1XXX: CertificateError
    1000: Unknown
    1001: ReadFailed
    1002: DecodeFailed
    1003: ParseFailed
    1100: SelfSigned
    12XX: VerifyFailed
        121X: CertificateInvalid
            1210: NotAuthorizedToSign
            1211: Expired
            1212: CANotAuthorizedForThisName
            1213: TooManyIntermediates
            1214: IncompatibleUsage
        1220: UnknownAuthority
    1300: BadRequest
    1400: MissingSerial
2XXX: PrivateKeyError
    2000: Unknown
    2001: ReadFailed
    2002: DecodeFailed
    2003: ParseFailed
    2100: Encrypted
    2200: NotRSA
    2300: KeyMismatch
3XXX: IntermediatesError
4XXX: RootError
5XXX: PolicyError
    5100: NoKeyUsages
    5200: InvalidPolicy
    5300: InvalidRequest
    5400: UnknownProfile
    5500: UnmatchedWhitelist
6XXX: DialError
7XXX: APIClientError
    7100: AuthenticationFailure
    7200: JSONError
    7300: IOError
    7400: ClientHTTPError
    7500: ServerRequestFailed
8XXX: OCSPError
    8001: ReadFailed
    8100: IssuerMismatch
    8200: InvalidStatus
9XXX: CSRError
    9001: ReadFailed
    9002: DecodeFailed
    9003: ParseFailed
    9300: BadRequest
10XXX: CTError
    10000: Unknown
    10100: PrecertSubmissionFailed
11XXX: CertStoreError
    11100: InsertFailed
    11200: RecordNotFound