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local ffi = require "ffi"
require "resty.openssl.include.ossl_typ"
require "resty.openssl.include.evp"
local OPENSSL_10 = require("resty.openssl.version").OPENSSL_10
local OPENSSL_11_OR_LATER = require("resty.openssl.version").OPENSSL_11_OR_LATER
local BORINGSSL = require("resty.openssl.version").BORINGSSL
if BORINGSSL then
ffi.cdef [[
int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
const EVP_MD *md, ENGINE *impl);
]]
else
ffi.cdef [[
int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
const EVP_MD *md, ENGINE *impl);
]]
end
ffi.cdef [[
int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
size_t len);
int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
unsigned int *len);
]]
if OPENSSL_11_OR_LATER then
ffi.cdef [[
HMAC_CTX *HMAC_CTX_new(void);
void HMAC_CTX_free(HMAC_CTX *ctx);
]]
elseif OPENSSL_10 then
ffi.cdef [[
// # define HMAC_MAX_MD_CBLOCK 128/* largest known is SHA512 */
struct hmac_ctx_st {
const EVP_MD *md;
EVP_MD_CTX md_ctx;
EVP_MD_CTX i_ctx;
EVP_MD_CTX o_ctx;
unsigned int key_length;
unsigned char key[128];
};
void HMAC_CTX_init(HMAC_CTX *ctx);
void HMAC_CTX_cleanup(HMAC_CTX *ctx);
]]
end
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