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

#include "common.h"
#include "types.h"
#include "modules.h"
#include "bitops.h"
#include "convert.h"
#include "shared.h"

static const u32   ATTACK_EXEC    = ATTACK_EXEC_OUTSIDE_KERNEL;
static const u32   DGST_POS0      = 0;
static const u32   DGST_POS1      = 1;
static const u32   DGST_POS2      = 2;
static const u32   DGST_POS3      = 3;
static const u32   DGST_SIZE      = DGST_SIZE_4_4;
static const u32   HASH_CATEGORY  = HASH_CATEGORY_PASSWORD_MANAGER;
static const char *HASH_NAME      = "KeePass 1 (AES/Twofish) and KeePass 2 (AES)";
static const u64   KERN_TYPE      = 13400;
static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE;
static const u64   OPTS_TYPE      = OPTS_TYPE_STOCK_MODULE
                                  | OPTS_TYPE_PT_GENERATE_LE;
static const u32   SALT_TYPE      = SALT_TYPE_EMBEDDED;
static const char *ST_PASS        = "hashcat";
static const char *ST_HASH        = "$keepass$*2*24569*0*c40432355cce7348c48053ceea0a28e7d18859c4ea47e3a799c6300861f64b95*265dafcc42e1537ff42e97e1e283c70014133be0fe2d420b4d24c6d57c9d2207*a00e20a852694c15aabb074d61b902fa*48dd553fb96f7996635f2414bfe6a1a8429ef0ffb71a1752abbef31853172c35*a44ae659958ad7fae8c8952cb83f3cf03fec2371ce22a8bf7fac1e687af2f249*1*64*5a26ea376cc5afc955104c334571d30486acbac512a94b75ca82a9e31dd97bf7";

u32         module_attack_exec    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC;     }
u32         module_dgst_pos0      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0;       }
u32         module_dgst_pos1      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1;       }
u32         module_dgst_pos2      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2;       }
u32         module_dgst_pos3      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3;       }
u32         module_dgst_size      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE;       }
u32         module_hash_category  (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY;   }
const char *module_hash_name      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME;       }
u64         module_kern_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE;       }
u32         module_opti_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE;       }
u64         module_opts_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE;       }
u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE;       }
const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }

typedef struct keepass
{
  u32 version;
  u32 algorithm;

  /* key-file handling */
  u32 keyfile_len;
  u32 keyfile[8];

  u32 final_random_seed[8];
  u32 transf_random_seed[8];
  u32 enc_iv[4];
  u32 contents_hash[8];

  /* specific to version 1 */
  u32 contents_len;
  u32 contents[0x200000];

  /* specific to version 2 */
  u32 expected_bytes[8];

} keepass_t;

typedef struct keepass_tmp
{
  u32 tmp_digest[8];

} keepass_tmp_t;

static const char *SIGNATURE_KEEPASS = "$keepass$";

u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  const u64 esalt_size = (const u64) sizeof (keepass_t);

  return esalt_size;
}

u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  const u64 tmp_size = (const u64) sizeof (keepass_tmp_t);

  return tmp_size;
}

u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  // this overrides the reductions of PW_MAX in case optimized kernel is selected
  // IOW, even in optimized kernel mode it support length 256

  const u32 pw_max = PW_MAX;

  return pw_max;
}

int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
{
  u32 *digest = (u32 *) digest_buf;

  keepass_t *keepass = (keepass_t *) esalt_buf;

  bool is_keyfile_present = false;

  if (line_len < 128) return (PARSER_SALT_LENGTH);

  if ((line_buf[line_len - (64 + 1 + 2 + 1 + 2)] == '*')
   && (line_buf[line_len - (64 + 1 + 2 + 1 + 1)] == '1')
   && (line_buf[line_len - (64 + 1 + 2 + 1 + 0)] == '*')) is_keyfile_present = true;

  hc_token_t token;

  memset (&token, 0, sizeof (hc_token_t));

  token.signatures_cnt    = 1;
  token.signatures_buf[0] = SIGNATURE_KEEPASS;

  token.sep[0]     = '*';
  token.len[0]     = 9;
  token.attr[0]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_SIGNATURE;

