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/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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//#define NEW_SIMD_CODE
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#ifdef KERNEL_STATIC
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#include "inc_vendor.h"
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#include "inc_types.h"
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#include "inc_platform.cl"
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#include "inc_common.cl"
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#include "inc_simd.cl"
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#include "inc_hash_md5.cl"
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#endif
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#define COMPARE_S "inc_comp_single.cl"
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#define COMPARE_M "inc_comp_multi.cl"
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#define SNMPV3_SALT_MAX 1500
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#define SNMPV3_ENGINEID_MAX 34
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#define SNMPV3_MSG_AUTH_PARAMS_LEN 12
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#define SNMPV3_ROUNDS 1048576
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#define SNMPV3_MAX_PW_LENGTH 64
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#define SNMPV3_TMP_ELEMS 4096 // 4096 = (256 (max pw length) * 64) / sizeof (u32)
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#define SNMPV3_HASH_ELEMS 4
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#define SNMPV3_MAX_SALT_ELEMS 512 // 512 * 4 = 2048 > 1500, also has to be multiple of 64
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#define SNMPV3_MAX_ENGINE_ELEMS 16 // 16 * 4 = 64 > 32, also has to be multiple of 64
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#define SNMPV3_MAX_PNUM_ELEMS 4 // 4 * 4 = 16 > 9
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#define SNMPV3_MAX_PW_LENGTH_OPT 64
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#define SNMPV3_TMP_ELEMS_OPT ((SNMPV3_MAX_PW_LENGTH_OPT * SNMPV3_MAX_PW_LENGTH) / 4)
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// (64 * 64) / 4 = 1024
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// for pw length > 64 we use global memory reads
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typedef struct hmac_md5_tmp
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{
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u32 tmp[SNMPV3_TMP_ELEMS];
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u32 h[SNMPV3_HASH_ELEMS];
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} hmac_md5_tmp_t;
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typedef struct snmpv3
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{
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u32 salt_buf[SNMPV3_MAX_SALT_ELEMS];
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u32 salt_len;
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u32 engineID_buf[SNMPV3_MAX_ENGINE_ELEMS];
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u32 engineID_len;
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u32 packet_number[SNMPV3_MAX_PNUM_ELEMS];
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} snmpv3_t;
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KERNEL_FQ void m25100_init (KERN_ATTR_TMPS_ESALT (hmac_md5_tmp_t, snmpv3_t))
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{
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/**
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* modifier
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*/
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const u64 gid = get_global_id (0);
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if (gid >= GID_CNT) return;
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/**
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* base
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*/
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const u32 pw_len = pws[gid].pw_len;
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u32 w[64] = { 0 };
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for (u32 i = 0, idx = 0; i < pw_len; i += 4, idx += 1)
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{
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w[idx] = pws[gid].i[idx];
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}
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u8 *src_ptr = (u8 *) w;
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// password 64 times, also swapped
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u32 dst_buf[16];
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u8 *dst_ptr = (u8 *) dst_buf;
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int tmp_idx = 0;
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for (int i = 0; i < 64; i++)
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{
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for (int j = 0; j < pw_len; j++)
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{
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const int dst_idx = tmp_idx & 63;
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dst_ptr[dst_idx] = src_ptr[j];
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// write to global memory every time 64 byte are written into cache
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if (dst_idx == 63)
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{
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const int tmp_idx4 = (tmp_idx - 63) / 4;
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tmps[gid].tmp[tmp_idx4 + 0] = dst_buf[ 0];
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tmps[gid].tmp[tmp_idx4 + 1] = dst_buf[ 1];
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tmps[gid].tmp[tmp_idx4 + 2] = dst_buf[ 2];
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tmps[gid].tmp[tmp_idx4 + 3] = dst_buf[ 3];
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tmps[gid].tmp[tmp_idx4 + 4] = dst_buf[ 4];
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tmps[gid].tmp[tmp_idx4 + 5] = dst_buf[ 5];
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tmps[gid].tmp[tmp_idx4 + 6] = dst_buf[ 6];
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tmps[gid].tmp[tmp_idx4 + 7] = dst_buf[ 7];
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tmps[gid].tmp[tmp_idx4 + 8] = dst_buf[ 8];
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tmps[gid].tmp[tmp_idx4 + 9] = dst_buf[ 9];
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tmps[gid].tmp[tmp_idx4 + 10] = dst_buf[10];
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tmps[gid].tmp[tmp_idx4 + 11] = dst_buf[11];
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tmps[gid].tmp[tmp_idx4 + 12] = dst_buf[12];
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tmps[gid].tmp[tmp_idx4 + 13] = dst_buf[13];
