You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: server.go
    path of file: ./repos/gitkube/vendor/golang.org/x/crypto/ssh/agent
    
    the code of the file until where you have to start completion: // Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package agent

import (
	"crypto/dsa"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rsa"
	"encoding/binary"
	"errors"
	"fmt"
	"io"
	"log"
	"math/big"

	"golang.org/x/crypto/ed25519"
	"golang.org/x/crypto/ssh"
)

// Server wraps an Agent and uses it to implement the agent side of
// the SSH-agent, wire protocol.
type server struct {
	agent Agent
}

func (s *server) processRequestBytes(reqData []byte) []byte {
	rep, err := s.processRequest(reqData)
	if err != nil {
		if err != errLocked {
			// TODO(hanwen): provide better logging interface?
			log.Printf("agent %d: %v", reqData[0], err)
		}
		return []byte{agentFailure}
	}

	if err == nil && rep == nil {
		re
    
func parseRSACert(req []byte) (*AddedKey, error) {
	var k rsaCertMsg
	if err := ssh.Unmarshal(req, &k); err != nil {
		return nil, err
	}

	pubKey, err := ssh.ParsePublicKey(k.CertBytes)
	if err != nil {
		return nil, err
	}

	cert, ok := pubKey.(*ssh.Certificate)
	if !ok {
		return nil, errors.New("agent: bad RSA certificate")
	}

	// An RSA publickey as marshaled by rsaPublicKey.Marshal() in keys.go
	var rsaPub struct {
		Name string
		E    *big.Int
		N    *big.Int
	}
	if err := ssh.Unmarshal(cert.Key.Marshal(), &rsaPub); err != nil {
		return nil, fmt.Errorf("agent: Unmarshal failed to parse public key: %v", err)
	}

	if rsaPub.E.BitLen() > 30 {
		return nil, errors.New("agent: RSA public exponent too large")
	}

	priv := rsa.PrivateKey{
		PublicKey: rsa.PublicKey{
			E: int(rsaPub.E.Int64()),
			N: rsaPub.N,
		},
		D:      k.D,
		Primes: []*big.Int{k.Q, k.P},
	}
	priv.Precompute()

	addedKey := &AddedKey{PrivateKey: &priv, Certificate: cert, Comment: k.Comments}
	if err := setConstraints(addedKey, k.Constraints); err != nil {
		return nil, err
	}
	return addedKey, nil
}