  token.sep[1]     = '*';
  token.len[1]     = 1;
  token.attr[1]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  token.sep[2]     = '*';
  token.len_min[2] = 1;
  token.len_max[2] = 10;
  token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  token.sep[3]     = '*';
  token.len_min[3] = 1;
  token.len_max[3] = 3;
  token.attr[3]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  const u8 version = line_buf[10];

  if (version == '1')
  {
    token.token_cnt  = 11;

    token.sep[4]     = '*';
    token.len[4]     = 32;
    token.attr[4]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[5]     = '*';
    token.len[5]     = 64;
    token.attr[5]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[6]     = '*';
    token.len[6]     = 32;
    token.attr[6]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[7]     = '*';
    token.len[7]     = 64;
    token.attr[7]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[8]     = '*';
    token.len[8]     = 1;
    token.attr[8]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_DIGIT;

    token.sep[9]     = '*';
    token.len_min[9] = 1;
    token.len_max[9] = 8;
    token.attr[9]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_DIGIT;

    token.sep[10]     = '*';
    token.len_min[10] = 2;
    token.len_max[10] = 0x1000000;
    token.attr[10]    = TOKEN_ATTR_VERIFY_LENGTH
                      | TOKEN_ATTR_VERIFY_HEX;

    if (is_keyfile_present == true)
    {
      token.token_cnt = 14;

      token.sep[11]     = '*';
      token.len[11]     = 1;
      token.attr[11]    = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_DIGIT;

      token.sep[12]     = '*';
      token.len[12]     = 2;
      token.attr[12]    = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_DIGIT;

      token.sep[13]     = '*';
      token.len[13]     = 64;
      token.attr[13]    = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_HEX;
    }
  }
  else if (version == '2')
  {
    token.token_cnt  = 9;

    token.sep[4]     = '*';
    token.len[4]     = 64;
    token.attr[4]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[5]     = '*';
    token.len[5]     = 64;
    token.attr[5]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[6]     = '*';
    token.len[6]     = 32;
    token.attr[6]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[7]     = '*';
    token.len[7]     = 64;
    token.attr[7]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    token.sep[8]     = '*';
    token.len[8]     = 64;
    token.attr[8]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;

    if (is_keyfile_present == true)
    {
      token.token_cnt = 12;

      token.sep[9]      = '*';
      token.len[9]      = 1;
      token.attr[9]     = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_DIGIT;

      token.sep[10]     = '*';
      token.len[10]     = 2;
      token.attr[10]    = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_DIGIT;

      token.sep[11]     = '*';
      token.len[11]     = 64;
      token.attr[11]    = TOKEN_ATTR_FIXED_LENGTH
                        | TOKEN_ATTR_VERIFY_HEX;
    }
  }
  else
  {
    return (PARSER_SALT_VALUE);
  }

  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);

  if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);

  // version

  const u8 *version_pos = token.buf[1];

  keepass->version = hc_strtoul ((const char *) version_pos, NULL, 10);

  // iter

  const u8 *rounds_pos = token.buf[2];

  salt->salt_iter = hc_strtoul ((const char *) rounds_pos, NULL, 10);

  // algo

  const u8 *algorithm_pos = token.buf[3];

  keepass->algorithm = hc_strtoul ((const char *) algorithm_pos, NULL, 10);

  // final_random_seed_pos

  const u8 *final_random_seed_pos = token.buf[4];

  keepass->final_random_seed[0] = hex_to_u32 (&final_random_seed_pos[ 0]);
  keepass->final_random_seed[1] = hex_to_u32 (&final_random_seed_pos[ 8]);
  keepass->final_random_seed[2] = hex_to_u32 (&final_random_seed_pos[16]);
  keepass->final_random_seed[3] = hex_to_u32 (&final_random_seed_pos[24]);

  keepass->final_random_seed[0] = byte_swap_32 (keepass->final_random_seed[0]);
  keepass->final_random_seed[1] = byte_swap_32 (keepass->final_random_seed[1]);
  keepass->final_random_seed[2] = byte_swap_32 (keepass->final_random_seed[2]);
  keepass->final_random_seed[3] = byte_swap_32 (keepass->final_random_seed[3]);

