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add crypt.hmac64_md5

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Cloud Wu
2017-06-21 19:05:03 +08:00
parent 933f6730b2
commit 7dd78ec89d
1 changed files with 63 additions and 13 deletions
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76
lualib-src/lua-crypt.c
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@@ -546,10 +546,8 @@ const uint32_t r[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22
// leftrotate function definition
#define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))
// hmac64 use md5 algorithm without padding, and the result is (c^d .. a^b)
static void
hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
uint32_t w[16];
digest_md5(uint32_t w[16], uint32_t result[4]) {
uint32_t a, b, c, d, f, g, temp;
int i;
@@ -558,13 +556,6 @@ hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
c = 0x98badcfeu;
d = 0x10325476u;
for (i=0;i<16;i+=4) {
w[i] = x[1];
w[i+1] = x[0];
w[i+2] = y[1];
w[i+3] = y[0];
}
for(i = 0; i<64; i++) {
if (i < 16) {
f = (b & c) | ((~b) & d);
@@ -585,11 +576,54 @@ hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
c = b;
b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
a = temp;
}
result[0] = c^d;
result[1] = a^b;
result[0] = a;
result[1] = b;
result[2] = c;
result[3] = d;
}
// hmac64 use md5 algorithm without padding, and the result is (c^d .. a^b)
static void
hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
uint32_t w[16];
uint32_t r[4];
int i;
for (i=0;i<16;i+=4) {
w[i] = x[1];
w[i+1] = x[0];
w[i+2] = y[1];
w[i+3] = y[0];
}
digest_md5(w,r);
result[0] = r[2]^r[3];
result[1] = r[0]^r[1];
}
static void
hmac_md5(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
uint32_t w[16];
uint32_t r[4];
int i;
for (i=0;i<12;i+=4) {
w[i] = x[0];
w[i+1] = x[1];
w[i+2] = y[0];
w[i+3] = y[1];
}
w[12] = 0x80;
w[13] = 0;
w[14] = 384;
w[15] = 0;
digest_md5(w,r);
result[0] = (r[0] + 0x67452301u) ^ (r[2] + 0x98badcfeu);
result[1] = (r[1] + 0xefcdab89u) ^ (r[3] + 0x10325476u);
}
static void
@@ -634,6 +668,21 @@ lhmac64(lua_State *L) {
return pushqword(L, result);
}
/*
h1 = crypt.hmac64_md5(a,b)
m = md5.sum((a..b):rep(3))
h2 = crypt.xor_str(m:sub(1,8), m:sub(9,16))
assert(h1 == h2)
*/
static int
lhmac64_md5(lua_State *L) {
uint32_t x[2], y[2];
read64(L, x, y);
uint32_t result[2];
hmac_md5(x,y,result);
return pushqword(L, result);
}
/*
8bytes key
string text
@@ -921,6 +970,7 @@ luaopen_skynet_crypt(lua_State *L) {
{ "hexencode", ltohex },
{ "hexdecode", lfromhex },
{ "hmac64", lhmac64 },
{ "hmac64_md5", lhmac64_md5 },
{ "dhexchange", ldhexchange },
{ "dhsecret", ldhsecret },
{ "base64encode", lb64encode },