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Implement M8: agent-side key generation with ECDSA P-256

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Private keys never leave agent infrastructure. Agents generate ECDSA P-256
key pairs locally, store them with 0600 permissions, and submit only the CSR
(public key) to the control plane. New AwaitingCSR job state pauses
renewal/issuance jobs until the agent submits its CSR. Server-side keygen
retained behind CERTCTL_KEYGEN_MODE=server for demo/development.

Key changes:
- Dual keygen mode via CERTCTL_KEYGEN_MODE (agent default, server for demo)
- AwaitingCSR job state with CommonName/SANs in work response
- Agent ECDSA P-256 keygen, local key storage, CSR-only submission
- CompleteAgentCSRRenewal server-side flow for agent-submitted CSRs
- DeploymentRequest.KeyPEM for agent-provided keys during deployment
- Dockerfile.agent creates /var/lib/certctl/keys with correct ownership

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Shankar
2026-03-15 13:51:41 -04:00
parent 4b2e694abe
commit 3ef6316457
15 changed files with 576 additions and 184 deletions
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internal/service/job_test.go
+1 -1
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@@ -28,7 +28,7 @@ func newTestJobService(jobRepo *mockJobRepo) *JobService {
targetRepo := &mockTargetRepo{Targets: make(map[string]*domain.DeploymentTarget)}
agentRepo := &mockAgentRepo{Agents: make(map[string]*domain.Agent)}
renewalService := NewRenewalService(certRepo, jobRepo, renewalPolicyRepo, auditService, notifService, make(map[string]IssuerConnector))
renewalService := NewRenewalService(certRepo, jobRepo, renewalPolicyRepo, auditService, notifService, make(map[string]IssuerConnector), "server")
deploymentService := NewDeploymentService(jobRepo, targetRepo, agentRepo, certRepo, auditService, notifService)
return NewJobService(jobRepo, renewalService, deploymentService, logger)