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tmps[gid].tmp[tmp_idx4 + 14] = dst_buf[14];
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tmps[gid].tmp[tmp_idx4 + 15] = dst_buf[15];
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}
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tmp_idx++;
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}
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}
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// hash
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tmps[gid].h[0] = MD5M_A;
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tmps[gid].h[1] = MD5M_B;
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tmps[gid].h[2] = MD5M_C;
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tmps[gid].h[3] = MD5M_D;
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}
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KERNEL_FQ void m25100_loop (KERN_ATTR_TMPS_ESALT (hmac_md5_tmp_t, snmpv3_t))
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{
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/**
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* base
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*/
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const u64 gid = get_global_id (0);
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if (gid >= GID_CNT) return;
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u32 h[4];
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h[0] = tmps[gid].h[0];
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h[1] = tmps[gid].h[1];
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h[2] = tmps[gid].h[2];
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h[3] = tmps[gid].h[3];
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const u32 pw_len = pws[gid].pw_len;
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const int pw_len64 = pw_len * 64;
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if (pw_len <= SNMPV3_MAX_PW_LENGTH_OPT)
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{
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u32 tmp[SNMPV3_TMP_ELEMS_OPT];
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for (int i = 0; i < pw_len64 / 4; i++)
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{
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tmp[i] = tmps[gid].tmp[i];
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}
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for (int i = 0, j = LOOP_POS; i < LOOP_CNT; i += 64, j += 64)
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{
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const int idx = (j % pw_len64) / 4; // the optimization trick is to be able to do this
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u32 w0[4];
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u32 w1[4];
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u32 w2[4];
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u32 w3[4];
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w0[0] = tmp[idx + 0];
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w0[1] = tmp[idx + 1];
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w0[2] = tmp[idx + 2];
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w0[3] = tmp[idx + 3];
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w1[0] = tmp[idx + 4];
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w1[1] = tmp[idx + 5];
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w1[2] = tmp[idx + 6];
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w1[3] = tmp[idx + 7];
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w2[0] = tmp[idx + 8];
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w2[1] = tmp[idx + 9];
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w2[2] = tmp[idx + 10];
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w2[3] = tmp[idx + 11];
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w3[0] = tmp[idx + 12];
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w3[1] = tmp[idx + 13];
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w3[2] = tmp[idx + 14];
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w3[3] = tmp[idx + 15];
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md5_transform (w0, w1, w2, w3, h);
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}
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}
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else
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{
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for (int i = 0, j = LOOP_POS; i < LOOP_CNT; i += 64, j += 64)
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{
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const int idx = (j % pw_len64) / 4; // the optimization trick is to be able to do this
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u32 w0[4];
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u32 w1[4];
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u32 w2[4];
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u32 w3[4];
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w0[0] = tmps[gid].tmp[idx + 0];
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w0[1] = tmps[gid].tmp[idx + 1];
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w0[2] = tmps[gid].tmp[idx + 2];
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w0[3] = tmps[gid].tmp[idx + 3];
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w1[0] = tmps[gid].tmp[idx + 4];
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w1[1] = tmps[gid].tmp[idx + 5];
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w1[2] = tmps[gid].tmp[idx + 6];
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w1[3] = tmps[gid].tmp[idx + 7];
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w2[0] = tmps[gid].tmp[idx + 8];
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w2[1] = tmps[gid].tmp[idx + 9];
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w2[2] = tmps[gid].tmp[idx + 10];
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w2[3] = tmps[gid].tmp[idx + 11];
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w3[0] = tmps[gid].tmp[idx + 12];
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w3[1] = tmps[gid].tmp[idx + 13];
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w3[2] = tmps[gid].tmp[idx + 14];
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w3[3] = tmps[gid].tmp[idx + 15];
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md5_transform (w0, w1, w2, w3, h);
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}
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}
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tmps[gid].h[0] = h[0];
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tmps[gid].h[1] = h[1];
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tmps[gid].h[2] = h[2];
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tmps[gid].h[3] = h[3];
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}
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KERNEL_FQ void m25100_comp (KERN_ATTR_TMPS_ESALT (hmac_md5_tmp_t, snmpv3_t))