  if (keepass->version == 2)
  {
    keepass->final_random_seed[4] = hex_to_u32 (&final_random_seed_pos[32]);
    keepass->final_random_seed[5] = hex_to_u32 (&final_random_seed_pos[40]);
    keepass->final_random_seed[6] = hex_to_u32 (&final_random_seed_pos[48]);
    keepass->final_random_seed[7] = hex_to_u32 (&final_random_seed_pos[56]);

    keepass->final_random_seed[4] = byte_swap_32 (keepass->final_random_seed[4]);
    keepass->final_random_seed[5] = byte_swap_32 (keepass->final_random_seed[5]);
    keepass->final_random_seed[6] = byte_swap_32 (keepass->final_random_seed[6]);
    keepass->final_random_seed[7] = byte_swap_32 (keepass->final_random_seed[7]);
  }

  // transf_random_seed_pos

  const u8 *transf_random_seed_pos = token.buf[5];

  keepass->transf_random_seed[0] = hex_to_u32 (&transf_random_seed_pos[ 0]);
  keepass->transf_random_seed[1] = hex_to_u32 (&transf_random_seed_pos[ 8]);
  keepass->transf_random_seed[2] = hex_to_u32 (&transf_random_seed_pos[16]);
  keepass->transf_random_seed[3] = hex_to_u32 (&transf_random_seed_pos[24]);
  keepass->transf_random_seed[4] = hex_to_u32 (&transf_random_seed_pos[32]);
  keepass->transf_random_seed[5] = hex_to_u32 (&transf_random_seed_pos[40]);
  keepass->transf_random_seed[6] = hex_to_u32 (&transf_random_seed_pos[48]);
  keepass->transf_random_seed[7] = hex_to_u32 (&transf_random_seed_pos[56]);

  keepass->transf_random_seed[0] = byte_swap_32 (keepass->transf_random_seed[0]);
  keepass->transf_random_seed[1] = byte_swap_32 (keepass->transf_random_seed[1]);
  keepass->transf_random_seed[2] = byte_swap_32 (keepass->transf_random_seed[2]);
  keepass->transf_random_seed[3] = byte_swap_32 (keepass->transf_random_seed[3]);
  keepass->transf_random_seed[4] = byte_swap_32 (keepass->transf_random_seed[4]);
  keepass->transf_random_seed[5] = byte_swap_32 (keepass->transf_random_seed[5]);
  keepass->transf_random_seed[6] = byte_swap_32 (keepass->transf_random_seed[6]);
  keepass->transf_random_seed[7] = byte_swap_32 (keepass->transf_random_seed[7]);

  // enc_iv_pos

  const u8 *enc_iv_pos = token.buf[6];

  keepass->enc_iv[0] = hex_to_u32 (&enc_iv_pos[ 0]);
  keepass->enc_iv[1] = hex_to_u32 (&enc_iv_pos[ 8]);
  keepass->enc_iv[2] = hex_to_u32 (&enc_iv_pos[16]);
  keepass->enc_iv[3] = hex_to_u32 (&enc_iv_pos[24]);

  keepass->enc_iv[0] = byte_swap_32 (keepass->enc_iv[0]);
  keepass->enc_iv[1] = byte_swap_32 (keepass->enc_iv[1]);
  keepass->enc_iv[2] = byte_swap_32 (keepass->enc_iv[2]);
  keepass->enc_iv[3] = byte_swap_32 (keepass->enc_iv[3]);

  const u8 *keyfile_pos = NULL;

  if (keepass->version == 1)
  {
    // contents_hash

    const u8 *contents_hash_pos = token.buf[7];

    keepass->contents_hash[0] = hex_to_u32 (&contents_hash_pos[ 0]);
    keepass->contents_hash[1] = hex_to_u32 (&contents_hash_pos[ 8]);
    keepass->contents_hash[2] = hex_to_u32 (&contents_hash_pos[16]);
    keepass->contents_hash[3] = hex_to_u32 (&contents_hash_pos[24]);
    keepass->contents_hash[4] = hex_to_u32 (&contents_hash_pos[32]);
    keepass->contents_hash[5] = hex_to_u32 (&contents_hash_pos[40]);
    keepass->contents_hash[6] = hex_to_u32 (&contents_hash_pos[48]);
    keepass->contents_hash[7] = hex_to_u32 (&contents_hash_pos[56]);

