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Replace sha1_update_swap() with sha1_update()

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Move hc_bytealign_be_S() to kernel
Remove invalid use of NEW_SIMD_CODE
Replace hc_bytealign_be_S() with hc_bytealign_le_S()
Change zero strategy in memzero_le_S()
This commit is contained in:
Jens Steube 2021-09-04 18:32:00 +02:00
parent af40ec0640
commit 76facb56cf
2 changed files with 89 additions and 47 deletions
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133
OpenCL/m17010-pure.cl
View File

@ -3,7 +3,7 @@
* License.....: MIT
*/
#define NEW_SIMD_CODE
//#define NEW_SIMD_CODE
#ifdef KERNEL_STATIC
#include "inc_vendor.h"
@ -18,9 +18,9 @@ typedef struct gpg
{
u32 cipher_algo;
u32 iv[4];
u32 modulus_size;
u32 modulus_size;
u32 encrypted_data[384];
u32 encrypted_data_size;
u32 encrypted_data_size;
} gpg_t;
@ -42,31 +42,58 @@ typedef struct gpg_tmp
} gpg_tmp_t;
DECLSPEC void memcat_be_S (u32 *block, const u32 offset, const u32 *append, u32 len)
DECLSPEC u32 hc_bytealign_le_S (const u32 a, const u32 b, const int c)
{
const int c_mod_4 = c & 3;
const u32 r = hc_byte_perm_S (b, a, (0x76543210 >> (c_mod_4 * 4)) & 0xffff);
return r;
}
DECLSPEC void memcat_le_S (u32 *block, const u32 offset, const u32 *append, u32 len)
{
const u32 start_index = (offset - 1) >> 2;
const u32 count = ((offset + len + 3) >> 2) - start_index;
const int off_mod_4 = offset & 3;
const int off_minus_4 = 4 - off_mod_4;
block[start_index] |= hc_bytealign_be_S (append[0], 0, off_minus_4);
block[start_index] |= hc_bytealign_le_S (append[0], 0, off_minus_4);
for (u32 idx = 1; idx < count; idx++)
{
block[start_index + idx] = hc_bytealign_be_S (append[idx], append[idx - 1], off_minus_4);
block[start_index + idx] = hc_bytealign_le_S (append[idx], append[idx - 1], off_minus_4);
}
}
DECLSPEC void memzero_le_S (u32 *block, const u32 start_offset, const u32 end_offset)
{
const u32 start_idx = start_offset / 4;
// zero out bytes in the first u32 starting from 'start_offset'
block[start_idx] &= 0xffffffff >> ((4 - (start_offset & 3)) * 8);
const u32 end_idx = (end_offset + 3) / 4;
// zero out bytes in u32 units -- note that the last u32 is completely zeroed!
for (u32 i = start_idx + 1; i < end_idx; i++)
{
block[i] = 0;
}
}
DECLSPEC void memzero_be_S (u32 *block, const u32 start_offset, const u32 end_offset)
{
const u32 start_idx = (start_offset + 3) / 4;
const u32 end_idx = (end_offset + 3) / 4;
const u32 start_idx = start_offset / 4;
// zero out bytes in the first u32 starting from 'start_offset'
block[start_idx - 1] &= 0xffffffff >> (((4 - start_offset) & 3) * 8);
block[start_idx] &= 0xffffffff << ((4 - (start_offset & 3)) * 8);
const u32 end_idx = (end_offset + 3) / 4;
// zero out bytes in u32 units -- note that the last u32 is completely zeroed!
