sign_external Method
Signs the document using an external signing facility.
Syntax
def sign_external(level: int, detached: bool) -> None: ...
Remarks
Use this method to create a CAdES signature using an external signing facility for the cryptographic computations. SignRemote delegates the low-level signing operation to an external, remote, or custom signing engine. This method is useful if the signature has to be made by a device accessible through a custom or non-standard signing interface.
When all preparations are done and hash is computed, the class fires on_external_sign event which allows to pass the hash value for signing.
Set Detached to True to generate a detached (stored in a separate message) signature.
CAdES defines a number of different 'levels' of signatures. Supported signature levels:
cslUnknown | 0 | Unknown signature level |
cslBES | 1 | BES (Basic Electronic Signature) |
cslEPES | 2 | EPES (Electronic Signature with an Explicit Policy) |
cslT | 3 | T (Timestamped) |
cslC | 4 | C (T with revocation references) |
cslXType1 | 5 | X Type 1 (C with an ES-C timestamp) |
cslXType2 | 6 | X Type 2 (C with a CertsAndCRLs timestamp) |
cslXLType1 | 7 | XL Type 1 (C with revocation values and an ES-C timestamp) |
cslXLType2 | 8 | XL Type 2 (C with revocation values and a CertsAndCRLs timestamp) |
cslBaselineB | 9 | Baseline B (B-B, basic) |
cslBaselineT | 10 | Baseline T (B-T, timestamped) |
cslBaselineLT | 11 | Baseline LT (B-LT, long-term) |
cslBaselineLTA | 12 | Baseline LTA (B-LTA, long-term with archived timestamp) |
cslExtendedBES | 13 | Extended BES |
cslExtendedEPES | 14 | Extended EPES |
cslExtendedT | 15 | Extended T |
cslExtendedC | 16 | Extended C |
cslExtendedXType1 | 17 | Extended X Type 1 |
cslExtendedXType2 | 18 | Extended X Type 2 |
cslExtendedXLType1 | 19 | Extended XL Type 1 |
cslExtendedXLType2 | 20 | Extended XL Type 2 |
cslExtendedA | 21 | Extended A |
cslA | 22 | A (archived) |