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Fixed false negative in hash-mode 15900 (DPAPI masterkey file v2) if password was longer than 64 characters.

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Bug was also present in SHA512 based TC and VC kernels, but had no effect because maximum password length is 64.
This commit is contained in:
Jens Steube 2021-06-16 12:13:04 +02:00
parent 2d7f67fd23
commit 8548af5e79
8 changed files with 8 additions and 7 deletions
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2
OpenCL/m06221-pure.cl
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@ -228,7 +228,7 @@ KERNEL_FQ void m06221_init (KERN_ATTR_TMPS_ESALT (tc64_tmp_t, tc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m06222-pure.cl
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@ -228,7 +228,7 @@ KERNEL_FQ void m06222_init (KERN_ATTR_TMPS_ESALT (tc64_tmp_t, tc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m06223-pure.cl
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@ -228,7 +228,7 @@ KERNEL_FQ void m06223_init (KERN_ATTR_TMPS_ESALT (tc64_tmp_t, tc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m13721-pure.cl
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@ -270,7 +270,7 @@ KERNEL_FQ void m13721_init (KERN_ATTR_TMPS_ESALT (vc64_tmp_t, vc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m13722-pure.cl
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@ -321,7 +321,7 @@ KERNEL_FQ void m13722_init (KERN_ATTR_TMPS_ESALT (vc64_tmp_t, vc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m13723-pure.cl
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@ -386,7 +386,7 @@ KERNEL_FQ void m13723_init (KERN_ATTR_TMPS_ESALT (vc64_tmp_t, vc_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad[1] = sha512_hmac_ctx.ipad.h[1];

2
OpenCL/m15900-pure.cl
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@ -255,7 +255,7 @@ KERNEL_FQ void m15900_init (KERN_ATTR_TMPS_ESALT (dpapimk_tmp_v2_t, dpapimk_t))
sha512_hmac_ctx_t sha512_hmac_ctx;
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w5, w5, w6, w7);
sha512_hmac_init_128 (&sha512_hmac_ctx, w0, w1, w2, w3, w4, w5, w6, w7);
tmps[gid].ipad64[0] = sha512_hmac_ctx.ipad.h[0];
tmps[gid].ipad64[1] = sha512_hmac_ctx.ipad.h[1];

1
docs/changes.txt
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@ -5,6 +5,7 @@
##
- Fixed 'E' rule in pure kernel mode which was ignoring letters that are in positions that are multiples of 4
- Fixed false negative in hash-mode 15900 (DPAPI masterkey file v2) if password was longer than 64 characters
##
## Improvements