for (u32 i = start_idx; i < end_idx; i++)
for (u32 i = start_idx + 1; i < end_idx; i++)
{
block[i] = 0;
}
@ -143,13 +170,14 @@ DECLSPEC int check_decoded_data (u32 *decoded_data, const u32 decoded_data_size)
const u32 sha1_u32_off = sha1_byte_off / 4;
u32 expected_sha1[5];
expected_sha1[0] = hc_bytealign_be_S (decoded_data[sha1_u32_off + 1], decoded_data[sha1_u32_off + 0], sha1_byte_off);
expected_sha1[1] = hc_bytealign_be_S (decoded_data[sha1_u32_off + 2], decoded_data[sha1_u32_off + 1], sha1_byte_off);
expected_sha1[2] = hc_bytealign_be_S (decoded_data[sha1_u32_off + 3], decoded_data[sha1_u32_off + 2], sha1_byte_off);
expected_sha1[3] = hc_bytealign_be_S (decoded_data[sha1_u32_off + 4], decoded_data[sha1_u32_off + 3], sha1_byte_off);
expected_sha1[4] = hc_bytealign_be_S (decoded_data[sha1_u32_off + 5], decoded_data[sha1_u32_off + 4], sha1_byte_off);
memzero_be_S (decoded_data, sha1_byte_off, 384 * sizeof(u32));
expected_sha1[0] = hc_bytealign_le_S (decoded_data[sha1_u32_off + 1], decoded_data[sha1_u32_off + 0], sha1_byte_off);
expected_sha1[1] = hc_bytealign_le_S (decoded_data[sha1_u32_off + 2], decoded_data[sha1_u32_off + 1], sha1_byte_off);
expected_sha1[2] = hc_bytealign_le_S (decoded_data[sha1_u32_off + 3], decoded_data[sha1_u32_off + 2], sha1_byte_off);
expected_sha1[3] = hc_bytealign_le_S (decoded_data[sha1_u32_off + 4], decoded_data[sha1_u32_off + 3], sha1_byte_off);
expected_sha1[4] = hc_bytealign_le_S (decoded_data[sha1_u32_off + 5], decoded_data[sha1_u32_off + 4], sha1_byte_off);
memzero_le_S (decoded_data, sha1_byte_off, 384 * sizeof(u32));
sha1_ctx_t ctx;
@ -188,14 +216,31 @@ KERNEL_FQ void m17010_init (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
// create a number of copies for efficiency
const u32 copies = 80 * sizeof(u32) / salted_pw_len;
for (u32 idx = 1; idx < copies; idx++)
{
memcat_be_S (salted_pw_block, idx * salted_pw_len, salted_pw_block, salted_pw_len);
memcat_le_S (salted_pw_block, idx * salted_pw_len, salted_pw_block, salted_pw_len);
}
for (u32 idx = 0; idx < 80; idx++) tmps[gid].salted_pw_block[idx] = salted_pw_block[idx];
for (u32 idx = 0; idx < 80; idx++)
{
tmps[gid].salted_pw_block[idx] = hc_swap32_S (salted_pw_block[idx]);
}
tmps[gid].salted_pw_block_len = (copies * salted_pw_len);
tmps[gid].h[0] = SHA1M_A;
tmps[gid].h[1] = SHA1M_B;
tmps[gid].h[2] = SHA1M_C;
tmps[gid].h[3] = SHA1M_D;
tmps[gid].h[4] = SHA1M_E;
tmps[gid].h[5] = SHA1M_A;
tmps[gid].h[6] = SHA1M_B;
tmps[gid].h[7] = SHA1M_C;
tmps[gid].h[8] = SHA1M_D;
tmps[gid].h[9] = SHA1M_E;
tmps[gid].len = 0;
}
KERNEL_FQ void m17010_loop_prepare (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
@ -204,31 +249,24 @@ KERNEL_FQ void m17010_loop_prepare (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
if (gid >= gid_max) return;
/**
* context save
*/
tmps[gid].w0[0] = 0;
tmps[gid].w0[1] = 0;
tmps[gid].w0[2] = 0;
tmps[gid].w0[3] = 0;
tmps[gid].w1[0] = 0;
tmps[gid].w1[1] = 0;
tmps[gid].w1[2] = 0;
tmps[gid].w1[3] = 0;
tmps[gid].w2[0] = 0;
