entry.LogIndex != nil {
+		log.Debugf("transparency log entry created with index: %v", *entry.LogIndex)
+	}
+	return cbundle.EntryToBundle(entry), nil
+}

cmd/syft/cli/options/attest.go

@@ -6,17 +6,50 @@ import (
 	"github.com/spf13/viper"
 )
 
+const defaultKeyFileName = "cosign.key"
+
 type AttestOptions struct {
 	Key       string
+	Cert      string
+	CertChain string
+	NoUpload  bool
+	Force     bool
+	Recursive bool
+
+	Rekor  RekorOptions
+	Fulcio FulcioOptions
+	OIDC   OIDCOptions
 }
 
 var _ Interface = (*AttestOptions)(nil)
 
 func (o *AttestOptions) AddFlags(cmd *cobra.Command, v *viper.Viper) error {
-	cmd.PersistentFlags().StringVarP(&o.Key, "key", "", "cosign.key",
+	if err := o.Rekor.AddFlags(cmd, v); err != nil {
+		return err
+	}
+	if err := o.Fulcio.AddFlags(cmd, v); err != nil {
+		return err
+	}
+	if err := o.OIDC.AddFlags(cmd, v); err != nil {
+		return err
+	}
+
+	cmd.Flags().StringVarP(&o.Key, "key", "", defaultKeyFileName,
 		"path to the private key file to use for attestation")
 
-	return bindAttestationConfigOptions(cmd.PersistentFlags(), v)
+	cmd.Flags().StringVarP(&o.Cert, "cert", "", "",
+		"path to the x.509 certificate in PEM format to include in the OCI Signature")
+
+	cmd.Flags().BoolVarP(&o.NoUpload, "no-upload", "", false,
+		"do not upload the generated attestation")
+
+	cmd.Flags().BoolVarP(&o.Force, "force", "", false,
+		"skip warnings and confirmations")
+
+	cmd.Flags().BoolVarP(&o.Recursive, "recursive", "", false,
+		"if a multi-arch image is specified, additionally sign each discrete image")
+
+	return bindAttestationConfigOptions(cmd.Flags(), v)
 }
 
 func bindAttestationConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
@@ -24,5 +57,21 @@ func bindAttestationConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
 		return err
 	}
 
+	if err := v.BindPFlag("attest.cert", flags.Lookup("cert")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.no-upload", flags.Lookup("no-upload")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.force", flags.Lookup("force")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.recursive", flags.Lookup("recursive")); err != nil {
+		return err
+	}
+
 	return nil
 }

cmd/syft/cli/options/fulcio.go

@@ -0,0 +1,48 @@
+package options
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+const defaultFulcioURL = "https://fulcio.sigstore.dev"
+
+// FulcioOptions is the wrapper for Fulcio related options.
+type FulcioOptions struct {
+	URL                      string
+	IdentityToken            string
+	InsecureSkipFulcioVerify bool
+}
+
+var _ Interface = (*FulcioOptions)(nil)
+
+// AddFlags implements Interface
+func (o *FulcioOptions) AddFlags(cmd *cobra.Command, v *viper.Viper) error {
+	// TODO: change this back to api.SigstorePublicServerURL after the v1 migration is complete.
+	cmd.Flags().StringVar(&o.URL, "fulcio-url", defaultFulcioURL,
+		"address of sigstore PKI server")
+
+	cmd.Flags().StringVar(&o.IdentityToken, "identity-token", "",
+		"identity token to use for certificate from fulcio")
+
+	cmd.Flags().BoolVar(&o.InsecureSkipFulcioVerify, "insecure-skip-verify", false,
+		"skip verifying fulcio certificat and the SCT (Signed Certificate Timestamp) (this should only be used for testing).")
+	return bindFulcioConfigOptions(cmd.Flags(), v)
+}
+
+func bindFulcioConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
+	if err := v.BindPFlag("attest.fulcio-url", flags.Lookup("fulcio-url")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.fulcio-identity-token", flags.Lookup("identity-token")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.insecure-skip-verify", flags.Lookup("insecure-skip-verify")); err != nil {
+		return err
+	}
+
+	return nil
+}

