570721ddf5
This patch ports the implementation of PrivateKey.Validate to use the bigmod math library, ensuring that the arithmetic operations happen in constant time. A few new APIs have been added to bigmod to add operations which don't explicitly require modulus arithmetic, but do take the modulus size into account to ensure we don't leak any non-public information. In addition to porting this routine to use bigmod this patch also adds a few more steps to the validation as defined by NIST SP 800-56B REV. 2 Section 6.4.1.4.3. For #69536 |
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SECURITY.md |
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