    keepass->contents_hash[0] = byte_swap_32 (keepass->contents_hash[0]);
    keepass->contents_hash[1] = byte_swap_32 (keepass->contents_hash[1]);
    keepass->contents_hash[2] = byte_swap_32 (keepass->contents_hash[2]);
    keepass->contents_hash[3] = byte_swap_32 (keepass->contents_hash[3]);
    keepass->contents_hash[4] = byte_swap_32 (keepass->contents_hash[4]);
    keepass->contents_hash[5] = byte_swap_32 (keepass->contents_hash[5]);
    keepass->contents_hash[6] = byte_swap_32 (keepass->contents_hash[6]);
    keepass->contents_hash[7] = byte_swap_32 (keepass->contents_hash[7]);

    // contents

    const u8 *contents_pos = token.buf[10];
    const int contents_len = token.len[10];

    keepass->contents_len = contents_len / 2;

    for (int i = 0, j = 0; j < contents_len; i += 1, j += 8)
    {
      keepass->contents[i] = hex_to_u32 (&contents_pos[j]);

      keepass->contents[i] = byte_swap_32 (keepass->contents[i]);
    }

    if (is_keyfile_present == true)
    {
      keyfile_pos = token.buf[13];
    }
  }
  else if (keepass->version == 2)
  {
    // expected_bytes

    const u8 *expected_bytes_pos = token.buf[7];

    keepass->expected_bytes[0] = hex_to_u32 (&expected_bytes_pos[ 0]);
    keepass->expected_bytes[1] = hex_to_u32 (&expected_bytes_pos[ 8]);
    keepass->expected_bytes[2] = hex_to_u32 (&expected_bytes_pos[16]);
    keepass->expected_bytes[3] = hex_to_u32 (&expected_bytes_pos[24]);
    keepass->expected_bytes[4] = hex_to_u32 (&expected_bytes_pos[32]);
    keepass->expected_bytes[5] = hex_to_u32 (&expected_bytes_pos[40]);
    keepass->expected_bytes[6] = hex_to_u32 (&expected_bytes_pos[48]);
    keepass->expected_bytes[7] = hex_to_u32 (&expected_bytes_pos[56]);

    keepass->expected_bytes[0] = byte_swap_32 (keepass->expected_bytes[0]);
    keepass->expected_bytes[1] = byte_swap_32 (keepass->expected_bytes[1]);
    keepass->expected_bytes[2] = byte_swap_32 (keepass->expected_bytes[2]);
    keepass->expected_bytes[3] = byte_swap_32 (keepass->expected_bytes[3]);
    keepass->expected_bytes[4] = byte_swap_32 (keepass->expected_bytes[4]);
    keepass->expected_bytes[5] = byte_swap_32 (keepass->expected_bytes[5]);
    keepass->expected_bytes[6] = byte_swap_32 (keepass->expected_bytes[6]);
    keepass->expected_bytes[7] = byte_swap_32 (keepass->expected_bytes[7]);

    // contents_hash

    const u8 *contents_hash_pos = token.buf[8];

    keepass->contents_hash[0] = hex_to_u32 (&contents_hash_pos[ 0]);
    keepass->contents_hash[1] = hex_to_u32 (&contents_hash_pos[ 8]);
    keepass->contents_hash[2] = hex_to_u32 (&contents_hash_pos[16]);
    keepass->contents_hash[3] = hex_to_u32 (&contents_hash_pos[24]);
    keepass->contents_hash[4] = hex_to_u32 (&contents_hash_pos[32]);
    keepass->contents_hash[5] = hex_to_u32 (&contents_hash_pos[40]);
    keepass->contents_hash[6] = hex_to_u32 (&contents_hash_pos[48]);
    keepass->contents_hash[7] = hex_to_u32 (&contents_hash_pos[56]);

