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add hmac_hash to simplify hmac64(hashkey(d), key)

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Cloud Wu
2015-04-16 10:35:47 +08:00
parent f55a31c24f
commit 57c0ad694c
1 changed files with 36 additions and 5 deletions
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41
lualib-src/lua-crypt.c
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@@ -602,11 +602,7 @@ read64(lua_State *L, uint32_t xx[2], uint32_t yy[2]) {
}
static int
lhmac64(lua_State *L) {
uint32_t x[2], y[2];
read64(L, x, y);
uint32_t result[2];
hmac(x,y,result);
pushqword(lua_State *L, uint32_t result[2]) {
uint8_t tmp[8];
tmp[0] = result[0] & 0xff;
tmp[1] = (result[0] >> 8 )& 0xff;
@@ -621,6 +617,40 @@ lhmac64(lua_State *L) {
return 1;
}
static int
lhmac64(lua_State *L) {
uint32_t x[2], y[2];
read64(L, x, y);
uint32_t result[2];
hmac(x,y,result);
return pushqword(L, result);
}
/*
8bytes key
string text
*/
static int
lhmac_hash(lua_State *L) {
uint32_t key[2];
size_t sz = 0;
const uint8_t *x = (const uint8_t *)luaL_checklstring(L, 1, &sz);
if (sz != 8) {
luaL_error(L, "Invalid uint64 key");
}
key[0] = x[0] | x[1]<<8 | x[2]<<16 | x[3]<<24;
key[1] = x[4] | x[5]<<8 | x[6]<<16 | x[7]<<24;
const char * text = luaL_checklstring(L, 2, &sz);
uint8_t h[8];
Hash(text,(int)sz,h);
uint32_t htext[2];
htext[0] = h[0] | h[1]<<8 | h[2]<<16 | h[3]<<24;
htext[1] = h[4] | h[5]<<8 | h[6]<<16 | h[7]<<24;
uint32_t result[2];
hmac(htext,key,result);
return pushqword(L, result);
}
// powmodp64 for DH-key exchange
// The biggest 64bit prime
@@ -858,6 +888,7 @@ luaopen_crypt(lua_State *L) {
{ "base64decode", lb64decode },
{ "sha1", lsha1 },
{ "hmac_sha1", lhmac_sha1 },
{ "hmac_hash", lhmac_hash },
{ NULL, NULL },
};
luaL_newlib(L,l);