ROX-35285: replace cfssl PEM helpers with Go stdlib by janisz · Pull Request #21396 · stackrox/stackrox · GitHub
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ROX-35285: replace cfssl PEM helpers with Go stdlib#21396

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ROX-35285: replace cfssl PEM helpers with Go stdlib#21396
janisz wants to merge 11 commits into
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ROX-35285/drop-cfssl

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@janisz

@janisz janisz commented Jun 24, 2026

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Description

cfssl's helpers.ParseCertificatePEM uses sha1.Sum() internally via ComputeSKI, which is rejected under GODEBUG=fips140=only. Replace all cfssl/helpers imports with new stdlib-based functions in pkg/x509utils (ParseCertificatePEM, ParseCertificatesPEM, EncodeCertificatesPEM, ParsePrivateKeyPEM, PEMToCertPool).

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

User-facing documentation

Testing and quality

  • the change is production ready: the change is GA, or otherwise the functionality is gated by a feature flag
  • CI results are inspected

Automated testing

  • added unit tests
  • added e2e tests
  • added regression tests
  • added compatibility tests
  • modified existing tests

How I validated my change

change me!

janisz and others added 7 commits June 24, 2026 15:59
cfssl's helpers.ParseCertificatePEM uses sha1.Sum() internally via
ComputeSKI, which is rejected under GODEBUG=fips140=only. Replace all
cfssl/helpers imports with new stdlib-based functions in pkg/x509utils
(ParseCertificatePEM, ParseCertificatesPEM, EncodeCertificatesPEM,
ParsePrivateKeyPEM, PEMToCertPool).

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
cfssl's ComputeSKI uses sha1.Sum which is rejected under
GODEBUG=fips140=only. The function is hardcoded with no config
option, and cfssl's FillTemplate unconditionally overwrites
SubjectKeyId, so there is no workaround.

Replace all cfssl CA generation (initca.New), cert signing
(local.NewSigner), and certinfo parsing with Go stdlib equivalents:
- x509.CreateCertificate for cert issuance (no CSR round-trip)
- SHA-256 for SubjectKeyId computation on CA certs
- pem.Decode + x509.ParseCertificate for certinfo replacement
- pkg/logging for cfssl/log replacement

Wire-compatible: existing certs unchanged, same ECDSA-P256 keys,
same validity periods. Only newly issued certs get SHA-256 SKI
(no code reads SubjectKeyId per RFC 5280 §4.2.1.2).

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
cipher.NewGCM and NewGCMWithNonceSize both allow arbitrary IVs,
which FIPS 140-only mode rejects. NewGCMWithRandomNonce generates
nonces internally and prepends them to ciphertext — same 12-byte
nonce wire format, so existing encrypted data decrypts correctly.

This also removes the NonceGenerator dependency since nonce
generation is now internal to the AEAD.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
MD5 is rejected under GODEBUG=fips140=only. These checksums are
only used for in-memory change detection (not cryptographic), but
SHA-256 is equally fast and FIPS-compliant.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
With all cfssl imports eliminated, remove the dependency and its
transitive deps from go.mod/go.sum.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- secrets.go: format atv.Value instead of entire AttributeTypeAndValue
  struct to preserve cfssl's Names output (was producing '{2.5.4.3 CN}'
  instead of 'CN')
- crypto.go: use already-parsed cert from readCA() instead of
  re-parsing from PEM; remove dead crsProfileDefaultValidityPeriod
- crypto_codec.go: comment now explains why (FIPS compliance) not what

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Verify that stdlib replacements match cfssl behavior:
- PEM parsing: cert/chain/key formats (PKCS1, PKCS8, EC)
- Cert info extraction: pkix.Name values, SANs, algorithm string
- GCM backward compat: old nonce-prepend ciphertext decrypts correctly

Two known format differences from cfssl are intentionally accepted:

1. Algorithm string: stdlib returns "ECDSA-SHA256" where cfssl returned
   "ECDSAWithSHA256". The Algorithm field on storage.Cert has no search
   tag in the proto definition and is only rendered in the UI secret
   detail view via GraphQL — no code parses or compares this value.

2. Multi-value CertName separator: stdlib joins with ", " (space after
   comma) where cfssl used "," (no space). CertName fields (Country,
   Organization, etc.) have no search tags, are never split back into
   arrays, and are only displayed in the UI via GraphQL resolvers.

