/**
 * Author......: See docs/credits.txt
 * License.....: MIT
 */

//too much register pressure
//#define NEW_SIMD_CODE

#ifdef KERNEL_STATIC
#include M2S(INCLUDE_PATH/inc_vendor.h)
#include M2S(INCLUDE_PATH/inc_types.h)
#include M2S(INCLUDE_PATH/inc_platform.cl)
#include M2S(INCLUDE_PATH/inc_common.cl)
#include M2S(INCLUDE_PATH/inc_simd.cl)
#include M2S(INCLUDE_PATH/inc_hash_sha1.cl)
#include M2S(INCLUDE_PATH/inc_cipher_rc4.cl)
#endif

typedef struct oldoffice34
{
  u32 version;
  u32 encryptedVerifier[4];
  u32 encryptedVerifierHash[5];
  u32 secondBlockData[8];
  u32 secondBlockLen;
  u32 rc4key[2];

} oldoffice34_t;

KERNEL_FQ KERNEL_FA void m09810_m04 (KERN_ATTR_ESALT (oldoffice34_t))
{
  /**
   * modifier
   */

  const u64 lid = get_local_id (0);

  /**
   * base
   */

  const u64 gid = get_global_id (0);

  if (gid >= GID_CNT) return;

  u32 pw_buf0[4];
  u32 pw_buf1[4];

  pw_buf0[0] = pws[gid].i[0];
  pw_buf0[1] = pws[gid].i[1];
  pw_buf0[2] = pws[gid].i[2];
  pw_buf0[3] = pws[gid].i[3];
  pw_buf1[0] = pws[gid].i[4];
  pw_buf1[1] = pws[gid].i[5];
  pw_buf1[2] = pws[gid].i[6];
  pw_buf1[3] = pws[gid].i[7];

  const u32 pw_l_len = pws[gid].pw_len & 63;

  /**
   * shared
   */

  LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE];

  /**
   * esalt
   */

  u32 encryptedVerifier[4];

  encryptedVerifier[0] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[0];
  encryptedVerifier[1] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[1];
  encryptedVerifier[2] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[2];
  encryptedVerifier[3] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[3];

  /**
   * loop
   */

  for (u32 il_pos = 0; il_pos < IL_CNT; il_pos += VECT_SIZE)
  {
    const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos) & 63;

    const u32x pw_len = (pw_l_len + pw_r_len) & 63;

    /**
     * concat password candidate
     */

    u32x wordl0[4] = { 0 };
    u32x wordl1[4] = { 0 };
    u32x wordl2[4] = { 0 };
    u32x wordl3[4] = { 0 };

    wordl0[0] = pw_buf0[0];
    wordl0[1] = pw_buf0[1];
    wordl0[2] = pw_buf0[2];
    wordl0[3] = pw_buf0[3];
    wordl1[0] = pw_buf1[0];
    wordl1[1] = pw_buf1[1];
    wordl1[2] = pw_buf1[2];
    wordl1[3] = pw_buf1[3];

    u32x wordr0[4] = { 0 };
    u32x wordr1[4] = { 0 };
    u32x wordr2[4] = { 0 };
    u32x wordr3[4] = { 0 };

    wordr0[0] = ix_create_combt (combs_buf, il_pos, 0);
    wordr0[1] = ix_create_combt (combs_buf, il_pos, 1);
    wordr0[2] = ix_create_combt (combs_buf, il_pos, 2);
    wordr0[3] = ix_create_combt (combs_buf, il_pos, 3);
    wordr1[0] = ix_create_combt (combs_buf, il_pos, 4);
    wordr1[1] = ix_create_combt (combs_buf, il_pos, 5);
    wordr1[2] = ix_create_combt (combs_buf, il_pos, 6);
    wordr1[3] = ix_create_combt (combs_buf, il_pos, 7);

    if (COMBS_MODE == COMBINATOR_MODE_BASE_LEFT)
    {
      switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len);
    }
    else
    {
      switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len);
    }

    u32x w0[4];
    u32x w1[4];
    u32x w2[4];
    u32x w3[4];

    w0[0] = wordl0[0] | wordr0[0];
    w0[1] = wordl0[1] | wordr0[1];

    /**
     * RC4 + SHA1
     */

    u32 key[4];

    key[0] = w0[0];
    key[1] = w0[1] & 0xff;
    key[2] = 0;
    key[3] = 0;

    rc4_init_128 (S, key, lid);

    u32 out[4];

    u8 j = rc4_next_16 (S, 0, 0, encryptedVerifier, out, lid);

    w0[0] = hc_swap32 (out[0]);
    w0[1] = hc_swap32 (out[1]);
    w0[2] = hc_swap32 (out[2]);
    w0[3] = hc_swap32 (out[3]);
    w1[0] = 0x80000000;
    w1[1] = 0;
    w1[2] = 0;
    w1[3] = 0;
    w2[0] = 0;
    w2[1] = 0;
    w2[2] = 0;
    w2[3] = 0;
    w3[0] = 0;
    w3[1] = 0;
    w3[2] = 0;
    w3[3] = 16 * 8;

    u32 digest[5];

    digest[0] = SHA1M_A;
    digest[1] = SHA1M_B;
    digest[2] = SHA1M_C;
    digest[3] = SHA1M_D;
    digest[4] = SHA1M_E;

    sha1_transform (w0, w1, w2, w3, digest);

    digest[0] = hc_swap32_S (digest[0]);
    digest[1] = hc_swap32_S (digest[1]);
    digest[2] = hc_swap32_S (digest[2]);
    digest[3] = hc_swap32_S (digest[3]);

    rc4_next_16 (S, 16, j, digest, out, lid);