cmd/syft/cli/options/oidc.go

@@ -0,0 +1,48 @@
+package options
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+const DefaultOIDCIssuerURL = "https://oauth2.sigstore.dev/auth"
+
+// OIDCOptions is the wrapper for OIDC related options.
+type OIDCOptions struct {
+	Issuer      string
+	ClientID    string
+	RedirectURL string
+}
+
+var _ Interface = (*OIDCOptions)(nil)
+
+// AddFlags implements Interface
+func (o *OIDCOptions) AddFlags(cmd *cobra.Command, v *viper.Viper) error {
+	cmd.Flags().StringVar(&o.Issuer, "oidc-issuer", DefaultOIDCIssuerURL,
+		"OIDC provider to be used to issue ID token")
+
+	cmd.Flags().StringVar(&o.ClientID, "oidc-client-id", "sigstore",
+		"OIDC client ID for application")
+
+	cmd.Flags().StringVar(&o.RedirectURL, "oidc-redirect-url", "",
+		"OIDC redirect URL (Optional)")
+
+	return bindOIDCConfigOptions(cmd.Flags(), v)
+}
+
+func bindOIDCConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
+	if err := v.BindPFlag("attest.oidc-issuer", flags.Lookup("oidc-issuer")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.oidc-client-id", flags.Lookup("oidc-client-id")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.oidc-redirect-url", flags.Lookup("oidc-redirect-url")); err != nil {
+		return err
+	}
+
+	return nil
+}

cmd/syft/cli/options/rekor.go

@@ -0,0 +1,32 @@
+package options
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+const DefaultRekorURL = "https://rekor.sigstore.dev"
+
+// RekorOptions is the wrapper for Rekor related options.
+type RekorOptions struct {
+	URL string
+}
+
+var _ Interface = (*RekorOptions)(nil)
+
+// AddFlags implements Interface
+func (o *RekorOptions) AddFlags(cmd *cobra.Command, v *viper.Viper) error {
+	cmd.Flags().StringVar(&o.URL, "rekor-url", DefaultRekorURL,
+		"address of rekor STL server")
+	return bindRekorConfigOptions(cmd.Flags(), v)
+}
+
+func bindRekorConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
+	// TODO: config re-design
+	if err := v.BindPFlag("attest.rekor-url", flags.Lookup("rekor-url")); err != nil {
+		return err
+	}
+
+	return nil
+}

go.mod

@@ -58,6 +58,7 @@ require (
 	github.com/docker/docker v20.10.12+incompatible
 	github.com/in-toto/in-toto-golang v0.3.4-0.20211211042327-af1f9fb822bf
 	github.com/sigstore/cosign v1.7.2
+	github.com/sigstore/rekor v0.4.1-0.20220114213500-23f583409af3
 	github.com/sigstore/sigstore v1.2.1-0.20220401110139-0e610e39782f
 )
 
@@ -209,7 +210,6 @@ require (
 	github.com/segmentio/ksuid v1.0.4 // indirect
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
 	github.com/sigstore/fulcio v0.1.2-0.20220114150912-86a2036f9bc7 // indirect
-	github.com/sigstore/rekor v0.4.1-0.20220114213500-23f583409af3 // indirect
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
 	github.com/soheilhy/cmux v0.1.5 // indirect
 	github.com/spiffe/go-spiffe/v2 v2.0.0 // indirect
@@ -292,7 +292,7 @@ require (
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/go-containerregistry v0.8.1-0.20220209165246-a44adc326839 // indirect
+	github.com/google/go-containerregistry v0.8.1-0.20220209165246-a44adc326839
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/iancoleman/orderedmap v0.0.0-20190318233801-ac98e3ecb4b0 // indirect

internal/config/attest.go

@@ -5,22 +5,35 @@ import (
 	"os"
 
 	"github.com/mitchellh/go-homedir"
+	"github.com/sigstore/cosign/cmd/cosign/cli/options"
 	"github.com/spf13/viper"
 )
 
