Implement SM2 & ML-DSA-65 Hybrid Signature Algorithm #756
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This PR implements an experimental SM2 and ML-DSA-65 hybrid signature algorithm.
The hybrid signature scheme is based on the IETF draft. The OID for this algorithm is temporarily assigned to an unused field under the
CompSigdomain proposed in the draft, namely<CompSig>.21(2.16.840.1.114027.80.9.1.21). All other signature details follow the draft specification.For easier review, the implementation is split into multiple commits, each corresponding to a specific functional change.
The corresponding documentation can be found in PR.