我试图实现相互TLS连接。这是流程:
NSURLAuthenticationMethodClientCertificate
质询时,我使用此证书中的凭据解析它Error Domain=NSURLErrorDomain Code=-1200
"发生SSL错误,无法与服务器建立安全连接。" 在检查服务器和客户端之间的流量时,它似乎是客户端问题。
问题 :
任何想法,建议都非常感谢。感谢。
public func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Swift.Void) {
//server trust works fine
if (challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust) {
if (self.shouldTrustProtectionSpace(space: challenge.protectionSpace)) {
completionHandler(.useCredential, URLCredential(trust: challenge.protectionSpace.serverTrust!))
}
}
//This one causes the issue
else if (challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodClientCertificate) {
let identityAndTrust: IdentityAndTrust = self.extractIdentity()
let urlCredential: URLCredential = URLCredential(
identity: identityAndTrust.identityRef,
certificates: identityAndTrust.certArray as? [AnyObject],
persistence: URLCredential.Persistence.forSession)
completionHandler(.useCredential, urlCredential)
}
}
struct IdentityAndTrust {
var identityRef: SecIdentity
var trust: SecTrust
var certArray: AnyObject
}
func extractIdentity() -> IdentityAndTrust {
var identityAndTrust: IdentityAndTrust!
var securityError: OSStatus = errSecSuccess
var path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
path = path + "/ca.p12"
//let path: String = NSBundle.mainBundle().pathForResource("client", ofType: "p12")!
let PKCS12Data = NSData(contentsOfFile:path)!
let key: NSString = kSecImportExportPassphrase as NSString
let options: NSDictionary = [key : "123"]
//create variable for holding security information
//var privateKeyRef: SecKeyRef? = nil
var items: CFArray?
securityError = SecPKCS12Import(PKCS12Data, options, &items)
if securityError == errSecSuccess {
let certItems: CFArray = items as CFArray!
let certItemsArray: Array = certItems as Array
let dict: AnyObject? = certItemsArray.first
if let certEntry: Dictionary = dict as? Dictionary<String, AnyObject> {
// grab the identity
let identityPointer: AnyObject? = certEntry["identity"]
let secIdentityRef: SecIdentity = identityPointer as! SecIdentity!
print("\(identityPointer) :::: \(secIdentityRef)")
// grab the trust
let trustPointer: AnyObject? = certEntry["trust"]
let trustRef: SecTrust = trustPointer as! SecTrust
print("\(trustPointer) :::: \(trustRef)")
// grab the certificate chain
var certRef: SecCertificate?
SecIdentityCopyCertificate(secIdentityRef, &certRef)
let certArray: NSMutableArray = NSMutableArray()
let reader = DmailReader.sharedReader
let caCertString = reader.getCACert()
let cerData = X509Utility.der(fromData: caCertString)
let convertedData = cerData as! CFData
let caCert = SecCertificateCreateWithData(nil, convertedData)
certArray.add(certRef as SecCertificate!)
certArray.add(caCert!)
identityAndTrust = IdentityAndTrust(identityRef: secIdentityRef, trust: trustRef, certArray: certArray)
}
}
return identityAndTrust
}
答案 0 :(得分:0)
服务器似乎使用证书链响应了我的csr请求:一个客户端证书和一个中间证书。我只解析了第一个并显然跳过了中间版。
/*identity only contains client cert. Certificates is the array of intermediate certificates (in my case its 1, can be more)*/
NSURLCredential *credential = [[NSURLCredential alloc]initWithIdentity:identity
certificates:certificates
persistence:NSURLCredentialPersistencePermanent];
然后将其传递到urlSession:didReceiveChallenge:completionHandler:
completionHandler(.useCredential, urlCredential)