Both changes are cosmetic and affect display only.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
@openshift-ci

openshift-ci Bot commented Jun 24, 2026

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GODEBUG=fips140=only rejects non-FIPS algorithms at runtime, catching
violations during test execution rather than only at build time.

Applied globally — non-Go jobs (UI, shell) ignore the variable.

Known pre-existing failure: central/declarativeconfig uses uuid.NewSHA1
(UUID v5 per RFC 4122) which panics under fips140=only. Tracked separately.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Review Change Stack

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: e827b3ed-ccbb-4415-ba4a-829c74b2cc72

📥 Commits

Reviewing files that changed from the base of the PR and between 139dd9f and 61d4367.

📒 Files selected for processing (1)
  • .github/workflows/unit-tests.yaml

📝 Walkthrough

Summary by CodeRabbit

  • Bug Fixes
    • Improved certificate parsing and validation across TLS, SAML, user PKI, and CA-related workflows for more consistent behavior.
    • Updated certificate/CA generation and renewal logic to use standard X.509 handling while preserving expected validity behavior.
    • Fixed encrypted data handling by maintaining backward compatibility for legacy GCM ciphertexts.
  • Security
    • Switched declarative configuration content tracking from MD5 to SHA-256.
  • Tests
    • Expanded/adjusted certificate utility, TLS/CA rotation, and UUIDv5 backward-compatibility coverage.
  • Chores
    • Updated module logging and strengthened FIPS-only settings for test runs.

Walkthrough

The PR removes CFSSL usage by introducing pkg/x509utils, rewrites certificate generation and parsing paths to use standard-library crypto/X.509, switches declarative config hashing from MD5 to SHA-256, updates the GCM codec nonce handling, and wraps UUID v5 derivation for FIPS-only test execution.

Changes

CFSSL Removal and x509utils Introduction

Layer / File(s) Summary
x509utils PEM helpers
pkg/x509utils/pem.go, pkg/x509utils/pem_test.go, pkg/x509utils/file.go, pkg/x509utils/chains_test.go
Adds certificate and private-key PEM helpers, with tests and file-loading support using the new functions.
mtls CA and issuance rewrite
pkg/mtls/cn.go, pkg/mtls/cn_test.go, pkg/mtls/ca.go, pkg/mtls/ca_test.go, pkg/mtls/crypto.go
Changes Subject.Name() to return pkix.Name, stores CA signing keys as crypto.Signer, parses CA material with x509utils, and rewrites certificate issuance to generate ECDSA keys and sign with x509.CreateCertificate.
certgen and testutils certificate generation
pkg/certgen/ca.go, pkg/certgen/certgen.go, pkg/testutils/certs.go
Rewrites CA generation and certificate verification helpers to use x509utils and direct ECDSA self-signed certificate creation.
Sensor secrets certificate parsing
sensor/kubernetes/listener/resources/secrets.go, sensor/kubernetes/listener/resources/secrets_cert_test.go
Replaces CFSSL certificate parsing with pem.Decode plus x509.ParseCertificate, adds PKIX name conversion, and adds tests for name conversion and parsed certificate fields.
x509utils and logging call-site migrations
pkg/auth/authproviders/saml/settings.go, pkg/auth/authproviders/userpki/backend_impl.go, pkg/cloudproviders/aws/certs.go, pkg/metrics/tls.go, pkg/metrics/verifier_test.go, pkg/grpc/authn/userpki/extractor_test.go, sensor/kubernetes/certrefresh/certificate_expiration.go, roxctl/central/userpki/..., central/systeminfo/listener/listener.go, pkg/k8sintrospect/collector.go, pkg/registries/quay/quay.go, pkg/branding/brandedlogo_test.go, tests/client_ca_test.go, tests/endpoints_test.go, go.mod
Replaces remaining CFSSL helper parsing calls with x509utils, switches selected packages from cfssl/log to the project logger, updates one test import to standard-library sha256, and removes CFSSL from the module graph.
Test CA helper rewrites
central/clusterinit/backend/backend_test.go, central/metadata/service/service_impl_test.go, central/securedclustercertgen/certificates_test.go, operator/internal/central/extensions/reconcile_tls_ca_rotation_test.go, operator/internal/central/extensions/reconcile_tls_test.go, sensor/common/centralclient/client_test.go, sensor/tests/helper/http.go
Rewrites test CA generation helpers to use ECDSA P-256 and x509.CreateCertificate, updates certificate parsing assertions to x509utils, and adjusts related fixtures and imports.

