{"record":{"id":"6d872c871f7bc844","repo":"hyperledger/fabric","slug":"could-not-sign-the-ccpackage-err-s","errorCode":null,"errorMessage":"Could not sign the ccpackage, err %s","messagePattern":"Could not sign the ccpackage, err (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"core/common/ccpackage/ccpackage.go","lineNumber":188,"sourceCode":"\tcdsbytes := protoutil.MarshalOrPanic(cds)\n\n\tinstpolicybytes := protoutil.MarshalOrPanic(instPolicy)\n\n\tvar endorsements []*peer.Endorsement\n\t// it is not mandatory (at this protoutil level) to have a signature\n\t// this is especially convenient during dev/test\n\t// it may be necessary to enforce it via a policy at a higher level\n\tif owner != nil {\n\t\t// serialize the signing identity\n\t\tendorser, err := owner.Serialize()\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"Could not serialize the signing identity: %s\", err)\n\t\t}\n\n\t\t// sign the concatenation of cds, instpolicy and the serialized endorser identity with this endorser's key\n\t\tsignature, err := owner.Sign(append(cdsbytes, append(instpolicybytes, endorser...)...))\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"Could not sign the ccpackage, err %s\", err)\n\t\t}\n\n\t\t// each owner starts off the endorsements with one element. All such endorsed\n\t\t// packages will be collected in a final package by CreateSignedCCDepSpecForInstall\n\t\t// when endorsements will have all the entries\n\t\tendorsements = make([]*peer.Endorsement, 1)\n\n\t\tendorsements[0] = &peer.Endorsement{Signature: signature, Endorser: endorser}\n\t}\n\n\treturn createSignedCCDepSpec(cdsbytes, instpolicybytes, endorsements)\n}\n\n// SignExistingPackage adds a signature to a signed package.\nfunc SignExistingPackage(env *common.Envelope, owner identity.SignerSerializer) (*common.Envelope, error) {\n\tif owner == nil {\n\t\treturn nil, errors.New(\"owner not provided\")\n\t}","sourceCodeStart":170,"sourceCodeEnd":206,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/core/common/ccpackage/ccpackage.go#L170-L206","documentation":"After serializing the identity, OwnerCreateSignedCCDepSpec signs the concatenation of the marshalled CDS, instantiation policy and endorser identity with owner.Sign. If the signing operation fails, the error is wrapped as 'Could not sign the ccpackage, err %s' with the underlying cause (usually a key/crypto error).","triggerScenarios":"owner.Sign returns an error: signing key missing or unreadable in the keystore, unsupported key type for the MSP crypto suite, or a custom SignerSerializer whose Sign always errors (e.g. nil private key).","commonSituations":"MSP keystore directory present but empty (no private key PEM); certificates and key mismatch after regenerating crypto material; BCCSP/SW crypto provider misconfiguration (wrong security level or hash family); hardware (HSM) provider unavailable.","solutions":["Inspect the wrapped cause: fix the underlying key error (e.g. restore the private key in msp/keystore)","Regenerate crypto material so cert and key match (cryptogen / Fabric CA re-enroll)","Verify BCCSP configuration (CORE_CRYPTO_*) matches the key type used (ECDSA vs RSA) and the software provider can load it","Test the signer standalone with signer.Sign([]byte(\"test\")) before packaging"],"exampleFix":"// before\nenv, err := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, signer) // fails: empty keystore\n// after\nif _, err := signer.Sign([]byte(\"probe\")); err != nil {\n    return fmt.Errorf(\"signer unusable, check msp/keystore private key: %w\", err)\n}\nenv, err := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, signer)","handlingStrategy":"validation","validationCode":"if _, err := owner.Sign([]byte(\"probe\")); err != nil {\n    return fmt.Errorf(\"signer key unusable: %w\", err)\n}","typeGuard":"func canSign(s identity.SignerSerializer) bool {\n    if s == nil { return false }\n    _, err := s.Sign([]byte(\"probe\"))\n    return err == nil\n}","tryCatchPattern":"env, err := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, owner)\nif err != nil {\n    if strings.HasPrefix(err.Error(), \"Could not sign the ccpackage\") {\n        return fmt.Errorf(\"check msp/keystore private key and BCCSP config: %w\", err)\n    }\n    return err\n}","preventionTips":["Ensure msp/keystore contains the private key matching signcerts","Match BCCSP provider config to your key type","Probe the signer once at startup so failures surface early"],"tags":["hyperledger-fabric","signing","msp","bccsp","crypto"],"backgroundTag":"signing-operation-failed","analyzedSha":"2736b63f8fd5932511d56fe68b7039d15977f7f6","analyzedAt":"2026-09-04T08:52:36.465Z","contentChangedAt":"2026-09-04T08:52:36.465Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}