mirror of
https://github.com/hashicorp/packer.git
synced 2026-09-27 10:14:01 -04:00
Tanmay Jain
014f8d1bbe
* feat(provenance): add SLSA provenance and attestation signing libraries Add internal/provenance for deriving in-toto subjects from Packer artifacts, building SLSA Provenance v1 predicates, wrapping in-toto statements, and best-effort git/CI source detection. Add internal/attestation for DSSE envelope handling and a pluggable Signer/Verifier backend supporting key (local PEM), kms (aws/gcp/ azure/hashivault), and keyless (Sigstore Fulcio) modes, plus Sigstore bundle handling and DSSE/policy verification. Add the supporting module dependencies in go.mod/go.sum. * feat(provenance): add provenance post-processor Add the opt-in "provenance" post-processor that runs after a build, derives subjects from the artifact, emits DSSE-wrapped SLSA provenance (and optional SBOM) attestations, signs them via the configured signing backend, and writes sidecar files (including *.sigstore.json bundles in keyless mode). Register it in the core post-processor set. The provenance enable flag is a tri-state so an unset value stays enabled through HCL2 decoding instead of being silently disabled. * feat(provenance): add verify-attestation command Add "packer verify-attestation" to verify signed DSSE attestations against key, KMS, and keyless policy inputs, including optional Sigstore bundle checks for Rekor and timestamp evidence. Register the command in the CLI. * docs(provenance): add reference CI workflows and changelog Add reference GitHub Actions workflows under examples/ci for SLSA L2 keyless signing and L3-compatible delegated signing * fix: lint and tests * Added docs for Provenance PostProcessor
23 lines
636 B
Go
23 lines
636 B
Go
// Copyright IBM Corp. 2024, 2025
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// SPDX-License-Identifier: BUSL-1.1
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package attestation
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import (
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"context"
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"fmt"
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)
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type bundleSigner interface {
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SignBundle(ctx context.Context, payloadType string, payload []byte, cfg BackendConfig) (Envelope, []byte, error)
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}
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func BuildBundleForSigner(ctx context.Context, signer Signer, cfg BackendConfig, payloadType string, payload []byte) (Envelope, []byte, error) {
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bundler, ok := signer.(bundleSigner)
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if !ok {
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return Envelope{}, nil, fmt.Errorf("signing_mode %q does not support Sigstore bundle emission", cfg.Mode)
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}
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return bundler.SignBundle(ctx, payloadType, payload, cfg)
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}
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