chore(deps): update module github.com/sigstore/cosign/v2 to v2.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/sigstore/cosign/v2	v2.4.0 → v2.6.1

---

Release Notes

sigstore/cosign (github.com/sigstore/cosign/v2)

v2.6.1

Compare Source

Bug Fixes

• Partially populate the output of cosign verify when working with new bundles (#​4416)
• Bump sigstore-go, move conformance back to tagged release (#​4426)

v2.6.0

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v2.6.0 introduces a number of new features, including:

• Signing an in-toto statement rather than Cosign constructing one from a predicate, along with verifying a statement's subject using a digest and digest algorithm rather than providing a file reference (#​4306)
• Uploading a signature and its verification material (a "bundle") as an OCI Image 1.1 referring artifact, completing #​3927 (#​4316)
• Providing service URLs for signing and attesting using a SigningConfig. Note that this is required when using a Rekor v2 instance (#​4319)

Example generation and verification of a signed in-toto statement:

cosign attest-blob --new-bundle-format=true --bundle="digest-key-test.sigstore.json" --key="cosign.key" --statement="../sigstore-go/examples/sigstore-go-signing/intoto.txt"
cosign verify-blob-attestation --bundle="digest-key-test.sigstore.json" --key=cosign.pub --type=unused --digest="b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9" --digestAlg="sha256"

Example container signing and verification using the new bundle format and referring artifacts:

cosign sign --new-bundle-format=true ghcr.io/user/alpine@sha256:a19367999603840546b8612572e338ec076c6d1f2fec61760a9e11410f546733
cosign verify --new-bundle-format=true ghcr.io/user/alpine@sha256:a19367999603840546b8612572e338ec076c6d1f2fec61760a9e11410f546733

Example usage of a signing config provided by the public good instance's TUF repository:

cosign sign-blob --use-signing-config --bundle sigstore.json README.md
cosign verify-blob --new-bundle-format --bundle sigstore.json --certificate-identity $EMAIL --certificate-oidc-issuer $ISSUER --use-signed-timestamps README.md

v2.6.0 leverages sigstore-go's signing and verification APIs gated behind these new flags. In an upcoming major release, we will be
updating Cosign to default to producing and consuming bundles to align with all other Sigstore SDKs.

Features

• Add to attest-blob the ability to supply a complete in-toto statement, and add to verify-blob-attestation the ability to verify with just a digest (#​4306)
• Have cosign sign support bundle format (#​4316)
• Add support for SigningConfig for sign-blob/attest-blob, support Rekor v2 (#​4319)
• Add support for SigningConfig in sign/attest (#​4371)
• Support self-managed keys when signing with sigstore-go (#​4368)
• Don't require timestamps when verifying with a key (#​4337)
• Don't load content from TUF if trusted root path is specified (#​4347)
• Add a terminal spinner while signing with sigstore-go (#​4402)
• Require exclusively a SigningConfig or service URLs when signing (#​4403)
• Remove SHA256 assumption in sign-blob/verify-blob (#​4050)
• Bump sigstore-go, support alternative hash algorithms with keys (#​4386)

Breaking API Changes

• sign.SignerFromKeyOpts no longer generates a key. Instead, it returns whether or not the client needs to generate a key, and if so, clients
  should call sign.KeylessSigner. This allows clients to more easily manage key generation.

Bug Fixes

• Verify subject with bundle only when checking claims (#​4320)
• Fixes to cosign sign / verify for the new bundle format (#​4346)

v2.5.3

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Features

• Add signing-config create command (#​4280)
• Allow multiple services to be specified for trusted-root create (#​4285)
• feat: Add OCI 1.1+ experimental support to tree (#​4205)
• Add validity period end for trusted-root create (#​4271)

Bug Fixes

• Fix cert verification logic for trusted-root/SCTs (#​4294)
• force when copying the latest image to overwrite (#​4298)
• avoid double-loading trustedroot from file (#​4264)

v2.5.2

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Bug Fixes

• Do not load trusted root when CT env key is set

Documentation

• docs: improve doc for --no-upload option (#​4206)

v2.5.1

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Features

• Add Rekor v2 support for trusted-root create (#​4242)
• Add baseUrl and Uri to trusted-root create command
• Upgrade to TUF v2 client with trusted root
• Don't verify SCT for a private PKI cert (#​4225)
• Bump TSA library to relax EKU chain validation rules (#​4219)

Bug Fixes

• Bump sigstore-go to pick up log index=0 fix (#​4162)
• remove unused recursive flag on attest command (#​4187)

Docs

• Fix indentation in verify-blob cmd examples (#​4160)

Releases

• ensure we copy the latest tags on each release (#​4157)

Contributors

• arthurus-rex
• Babak K. Shandiz
• Bob Callaway
• Carlos Tadeu Panato Junior
• Colleen Murphy
• Dmitry Savintsev
• Emmanuel Ferdman
• Hayden B
• Ville Skyttä

v2.5.0

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v2.5.0 includes an implementation of the new bundle specification,
attesting and verifying OCI image attestations uploaded as OCI artifacts.
This feature is currently gated behind the --new-bundle-format flag
when running cosign attest.

Features

• Add support for new bundle specification for attesting/verifying OCI image attestations (#​3889)
• Feat/non filename completions (#​4115)
• Add TSA certificate related flags and fields for cosign attest (#​4079)

Fixes

• cmd/cosign/cli: fix typo in ignoreTLogMessage (#​4111)
• Fix replace with compliant image mediatype (#​4077)

Contributors

• Bob Callaway
• Carlos Tadeu Panato Junior
• Cody Soyland
• Dmitry Savintsev
• Hayden B
• Ramon Petgrave
• Riccardo Schirone
• Stef Graces
• Ville Skyttä

v2.4.3

Compare Source

Features

• Bump sigstore/sigstore to support KMS plugins (#​4073)
• Enable fetching signatures without remote get. (#​4047)
• Feat/file flag completion improvements (#​4028)
• Update builder to use go1.23.6 (#​4052)

Bug Fixes

• fix parsing error in --only for cosign copy (#​4049)

Cleanup

• Refactor verifyNewBundle into library function (#​4013)
• fix comment typo and imports order (#​4061)
• sync comment with parameter name in function signature (#​4063)
• sort properly Go imports (#​4071)

Contributors

• Bob Callaway
• Carlos Tadeu Panato Junior
• Cody Soyland
• Dmitry Savintsev
• Hayden B
• Tomasz Janiszewski
• Ville Skyttä

v2.4.2

Compare Source

Features

• Updated open-policy-agent to 1.1.0 library (#​4036)
  • Note that only Rego v0 policies are supported at this time
• Add UseSignedTimestamps to CheckOpts, refactor TSA options (#​4006)
• Add support for verifying root checksum in cosign initialize (#​3953)
• Detect if user supplied a valid protobuf bundle (#​3931)
• Add a log message if user doesn't provide --trusted-root (#​3933)
• Support mTLS towards container registry (#​3922)
• Add bundle create helper command (#​3901)
• Add trusted-root create helper command (#​3876)

Bug Fixes

• fix: set tls config while retaining other fields from default http transport (#​4007)
• policy fuzzer: ignore known panics (#​3993)
• Fix for multiple WithRemote options (#​3982)
• Add nightly conformance test workflow (#​3979)
• Fix copy --only for signatures + update/align docs (#​3904)

Documentation

• Remove usage.md from spec, point to client spec (#​3918)
• move reference from gcr to ghcr (#​3897)

Contributors

• AdamKorcz
• Aditya Sirish
• Bob Callaway
• Carlos Tadeu Panato Junior
• Cody Soyland
• Colleen Murphy
• Hayden B
• Jussi Kukkonen
• Marco Franssen
• Nianyu Shen
• Slavek Kabrda
• Søren Juul
• Warren Hodgkinson
• Zach Steindler

v2.4.1

Compare Source

v2.4.1 largely contains bug fixes and updates dependencies.

Features

• Added fuzzing coverage to multiple packages

Bug Fixes

• Fix bug in attest-blob when using a timestamp authority with new bundles (#​3877)
• fix: documentation link for installation guide (#​3884)

Contributors

• AdamKorcz
• Bob Callaway
• Carlos Tadeu Panato Junior
• Hayden B
• Hemil K
• Sota Sugiura
• Zach Steindler