    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
  }
}

KERNEL_FQ KERNEL_FA void m09810_m08 (KERN_ATTR_ESALT (oldoffice34_t))
{
}

KERNEL_FQ KERNEL_FA void m09810_m16 (KERN_ATTR_ESALT (oldoffice34_t))
{
}

KERNEL_FQ KERNEL_FA void m09810_s04 (KERN_ATTR_ESALT (oldoffice34_t))
{
  /**
   * modifier
   */

  const u64 lid = get_local_id (0);

  /**
   * base
   */

  const u64 gid = get_global_id (0);

  if (gid >= GID_CNT) return;

  u32 pw_buf0[4];
  u32 pw_buf1[4];

  pw_buf0[0] = pws[gid].i[0];
  pw_buf0[1] = pws[gid].i[1];
  pw_buf0[2] = pws[gid].i[2];
  pw_buf0[3] = pws[gid].i[3];
  pw_buf1[0] = pws[gid].i[4];
  pw_buf1[1] = pws[gid].i[5];
  pw_buf1[2] = pws[gid].i[6];
  pw_buf1[3] = pws[gid].i[7];

  const u32 pw_l_len = pws[gid].pw_len & 63;

  /**
   * shared
   */

  LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE];

  /**
   * esalt
   */

  u32 encryptedVerifier[4];

  encryptedVerifier[0] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[0];
  encryptedVerifier[1] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[1];
  encryptedVerifier[2] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[2];
  encryptedVerifier[3] = esalt_bufs[DIGESTS_OFFSET_HOST].encryptedVerifier[3];

  /**
   * digest
   */

  const u32 search[4] =
  {
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R0],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R1],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R2],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R3]
  };

  /**
   * loop
   */

  for (u32 il_pos = 0; il_pos < IL_CNT; il_pos += VECT_SIZE)
  {
    const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos) & 63;

    const u32x pw_len = (pw_l_len + pw_r_len) & 63;

    /**
     * concat password candidate
     */

    u32x wordl0[4] = { 0 };
    u32x wordl1[4] = { 0 };
    u32x wordl2[4] = { 0 };
    u32x wordl3[4] = { 0 };

    wordl0[0] = pw_buf0[0];
    wordl0[1] = pw_buf0[1];
    wordl0[2] = pw_buf0[2];
    wordl0[3] = pw_buf0[3];
    wordl1[0] = pw_buf1[0];
    wordl1[1] = pw_buf1[1];
    wordl1[2] = pw_buf1[2];
    wordl1[3] = pw_buf1[3];

    u32x wordr0[4] = { 0 };
    u32x wordr1[4] = { 0 };
    u32x wordr2[4] = { 0 };
    u32x wordr3[4] = { 0 };

    wordr0[0] = ix_create_combt (combs_buf, il_pos, 0);
    wordr0[1] = ix_create_combt (combs_buf, il_pos, 1);
    wordr0[2] = ix_create_combt (combs_buf, il_pos, 2);
    wordr0[3] = ix_create_combt (combs_buf, il_pos, 3);
    wordr1[0] = ix_create_combt (combs_buf, il_pos, 4);
    wordr1[1] = ix_create_combt (combs_buf, il_pos, 5);
    wordr1[2] = ix_create_combt (combs_buf, il_pos, 6);
    wordr1[3] = ix_create_combt (combs_buf, il_pos, 7);

    if (COMBS_MODE == COMBINATOR_MODE_BASE_LEFT)
    {
      switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len);
    }
    else
    {
      switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len);
    }

    u32x w0[4];
    u32x w1[4];
    u32x w2[4];
    u32x w3[4];

    w0[0] = wordl0[0] | wordr0[0];
    w0[1] = wordl0[1] | wordr0[1];

    /**
     * RC4 + SHA1
     */

    u32 key[4];

    key[0] = w0[0];
    key[1] = w0[1] & 0xff;
    key[2] = 0;
    key[3] = 0;

    rc4_init_128 (S, key, lid);

    u32 out[4];

    u8 j = rc4_next_16 (S, 0, 0, encryptedVerifier, out, lid);

    w0[0] = hc_swap32 (out[0]);
    w0[1] = hc_swap32 (out[1]);
    w0[2] = hc_swap32 (out[2]);
    w0[3] = hc_swap32 (out[3]);
    w1[0] = 0x80000000;
    w1[1] = 0;
    w1[2] = 0;
    w1[3] = 0;
    w2[0] = 0;
    w2[1] = 0;
    w2[2] = 0;
    w2[3] = 0;
    w3[0] = 0;
    w3[1] = 0;
    w3[2] = 0;
    w3[3] = 16 * 8;

    u32 digest[5];

    digest[0] = SHA1M_A;
    digest[1] = SHA1M_B;
    digest[2] = SHA1M_C;
    digest[3] = SHA1M_D;
    digest[4] = SHA1M_E;

    sha1_transform (w0, w1, w2, w3, digest);

    digest[0] = hc_swap32_S (digest[0]);
    digest[1] = hc_swap32_S (digest[1]);
    digest[2] = hc_swap32_S (digest[2]);
    digest[3] = hc_swap32_S (digest[3]);

    rc4_next_16 (S, 16, j, digest, out, lid);

    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
  }
}

KERNEL_FQ KERNEL_FA void m09810_s08 (KERN_ATTR_ESALT (oldoffice34_t))
{
}

KERNEL_FQ KERNEL_FA void m09810_s16 (KERN_ATTR_ESALT (oldoffice34_t))
{
}
