ENGINE ASN.1 method handler: list supported NIDs or return an EVP_PKEY_ASN1_METHOD.
Synopsis
Declared in <openssl/engine.h>
typedef int(* ENGINE_PKEY_ASN1_METHS_PTR)(ENGINE*, EVP_PKEY_ASN1_METHOD**, int const**, int);
Description
Same calling convention as ENGINE_DIGESTS_PTR / ENGINE_CIPHERS_PTR: fetch by NID when the method out‐parameter is non‐NULL, otherwise enumerate NIDs.
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