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Small Bitlocker speed boost

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This commit is contained in:
Jens Steube 2019-12-31 21:27:34 +01:00
parent 268e4be7e8
commit c9c09418b4
1 changed files with 69 additions and 42 deletions
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111
OpenCL/m22100-pure.cl
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@ -107,61 +107,88 @@ KERNEL_FQ void m22100_loop (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
// init
u32x w[32] = { 0 }; // 64 bytes blocks/aligned, 88 bytes needed (22 u32 = 22 * 4)
u32x wa0[4];
u32x wa1[4];
u32x wa2[4];
u32x wa3[4];
w[ 0] = packv (tmps, last_hash, gid, 0);
w[ 1] = packv (tmps, last_hash, gid, 1);
w[ 2] = packv (tmps, last_hash, gid, 2);
w[ 3] = packv (tmps, last_hash, gid, 3);
w[ 4] = packv (tmps, last_hash, gid, 4);
w[ 5] = packv (tmps, last_hash, gid, 5);
w[ 6] = packv (tmps, last_hash, gid, 6);
w[ 7] = packv (tmps, last_hash, gid, 7);
wa0[0] = packv (tmps, last_hash, gid, 0); // last_hash
wa0[1] = packv (tmps, last_hash, gid, 1);
wa0[2] = packv (tmps, last_hash, gid, 2);
wa0[3] = packv (tmps, last_hash, gid, 3);
wa1[0] = packv (tmps, last_hash, gid, 4);
wa1[1] = packv (tmps, last_hash, gid, 5);
wa1[2] = packv (tmps, last_hash, gid, 6);
wa1[3] = packv (tmps, last_hash, gid, 7);
wa2[0] = packv (tmps, init_hash, gid, 0); // init_hash
wa2[1] = packv (tmps, init_hash, gid, 1);
wa2[2] = packv (tmps, init_hash, gid, 2);
wa2[3] = packv (tmps, init_hash, gid, 3);
wa3[0] = packv (tmps, init_hash, gid, 4);
wa3[1] = packv (tmps, init_hash, gid, 5);
wa3[2] = packv (tmps, init_hash, gid, 6);
wa3[3] = packv (tmps, init_hash, gid, 7);
w[ 8] = packv (tmps, init_hash, gid, 0);
w[ 9] = packv (tmps, init_hash, gid, 1);
w[10] = packv (tmps, init_hash, gid, 2);
w[11] = packv (tmps, init_hash, gid, 3);
w[12] = packv (tmps, init_hash, gid, 4);
w[13] = packv (tmps, init_hash, gid, 5);
w[14] = packv (tmps, init_hash, gid, 6);
w[15] = packv (tmps, init_hash, gid, 7);
u32x wb0[4];
u32x wb1[4];
u32x wb2[4];
u32x wb3[4];
w[16] = packv (tmps, salt, gid, 0);
w[17] = packv (tmps, salt, gid, 1);
w[18] = packv (tmps, salt, gid, 2);
w[19] = packv (tmps, salt, gid, 3);
wb0[0] = packv (tmps, salt, gid, 0);
wb0[1] = packv (tmps, salt, gid, 1);
wb0[2] = packv (tmps, salt, gid, 2);
wb0[3] = packv (tmps, salt, gid, 3);
wb1[0] = 0;
wb1[1] = 0;
wb1[2] = 0x80000000;
wb1[3] = 0;
wb2[0] = 0;
wb2[1] = 0;
wb2[2] = 0;
wb2[3] = 0;
wb3[0] = 0;
wb3[1] = 0;
wb3[2] = 0;
wb3[3] = 88 * 8;
// main loop
for (u32 i = 0, j = loop_pos; i < loop_cnt; i++, j++)
{
w[20] = hc_swap32 (j);
wb1[0] = hc_swap32 (j);
sha256_ctx_vector_t ctx;
u32 digest[8];
sha256_init_vector (&ctx);
sha256_update_vector (&ctx, w, 88);
sha256_final_vector (&ctx);
digest[0] = SHA256M_A;
digest[1] = SHA256M_B;
digest[2] = SHA256M_C;
digest[3] = SHA256M_D;
digest[4] = SHA256M_E;
digest[5] = SHA256M_F;
digest[6] = SHA256M_G;
digest[7] = SHA256M_H;
w[0] = ctx.h[0];
w[1] = ctx.h[1];
w[2] = ctx.h[2];
w[3] = ctx.h[3];
w[4] = ctx.h[4];
w[5] = ctx.h[5];
w[6] = ctx.h[6];
w[7] = ctx.h[7];
sha256_transform_vector (wa0, wa1, wa2, wa3, digest);
sha256_transform_vector (wb0, wb1, wb2, wb3, digest); // this one gives the boost
wa0[0] = digest[0];
wa0[1] = digest[1];
wa0[2] = digest[2];
wa0[3] = digest[3];
wa1[0] = digest[4];
wa1[1] = digest[5];
wa1[2] = digest[6];
wa1[3] = digest[7];
}
unpackv (tmps, last_hash, gid, 0, w[0]);
unpackv (tmps, last_hash, gid, 1, w[1]);
unpackv (tmps, last_hash, gid, 2, w[2]);
unpackv (tmps, last_hash, gid, 3, w[3]);
unpackv (tmps, last_hash, gid, 4, w[4]);
unpackv (tmps, last_hash, gid, 5, w[5]);
unpackv (tmps, last_hash, gid, 6, w[6]);
unpackv (tmps, last_hash, gid, 7, w[7]);
unpackv (tmps, last_hash, gid, 0, wa0[0]);
unpackv (tmps, last_hash, gid, 1, wa0[1]);
unpackv (tmps, last_hash, gid, 2, wa0[2]);
unpackv (tmps, last_hash, gid, 3, wa0[3]);
unpackv (tmps, last_hash, gid, 4, wa1[0]);
unpackv (tmps, last_hash, gid, 5, wa1[1]);
unpackv (tmps, last_hash, gid, 6, wa1[2]);
unpackv (tmps, last_hash, gid, 7, wa1[3]);
}
KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))