EVP_PKEY_meth_get_count, EVP_PKEY_meth_get0, EVP_PKEY_meth_get0_info - enumerate public key methods
#include <openssl/evp.h>
size_t EVP_PKEY_meth_get_count(void);
const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx);
void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
const EVP_PKEY_METHOD *meth);EVP_PKEY_meth_count() returns a count of the number of public key methods available: it includes standard methods and any methods added by the application.
EVP_PKEY_meth_get0() returns the public key method idx. The value of idx must be between zero and EVP_PKEY_meth_get_count() - 1.
EVP_PKEY_meth_get0_info() returns the public key ID (a NID) and any flags associated with the public key method *meth.
EVP_PKEY_meth_count() returns the number of available public key methods.
EVP_PKEY_meth_get0() return a public key method or NULL if idx is out of range.
EVP_PKEY_meth_get0_info() does not return a value.
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