+// IMPORTANT: do not show the password in any YAML/JSON output (sensitive information)
 type attest struct {
-	Key string `yaml:"key" json:"key" mapstructure:"key"` // same as --key, file path to the private key
-	// IMPORTANT: do not show the password in any YAML/JSON output (sensitive information)
+	KeyRef                   string `yaml:"key" json:"key" mapstructure:"key"` // same as --key, file path to the private key
+	Cert                     string `yaml:"cert" json:"cert" mapstructure:"cert"`
+	NoUpload                 bool   `yaml:"no_upload" json:"noUpload" mapstructure:"no_upload"`
+	Force                    bool   `yaml:"force" json:"force" mapstructure:"force"`
+	Recursive                bool   `yaml:"recursive" json:"recursive" mapstructure:"recursive"`
+	Replace                  bool   `yaml:"replace" json:"replace" mapstructure:"replace"`
 	Password                 string `yaml:"-" json:"-" mapstructure:"password"` // password for the private key
+	FulcioURL                string `yaml:"fulcio_url" json:"fulcioUrl" mapstructure:"fulcio_url"`
+	FulcioIdentityToken      string `yaml:"fulcio_identity_token" json:"fulcio_identity_token" mapstructure:"fulcio_identity_token"`
+	InsecureSkipFulcioVerify bool   `yaml:"insecure_skip_verify" json:"insecure_skip_verify" mapstructure:"insecure_skip_verify"`
+	RekorURL                 string `yaml:"rekor_url" json:"rekorUrl" mapstructure:"rekor_url"`
+	OIDCIssuer               string `yaml:"oidc_issuer" json:"oidcIssuer" mapstructure:"oidc_issuer"`
+	OIDCClientID             string `yaml:"oidc_client_id" json:"oidcClientId" mapstructure:"oidc_client_id"`
+	OIDCRedirectURL          string `yaml:"oidc_redirect_url" json:"OIDCRedirectURL" mapstructure:"oidc_redirect_url"`
 }
 
 func (cfg *attest) parseConfigValues() error {
-	if cfg.Key != "" {
-		expandedPath, err := homedir.Expand(cfg.Key)
+	if cfg.KeyRef != "" {
+		expandedPath, err := homedir.Expand(cfg.KeyRef)
 		if err != nil {
-			return fmt.Errorf("unable to expand key path=%q: %w", cfg.Key, err)
+			return fmt.Errorf("unable to expand key path=%q: %w", cfg.KeyRef, err)
 		}
-		cfg.Key = expandedPath
+		cfg.KeyRef = expandedPath
 	}
 
 	if cfg.Password == "" {
@@ -34,5 +47,10 @@ func (cfg *attest) parseConfigValues() error {
 }
 
 func (cfg attest) loadDefaultValues(v *viper.Viper) {
+	v.SetDefault("attest.key", "")
 	v.SetDefault("attest.password", "")
+	v.SetDefault("attest.fulcio_url", options.DefaultFulcioURL)
+	v.SetDefault("attest.rekor_url", options.DefaultRekorURL)
+	v.SetDefault("attest.oidc_issuer", options.DefaultOIDCIssuerURL)
+	v.SetDefault("attest.oidc_client_id", "sigstore")
 }

internal/formats/spdx22tagvalue/test-fixtures/snapshot/TestSPDXJSONSPDXIDs.golden

@@ -2,11 +2,11 @@ SPDXVersion: SPDX-2.2
 DataLicense: CC0-1.0
 SPDXID: SPDXRef-DOCUMENT
 DocumentName: .
-DocumentNamespace: https://anchore.com/syft/dir/644e30b7-5a31-4d0b-a903-b96c757921c2
+DocumentNamespace: https://anchore.com/syft/dir/8fbb3714-785d-4e3e-95cf-44a258bc65b0
 LicenseListVersion: 3.16
 Creator: Organization: Anchore, Inc
 Creator: Tool: syft-[not provided]
-Created: 2022-04-19T15:10:19Z
+Created: 2022-05-02T15:27:05Z
 
