EVP_PKEY_OP_TYPE_CRYPT

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C) nothrow
enum EVP_PKEY_OP_TYPE_CRYPT = (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT);

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