SHA-256 File Hashing for Declarative Config

Layer / File(s) Summary
MD5 to SHA-256 file hash switch
central/declarativeconfig/watch_handler.go, central/declarativeconfig/watch_handler_test.go
Changes the checksum type from MD5 to SHA-256, updates compareHashesForChanges to call sha256.Sum256, and updates all test expectations accordingly.

GCM Crypto Codec Refactoring

Layer / File(s) Summary
GCM codec random-nonce update
pkg/cryptoutils/cryptocodec/crypto_codec.go, pkg/cryptoutils/cryptocodec/crypto_codec_test.go
Removes manual nonce generation and prefix handling; Encrypt and Decrypt now use cipher.NewGCMWithRandomNonce, and a new backward-compatibility test verifies decryption of legacy nonce-prefixed ciphertext.

UUID v5 Hashing Under FIPS-Only Test Runs

Layer / File(s) Summary
UUID v5 FIPS wiring
pkg/uuid/uuid.go, pkg/uuid/uuid_test.go, .github/workflows/unit-tests.yaml
Wraps uuid.NewSHA1 calls in fips140.WithoutEnforcement for NewV5 and NewV5FromNonUUIDs, adds backward-compatibility tests for the DNS namespace vector and NewV5FromNonUUIDs determinism, and sets GODEBUG=fips140=only in the unit-test workflow.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name Status Explanation Resolution
Description check ⚠️ Warning The PR description has the right sections but most checklist items and validation details are left as placeholders. Fill in the checklist items, note whether changelog/docs updates are needed, and describe the tests and validation you ran.
Docstring Coverage ⚠️ Warning Docstring coverage is 27.14% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (3 passed)
Check name Status Explanation
Title check ✅ Passed The title clearly matches the main change: replacing cfssl PEM helpers with stdlib-based handling.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

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  • Create PR with unit tests
  • Commit unit tests in branch ROX-35285/drop-cfssl

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Actionable comments posted: 2

🧹 Nitpick comments (1)
pkg/cryptoutils/cryptocodec/crypto_codec_test.go (1)

15-15: 🔒 Security & Privacy | 🔵 Trivial | ⚡ Quick win

Avoid secret-scanner noise for the test key.

Line 15 is test data, but Betterleaks flags the base64 literal as a generic API key. Derive it the same way as the existing test key to preserve behavior without committing a key-shaped literal.

Proposed adjustment
-	keyString := "QUVTMjU2S2V5LTMyQ2hhcmFjdGVyczEyMzQ1Njc4OTA="
+	keyString := base64.StdEncoding.EncodeToString([]byte("AES256Key-32Characters1234567890"))
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/cryptoutils/cryptocodec/crypto_codec_test.go` at line 15, The test data
in crypto_codec_test.go is triggering secret-scanner false positives because
keyString is a key-shaped base64 literal. Update the test to derive this value
the same way the existing test key is produced, so CryptoCodec test behavior
stays unchanged without hardcoding a secret-looking string. Use the keyString
setup in the test as the place to replace the literal with equivalent
generated/derived test data.

Source: Linters/SAST tools

🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@pkg/mtls/crypto.go`:
- Around line 307-320: loadCAFromFiles currently returns the CA cert and key
without verifying they belong together, so mismatched files can slip through.
Update this helper to validate the pair before returning by reusing
LoadCAForSigning or by comparing caKey.Public() against caCert.PublicKey after
parsing in loadCAFromFiles. Keep the existing readCA, readCAKey, and
x509utils.ParsePrivateKeyPEM flow, but add the certificate/key consistency check
before returning caCert and caKey.

In `@pkg/x509utils/pem.go`:
- Around line 12-16: The PEM helpers in x509utils are ignoring the unread
remainder from pem.Decode, which lets valid PEM plus trailing garbage be
accepted or causes ParseCertificatesPEM to silently stop early on malformed
tails. Update ParseCertificatePEM, ParsePrivateKeyPEM, and ParseCertificatesPEM
to validate that the full input is consumed (or that any remaining data is only
acceptable whitespace) after each pem.Decode call, and return an error when
extra non-PEM data is present. Add regression tests covering valid PEM followed
by garbage and a valid certificate followed by a malformed trailing block.

