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Blockchain hashes: replace pattern matching with ASCII charset verification

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philsmd 2019-12-13 10:37:16 +01:00 committed by GitHub
parent a4b39b7b9c
commit 547d8ff7eb
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 99 deletions
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121
OpenCL/m12700-pure.cl
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@ -329,110 +329,33 @@ KERNEL_FQ void m12700_comp (KERN_ATTR_TMPS (mywallet_tmp_t))
AES256_decrypt (ks, data, out, s_td0, s_td1, s_td2, s_td3, s_td4);
out[0] ^= salt_bufs[salt_pos].salt_buf[0];
out[1] ^= salt_bufs[salt_pos].salt_buf[1];
out[2] ^= salt_bufs[salt_pos].salt_buf[2];
out[3] ^= salt_bufs[salt_pos].salt_buf[3];
// decrypted data should be a JSON string consisting only of ASCII chars (0x09-0x7e)
out[0] = hc_swap32_S (out[0]);
out[1] = hc_swap32_S (out[1]);
out[2] = hc_swap32_S (out[2]);
out[3] = hc_swap32_S (out[3]);
if ((out[0] & 0xff) != '{') return;
char *pt = (char *) out;
for (int i = 1; i < 16 - 6; i++)
for (u32 i = 0; i < 4; i++)
{
// "guid"
if ((pt[i + 0] == '"') && (pt[i + 1] == 'g') && (pt[i + 2] == 'u') && (pt[i + 3] == 'i') && (pt[i + 4] == 'd') && (pt[i + 5] == '"'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
out[i] ^= salt_bufs[salt_pos].salt_buf[i];
#define il_pos 0
if ((out[i] & 0xff000000) < 0x09000000) return;
if ((out[i] & 0xff000000) > 0x7e000000) return;
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
if ((out[i] & 0x00ff0000) < 0x00090000) return;
if ((out[i] & 0x00ff0000) > 0x007e0000) return;
// "tx_no
if ((pt[i + 0] == '"') && (pt[i + 1] == 't') && (pt[i + 2] == 'x') && (pt[i + 3] == '_') && (pt[i + 4] == 'n') && (pt[i + 5] == 'o'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
if ((out[i] & 0x0000ff00) < 0x00000900) return;
if ((out[i] & 0x0000ff00) > 0x00007e00) return;
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
// "share
if ((pt[i + 0] == '"') && (pt[i + 1] == 's') && (pt[i + 2] == 'h') && (pt[i + 3] == 'a') && (pt[i + 4] == 'r') && (pt[i + 5] == 'e'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
// "doubl
if ((pt[i + 0] == '"') && (pt[i + 1] == 'd') && (pt[i + 2] == 'o') && (pt[i + 3] == 'u') && (pt[i + 4] == 'b') && (pt[i + 5] == 'l'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
// "addre
if ((pt[i + 0] == '"') && (pt[i + 1] == 'a') && (pt[i + 2] == 'd') && (pt[i + 3] == 'd') && (pt[i + 4] == 'r') && (pt[i + 5] == 'e'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
// "keys"
if ((pt[i + 0] == '"') && (pt[i + 1] == 'k') && (pt[i + 2] == 'e') && (pt[i + 3] == 'y') && (pt[i + 4] == 's') && (pt[i + 5] == '"'))
{
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}
if ((out[i] & 0x000000ff) < 0x00000009) return;
if ((out[i] & 0x000000ff) > 0x0000007e) return;
}
const u32 r0 = data[0];
const u32 r1 = data[1];
const u32 r2 = data[2];
const u32 r3 = data[3];
#define il_pos 0
#ifdef KERNEL_STATIC
#include COMPARE_M
#endif
}