Some EC_Group usage cleanups #4038
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reneme
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May 24, 2024
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| /** | ||
| * Create an EC domain from PEM encoding (as from PEM_encode), or | ||
| * from an OID name (eg "secp256r1", or "1.2.840.10045.3.1.7") | ||
| * @param pem_or_oid PEM-encoded data, or an OID | ||
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| * | ||
| * @warning Support for PEM in this function is deprecated. Use | ||
| * EC_Group_from_PEM | ||
| * EC_Group::from_PEM or EC_Group::from_OID or EC_Group::from_name | ||
| */ | ||
| explicit EC_Group(std::string_view pem_or_oid); | ||
| BOTAN_DEPRECATED("Use EC_Group::from_{name,OID,PEM}") explicit EC_Group(std::string_view pem_or_oid); |
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Full ack on splitting this initialization functionality into several factory methods. Less magic!
This hides all symbols of CurveGFp and CurveGFp_Repr (which were already marked as BOTAN_UNSTABLE_API and intentionally undocumented) and makes them accessible only to a few specific friends. For EC_Point deprecate a number of functions only needed for internal use. Also add a couple of functions to simplify a future bridge between our current APIs and pcurves. In EC_Group likewise begin some cleanup and deprecation.
Unlike the existing (deprecated) constructor, this constructor requires an OID, does not accept a cofactor, limits the field to at most 521 bits, and performs basic validation of the arguments.
Co-authored-by: René Meusel <github@renemeusel.de>
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This hides all symbols of CurveGFp and CurveGFp_Repr (which were already marked as BOTAN_UNSTABLE_API and intentionally undocumented) and makes them accessible only to a few specific friends.
For EC_Point deprecate a number of functions only needed for internal use. Also add a couple of functions to simplify a future bridge between our current APIs and pcurves.
In EC_Group likewise begin some cleanup and deprecation.