<PackageReference Include="BouncyCastle.Cryptography" Version="2.5.1" />

AltSignatureAlgorithm

public static AltSignatureAlgorithm GetInstance(object obj)

public static AltSignatureAlgorithm GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)

public static AltSignatureAlgorithm GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit)