{"record":{"id":"122800ad0b63ed40","repo":"caddyserver/caddy","slug":"encoding-root-certificate-v","errorCode":null,"errorMessage":"encoding root certificate: %v","messagePattern":"encoding root certificate: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"modules/caddypki/ca.go","lineNumber":327,"sourceCode":"\t\trootKey, err = certmagic.PEMDecodePrivateKey(rootKeyPEM)\n\t\tif err != nil {\n\t\t\treturn nil, nil, fmt.Errorf(\"decoding root key: %v\", err)\n\t\t}\n\t}\n\n\treturn rootCert, rootKey, nil\n}\n\nfunc (ca CA) genRoot() (rootCert *x509.Certificate, rootKey crypto.Signer, err error) {\n\trepl := ca.newReplacer()\n\n\trootCert, rootKey, err = generateRoot(repl.ReplaceAll(ca.RootCommonName, \"\"))\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"generating CA root: %v\", err)\n\t}\n\trootCertPEM, err := pemEncodeCert(rootCert.Raw)\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"encoding root certificate: %v\", err)\n\t}\n\terr = ca.storage.Store(ca.ctx, ca.storageKeyRootCert(), rootCertPEM)\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"saving root certificate: %v\", err)\n\t}\n\trootKeyPEM, err := certmagic.PEMEncodePrivateKey(rootKey)\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"encoding root key: %v\", err)\n\t}\n\terr = ca.storage.Store(ca.ctx, ca.storageKeyRootKey(), rootKeyPEM)\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"saving root key: %v\", err)\n\t}\n\n\treturn rootCert, rootKey, nil\n}\n\nfunc (ca CA) loadOrGenIntermediate(rootCert *x509.Certificate, rootKey crypto.Signer) (interCertChain []*x509.Certificate, interKey crypto.Signer, err error) {","sourceCodeStart":309,"sourceCodeEnd":345,"githubUrl":"https://github.com/caddyserver/caddy/blob/50e54ee279aa1e504fe218ca49ab6ae16c100410/modules/caddypki/ca.go#L309-L345","documentation":"After generating a root certificate, Caddy PEM-encodes it (pemEncodeCert on rootCert.Raw) before storing. If encoding the DER bytes into a PEM block fails, genRoot aborts with 'encoding root certificate'. Encoding failures are essentially internal invariant breaks (bad DER from a malformed certificate) rather than environmental problems.","triggerScenarios":"pemEncodeCert(interCert/rootCert Raw) returns an error: the generated x509 certificate contains fields that serialize to invalid DER, or the Raw bytes are empty/nil due to an upstream library fault. Only reachable on the root-generation path (no existing root in storage).","commonSituations":"Rare. Seen with abnormal certificate contents (e.g. a common name or serial producing non-conforming DER) or after a botched Caddy/smallstep upgrade that yields certificates that fail to marshal. Retry after upgrade; if reproducible, report with logs.","solutions":["Upgrade to the latest Caddy build (picks up current Go crypto/x509 and bundled libraries).","Retry provisioning once to rule out transient memory corruption.","If reproducible, collect the wrapped error and CA config and report upstream; as a workaround, import a root via the root{ cert/key } block instead of generating one."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"// internal invariant failure: no caller-side remedy; capture and report\nif strings.Contains(err.Error(), \"encoding root certificate\") {\n    logErrorWithConfig(err, caConfig) // report upstream; workaround: import external root\n}","preventionTips":["Run current stable Caddy releases.","Avoid forks that inject custom signers into the PKI path.","Keep an external root cert/key pair ready as a fallback import path."],"tags":["pki","pem","encoding","internal"],"backgroundTag":null,"analyzedSha":"50e54ee279aa1e504fe218ca49ab6ae16c100410","analyzedAt":"2026-08-15T09:20:21.641Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}