 ##### Package: @at-sign
 

syft/event/event.go

@@ -31,4 +31,7 @@ const (
 
 	// ImportStarted is a partybus event that occurs when an SBOM upload process has begun
 	ImportStarted partybus.EventType = "syft-import-started-event"
+
+	// UploadAttestation is a partybus event that occurs when syft uploads an attestation to an OCI registry (+ any transparency log)
+	UploadAttestation partybus.EventType = "syft-upload-attestation"
 )

syft/event/parsers/parsers.go

@@ -151,3 +151,16 @@ func ParseImportStarted(e partybus.Event) (string, progress.StagedProgressable,
 
 	return host, prog, nil
 }
+
+func ParseUploadAttestation(e partybus.Event) (progress.StagedProgressable, error) {
+	if err := checkEventType(e.Type, event.UploadAttestation); err != nil {
+		return nil, err
+	}
+
+	prog, ok := e.Value.(progress.StagedProgressable)
+	if !ok {
+		return nil, newPayloadErr(e.Type, "Value", e.Value)
+	}
+
+	return prog, nil
+}

test/cli/attest_cmd_test.go

@@ -26,7 +26,7 @@ func TestAttestCmd(t *testing.T) {
 		},
 		{
 			name: "can encode syft.json as the predicate given a password",
-			args: []string{"attest", "-o", "json", img},
+			args: []string{"attest", "-o", "json", "--key", "cosign.key", img},
 			assertions: []traitAssertion{
 				assertSuccessfulReturnCode,
 			},
@@ -34,7 +34,7 @@ func TestAttestCmd(t *testing.T) {
 		},
 		{
 			name: "can encode syft.json as the predicate given a blank password",
-			args: []string{"attest", "-o", "json", img},
+			args: []string{"attest", "-o", "json", "--key", "cosign.key", img},
 			assertions: []traitAssertion{
 				assertSuccessfulReturnCode,
 			},

test/cli/cosign_test.go

@@ -59,9 +59,11 @@ func TestCosignWorkflow(t *testing.T) {
 				"attest",
 				"-o",
 				"json",
+				"--key",
+				"cosign.key",
 				img,
 			},
-			// cosign attach attestation --attestation image_latest_sbom_attestation.json caphill4/attest:latest
+			// cosign attach attestation
 			cosignAttachArgs: []string{
 				"attach",
 				"attestation",
@@ -69,7 +71,7 @@ func TestCosignWorkflow(t *testing.T) {
 				attestationFile,
 				img,
 			},
-			// cosign verify-attestation -key cosign.pub caphill4/attest:latest
+			// cosign verify-attestation
 			cosignVerifyArgs: []string{
 				"verify-attestation",
 				"-key",

test/cli/test-fixtures/attestation/Dockerfile.ctfe_init

@@ -0,0 +1,10 @@
+FROM golang:1.17.8@sha256:c7c94588b6445f5254fbc34df941afa10de04706deb330e62831740c9f0f2030 AS builder
+
+WORKDIR /root/
+
+RUN go install github.com/google/trillian/cmd/createtree@v1.3.10
+ADD ./config/logid.sh /root/
+ADD ./config/ctfe /root/ctfe
+RUN chmod +x /root/logid.sh
+
+CMD /root/logid.sh

test/cli/test-fixtures/attestation/config/config.json

@@ -0,0 +1,9 @@
+{
+  "OIDCIssuers": {
+	"http://dex-idp:8888/auth": {
+      "IssuerURL": "http://dex-idp:8888/auth",
+      "ClientID": "fulcio",
+      "Type": "email"
+    }
+  }
+}

test/cli/test-fixtures/attestation/config/ctfe/ct_server.cfg

@@ -0,0 +1,11 @@
+config {
+	log_id: %LOGID%
+	prefix: "test"
+	roots_pem_file: "/etc/config/root.pem"
+	private_key: {
+		[type.googleapis.com/keyspb.PEMKeyFile] {
+			path: "/etc/config/privkey.pem"
+			password: "foobar"
+		}
+	}
+}

