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local ffi = require "ffi"
require "resty.openssl.include.ossl_typ"
require "resty.openssl.include.provider"
ffi.cdef [[
typedef struct evp_mac_st EVP_MAC;
typedef struct evp_mac_ctx_st EVP_MAC_CTX;
EVP_MAC_CTX *EVP_MAC_CTX_new(EVP_MAC *mac);
void EVP_MAC_CTX_free(EVP_MAC_CTX *ctx);
const OSSL_PROVIDER *EVP_MAC_get0_provider(const EVP_MAC *mac);
EVP_MAC *EVP_MAC_fetch(OSSL_LIB_CTX *libctx, const char *algorithm,
const char *properties);
int EVP_MAC_init(EVP_MAC_CTX *ctx, const unsigned char *key, size_t keylen,
const OSSL_PARAM params[]);
int EVP_MAC_update(EVP_MAC_CTX *ctx, const unsigned char *data, size_t datalen);
int EVP_MAC_final(EVP_MAC_CTX *ctx,
unsigned char *out, size_t *outl, size_t outsize);
size_t EVP_MAC_CTX_get_mac_size(EVP_MAC_CTX *ctx);
typedef void* fake_openssl_mac_provided_list_fn(EVP_MAC *mac, void *arg);
void EVP_MAC_do_all_provided(OSSL_LIB_CTX *libctx,
fake_openssl_mac_provided_list_fn*,
void *arg);
int EVP_MAC_up_ref(EVP_MAC *mac);
void EVP_MAC_free(EVP_MAC *mac);
const char *EVP_MAC_get0_name(const EVP_MAC *mac);
int EVP_MAC_CTX_set_params(EVP_MAC_CTX *ctx, const OSSL_PARAM params[]);
const OSSL_PARAM *EVP_MAC_CTX_settable_params(EVP_MAC_CTX *ctx);
int EVP_MAC_CTX_get_params(EVP_MAC_CTX *ctx, OSSL_PARAM params[]);
const OSSL_PARAM *EVP_MAC_CTX_gettable_params(EVP_MAC_CTX *ctx);
]]
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