---

Nitpick comments:
In `@pkg/cryptoutils/cryptocodec/crypto_codec_test.go`:
- Line 15: The test data in crypto_codec_test.go is triggering secret-scanner
false positives because keyString is a key-shaped base64 literal. Update the
test to derive this value the same way the existing test key is produced, so
CryptoCodec test behavior stays unchanged without hardcoding a secret-looking
string. Use the keyString setup in the test as the place to replace the literal
with equivalent generated/derived test data.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: 4169ae5b-668c-42d1-a5fb-1770e6ad2a5c

📥 Commits

Reviewing files that changed from the base of the PR and between 877de2a and d6c83a3.

⛔ Files ignored due to path filters (1)
  • go.sum is excluded by !**/*.sum
📒 Files selected for processing (41)
  • central/clusterinit/backend/backend_test.go
  • central/declarativeconfig/watch_handler.go
  • central/declarativeconfig/watch_handler_test.go
  • central/metadata/service/service_impl_test.go
  • central/securedclustercertgen/certificates_test.go
  • central/systeminfo/listener/listener.go
  • go.mod
  • operator/internal/central/extensions/reconcile_tls_ca_rotation_test.go
  • operator/internal/central/extensions/reconcile_tls_test.go
  • pkg/auth/authproviders/saml/settings.go
  • pkg/auth/authproviders/userpki/backend_impl.go
  • pkg/branding/brandedlogo_test.go
  • pkg/certgen/ca.go
  • pkg/certgen/certgen.go
  • pkg/cloudproviders/aws/certs.go
  • pkg/cryptoutils/cryptocodec/crypto_codec.go
  • pkg/cryptoutils/cryptocodec/crypto_codec_test.go
  • pkg/grpc/authn/userpki/extractor_test.go
  • pkg/k8sintrospect/collector.go
  • pkg/metrics/tls.go
  • pkg/metrics/verifier_test.go
  • pkg/mtls/ca.go
  • pkg/mtls/ca_test.go
  • pkg/mtls/cn.go
  • pkg/mtls/cn_test.go
  • pkg/mtls/crypto.go
  • pkg/registries/quay/quay.go
  • pkg/testutils/certs.go
  • pkg/x509utils/chains_test.go
  • pkg/x509utils/file.go
  • pkg/x509utils/pem.go
  • pkg/x509utils/pem_test.go
  • roxctl/central/userpki/create/create.go
  • roxctl/central/userpki/list/list.go
  • sensor/common/centralclient/client_test.go
  • sensor/kubernetes/certrefresh/certificate_expiration.go
  • sensor/kubernetes/listener/resources/secrets.go
  • sensor/kubernetes/listener/resources/secrets_cert_test.go
  • sensor/tests/helper/http.go
  • tests/client_ca_test.go
  • tests/endpoints_test.go
💤 Files with no reviewable changes (1)
  • go.mod

Comment thread pkg/mtls/crypto.go
Comment on lines +307 to +320
func loadCAFromFiles() (*x509.Certificate, crypto.Signer, error) {
caCert, _, _, err := readCA()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA cert")
}
}

func createCrsSigningPolicy() *config.Signing {
return &config.Signing{
Default: createSigningProfile(crsProfileDefaultValidityPeriod, beforeGracePeriod),
keyPEM, err := readCAKey()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA key")
}
}

func createSigningProfile(lifetime time.Duration, gracePeriod time.Duration) *config.SigningProfile {
return &config.SigningProfile{
Usage: []string{"signing", "key encipherment", "server auth", "client auth"},
Expiry: lifetime + gracePeriod,
Backdate: gracePeriod,
CSRWhitelist: &config.CSRWhitelist{
PublicKey: true,
PublicKeyAlgorithm: true,
SignatureAlgorithm: true,
},
ClientProvidesSerialNumbers: true,
caKey, err := x509utils.ParsePrivateKeyPEM(keyPEM)
if err != nil {
return nil, nil, errors.Wrap(err, "parsing CA key")
}
return caCert, caKey, nil

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🗄️ Data Integrity & Integration | 🟠 Major | ⚡ Quick win

Validate the CA cert/key pair before signing.

loadCAFromFiles parses the CA cert and private key independently, so mismatched CA files can still issue certificates signed by the wrong key and fail later verification against caCert. Reuse LoadCAForSigning here or compare caKey.Public() with caCert.PublicKey before returning.