test/cli/test-fixtures/attestation/config/ctfe/privkey.pem

@@ -0,0 +1,8 @@
+-----BEGIN EC PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: DES-CBC,05BAAA9143C46320
+
+AttbquLclNy7ZEnlDFpReZvV2PZKuv89YMWqDvGGtnBVw+3eXYIa54Xli1CyXEPn
+qNGvibjIxj+Q19+VhA3n42SE2fHyULHKPZHebSL5qcVvZTqmbtAe/dZNH1SiGG2f
+bWauIw0oeHhXW5i9isxrLggPMRmPA65Ii3W7gyWFmjE=
+-----END EC PRIVATE KEY-----

test/cli/test-fixtures/attestation/config/ctfe/pubkey.pem

@@ -0,0 +1,4 @@
+-----BEGIN PUBLIC KEY-----
+MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEbbQiLx6GKy6ivhc11wJGbQjc2VX/
+mnuk5d670MTXR3p+LIAcxd5MhqIHpLmyYJ5mDKLEoZ/pC0nPuje3JueBcA==
+-----END PUBLIC KEY-----

test/cli/test-fixtures/attestation/config/dex/docker-compose-config.yaml

@@ -0,0 +1,48 @@
+#
+# Copyright 2021 The Sigstore Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+issuer: http://dex-idp:8888/auth
+
+storage:
+  type: memory
+
+web:
+  http: dex-idp:8888
+
+frontend:
+  issuer: Fulcio in Docker Compose
+
+expiry:
+  signingKeys: "24h"
+  idTokens: "1m"
+  authRequests: "24h"
+
+oauth2:
+  responseTypes: [ "code" ]
+  alwaysShowLoginScreen: false
+  skipApprovalScreen: true
+
+connectors:
+- type: mockCallback
+  id: approved
+  name: AlwaysApprovesOIDCProvider
+
+staticClients:
+  - id: fulcio
+    public: true
+    name: 'Fulcio in Docker Compose'
+
+# Dex's issuer URL + "/callback"
+redirectURI: http://dex-idp:8888/auth/callback

test/cli/test-fixtures/attestation/config/logid.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+#
+# Copyright 2021 The Sigstore Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+function get_log_id() {
+	curl -s --retry-connrefused --retry 10 http://trillian-log-server:8095/metrics |grep "^quota_acquired_tokens{spec=\"trees"|head -1|awk ' { print $1 } '|sed -e 's/[^0-9]*//g' > /tmp/logid
+}
+
+function get_ephemeral_ca() {
+	curl -s --retry-connrefused --retry 10 http://fulcio-server:5555/api/v1/rootCert > /etc/config/root.pem
+}
+
+function create_log () {
+	/go/bin/createtree -admin_server trillian-log-server:8096 > /tmp/logid
+	echo -n "Created log ID " && cat /tmp/logid
+}
+
+function update_config() {
+	cat /root/ctfe/ct_server.cfg | sed -e "s/%LOGID%/"`cat /tmp/logid`"/g" > /etc/config/ct_server.cfg
+	cp /root/ctfe/*.pem /etc/config/
+}
+
+# check to see if log id exists; if so, use that
+echo -n "Checking for existing configuration..."
+echo "Checking for preexisting logs..."
+get_log_id
+# else create one
+if ! [[ -s /tmp/logid ]]; then
+	echo "No log found; let's create one..."
+	create_log
+fi
+echo "Updating config with current log"
+update_config
+
+configid=`cat /etc/config/ct_server.cfg|grep log_id|awk ' { print $2 } '`
+echo "Exisiting configuration uses log ID $configid, exiting"
+
+echo "Grabing fulcio root pem file"
+get_ephemeral_ca
+
+echo "Finished ct_server configuration"

test/cli/test-fixtures/attestation/docker-compose-config.yaml

@@ -0,0 +1,48 @@
+#
+# Copyright 2021 The Sigstore Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+issuer: http://dex-idp:8888/auth
+
+storage:
+  type: memory
+
+web:
+  http: 0.0.0.0:8888
+
+frontend:
+  issuer: Fulcio in Docker Compose
+
+expiry:
+  signingKeys: "24h"
+  idTokens: "1m"
+  authRequests: "24h"
+
+oauth2:
+  responseTypes: [ "code" ]
+  alwaysShowLoginScreen: true
+  skipApprovalScreen: true
+
+connectors:
+- type: mockCallback
+  id: https://any.valid.url/
+  name: AlwaysApprovesOIDCProvider
+
+staticClients:
+  - id: fulcio
+    public: true
+    name: 'Fulcio in Docker Compose'
+
+# Dex's issuer URL + "/callback"
+redirectURI: http://dex-idp:8888/auth/callback

