return "", err
	}

	s := base64.RawStdEncoding.EncodeToString(key)
	return strings.ReplaceAll(s, "/", "+"), nil
}

// GetNewCredentialsWithMetadata generates and returns new credential with expiry.
func GetNewCredentialsWithMetadata(m map[string]interface{}, tokenSecret string) (Credentials, error) {
	accessKey, secretKey, err := GenerateCredentials()
	if err != nil {
		return Credentials{}, err
	}

		return
	}

	secret, err := getTokenSigningKey()
	if err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSInternalError, err)
		return
	}

	cred, err := auth.GetNewCredentialsWithMetadata(claims, secret)
	if err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSInternalError, err)
		return
	}

	// Set the parent of the temporary access key, so that it's access

			// Add LDAP attributes that were looked up into the claims.
			for attribKey, attribValue := range lookupResult.Attributes {
				claims[ldapAttribPrefix+attribKey] = attribValue
			}

			cred, err := auth.GetNewCredentialsWithMetadata(claims, globalActiveCred.SecretKey)
			if err != nil {
				return nil, err
			}

			// Set the parent of the temporary access key, this is useful
			// in obtaining service accounts by this cred.

	if err != nil {
		return nil, err
	}

	claims[expClaim] = UTCNow().Add(expiryDur).Unix()
	claims[ldapUserN] = user
	claims[ldapUser] = lookupResult.NormDN

	cred, err := auth.GetNewCredentialsWithMetadata(claims, globalActiveCred.SecretKey)
	if err != nil {
		return nil, err
	}

	// Set the parent of the temporary access key, this is useful
	// in obtaining service accounts by this cred.