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235 lines
4.8 KiB
Common Lisp
235 lines
4.8 KiB
Common Lisp
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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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_common.cl"
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#include "inc_hash_sha1.cl"
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#include "inc_cipher_aes.cl"
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#endif
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typedef struct axcrypt_tmp
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{
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u32 KEK[4];
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u32 lsb[4];
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u32 cipher[4];
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} axcrypt_tmp_t;
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KERNEL_FQ void m13200_init (KERN_ATTR_TMPS (axcrypt_tmp_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_max) return;
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/**
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* KEK
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*/
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sha1_ctx_t ctx;
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sha1_init (&ctx);
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sha1_update_global_swap (&ctx, pws[gid].i, pws[gid].pw_len);
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sha1_final (&ctx);
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u32 KEK[5];
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KEK[0] = ctx.h[0];
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KEK[1] = ctx.h[1];
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KEK[2] = ctx.h[2];
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KEK[3] = ctx.h[3];
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KEK[4] = ctx.h[4];
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/* hash XOR salt is KEK, used as key for AES wrapping routine */
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tmps[gid].KEK[0] = KEK[0] ^ salt_bufs[salt_pos].salt_buf[0];
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tmps[gid].KEK[1] = KEK[1] ^ salt_bufs[salt_pos].salt_buf[1];
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tmps[gid].KEK[2] = KEK[2] ^ salt_bufs[salt_pos].salt_buf[2];
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tmps[gid].KEK[3] = KEK[3] ^ salt_bufs[salt_pos].salt_buf[3];
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/**
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* salt_buf[0..3] is salt
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* salt_buf[4..9] is wrapped_key
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*/
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/* set lsb */
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tmps[gid].lsb[0] = salt_bufs[salt_pos].salt_buf[6];
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tmps[gid].lsb[1] = salt_bufs[salt_pos].salt_buf[7];
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tmps[gid].lsb[2] = salt_bufs[salt_pos].salt_buf[8];
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tmps[gid].lsb[3] = salt_bufs[salt_pos].salt_buf[9];
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/* set msb */
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tmps[gid].cipher[0] = salt_bufs[salt_pos].salt_buf[4];
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tmps[gid].cipher[1] = salt_bufs[salt_pos].salt_buf[5];
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tmps[gid].cipher[2] = 0;
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tmps[gid].cipher[3] = 0;
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}
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KERNEL_FQ void m13200_loop (KERN_ATTR_TMPS (axcrypt_tmp_t))
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{
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const u64 gid = get_global_id (0);
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const u64 lid = get_local_id (0);
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const u64 lsz = get_local_size (0);
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/**
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* aes shared
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*/
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#ifdef REAL_SHM
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LOCAL_AS u32 s_td0[256];
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LOCAL_AS u32 s_td1[256];
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LOCAL_AS u32 s_td2[256];
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LOCAL_AS u32 s_td3[256];
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LOCAL_AS u32 s_td4[256];
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LOCAL_AS u32 s_te0[256];
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LOCAL_AS u32 s_te1[256];
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LOCAL_AS u32 s_te2[256];
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LOCAL_AS u32 s_te3[256];
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LOCAL_AS u32 s_te4[256];
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for (u32 i = lid; i < 256; i += lsz)
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{
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s_td0[i] = td0[i];
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s_td1[i] = td1[i];
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s_td2[i] = td2[i];
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s_td3[i] = td3[i];
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s_td4[i] = td4[i];
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s_te0[i] = te0[i];
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s_te1[i] = te1[i];
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s_te2[i] = te2[i];
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s_te3[i] = te3[i];
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s_te4[i] = te4[i];
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}
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barrier (CLK_LOCAL_MEM_FENCE);
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#else
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CONSTANT_AS u32a *s_td0 = td0;
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CONSTANT_AS u32a *s_td1 = td1;
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CONSTANT_AS u32a *s_td2 = td2;
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CONSTANT_AS u32a *s_td3 = td3;
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CONSTANT_AS u32a *s_td4 = td4;
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CONSTANT_AS u32a *s_te0 = te0;
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CONSTANT_AS u32a *s_te1 = te1;
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CONSTANT_AS u32a *s_te2 = te2;
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CONSTANT_AS u32a *s_te3 = te3;
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CONSTANT_AS u32a *s_te4 = te4;
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#endif
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if (gid >= gid_max) return;
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u32 ukey[4];
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ukey[0] = tmps[gid].KEK[0];
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ukey[1] = tmps[gid].KEK[1];
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ukey[2] = tmps[gid].KEK[2];
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ukey[3] = tmps[gid].KEK[3];
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u32 lsb[4];
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lsb[0] = tmps[gid].lsb[0];
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lsb[1] = tmps[gid].lsb[1];
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lsb[2] = tmps[gid].lsb[2];
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lsb[3] = tmps[gid].lsb[3];
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u32 cipher[4];
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cipher[0] = tmps[gid].cipher[0];
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cipher[1] = tmps[gid].cipher[1];
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cipher[2] = tmps[gid].cipher[2];
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cipher[3] = tmps[gid].cipher[3];
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/**
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* aes init
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*/
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#define KEYLEN 44
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u32 ks[KEYLEN];
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/**
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* aes decrypt key
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*/
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AES128_set_decrypt_key (ks, ukey, s_te0, s_te1, s_te2, s_te3, s_td0, s_td1, s_td2, s_td3);
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const u32 wrapping_rounds = salt_bufs[salt_pos].salt_iter - 1;
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/* custom AES un-wrapping loop */
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for (u32 i = 0, j = wrapping_rounds - loop_pos; i < loop_cnt; i++, j--)
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{
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const u32 j2 = j * 2;
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cipher[0] ^= hc_swap32_S (j2 + 2);
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/* R[i] */
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cipher[2] = lsb[2];
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cipher[3] = lsb[3];
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/* AES_ECB(KEK, (MSB XOR (NUMBER_AES_BLOCKS * j + i)) | R[i]) */
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AES128_decrypt (ks, cipher, cipher, s_td0, s_td1, s_td2, s_td3, s_td4);
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lsb[2] = cipher[2];
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lsb[3] = cipher[3];
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/* 2nd block treatment */
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cipher[0] ^= hc_swap32_S (j2 + 1);
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cipher[2] = lsb[0];
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cipher[3] = lsb[1];
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AES128_decrypt (ks, cipher, cipher, s_td0, s_td1, s_td2, s_td3, s_td4);
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lsb[0] = cipher[2];
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lsb[1] = cipher[3];
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}
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tmps[gid].lsb[0] = lsb[0];
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tmps[gid].lsb[1] = lsb[1];
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tmps[gid].lsb[2] = lsb[2];
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tmps[gid].lsb[3] = lsb[3];
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tmps[gid].cipher[0] = cipher[0];
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tmps[gid].cipher[1] = cipher[1];
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tmps[gid].cipher[2] = cipher[2];
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tmps[gid].cipher[3] = cipher[3];
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}
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KERNEL_FQ void m13200_comp (KERN_ATTR_TMPS (axcrypt_tmp_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_max) return;
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const u64 lid = get_local_id (0);
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#define il_pos 0
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if (tmps[gid].cipher[0] == 0xa6a6a6a6 && tmps[gid].cipher[1] == 0xa6a6a6a6)
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{
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if (atomic_inc (&hashes_shown[digests_offset]) == 0)
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{
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mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
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}
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}
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}
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