    keepass->contents_hash[0] = byte_swap_32 (keepass->contents_hash[0]);
    keepass->contents_hash[1] = byte_swap_32 (keepass->contents_hash[1]);
    keepass->contents_hash[2] = byte_swap_32 (keepass->contents_hash[2]);
    keepass->contents_hash[3] = byte_swap_32 (keepass->contents_hash[3]);
    keepass->contents_hash[4] = byte_swap_32 (keepass->contents_hash[4]);
    keepass->contents_hash[5] = byte_swap_32 (keepass->contents_hash[5]);
    keepass->contents_hash[6] = byte_swap_32 (keepass->contents_hash[6]);
    keepass->contents_hash[7] = byte_swap_32 (keepass->contents_hash[7]);

    if (is_keyfile_present == true)
    {
      keyfile_pos = token.buf[11];
    }
  }

  if (is_keyfile_present == true)
  {
    keepass->keyfile_len = 32;

    keepass->keyfile[0] = hex_to_u32 (&keyfile_pos[ 0]);
    keepass->keyfile[1] = hex_to_u32 (&keyfile_pos[ 8]);
    keepass->keyfile[2] = hex_to_u32 (&keyfile_pos[16]);
    keepass->keyfile[3] = hex_to_u32 (&keyfile_pos[24]);
    keepass->keyfile[4] = hex_to_u32 (&keyfile_pos[32]);
    keepass->keyfile[5] = hex_to_u32 (&keyfile_pos[40]);
    keepass->keyfile[6] = hex_to_u32 (&keyfile_pos[48]);
    keepass->keyfile[7] = hex_to_u32 (&keyfile_pos[56]);

    keepass->keyfile[0] = byte_swap_32 (keepass->keyfile[0]);
    keepass->keyfile[1] = byte_swap_32 (keepass->keyfile[1]);
    keepass->keyfile[2] = byte_swap_32 (keepass->keyfile[2]);
    keepass->keyfile[3] = byte_swap_32 (keepass->keyfile[3]);
    keepass->keyfile[4] = byte_swap_32 (keepass->keyfile[4]);
    keepass->keyfile[5] = byte_swap_32 (keepass->keyfile[5]);
    keepass->keyfile[6] = byte_swap_32 (keepass->keyfile[6]);
    keepass->keyfile[7] = byte_swap_32 (keepass->keyfile[7]);
  }

  if (keepass->version == 1)
  {
    digest[0] = keepass->contents_hash[0];
    digest[1] = keepass->contents_hash[1];
    digest[2] = keepass->contents_hash[2];
    digest[3] = keepass->contents_hash[3];
  }
  else
  {
    digest[0] = keepass->expected_bytes[0];
    digest[1] = keepass->expected_bytes[1];
    digest[2] = keepass->expected_bytes[2];
    digest[3] = keepass->expected_bytes[3];
  }

  salt->salt_buf[ 0] = keepass->transf_random_seed[0];
  salt->salt_buf[ 1] = keepass->transf_random_seed[1];
  salt->salt_buf[ 2] = keepass->transf_random_seed[2];
  salt->salt_buf[ 3] = keepass->transf_random_seed[3];
  salt->salt_buf[ 4] = keepass->transf_random_seed[4];
  salt->salt_buf[ 5] = keepass->transf_random_seed[5];
  salt->salt_buf[ 6] = keepass->transf_random_seed[6];
  salt->salt_buf[ 7] = keepass->transf_random_seed[7];
  salt->salt_buf[ 8] = keepass->keyfile[0];
  salt->salt_buf[ 9] = keepass->keyfile[1];
  salt->salt_buf[10] = keepass->keyfile[2];
  salt->salt_buf[11] = keepass->keyfile[3];
  salt->salt_buf[12] = keepass->keyfile[4];
  salt->salt_buf[13] = keepass->keyfile[5];
  salt->salt_buf[14] = keepass->keyfile[6];
  salt->salt_buf[15] = keepass->keyfile[7];

  salt->salt_len = 64;

  return (PARSER_OK);
}

int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
{
  const keepass_t *keepass = (const keepass_t *) esalt_buf;

  u32 version     = keepass->version;
  u32 rounds      = salt->salt_iter;
  u32 algorithm   = keepass->algorithm;
  u32 keyfile_len = keepass->keyfile_len;

  const u32 *ptr_final_random_seed  = (const u32 *) keepass->final_random_seed;
  const u32 *ptr_transf_random_seed = (const u32 *) keepass->transf_random_seed;
  const u32 *ptr_enc_iv             = (const u32 *) keepass->enc_iv;
  const u32 *ptr_contents_hash      = (const u32 *) keepass->contents_hash;
  const u32 *ptr_keyfile            = (const u32 *) keepass->keyfile;