---

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[renovate]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 61 additional dependencies were updated
• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.22.7 -> 1.24.1
github.com/google/go-containerregistry	v0.20.2 -> v0.20.3
github.com/sigstore/sigstore	v1.8.11 -> v1.8.15
golang.org/x/sync	v0.10.0 -> v0.11.0
cloud.google.com/go/compute/metadata	v0.5.0 -> v0.6.0
github.com/Azure/azure-sdk-for-go/sdk/azcore	v1.14.0 -> v1.17.0
github.com/Azure/azure-sdk-for-go/sdk/azidentity	v1.7.0 -> v1.8.1
github.com/Azure/go-ansiterm	v0.0.0-20230124172434-306776ec8161 -> v0.0.0-20250102033503-faa5f7b0171c
github.com/AzureAD/microsoft-authentication-library-for-go	v1.2.2 -> v1.3.2
github.com/aws/aws-sdk-go-v2	v1.30.5 -> v1.36.1
github.com/aws/aws-sdk-go-v2/config	v1.27.33 -> v1.29.6
github.com/aws/aws-sdk-go-v2/credentials	v1.17.32 -> v1.17.59
github.com/aws/aws-sdk-go-v2/feature/ec2/imds	v1.16.13 -> v1.16.28
github.com/aws/aws-sdk-go-v2/internal/configsources	v1.3.17 -> v1.3.32
github.com/aws/aws-sdk-go-v2/internal/endpoints/v2	v2.6.17 -> v2.6.32
github.com/aws/aws-sdk-go-v2/internal/ini	v1.8.1 -> v1.8.2
github.com/aws/aws-sdk-go-v2/service/ecr	v1.33.0 -> v1.40.3
github.com/aws/aws-sdk-go-v2/service/ecrpublic	v1.25.6 -> v1.31.2
github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding	v1.11.4 -> v1.12.2
github.com/aws/aws-sdk-go-v2/service/internal/presigned-url	v1.11.19 -> v1.12.13
github.com/aws/aws-sdk-go-v2/service/sso	v1.22.7 -> v1.24.15
github.com/aws/aws-sdk-go-v2/service/ssooidc	v1.26.7 -> v1.28.14
github.com/aws/aws-sdk-go-v2/service/sts	v1.30.7 -> v1.33.14
github.com/aws/smithy-go	v1.20.4 -> v1.22.2
github.com/awslabs/amazon-ecr-credential-helper/ecr-login	v0.0.0-20240909191326-0ee4ec5d16bf -> v0.9.1
github.com/containerd/stargz-snapshotter/estargz	v0.15.1 -> v0.16.3
github.com/coreos/go-oidc/v3	v3.11.0 -> v3.12.0
github.com/docker/docker	v27.2.1+incompatible -> v27.5.0+incompatible
github.com/fsnotify/fsnotify	v1.7.0 -> v1.8.0
github.com/golang-jwt/jwt/v4	v4.5.0 -> v4.5.1
github.com/google/certificate-transparency-go	v1.2.1 -> v1.3.1
github.com/klauspost/compress	v1.17.9 -> v1.17.11
github.com/magiconair/properties	v1.8.7 -> v1.8.9
github.com/mitchellh/mapstructure	v1.5.0 -> v1.5.1-0.20231216201459-8508981c8b6c
github.com/moby/term	v0.5.0 -> v0.5.2
github.com/prometheus/client_golang	v1.20.3 -> v1.20.5
github.com/prometheus/common	v0.59.1 -> v0.62.0
github.com/secure-systems-lab/go-securesystemslib	v0.8.0 -> v0.9.0
github.com/sigstore/fulcio	v1.6.4 -> v1.6.6
github.com/sigstore/protobuf-specs	v0.3.2 -> v0.4.0
github.com/sigstore/rekor	v1.3.6 -> v1.3.9
github.com/sigstore/timestamp-authority	v1.2.2 -> v1.2.4
github.com/spf13/cobra	v1.8.1 -> v1.9.1
github.com/vbatts/tar-split	v0.11.5 -> v0.11.6
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp	v0.54.0 -> v0.59.0
go.opentelemetry.io/otel	v1.30.0 -> v1.34.0
go.opentelemetry.io/otel/metric	v1.30.0 -> v1.34.0
go.opentelemetry.io/otel/trace	v1.30.0 -> v1.34.0
golang.org/x/crypto	v0.31.0 -> v0.33.0
golang.org/x/exp	v0.0.0-20240909161429-701f63a606c0 -> v0.0.0-20241108190413-2d47ceb2692f
golang.org/x/mod	v0.21.0 -> v0.22.0
golang.org/x/net	v0.33.0 -> v0.35.0
golang.org/x/oauth2	v0.24.0 -> v0.26.0
golang.org/x/sys	v0.28.0 -> v0.30.0
golang.org/x/term	v0.27.0 -> v0.29.0
golang.org/x/text	v0.21.0 -> v0.22.0
golang.org/x/time	v0.6.0 -> v0.10.0
google.golang.org/genproto/googleapis/api	v0.0.0-20240903143218-8af14fe29dc1 -> v0.0.0-20250115164207-1a7da9e5054f
google.golang.org/genproto/googleapis/rpc	v0.0.0-20240903143218-8af14fe29dc1 -> v0.0.0-20250207221924-e9438ea467c6
google.golang.org/grpc	v1.66.1 -> v1.70.0
google.golang.org/protobuf	v1.36.1 -> v1.36.5
sigs.k8s.io/release-utils	v0.8.4 -> v0.11.0

[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: module github.com/sigstore/cosign/v2@v2.6.1 requires go >= 1.24.6; switching to go1.24.11
go: downloading go1.24.11 (linux/amd64)
go: download go1.24.11: golang.org/toolchain@v0.0.1-go1.24.11.linux-amd64: verifying module: checksum database disabled by GOSUMDB=off