test/cli/test-fixtures/attestation/docker-compose.yaml

@@ -0,0 +1,116 @@
+version: '3.2'
+services:
+  fulcio-server:
+    image: fulcio_fulcio-server
+    command: [
+      "fulcio-server",
+      "serve",
+      "--host=0.0.0.0",
+      "--port=5555",
+      "--ca=ephemeralca",
+      "--ct-log-url=http://ct_server:6962/test",
+      ]
+    restart: always # keep the server running
+    ports:
+      - "5555:5555"
+    volumes:
+      - ./config/config.json:/etc/fulcio-config/config.json:z
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:5555/ping"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+      start_period: 5s
+    depends_on:
+      - dex-idp
+  mysql:
+    image: gcr.io/trillian-opensource-ci/db_server:3c8193ebb2d7fedb44d18e9c810d0d2e4dbb7e4d
+    environment:
+      - MYSQL_ROOT_PASSWORD=password
+      - MYSQL_DATABASE=test
+      - MYSQL_USER=test
+      - MYSQL_PASSWORD=password
+    restart: always # keep the MySQL server running
+    healthcheck:
+      test: ["CMD", "/etc/init.d/mysql", "status"]
+      interval: 30s
+      timeout: 3s
+      retries: 3
+      start_period: 10s
+  ctfe_init:
+    build:
+      context: .
+      dockerfile: Dockerfile.ctfe_init
+    depends_on:
+      - trillian-log-server
+      - fulcio-server
+    volumes:
+      - ctfeConfig:/etc/config/:rw
+  ct_server:
+    image: gcr.io/trillian-opensource-ci/ctfe
+    volumes:
+      - ctfeConfig:/etc/config/:rw
+    command: [
+        "--log_config" ,"/etc/config/ct_server.cfg",
+        "--log_rpc_server", "trillian-log-server:8096",
+        "--http_endpoint", "0.0.0.0:6962",
+        "--alsologtostderr",
+    ]
+    restart: always # retry while ctfe_init is running
+    depends_on:
+      - trillian-log-server
+      - trillian-log-signer
+      - ctfe_init
+    ports:
+      - "6962:6962"
+  dex-idp:
+    image: dexidp/dex:v2.30.0
+    user: root
+    command: [
+      "dex",
+      "serve",
+      "/etc/config/docker-compose-config.yaml",
+      ]
+    restart: always # keep the server running
+    ports:
+      - "8888:8888"
+    volumes:
+      - ./config/dex:/etc/config/:ro
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8888/auth/healthz"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+      start_period: 5s
+  trillian-log-server:
+    image: gcr.io/trillian-opensource-ci/log_server
+    command: [
+      "--storage_system=mysql",
+      "--mysql_uri=test:password@tcp(mysql:3306)/test",
+      "--rpc_endpoint=0.0.0.0:8096",
+      "--http_endpoint=0.0.0.0:8095",
+      "--alsologtostderr",
+    ]
+    restart: always # retry while mysql is starting up
+    ports:
+      - "8096:8096"
+      - "8095:8095"
+    depends_on:
+      - mysql
+  trillian-log-signer:
+    image: gcr.io/trillian-opensource-ci/log_signer
+    command: [
+      "--storage_system=mysql",
+      "--mysql_uri=test:password@tcp(mysql:3306)/test",
+      "--rpc_endpoint=0.0.0.0:8095",
+      "--http_endpoint=0.0.0.0:8097",
+      "--force_master",
+      "--alsologtostderr",
+    ]
+    restart: always # retry while mysql is starting up
+    ports:
+      - "8097:8097"
+    depends_on:
+      - mysql
+volumes:
+  ctfeConfig: {}

ui/event_handlers.go

@@ -226,6 +226,48 @@ func FetchImageHandler(ctx context.Context, fr *frame.Frame, event partybus.Even
 	return err
 }
 
