MINIO_IDENTITY_LDAP_USER_DN_SEARCH_FILTER   (string)    Search filter to lookup user DN
MINIO_IDENTITY_LDAP_USER_DN_ATTRIBUTES      (list)      "," separated list of user DN attributes e.g. "uid,cn,mail,sshPublicKey"
MINIO_IDENTITY_LDAP_GROUP_SEARCH_FILTER     (string)    search filter for groups e.g. "(&(objectclass=groupOfNames)(memberUid=%s))"

		// we skip multi-value attributes here, as they cannot
		// be stored in the critical options.
		if len(attribValue) != 1 {
			continue
		}

		if attribKey == "sshPublicKey" && key != nil {
			key2, _, _, _, err := ssh.ParseAuthorizedKey([]byte(attribValue[0]))
			if err != nil {
				return nil, errSFTPPublicKeyBadFormat
			}