  // specific to version 2
  u32 expected_bytes_len;
  const u32 *ptr_expected_bytes;

  u32 final_random_seed_len;
  u32 transf_random_seed_len;
  u32 enc_iv_len;
  u32 contents_hash_len;

  transf_random_seed_len = 8;
  enc_iv_len             = 4;
  contents_hash_len      = 8;
  final_random_seed_len  = 8;

  if (version == 1)
    final_random_seed_len = 4;

  snprintf (line_buf, line_size, "%s*%u*%u*%u",
    SIGNATURE_KEEPASS,
    version,
    rounds,
    algorithm);

  char *ptr_data = line_buf;

  ptr_data += strlen (line_buf);

  *ptr_data = '*';
  ptr_data++;

  for (u32 i = 0; i < final_random_seed_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_final_random_seed[i]);

  *ptr_data = '*';
  ptr_data++;

  for (u32 i = 0; i < transf_random_seed_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_transf_random_seed[i]);

  *ptr_data = '*';
  ptr_data++;

  for (u32 i = 0; i < enc_iv_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_enc_iv[i]);

  *ptr_data = '*';
  ptr_data++;

  if (version == 1)
  {
    u32  contents_len =         keepass->contents_len;
    const u32 *ptr_contents = (const u32 *) keepass->contents;

    for (u32 i = 0; i < contents_hash_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_contents_hash[i]);

    *ptr_data = '*';
    ptr_data++;

    // inline flag
    *ptr_data = '1';
    ptr_data++;

    *ptr_data = '*';
    ptr_data++;

    char ptr_contents_len[10] = { 0 };

    snprintf ((char*) ptr_contents_len, sizeof (ptr_contents_len), "%u", contents_len);

    snprintf (ptr_data, sizeof (ptr_contents_len), "%u", contents_len);

    ptr_data += strlen (ptr_contents_len);

    *ptr_data = '*';
    ptr_data++;

    for (u32 i = 0; i < contents_len / 4; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_contents[i]);
  }
  else if (version == 2)
  {
    expected_bytes_len = 8;
    ptr_expected_bytes = (const u32 *) keepass->expected_bytes;

    for (u32 i = 0; i < expected_bytes_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_expected_bytes[i]);

    *ptr_data = '*';
    ptr_data++;

    for (u32 i = 0; i < contents_hash_len; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_contents_hash[i]);
  }

  if (keyfile_len)
  {
    *ptr_data = '*';
    ptr_data++;

    // inline flag
    *ptr_data = '1';
    ptr_data++;

    *ptr_data = '*';
    ptr_data++;

    snprintf (ptr_data, 3, "%u", keyfile_len * 2);

    ptr_data += 2;

    *ptr_data = '*';
    ptr_data++;

    for (u32 i = 0; i < 8; i++, ptr_data += 8) snprintf (ptr_data, 9, "%08x", ptr_keyfile[i]);
  }

  return strlen (line_buf);
}

void module_init (module_ctx_t *module_ctx)
{
  module_ctx->module_context_size             = MODULE_CONTEXT_SIZE_CURRENT;
  module_ctx->module_interface_version        = MODULE_INTERFACE_VERSION_CURRENT;