Suggested fix
 func loadCAFromFiles() (*x509.Certificate, crypto.Signer, error) {
 	caCert, _, _, err := readCA()
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "reading CA cert")
 	}
 	keyPEM, err := readCAKey()
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "reading CA key")
 	}
 	caKey, err := x509utils.ParsePrivateKeyPEM(keyPEM)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "parsing CA key")
 	}
+	caPubDER, err := x509.MarshalPKIXPublicKey(caCert.PublicKey)
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "marshaling CA public key")
+	}
+	keyPubDER, err := x509.MarshalPKIXPublicKey(caKey.Public())
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "marshaling CA private key public component")
+	}
+	if !bytes.Equal(caPubDER, keyPubDER) {
+		return nil, nil, errors.New("CA private key does not match CA certificate public key")
+	}
 	return caCert, caKey, nil
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
func loadCAFromFiles() (*x509.Certificate, crypto.Signer, error) {
caCert, _, _, err := readCA()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA cert")
}
}
func createCrsSigningPolicy() *config.Signing {
return &config.Signing{
Default: createSigningProfile(crsProfileDefaultValidityPeriod, beforeGracePeriod),
keyPEM, err := readCAKey()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA key")
}
}
func createSigningProfile(lifetime time.Duration, gracePeriod time.Duration) *config.SigningProfile {
return &config.SigningProfile{
Usage: []string{"signing", "key encipherment", "server auth", "client auth"},
Expiry: lifetime + gracePeriod,
Backdate: gracePeriod,
CSRWhitelist: &config.CSRWhitelist{
PublicKey: true,
PublicKeyAlgorithm: true,
SignatureAlgorithm: true,
},
ClientProvidesSerialNumbers: true,
caKey, err := x509utils.ParsePrivateKeyPEM(keyPEM)
if err != nil {
return nil, nil, errors.Wrap(err, "parsing CA key")
}
return caCert, caKey, nil
func loadCAFromFiles() (*x509.Certificate, crypto.Signer, error) {
caCert, _, _, err := readCA()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA cert")
}
keyPEM, err := readCAKey()
if err != nil {
return nil, nil, errors.Wrap(err, "reading CA key")
}
caKey, err := x509utils.ParsePrivateKeyPEM(keyPEM)
if err != nil {
return nil, nil, errors.Wrap(err, "parsing CA key")
}
caPubDER, err := x509.MarshalPKIXPublicKey(caCert.PublicKey)
if err != nil {
return nil, nil, errors.Wrap(err, "marshaling CA public key")
}
keyPubDER, err := x509.MarshalPKIXPublicKey(caKey.Public())
if err != nil {
return nil, nil, errors.Wrap(err, "marshaling CA private key public component")
}
if !bytes.Equal(caPubDER, keyPubDER) {
return nil, nil, errors.New("CA private key does not match CA certificate public key")
}
return caCert, caKey, nil
}
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/mtls/crypto.go` around lines 307 - 320, loadCAFromFiles currently returns
the CA cert and key without verifying they belong together, so mismatched files
can slip through. Update this helper to validate the pair before returning by
reusing LoadCAForSigning or by comparing caKey.Public() against caCert.PublicKey
after parsing in loadCAFromFiles. Keep the existing readCA, readCAKey, and
x509utils.ParsePrivateKeyPEM flow, but add the certificate/key consistency check
before returning caCert and caKey.

Comment thread pkg/x509utils/pem.go
Comment on lines +12 to +16
block, _ := pem.Decode(data)
if block == nil {
return nil, errors.New("failed to decode PEM block")
}
return x509.ParseCertificate(block.Bytes)

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🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Reject trailing garbage instead of silently truncating PEM input.

pem.Decode returns the unread remainder, but these helpers ignore it. That means ParseCertificatePEM / ParsePrivateKeyPEM accept valid PEM + garbage (or a cert file with appended extra material), and ParseCertificatesPEM will return a partial bundle if the tail is malformed. Because these helpers are used to load trust anchors and CA material (pkg/x509utils/file.go:9-15, pkg/auth/authproviders/userpki/backend_impl.go:43), silent truncation can hide config corruption and drop certificates without surfacing an error.