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{
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/**
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* modifier
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*/
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const u64 gid = get_global_id (0);
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if (gid >= GID_CNT) return;
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u32 w0[4];
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u32 w1[4];
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u32 w2[4];
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u32 w3[4];
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w0[0] = 0x00000080;
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w0[1] = 0;
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w0[2] = 0;
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w0[3] = 0;
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w1[0] = 0;
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w1[1] = 0;
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w1[2] = 0;
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w1[3] = 0;
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w2[0] = 0;
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w2[1] = 0;
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w2[2] = 0;
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w2[3] = 0;
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w3[0] = 0;
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w3[1] = 0;
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w3[2] = 1048576 * 8;
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w3[3] = 0;
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u32 h[4];
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h[0] = tmps[gid].h[0];
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h[1] = tmps[gid].h[1];
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h[2] = tmps[gid].h[2];
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h[3] = tmps[gid].h[3];
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md5_transform (w0, w1, w2, w3, h);
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md5_ctx_t ctx;
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md5_init (&ctx);
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u32 w[16];
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w[ 0] = h[0];
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w[ 1] = h[1];
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w[ 2] = h[2];
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w[ 3] = h[3];
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w[ 4] = 0;
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w[ 5] = 0;
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w[ 6] = 0;
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w[ 7] = 0;
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w[ 8] = 0;
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w[ 9] = 0;
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w[10] = 0;
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w[11] = 0;
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w[12] = 0;
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w[13] = 0;
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w[14] = 0;
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w[15] = 0;
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md5_update (&ctx, w, 16);
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md5_update_global (&ctx, esalt_bufs[DIGESTS_OFFSET_HOST].engineID_buf, esalt_bufs[DIGESTS_OFFSET_HOST].engineID_len);
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w[ 0] = h[0];
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w[ 1] = h[1];
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w[ 2] = h[2];
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w[ 3] = h[3];
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w[ 4] = 0;
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w[ 5] = 0;
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w[ 6] = 0;
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w[ 7] = 0;
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w[ 8] = 0;
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w[ 9] = 0;
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w[10] = 0;
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w[11] = 0;
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w[12] = 0;
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w[13] = 0;
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w[14] = 0;
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w[15] = 0;
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md5_update (&ctx, w, 16);
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md5_final (&ctx);
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w[ 0] = ctx.h[0];
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w[ 1] = ctx.h[1];
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w[ 2] = ctx.h[2];
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w[ 3] = ctx.h[3];
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w[ 4] = 0;
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w[ 5] = 0;
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w[ 6] = 0;
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w[ 7] = 0;
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w[ 8] = 0;
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w[ 9] = 0;
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w[10] = 0;
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w[11] = 0;
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w[12] = 0;
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w[13] = 0;
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w[14] = 0;
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w[15] = 0;
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md5_hmac_ctx_t hmac_ctx;
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md5_hmac_init (&hmac_ctx, w, 16);
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md5_hmac_update_global (&hmac_ctx, esalt_bufs[DIGESTS_OFFSET_HOST].salt_buf, esalt_bufs[DIGESTS_OFFSET_HOST].salt_len);
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md5_hmac_final (&hmac_ctx);
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const u32 r0 = hmac_ctx.opad.h[DGST_R0];
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const u32 r1 = hmac_ctx.opad.h[DGST_R1];
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const u32 r2 = hmac_ctx.opad.h[DGST_R2];
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const u32 r3 = 0;
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#define il_pos 0
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#ifdef KERNEL_STATIC
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#include COMPARE_M
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#endif
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}
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