+func UploadAttestationHandler(ctx context.Context, fr *frame.Frame, event partybus.Event, wg *sync.WaitGroup) error {
+	prog, err := syftEventParsers.ParseUploadAttestation(event)
+	if err != nil {
+		return fmt.Errorf("bad %s event: %w", event.Type, err)
+	}
+
+	line, err := fr.Append()
+	if err != nil {
+		return err
+	}
+	wg.Add(1)
+
+	formatter, spinner := startProcess()
+	stream := progress.Stream(ctx, prog, interval)
+	title := tileFormat.Sprint("Uploading attestation")
+
+	formatFn := func(p progress.Progress) {
+		progStr, err := formatter.Format(p)
+		spin := color.Magenta.Sprint(spinner.Next())
+		if err != nil {
+			_, _ = io.WriteString(line, fmt.Sprintf("Error: %+v", err))
+		} else {
+			auxInfo := auxInfoFormat.Sprintf("[%s]", prog.Stage())
+			_, _ = io.WriteString(line, fmt.Sprintf(statusTitleTemplate+"%s %s", spin, title, progStr, auxInfo))
+		}
+	}
+
+	go func() {
+		defer wg.Done()
+
+		formatFn(progress.Progress{})
+		for p := range stream {
+			formatFn(p)
+		}
+
+		spin := color.Green.Sprint(completedStatus)
+		title = tileFormat.Sprint("Uploaded attestation")
+		_, _ = io.WriteString(line, fmt.Sprintf(statusTitleTemplate, spin, title))
+	}()
+	return err
+}
+
 // ReadImageHandler periodically writes a the image read/parse/build-tree status in the form of a progress bar.
 func ReadImageHandler(ctx context.Context, fr *frame.Frame, event partybus.Event, wg *sync.WaitGroup) error {
 	_, prog, err := stereoEventParsers.ParseReadImage(event)
@@ -355,8 +397,8 @@ func SecretsCatalogerStartedHandler(ctx context.Context, fr *frame.Frame, event
 	return err
 }
 
+//nolint:dupl
 // FileMetadataCatalogerStartedHandler shows the intermittent secrets searching progress.
-// nolint:dupl
 func FileMetadataCatalogerStartedHandler(ctx context.Context, fr *frame.Frame, event partybus.Event, wg *sync.WaitGroup) error {
 	prog, err := syftEventParsers.ParseFileMetadataCatalogingStarted(event)
 	if err != nil {

ui/handler.go

@@ -27,7 +27,16 @@ func NewHandler() *Handler {
 // RespondsTo indicates if the handler is capable of handling the given event.
 func (r *Handler) RespondsTo(event partybus.Event) bool {
 	switch event.Type {
-	case stereoscopeEvent.PullDockerImage, stereoscopeEvent.ReadImage, stereoscopeEvent.FetchImage, syftEvent.PackageCatalogerStarted, syftEvent.SecretsCatalogerStarted, syftEvent.FileDigestsCatalogerStarted, syftEvent.FileMetadataCatalogerStarted, syftEvent.FileIndexingStarted, syftEvent.ImportStarted:
+	case stereoscopeEvent.PullDockerImage,
+		stereoscopeEvent.ReadImage,
+		stereoscopeEvent.FetchImage,
+		syftEvent.UploadAttestation,
+		syftEvent.PackageCatalogerStarted,
+		syftEvent.SecretsCatalogerStarted,
+		syftEvent.FileDigestsCatalogerStarted,
+		syftEvent.FileMetadataCatalogerStarted,
+		syftEvent.FileIndexingStarted,
+		syftEvent.ImportStarted:
 		return true
 	default:
 		return false
@@ -46,6 +55,9 @@ func (r *Handler) Handle(ctx context.Context, fr *frame.Frame, event partybus.Ev
 	case stereoscopeEvent.FetchImage:
 		return FetchImageHandler(ctx, fr, event, wg)
 
+	case syftEvent.UploadAttestation:
+		return UploadAttestationHandler(ctx, fr, event, wg)
+
 	case syftEvent.PackageCatalogerStarted:
 		return PackageCatalogerStartedHandler(ctx, fr, event, wg)