hyperledger/fabric · error

failed deserializing identity

Error message

failed deserializing identity

What it means

The identity bytes supplied in the discovery request's AuthInfo could not be deserialized by the channel's MSP manager, typically because the identity is malformed, from an MSP unknown to the channel, or expired/corrupt. The original MSP error is wrapped with this message.

Source

Thrown at discovery/support/acl/support.go:100

	if v == nil {
		logger.Panic("ConfigtxValidator for channel", channel, "is nil")
	}
	return v.Sequence()
}

func (s *DiscoverySupport) SatisfiesPrincipal(channel string, rawIdentity []byte, principal *msp.MSPPrincipal) error {
	conf := s.GetChannelConfig(channel)
	if conf == nil {
		return errors.Errorf("channel %s doesn't exist", channel)
	}
	mspMgr := conf.MSPManager()
	if mspMgr == nil {
		return errors.Errorf("could not find MSP manager for channel %s", channel)
	}
	identity, err := mspMgr.DeserializeIdentity(rawIdentity)
	if err != nil {
		logger.Warnw("failed deserializing identity", "error", err, "identity", protoutil.LogMessageForSerializedIdentity(rawIdentity))
		return errors.Wrap(err, "failed deserializing identity")
	}
	return identity.SatisfiesPrincipal(principal)
}

// ChannelPolicyManagerGetter is a support interface
// to get access to the policy manager of a given channel
type ChannelPolicyManagerGetter interface {
	// Returns the policy manager associated to the passed channel
	// and true if it was the manager requested, or false if it is the default manager
	Manager(channelID string) policies.Manager
}

// NewChannelVerifier returns a new channel verifier from the given policy and policy manager getter
func NewChannelVerifier(policy string, polMgr policies.ChannelPolicyManagerGetter) *ChannelVerifier {
	return &ChannelVerifier{
		Policy:                     policy,
		ChannelPolicyManagerGetter: polMgr,
	}

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Re-enroll or refresh the client's certificate and confirm the identity belongs to an MSP in the channel
2. Point the client SDK at the correct signing identity material (not the TLS cert) from the org's crypto config
3. Inspect the wrapped inner error in peer logs for the exact MSP failure (e.g. 'certificate has expired', 'MSP error: ca cert not found')

Example fix

// before
identity, _ := os.ReadFile("tls/server.crt") // wrong cert
// after
identity, _ := os.ReadFile("crypto-config/peerOrganizations/org1/users/Admin@org1/msp/signcerts/Admin@org1-cert.pem")

// ensure the cert file parses before use
block, _ := pem.Decode(certPEM)
if block == nil {
    return errors.New("identity is not valid PEM")
}
if _, err := x509.ParseCertificate(block.Bytes); err != nil {
    return fmt.Errorf("identity cert invalid: %w", err)
}

res, err := client.Send(ctx, req)
if err != nil {
    var wrapped interface{ Unwrap() error }
    if strings.Contains(err.Error(), "failed deserializing identity") {
        // rotate/re-enroll identity, then retry
    }
    return err
}

When it happens

Trigger: Client sends a signed discovery request with tlscert/identity bytes that don't parse: wrong certificate in the SDK's identity config, identity from an org not in the channel, or truncated/DER-vs-PEM mixups.

Common situations: Enrollment certificate expired or rotated and the client still presents the old cert; using the TLS certificate instead of the signing identity; client's MSP (crypto material folder) not belonging to any org in the channel.

Related errors

• collection-name: %s -- contains an identity that is not part
• Failed verifying that proposal's creator satisfies local MSP
• could not find MSP manager for channel %s
• Cannot create signed proposal, due to %s
• failed to serialize signer

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/c685ec789bf1f4e1. Report an issue: GitHub.