Remove schema checks in securesystemslib.gpg #775
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In preparation for the removal of schema.py (secure-systems-lab#183), this patch removes schema checks in the following modules of the `securesystemslib.gpg` subpackage: * internal modules `rsa`, `dsa`, `eddsa`, `common`. These checks are redundant with schema checks that are already performed in the calling functions of the `functions` module. * in previously public `functions` module: * keyid in `create_signature` and `export_pubkey` functions * public key and signature dict in `verify_signature` function This is okay for two reasons: 1. the preferred way of interacting with `securesystemslib.gpg.functions` is via `GPGSigner`, which controls the format of the passed arguments to some extent 2. securesystemslib.gpg still raises meaningful and even more consistent errors for invalid arguments anyway, than it did before. E.g. a keyid passed to `export_pubkey` that doesn't conform to the previously checked hex schema, now raises a `KeyNotFoundError`. Other changes include: * move string literal `GPG_HASH_ALGORITHM_STRING` from `securesystemslib.schema` to the better suited `secureystemslib.gpg.constants` module. * remove mentions of schema definitions in docstrings * adopt changes in tests Signed-off-by: Lukas Puehringer <[email protected]>
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blocks on #772 (commits are included in this PR)In preparation for the removal of schema.py (#183), this patch removes schema checks in the following modules of the
securesystemslib.gpgsubpackage:internal modules
rsa,dsa,eddsa,common. These checks are redundant with schema checks that are already performed in the calling functions of thefunctionsmodule.in previously public
functionsmodule:create_signatureandexport_pubkeyfunctionsverify_signaturefunctionThis is okay for two reasons:
the preferred way of interacting with
securesystemslib.gpg.functionsis viaGPGSigner, which controls the format of the passed arguments to some extentsecuresystemslib.gpg still raises meaningful and even more consistent errors for invalid arguments anyway, than it did before. E.g. a keyid passed to
export_pubkeythat doesn't conform to the previously checked hex schema, now raises aKeyNotFoundError.Other changes include:
GPG_HASH_ALGORITHM_STRINGfromsecuresystemslib.schemato the better suitedsecureystemslib.gpg.constantsmodule.