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minor change to minimize the number of xor instructions

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This commit is contained in:
Russell Jancewicz 2022-10-13 14:06:24 -04:00
parent f0023229b6
commit cd407b7af8
1 changed files with 41 additions and 70 deletions
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111
OpenCL/m07350_a0-optimized.cl
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@ -16,24 +16,28 @@
#include M2S(INCLUDE_PATH/inc_hash_md5.cl)
#endif
#define DIGEST_SIZE_BYTES 16
#define BLOCK_SIZE_BYTES 64
DECLSPEC void hmac_md5_pad (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS u32x *w2, PRIVATE_AS u32x *w3, PRIVATE_AS u32x *ipad, PRIVATE_AS u32x *opad)
{
w0[0] = w0[0] ^ 0x36363636;
w0[1] = w0[1] ^ 0x36363636;
w0[2] = w0[2] ^ 0x36363636;
w0[3] = w0[3] ^ 0x36363636;
w1[0] = w1[0] ^ 0x36363636;
w1[1] = w1[1] ^ 0x36363636;
w1[2] = w1[2] ^ 0x36363636;
w1[3] = w1[3] ^ 0x36363636;
w2[0] = w2[0] ^ 0x36363636;
w2[1] = w2[1] ^ 0x36363636;
w2[2] = w2[2] ^ 0x36363636;
w2[3] = w2[3] ^ 0x36363636;
w3[0] = w3[0] ^ 0x36363636;
w3[1] = w3[1] ^ 0x36363636;
w3[2] = w3[2] ^ 0x36363636;
w3[3] = w3[3] ^ 0x36363636;
w0[0] ^= 0x36363636;
w0[1] ^= 0x36363636;
w0[2] ^= 0x36363636;
w0[3] ^= 0x36363636;
w1[0] ^= 0x36363636;
w1[1] ^= 0x36363636;
w1[2] ^= 0x36363636;
w1[3] ^= 0x36363636;
w2[0] = 0x36363636;
w2[1] = 0x36363636;
w2[2] = 0x36363636;
w2[3] = 0x36363636;
w3[0] = 0x36363636;
w3[1] = 0x36363636;
w3[2] = 0x36363636;
w3[3] = 0x36363636;
ipad[0] = MD5M_A;
ipad[1] = MD5M_B;
@ -42,22 +46,25 @@ DECLSPEC void hmac_md5_pad (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS
md5_transform_vector (w0, w1, w2, w3, ipad);
w0[0] = w0[0] ^ 0x6a6a6a6a;
w0[1] = w0[1] ^ 0x6a6a6a6a;
w0[2] = w0[2] ^ 0x6a6a6a6a;
w0[3] = w0[3] ^ 0x6a6a6a6a;
w1[0] = w1[0] ^ 0x6a6a6a6a;
w1[1] = w1[1] ^ 0x6a6a6a6a;
w1[2] = w1[2] ^ 0x6a6a6a6a;
w1[3] = w1[3] ^ 0x6a6a6a6a;
w2[0] = w2[0] ^ 0x6a6a6a6a;
w2[1] = w2[1] ^ 0x6a6a6a6a;
w2[2] = w2[2] ^ 0x6a6a6a6a;
w2[3] = w2[3] ^ 0x6a6a6a6a;
w3[0] = w3[0] ^ 0x6a6a6a6a;
w3[1] = w3[1] ^ 0x6a6a6a6a;
w3[2] = w3[2] ^ 0x6a6a6a6a;
w3[3] = w3[3] ^ 0x6a6a6a6a;
// 0x36 ^ 0x5c = 0x6a
w0[0] ^= 0x6a6a6a6a;
w0[1] ^= 0x6a6a6a6a;
w0[2] ^= 0x6a6a6a6a;
w0[3] ^= 0x6a6a6a6a;
w1[0] ^= 0x6a6a6a6a;
w1[1] ^= 0x6a6a6a6a;
w1[2] ^= 0x6a6a6a6a;
w1[3] ^= 0x6a6a6a6a;
w2[0] = 0x5c5c5c5c;
w2[1] = 0x5c5c5c5c;
w2[2] = 0x5c5c5c5c;
w2[3] = 0x5c5c5c5c;
w3[0] = 0x5c5c5c5c;
w3[1] = 0x5c5c5c5c;
w3[2] = 0x5c5c5c5c;
w3[3] = 0x5c5c5c5c;
opad[0] = MD5M_A;
opad[1] = MD5M_B;
@ -67,40 +74,6 @@ DECLSPEC void hmac_md5_pad (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS
md5_transform_vector (w0, w1, w2, w3, opad);
}
DECLSPEC void hmac_md5_run (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS u32x *w2, PRIVATE_AS u32x *w3, PRIVATE_AS u32x *ipad, PRIVATE_AS u32x *opad, PRIVATE_AS u32x *digest)
{
digest[0] = ipad[0];
digest[1] = ipad[1];
digest[2] = ipad[2];
digest[3] = ipad[3];
md5_transform_vector (w0, w1, w2, w3, digest);
w0[0] = digest[0];
w0[1] = digest[1];
w0[2] = digest[2];
w0[3] = digest[3];
w1[0] = 0x80;
w1[1] = 0;
w1[2] = 0;
w1[3] = 0;
w2[0] = 0;
w2[1] = 0;
w2[2] = 0;
w2[3] = 0;
w3[0] = 0;
w3[1] = 0;
w3[2] = (64 + 16) * 8;
w3[3] = 0;
digest[0] = opad[0];
digest[1] = opad[1];
digest[2] = opad[2];
digest[3] = opad[3];
md5_transform_vector (w0, w1, w2, w3, digest);
}
KERNEL_FQ void m07350_m04 (KERN_ATTR_RULES ())
{
/**
@ -387,7 +360,7 @@ KERNEL_FQ void m07350_s04 (KERN_ATTR_RULES ())
w2[3] = 0;
w3[0] = 0;
w3[1] = 0;
w3[2] = (64 + salt_len) * 8;
w3[2] = (BLOCK_SIZE_BYTES + salt_len) * 8;
w3[3] = 0;
md5_transform_vector(w0, w1, w2, w3, ipad);
@ -406,13 +379,11 @@ KERNEL_FQ void m07350_s04 (KERN_ATTR_RULES ())
w2[3] = 0;
w3[0] = 0;
w3[1] = 0;
w3[2] = (64 + 16) * 8;
w3[2] = (BLOCK_SIZE_BYTES + DIGEST_SIZE_BYTES) * 8;
w3[3] = 0;
md5_transform_vector (w0, w1, w2, w3, opad);
// hmac_md5_run (w0, w1, w2, w3, ipad, opad, digest);
COMPARE_S_SIMD (opad[0], opad[3], opad[2], opad[1]);
}
}