_ossl_ed25519_keymgmt_functions
* ossl_##impl##_to_##kind##_##output##_encoder_functions
*/
#define MAKE_ENCODER(impl, type, evp_type, kind, output) \
static OSSL_FUNC_encoder_import_object_fn \
impl##_to_##kind##_##output##_import_object; \
static OSSL_FUNC_encoder_free_object_fn \
impl##_to_##kind##_##output##_free_object; \
static OSSL_FUNC_encoder_encode_fn \
impl##_to_##kind##_##output##_encode; \
\
static void * \
impl##_to_##kind##_##output##_import_object(void *vctx, int selection, \
const OSSL_PARAM params[]) \
{ \
struct key2any_ctx_st *ctx = vctx; \
\
return ossl_prov_import_key(ossl_##impl##_keymgmt_functions, \
ctx->provctx, selection, params); \
} \
static void impl##_to_##kind##_##output##_free_object(void *key) \
{ \
ossl_prov_free_key(ossl_##impl##_keymgmt_functions, key); \
} \
static int impl##_to_##kind##_##output##_does_selection(void *ctx, \
int selection) \
{ \
return key2any_check_selection(selection, \
DO_##kind##_selection_mask); \
} \
static int \
impl##_to_##kind##_##output##_encode(void *ctx, OSSL_CORE_BIO *cout, \
const void *key, \
const OSSL_PARAM key_abstract[], \
int selection, \
OSSL_PASSPHRASE_CALLBACK *cb, \
void *cbarg) \
{ \
/* We don't deal with abstract objects */ \
if (key_abstract != NULL) { \
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT); \
return 0; \
} \
DO_##kind(impl, type, output) \
\
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT); \
return 0; \
} \
const OSSL_DISPATCH \
ossl_##impl##_to_##kind##_##output##_encoder_functions[] = { \
{ OSSL_FUNC_ENCODER_NEWCTX, \
(void (*)(void))key2any_newctx }, \
{ OSSL_FUNC_ENCODER_FREECTX, \
(void (*)(void))key2any_freectx }, \
{ OSSL_FUNC_ENCODER_SETTABLE_CTX_PARAMS, \
(void (*)(void))key2any_settable_ctx_params }, \
{ OSSL_FUNC_ENCODER_SET_CTX_PARAMS, \
(void (*)(void))key2any_set_ctx_params }, \
{ OSSL_FUNC_ENCODER_DOES_SELECTION, \
(void (*)(void))impl##_to_##kind##_##output##_does_selection }, \
{ OSSL_FUNC_ENCODER_IMPORT_OBJECT, \
(void (*)(void))impl##_to_##kind##_##output##_import_object }, \
{ OSSL_FUNC_ENCODER_FREE_OBJECT, \
(void (*)(void))impl##_to_##kind##_##output##_free_object }, \
{ OSSL_FUNC_ENCODER_ENCODE, \
(void (*)(void))impl##_to_##kind##_##output##_encode }, \
{ 0, NULL } \
}
原文地址：https://blog.csdn.net/durongze/article/details/143612960
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