return psv, ErrInvalidQuerySignatureAlgo
	}

	// Initialize signature version '4' structured header.
	preSignV4Values := preSignValues{}

	// Save credential.
	preSignV4Values.Credential, aec = parseCredentialHeader("Credential="+query.Get(xhttp.AmzCredential), region, stype)
	if aec != ErrNone {
		return psv, aec
	}

	var e error
	// Save date in native time.Time.

			success: false,
		},
		// invalid json.
		{

 */
package okhttp3

import java.nio.charset.Charset
import kotlin.text.Charsets.ISO_8859_1
import okio.ByteString.Companion.encode

/** Factory for HTTP authorization credentials. */
object Credentials {
  /** Returns an auth credential for the Basic scheme. */
  @JvmStatic @JvmOverloads
  fun basic(
    username: String,
    password: String,
    charset: Charset = ISO_8859_1,
  ): String {

    responses += response
    routes += route
    if (!schemeMatches(response) || credential == null) return null
    val header =
      when (response.code) {
        407 -> "Proxy-Authorization"
        else -> "Authorization"
      }
    return response.request.newBuilder()
      .addHeader(header, credential)
      .build()
  }

  private fun schemeMatches(response: Response): Boolean {

        val credentialHeader = if (proxyAuthorization) "Proxy-Authorization" else "Authorization"
        val credential =
          Credentials.basic(
            auth.userName,
            String(auth.password),
            challenge.charset,
          )
        return request.newBuilder()
          .header(credentialHeader, credential)
          .build()
      }
    }

    return null // No challenges were satisfied!
  }

	flag.DurationVar(&expiryDuration, "e", 0, "Request a duration of validity for the generated credential")
	flag.StringVar(&bucketToList, "b", "mybucket", "Bucket to list (defaults to mybucket)")
}

func main() {
	flag.Parse()
	if token == "" || roleArn == "" {
		flag.PrintDefaults()
		return
	}

	// The credentials package in minio-go provides an interface to call the

        Set<Object> serverPrivateCredentials = this.subject.getPrivateCredentials();
        for ( Object credential : serverPrivateCredentials )
            if ( credential instanceof KerberosKey )
                if ( ( (KerberosKey) credential ).getKeyType() == keyType )
                    serverKey = (KerberosKey) credential;

        return serverKey;
    }


    public Subject getSubject () {
        return this.subject;

	)

	ErrInvalidRootUserCredentials = newErrFn(
		"Invalid credentials",
		"Please provide correct credentials",
		EnvRootUser+` length should be at least 3, and `+EnvRootPassword+` length at least 8 characters`,
	)

	ErrMissingEnvCredentialRootUser = newErrFn(
		"Missing credential environment variable, \""+EnvRootUser+"\"",
		"Environment variable \""+EnvRootUser+"\" is missing",

 *
 * ```java
 * if (response.request().header("Authorization") != null) {
 *   return null; // Give up, we've already failed to authenticate.
 * }
 *
 * String credential = Credentials.basic(...)
 * return response.request().newBuilder()
 *     .header("Authorization", credential)
 *     .build();
 * ```
 *
 * When reactive authentication is requested by a proxy server, the response code is 407 and the

type serverConfigV33 struct {
	quick.Config `json:"-"` // ignore interfaces

	Version string `json:"version"`

	// S3 API configuration.
	Credential auth.Credentials `json:"credential"`
	Region     string           `json:"region"`
	Worm       config.BoolFlag  `json:"worm"`

	// Storage class configuration
	StorageClass storageclass.Config `json:"storageclass"`