func (h *certRequestHandler) saveSigningRequest(config ssh_ca_util.SignerdConfig, environment, reason, requestIDStr string, requestSerial uint64, cert *ssh.Certificate) (bool, error) {
requesterFp := ssh_ca_util.MakeFingerprint(cert.SignatureKey.Marshal())
maxValidBefore := uint64(time.Now().Add(time.Duration(config.MaxCertLifetime) * time.Second).Unix())
if config.MaxCertLifetime != 0 && cert.ValidBefore > maxValidBefore {
return false, fmt.Errorf("Certificate is valid longer than maximum permitted by configuration %d > %d",
cert.ValidBefore, maxValidBefore)
}
// We override keyid here so that its a server controlled value. Instead of
// letting a requester attempt to spoof it.
var ok bool
cert.KeyId, ok = config.AuthorizedUsers[requesterFp]
if !ok {
return false, fmt.Errorf("Requester fingerprint (%s) not found in config", requesterFp)
}
if requestSerial == 0 {
return false, fmt.Errorf("Serial number not set.")
}
cert.Serial = requestSerial
certRequest := newcertRequest()
certRequest.request = cert
if environment == "" {
return false, fmt.Errorf("Environment is a required field")
}
certRequest.environment = environment
if reason == "" {
return false, fmt.Errorf("Reason is a required field")
}
certRequest.reason = reason
if len(requestIDStr) < 12 {
return false, fmt.Errorf("Request id is too short to be useful.")
}
_, ok = h.state[requestIDStr]
if ok {
return false, fmt.Errorf("Request id '%s' already in use.", requestIDStr)
}
h.state[requestIDStr] = certRequest
// This is the special case of supporting auto-signing.
if config.NumberSignersRequired < 0 {
signed, err := h.maybeSignWithCa(requestIDStr, config.NumberSignersRequired, config.SigningKeyFingerprint)
if signed && err == nil {
return true, nil
}
}
return false, nil
}
func (h *certRequestHandler) saveSigningRequest(config ssh_ca_util.SignerdConfig, environment, reason, requestIDStr string, requestSerial uint64, cert *ssh.Certificate) error {
requesterFp := ssh_ca_util.MakeFingerprint(cert.SignatureKey.Marshal())
// We override keyid here so that its a server controlled value. Instead of
// letting a requester attempt to spoof it.
var ok bool
cert.KeyId, ok = config.AuthorizedUsers[requesterFp]
if !ok {
return fmt.Errorf("Requester fingerprint (%s) not found in config", requesterFp)
}
if requestSerial == 0 {
return fmt.Errorf("Serial number not set.")
}
cert.Serial = requestSerial
certRequest := newcertRequest()
certRequest.request = cert
if environment == "" {
return fmt.Errorf("Environment is a required field")
}
certRequest.environment = environment
if reason == "" {
return fmt.Errorf("Reason is a required field")
}
certRequest.reason = reason
if len(requestIDStr) < 12 {
return fmt.Errorf("Request id is too short to be useful.")
}
_, ok = h.state[requestIDStr]
if ok {
return fmt.Errorf("Request id '%s' already in use.", requestIDStr)
}
h.state[requestIDStr] = certRequest
return nil
}
func (c *client) insertCert(s interface{}, cert *ssh.Certificate, comment string, constraints []byte) error {
var req []byte
switch k := s.(type) {
case *rsa.PrivateKey:
if len(k.Primes) != 2 {
return fmt.Errorf("agent: unsupported RSA key with %d primes", len(k.Primes))
}
k.Precompute()
req = ssh.Marshal(rsaCertMsg{
Type: cert.Type(),
CertBytes: cert.Marshal(),
D: k.D,
Iqmp: k.Precomputed.Qinv,
P: k.Primes[0],
Q: k.Primes[1],
Comments: comment,
Constraints: constraints,
})
case *dsa.PrivateKey:
req = ssh.Marshal(dsaCertMsg{
Type: cert.Type(),
CertBytes: cert.Marshal(),
X: k.X,
Comments: comment,
Constraints: constraints,
})
case *ecdsa.PrivateKey:
req = ssh.Marshal(ecdsaCertMsg{
Type: cert.Type(),
CertBytes: cert.Marshal(),
D: k.D,
Comments: comment,
Constraints: constraints,
})
case *ed25519.PrivateKey:
req = ssh.Marshal(ed25519CertMsg{
Type: cert.Type(),
CertBytes: cert.Marshal(),
Pub: []byte(*k)[32:],
Priv: []byte(*k),
Comments: comment,
Constraints: constraints,
})
default:
return fmt.Errorf("agent: unsupported key type %T", s)
}
// if constraints are present then the message type needs to be changed.
if len(constraints) != 0 {
req[0] = agentAddIdConstrained
}
signer, err := ssh.NewSignerFromKey(s)
if err != nil {
return err
}
if bytes.Compare(cert.Key.Marshal(), signer.PublicKey().Marshal()) != 0 {
return errors.New("agent: signer and cert have different public key")
}
resp, err := c.call(req)
if err != nil {
return err
}
if _, ok := resp.(*successAgentMsg); ok {
return nil
}
return errors.New("agent: failure")
}
func MakeCertificate() ssh.Certificate {
var newCert ssh.Certificate
// The sign() method fills in Nonce for us
newCert.Nonce = make([]byte, 32)
return newCert
}