Suggested fix
 import (
+	"bytes"
 	"crypto"
 	"crypto/x509"
 	"encoding/pem"
 	"errors"
 )
@@
 func ParseCertificatePEM(data []byte) (*x509.Certificate, error) {
-	block, _ := pem.Decode(data)
+	block, rest := pem.Decode(data)
 	if block == nil {
 		return nil, errors.New("failed to decode PEM block")
 	}
+	if block.Type != "CERTIFICATE" {
+		return nil, errors.New("PEM block is not a certificate")
+	}
+	if len(bytes.TrimSpace(rest)) != 0 {
+		return nil, errors.New("unexpected trailing data after certificate PEM")
+	}
 	return x509.ParseCertificate(block.Bytes)
 }
@@
 		var block *pem.Block
 		block, data = pem.Decode(data)
 		if block == nil {
+			if len(bytes.TrimSpace(data)) != 0 {
+				return nil, errors.New("invalid trailing PEM data")
+			}
 			break
 		}
@@
 func ParsePrivateKeyPEM(data []byte) (crypto.Signer, error) {
-	block, _ := pem.Decode(data)
+	block, rest := pem.Decode(data)
 	if block == nil {
 		return nil, errors.New("failed to decode PEM block")
 	}
+	if len(bytes.TrimSpace(rest)) != 0 {
+		return nil, errors.New("unexpected trailing data after private key PEM")
+	}

Please add regression coverage for valid PEM + garbage and valid cert + malformed trailing block.

Also applies to: 24-26, 67-70

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/x509utils/pem.go` around lines 12 - 16, The PEM helpers in x509utils are
ignoring the unread remainder from pem.Decode, which lets valid PEM plus
trailing garbage be accepted or causes ParseCertificatesPEM to silently stop
early on malformed tails. Update ParseCertificatePEM, ParsePrivateKeyPEM, and
ParseCertificatesPEM to validate that the full input is consumed (or that any
remaining data is only acceptable whitespace) after each pem.Decode call, and
return an error when extra non-PEM data is present. Add regression tests
covering valid PEM followed by garbage and a valid certificate followed by a
malformed trailing block.

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UUID v5 (RFC 4122) mandates SHA-1 for deterministic ID derivation.
Go's fips140=only mode blanket-rejects crypto/sha1 even for non-
cryptographic use like UUID generation, causing runtime panics in
~30 call sites that produce persistent database primary keys.

Replace uuid.NewSHA1 (which calls crypto/sha1.New internally) with
uuid.NewHash + a standalone SHA-1 implementation that is invisible
to Go's FIPS enforcement. The standalone SHA-1 implements hash.Hash
per FIPS 180-4 without importing crypto/sha1.

Alternatives considered:
- SHA-256 + UUID v8: different UUIDs would break all stored PKs
- Fork google/uuid: maintenance burden
- Selective FIPS per package: weakens enforcement
- go:linkname crypto internals: fragile across Go versions

Backward compatibility test verifies identical output against the
RFC 4122 Appendix B test vector (DNS namespace + "example.com").

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace standalone SHA-1 implementation with crypto/fips140.WithoutEnforcement
to temporarily disable FIPS enforcement around uuid.NewSHA1 calls. This keeps
the certified crypto module while acknowledging UUID v5's SHA-1 usage is
non-cryptographic ID derivation per RFC 4122.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Actionable comments posted: 1

🧹 Nitpick comments (1)
pkg/uuid/sha1.go (1)

73-84: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick win

Add fixed SHA-1 vectors for padding-boundary coverage.

This hand-rolled digest is now part of the UUID stability contract, but the shown tests only cover short UUID inputs. Add hard-coded vectors such as empty string, "abc", and the 56-byte FIPS test message to catch padding/multi-block regressions without importing crypto/sha1 under FIPS mode. As per path instructions, focus on major maintainability and security-impacting issues.

Suggested test shape
+func TestSHA1KnownVectors(t *testing.T) {
+	tests := map[string]string{
+		"": "da39a3ee5e6b4b0d3255bfef95601890afd80709",
+		"abc": "a9993e364706816aba3e25717850c26c9cd0d89d",
+		"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq": "84983e441c3bd26ebaae4aa1f95129e5e54670f1",
+	}
+	for input, expected := range tests {
+		h := newSHA1()
+		_, err := h.Write([]byte(input))
+		assert.NoError(t, err)
+		assert.Equal(t, expected, hex.EncodeToString(h.Sum(nil)))
+	}
+}
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/uuid/sha1.go` around lines 73 - 84, Add fixed SHA-1 test vectors to cover
padding-boundary behavior in the hand-rolled digest used by sha1digest.checkSum.
Update the UUID tests to include hard-coded expected outputs for empty string,
"abc", and the 56-byte FIPS message so multi-block/padding regressions are
caught without relying on crypto/sha1 under FIPS mode. Place the coverage
alongside the existing UUID stability tests and verify the expected digests
against known constants.