  module_ctx->module_attack_exec              = module_attack_exec;
  module_ctx->module_benchmark_esalt          = MODULE_DEFAULT;
  module_ctx->module_benchmark_hook_salt      = MODULE_DEFAULT;
  module_ctx->module_benchmark_mask           = MODULE_DEFAULT;
  module_ctx->module_benchmark_charset        = MODULE_DEFAULT;
  module_ctx->module_benchmark_salt           = MODULE_DEFAULT;
  module_ctx->module_bridge_name              = MODULE_DEFAULT;
  module_ctx->module_bridge_type              = MODULE_DEFAULT;
  module_ctx->module_build_plain_postprocess  = MODULE_DEFAULT;
  module_ctx->module_deep_comp_kernel         = MODULE_DEFAULT;
  module_ctx->module_deprecated_notice        = MODULE_DEFAULT;
  module_ctx->module_dgst_pos0                = module_dgst_pos0;
  module_ctx->module_dgst_pos1                = module_dgst_pos1;
  module_ctx->module_dgst_pos2                = module_dgst_pos2;
  module_ctx->module_dgst_pos3                = module_dgst_pos3;
  module_ctx->module_dgst_size                = module_dgst_size;
  module_ctx->module_dictstat_disable         = MODULE_DEFAULT;
  module_ctx->module_esalt_size               = module_esalt_size;
  module_ctx->module_extra_buffer_size        = MODULE_DEFAULT;
  module_ctx->module_extra_tmp_size           = MODULE_DEFAULT;
  module_ctx->module_extra_tuningdb_block     = MODULE_DEFAULT;
  module_ctx->module_forced_outfile_format    = MODULE_DEFAULT;
  module_ctx->module_hash_binary_count        = MODULE_DEFAULT;
  module_ctx->module_hash_binary_parse        = MODULE_DEFAULT;
  module_ctx->module_hash_binary_save         = MODULE_DEFAULT;
  module_ctx->module_hash_decode_postprocess  = MODULE_DEFAULT;
  module_ctx->module_hash_decode_potfile      = MODULE_DEFAULT;
  module_ctx->module_hash_decode_zero_hash    = MODULE_DEFAULT;
  module_ctx->module_hash_decode              = module_hash_decode;
  module_ctx->module_hash_encode_status       = MODULE_DEFAULT;
  module_ctx->module_hash_encode_potfile      = MODULE_DEFAULT;
  module_ctx->module_hash_encode              = module_hash_encode;
  module_ctx->module_hash_init_selftest       = MODULE_DEFAULT;
  module_ctx->module_hash_mode                = MODULE_DEFAULT;
  module_ctx->module_hash_category            = module_hash_category;
  module_ctx->module_hash_name                = module_hash_name;
  module_ctx->module_hashes_count_min         = MODULE_DEFAULT;
  module_ctx->module_hashes_count_max         = MODULE_DEFAULT;
  module_ctx->module_hlfmt_disable            = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_size    = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_init    = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_term    = MODULE_DEFAULT;
  module_ctx->module_hook12                   = MODULE_DEFAULT;
  module_ctx->module_hook23                   = MODULE_DEFAULT;
  module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
  module_ctx->module_hook_size                = MODULE_DEFAULT;
  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
  module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
  module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
  module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
  module_ctx->module_kernel_loops_max         = MODULE_DEFAULT;
  module_ctx->module_kernel_loops_min         = MODULE_DEFAULT;
  module_ctx->module_kernel_threads_max       = MODULE_DEFAULT;
  module_ctx->module_kernel_threads_min       = MODULE_DEFAULT;
  module_ctx->module_kern_type                = module_kern_type;
  module_ctx->module_kern_type_dynamic        = MODULE_DEFAULT;
  module_ctx->module_opti_type                = module_opti_type;
  module_ctx->module_opts_type                = module_opts_type;
  module_ctx->module_outfile_check_disable    = MODULE_DEFAULT;
  module_ctx->module_outfile_check_nocomp     = MODULE_DEFAULT;
  module_ctx->module_potfile_custom_check     = MODULE_DEFAULT;
  module_ctx->module_potfile_disable          = MODULE_DEFAULT;
  module_ctx->module_potfile_keep_all_hashes  = MODULE_DEFAULT;
  module_ctx->module_pwdump_column            = MODULE_DEFAULT;
  module_ctx->module_pw_max                   = module_pw_max;
  module_ctx->module_pw_min                   = MODULE_DEFAULT;
  module_ctx->module_salt_max                 = MODULE_DEFAULT;
  module_ctx->module_salt_min                 = MODULE_DEFAULT;
  module_ctx->module_salt_type                = module_salt_type;
  module_ctx->module_separator                = MODULE_DEFAULT;
  module_ctx->module_st_hash                  = module_st_hash;
  module_ctx->module_st_pass                  = module_st_pass;
  module_ctx->module_tmp_size                 = module_tmp_size;
  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
  module_ctx->module_warmup_disable           = MODULE_DEFAULT;
}
