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Cracking bcrypt: Use a feedback from the OpenCL runtime to dynamically find out optimal thread count

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This commit is contained in:
jsteube
2019-03-17 14:17:35 +01:00
parent 42e440611a
commit 5ecbcde945
3 changed files with 58 additions and 36 deletions
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OpenCL/m03200-pure.cl
+30 -25
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@@ -299,16 +299,21 @@ __constant u32a c_sbox3[256] =
0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
};
#define BF_ROUND(L,R,N) \
{ \
u32 tmp; \
\
tmp = S0[hc_bfe_S ((L), 24, 8)]; \
tmp += S1[hc_bfe_S ((L), 16, 8)]; \
tmp ^= S2[hc_bfe_S ((L), 8, 8)]; \
tmp += S3[hc_bfe_S ((L), 0, 8)]; \
\
(R) ^= tmp ^ P[(N)]; \
#define BF_ROUND(L,R,N) \
{ \
u32 tmp; \
\
const u32 r0 = hc_bfe_S ((L), 24, 8); \
const u32 r1 = hc_bfe_S ((L), 16, 8); \
const u32 r2 = hc_bfe_S ((L), 8, 8); \
const u32 r3 = hc_bfe_S ((L), 0, 8); \
\
tmp = S0[r0]; \
tmp += S1[r1]; \
tmp ^= S2[r2]; \
tmp += S3[r3]; \
\
(R) ^= tmp ^ P[(N)]; \
}
#define BF_ENCRYPT(L,R) \
@@ -361,7 +366,7 @@ DECLSPEC void expand_key (u32 *E, u32 *W, const int len)
}
}
__kernel void m03200_init (KERN_ATTR_TMPS (bcrypt_tmp_t))
__kernel void __attribute__((reqd_work_group_size(FIXED_LOCAL_SIZE, 1, 1))) m03200_init (KERN_ATTR_TMPS (bcrypt_tmp_t))
{
/**
* base
@@ -438,10 +443,10 @@ __kernel void m03200_init (KERN_ATTR_TMPS (bcrypt_tmp_t))
* do the key setup
*/
__local u32 S0_all[8][256];
__local u32 S1_all[8][256];
__local u32 S2_all[8][256];
__local u32 S3_all[8][256];
__local u32 S0_all[FIXED_LOCAL_SIZE][256];
__local u32 S1_all[FIXED_LOCAL_SIZE][256];
__local u32 S2_all[FIXED_LOCAL_SIZE][256];
__local u32 S3_all[FIXED_LOCAL_SIZE][256];
__local u32 *S0 = S0_all[lid];
__local u32 *S1 = S1_all[lid];
@@ -580,7 +585,7 @@ __kernel void m03200_init (KERN_ATTR_TMPS (bcrypt_tmp_t))
}
}
__kernel void m03200_loop (KERN_ATTR_TMPS (bcrypt_tmp_t))
__kernel void __attribute__((reqd_work_group_size(FIXED_LOCAL_SIZE, 1, 1))) m03200_loop (KERN_ATTR_TMPS (bcrypt_tmp_t))
{
/**
* base
@@ -607,10 +612,10 @@ __kernel void m03200_loop (KERN_ATTR_TMPS (bcrypt_tmp_t))
P[i] = tmps[gid].P[i];
}
__local u32 S0_all[8][256];
__local u32 S1_all[8][256];
__local u32 S2_all[8][256];
__local u32 S3_all[8][256];
__local u32 S0_all[FIXED_LOCAL_SIZE][256];
__local u32 S1_all[FIXED_LOCAL_SIZE][256];
__local u32 S2_all[FIXED_LOCAL_SIZE][256];
__local u32 S3_all[FIXED_LOCAL_SIZE][256];
__local u32 *S0 = S0_all[lid];
__local u32 *S1 = S1_all[lid];
@@ -778,7 +783,7 @@ __kernel void m03200_loop (KERN_ATTR_TMPS (bcrypt_tmp_t))
}
}
__kernel void m03200_comp (KERN_ATTR_TMPS (bcrypt_tmp_t))
__kernel void __attribute__((reqd_work_group_size(FIXED_LOCAL_SIZE, 1, 1))) m03200_comp (KERN_ATTR_TMPS (bcrypt_tmp_t))
{
/**
* base
@@ -798,10 +803,10 @@ __kernel void m03200_comp (KERN_ATTR_TMPS (bcrypt_tmp_t))
P[i] = tmps[gid].P[i];
}
__local u32 S0_all[8][256];
__local u32 S1_all[8][256];
__local u32 S2_all[8][256];
__local u32 S3_all[8][256];
__local u32 S0_all[FIXED_LOCAL_SIZE][256];
__local u32 S1_all[FIXED_LOCAL_SIZE][256];
__local u32 S2_all[FIXED_LOCAL_SIZE][256];
__local u32 S3_all[FIXED_LOCAL_SIZE][256];
__local u32 *S0 = S0_all[lid];
__local u32 *S1 = S1_all[lid];