Source: Path instructions

🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@pkg/uuid/uuid_test.go`:
- Around line 103-109: The backward-compatibility test in TestNewV5FromNonUUIDs
only checks determinism and the version nibble, so it won’t catch algorithm
changes. Update the test to assert the exact legacy UUID returned by
NewV5FromNonUUIDs for the "test-namespace"/"test-name" inputs, using the pinned
value c9718920-62fa-5f50-8d97-541eafa3e925, while keeping the existing version
check if desired.

---

Nitpick comments:
In `@pkg/uuid/sha1.go`:
- Around line 73-84: Add fixed SHA-1 test vectors to cover padding-boundary
behavior in the hand-rolled digest used by sha1digest.checkSum. Update the UUID
tests to include hard-coded expected outputs for empty string, "abc", and the
56-byte FIPS message so multi-block/padding regressions are caught without
relying on crypto/sha1 under FIPS mode. Place the coverage alongside the
existing UUID stability tests and verify the expected digests against known
constants.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: 90f05baa-016f-4c9a-9e1c-136cb26498ef

📥 Commits

Reviewing files that changed from the base of the PR and between d6c83a3 and 229567b.

📒 Files selected for processing (4)
  • .github/workflows/unit-tests.yaml
  • pkg/uuid/sha1.go
  • pkg/uuid/uuid.go
  • pkg/uuid/uuid_test.go

Comment thread pkg/uuid/uuid_test.go
Comment on lines +103 to +109

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🗄️ Data Integrity & Integration | 🟡 Minor

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Compute the expected legacy UUID without executing repository code.
python3 - <<'PY'
import hashlib
import uuid

ns = uuid.UUID(bytes=hashlib.sha256(b"test-namespace").digest()[:16])
print(uuid.uuid5(ns, "test-name"))
PY

Repository: stackrox/stackrox

Length of output: 192


🏁 Script executed:

#!/bin/bash
set -euo pipefail

# Locate the implementation and related tests for NewV5FromNonUUIDs.
git ls-files | rg '^pkg/uuid/'
printf '\n--- implementation search ---\n'
rg -n "func NewV5FromNonUUIDs|NewV5FromNonUUIDs\(" pkg/uuid -S

printf '\n--- test file excerpt ---\n'
sed -n '1,180p' pkg/uuid/uuid_test.go

printf '\n--- implementation excerpt ---\n'
sed -n '1,220p' pkg/uuid/uuid.go

Repository: stackrox/stackrox

Length of output: 9104


🏁 Script executed:

#!/bin/bash
set -euo pipefail

# Inspect only the relevant uuid implementation and test around the cited lines.
sed -n '1,220p' pkg/uuid/uuid_test.go
printf '\n---\n'
sed -n '1,220p' pkg/uuid/uuid.go

Repository: stackrox/stackrox

Length of output: 8728


Pin the legacy UUID value. Add an exact expected UUID for NewV5FromNonUUIDs("test-namespace", "test-name") (c9718920-62fa-5f50-8d97-541eafa3e925) so this backward-compatibility test catches algorithm changes, not just determinism.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/uuid/uuid_test.go` around lines 103 - 109, The backward-compatibility
test in TestNewV5FromNonUUIDs only checks determinism and the version nibble, so
it won’t catch algorithm changes. Update the test to assert the exact legacy
UUID returned by NewV5FromNonUUIDs for the "test-namespace"/"test-name" inputs,
using the pinned value c9718920-62fa-5f50-8d97-541eafa3e925, while keeping the
existing version check if desired.

Source: Path instructions

Setting GODEBUG=fips140=only at workflow env level breaks Go toolchain
operations (go env, go mod download) because the Go HTTPS client uses
X25519 for TLS key exchange, which is not FIPS 140-approved:

  crypto/ecdh: use of X25519 is not allowed in FIPS 140-only mode

Move GODEBUG from global env to per-test-step env for:
- go-unit-tests
- integration-unit-tests
- operator test-integration/test-helm
- go-postgres-unit-tests
- go-postgres-bench-tests
- sensor-integration-test

This allows builds, module downloads, and setup steps to use non-FIPS
algorithms (X25519) for HTTPS, while enforcing FIPS-only mode during
actual test execution.

Partially generated by AI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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