tmps[gid].w2[1] = 0;
tmps[gid].w2[2] = 0;
tmps[gid].w2[3] = 0;
tmps[gid].w3[0] = 0;
tmps[gid].w3[1] = 0;
tmps[gid].w3[2] = 0;
tmps[gid].w3[3] = 0;
sha1_ctx_t ctx;
sha1_init (&ctx);
// padd with one or more zeroes for larger target key sizes, e.g. for AES-256
if (salt_repeat > 0)
{
u32 zeroes[16] = {0};
sha1_update (&ctx, zeroes, salt_repeat);
}
const u32 sha_offset = salt_repeat * 5;
for (int i = 0; i < 5; i++) tmps[gid].h[sha_offset + i] = ctx.h[i];
for (int i = 0; i < 4; i++) tmps[gid].w0[i] = ctx.w0[i];
for (int i = 0; i < 4; i++) tmps[gid].w1[i] = ctx.w1[i];
for (int i = 0; i < 4; i++) tmps[gid].w2[i] = ctx.w2[i];
for (int i = 0; i < 4; i++) tmps[gid].w3[i] = ctx.w3[i];
tmps[gid].len = ctx.len;
tmps[gid].len = salt_repeat;
}
KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
@ -236,12 +274,15 @@ KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
const u64 gid = get_global_id (0);
if (gid >= gid_max) return;
// get the prepared buffer from the gpg_tmp_t struct into a local buffer
u32 salted_pw_block[80];
for (int i = 0; i < 80; i++) salted_pw_block[i] = tmps[gid].salted_pw_block[i];
const u32 salted_pw_block_len = tmps[gid].salted_pw_block_len;
// do we really need this, since the salt is always length 8?
if (salted_pw_block_len == 0) return;
/**
@ -253,6 +294,7 @@ KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
const u32 sha_offset = salt_repeat * 5;
for (int i = 0; i < 5; i++) ctx.h[i] = tmps[gid].h[sha_offset + i];
for (int i = 0; i < 4; i++) ctx.w0[i] = tmps[gid].w0[i];
for (int i = 0; i < 4; i++) ctx.w1[i] = tmps[gid].w1[i];
for (int i = 0; i < 4; i++) ctx.w2[i] = tmps[gid].w2[i];
@ -268,7 +310,7 @@ KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
for (u32 i = 0; i < rounds; i++)
{
sha1_update_swap (&ctx, salted_pw_block, salted_pw_block_len);
sha1_update (&ctx, salted_pw_block, salted_pw_block_len);
}
if ((loop_pos + loop_cnt) == salt_iter)
@ -279,7 +321,7 @@ KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
{
memzero_be_S (salted_pw_block, remaining_bytes, salted_pw_block_len);
sha1_update_swap (&ctx, salted_pw_block, remaining_bytes);
sha1_update (&ctx, salted_pw_block, remaining_bytes);
}
sha1_final (&ctx);
@ -290,6 +332,7 @@ KERNEL_FQ void m17010_loop (KERN_ATTR_TMPS_ESALT (gpg_tmp_t, gpg_t))
*/
for (int i = 0; i < 5; i++) tmps[gid].h[sha_offset + i] = ctx.h[i];
for (int i = 0; i < 4; i++) tmps[gid].w0[i] = ctx.w0[i];
for (int i = 0; i < 4; i++) tmps[gid].w1[i] = ctx.w1[i];
for (int i = 0; i < 4; i++) tmps[gid].w2[i] = ctx.w2[i];

3
src/modules/module_17010.c
View File

@ -19,8 +19,7 @@ static const u32 DGST_SIZE = DGST_SIZE_4_4;
static const u32 HASH_CATEGORY = HASH_CATEGORY_RAW_HASH;
static const char *HASH_NAME = "GPG (AES-128/AES-256 (SHA-1($pass)))";
static const u64 KERN_TYPE = 17010;
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
| OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE;
static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE
| OPTS_TYPE_LOOP_PREPARE
| OPTS_TYPE_AUX1