text: /**
   * 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"
  #include "memory.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      = "Stargazer Stellar Wallet XLM, PBKDF2-HMAC-SHA256 + AES-256-GCM";
  static const u64   KERN_TYPE      = 27000;
  static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE
                                    | OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
  static const u64   OPTS_TYPE      = OPTS_TYPE_PT_GENERATE_LE
                                    | OPTS_TYPE_ST_BASE64
                                    | OPTS_TYPE_HASH_COPY;
  static const u32   SALT_TYPE      = SALT_TYPE_EMBEDDED;
  static const char *ST_PASS        = "lacoin";
  static const char *ST_HASH        = "$stellar$ZCtl/+vWiLL358Jz+xnP5A==$GgmFU37DSX4evSMU$CoMGXWHqDmLwxRAgORqjK/MyFEMAkMbqvDEDMjn4veVwpHab9m6Egcwp70qEJsRhjkHjCMWj9zX40tu9UK5QACuB8gD1r9Cu";
  
  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 pbkdf2_sha256_tmp
  {
    u32  ipad[8];
    u32  opad[8];
  
    u32  dgst[32];
    u32  out[32];
  
  } pbkdf2_sha256_tmp_t;
  
  typedef struct pbkdf2_sha256_aes_gcm
  {
    u32 salt_buf[64];
    u32 iv_buf[4];
    u32 iv_len;
    u32 ct_buf[14];
    u32 ct_len;
  
  } pbkdf2_sha256_aes_gcm_t;
  
  static const char *SIGNATURE_STARGAZER_STELLAR_WALLET_XLM = "$stellar$";
  
  char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
  {
    char *jit_build_options = NULL;
  
    // Extra treatment for Apple systems
    if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
    {
      return jit_build_options;
    }
  
    // NVIDIA GPU
    if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
    {
      // aes expandkey produce wrong results with this kernel if REAL_SHM is enabled
      hc_asprintf (&jit_build_options, "-D _unroll -D FORCE_DISABLE_SHM");
    }
  
    // ROCM
    if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
    {
      hc_asprintf (&jit_build_options, "-D _unroll");
    }
  
    return jit_build_options;
  }
  
  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 (pbkdf2_sha256_aes_gcm_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 (pbkdf2_sha256_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;
  
    pbkdf2_sha256_aes_gcm_t *stellar = (pbkdf2_sha256_aes_gcm_t *) esalt_buf;
  
    token_t token;
  
    token.token_cnt  = 4;
  
    token.signatures_cnt    = 1;
    token.signatures_buf[0] = SIGNATURE_STARGAZER_STELLAR_WALLET_XLM;
  
    token.len[0]     = 9;
    token.attr[0]    = TOKEN_ATTR_FIXED_LENGTH
                     | TOKEN_ATTR_VERIFY_SIGNATURE;
  
    token.sep[1]     = '$';
    token.len_min[1] = 24;
    token.len_max[1] = 24;
    token.attr[1]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_BASE64A;
  
    token.sep[2]     = '$';
    token.len_min[2] = 16;
    token.len_max[2] = 16;
    token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_BASE64A;
  
    token.sep[3]     = '$';
    token.len_min[3] = 96;
    token.len_max[3] = 96;
    token.attr[3]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_BASE64A;
  
    const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
  
    if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
  
    u8 tmp_buf[512];
  
    size_t tmp_len = 0;
  
    // iter
  
    salt->salt_iter = 4096 - 1;
  
    // salt
  
    const u8 *salt_pos = token.buf[1];
    const int salt_len = token.len[1];
  
    memset (tmp_buf, 0, sizeof (tmp_buf));
  
    tmp_len = base64_decode (base64_to_int, salt_pos, salt_len, tmp_buf);
  
    if (tmp_len != 16) return (PARSER_SALT_LENGTH);
  
    memcpy (salt->salt_buf, tmp_buf, tmp_len);
  
    salt->salt_len = tmp_len;
  
    stellar->salt_buf[0] = salt->salt_buf[0];
    stellar->salt_buf[1] = salt->salt_buf[1];
    stellar->salt_buf[2] = salt->salt_buf[2];
    stellar->salt_buf[3] = salt->salt_buf[3];
  
    // iv
  
    const u8 *iv_pos = token.buf[2];
    const int iv_len = token.len[2];
  
    memset (tmp_buf, 0, sizeof (tmp_buf));
  
    tmp_len = base64_decode (base64_to_int, iv_pos, iv_len, tmp_buf);
  
    if (tmp_len != 12) return (PARSER_IV_LENGTH);
  
    memcpy ((u8 *)stellar->iv_buf, tmp_buf, tmp_len);
  
    stellar->iv_buf[0] = byte_swap_32 (stellar->iv_buf[0]);
    stellar->iv_buf[1] = byte_swap_32 (stellar->iv_buf[1]);
    stellar->iv_buf[2] = byte_swap_32 (stellar->iv_buf[2]);
    stellar->iv_buf[3] = 0x000001;
  
    stellar->iv_len = tmp_len;
  
    // ciphertext
  
    const u8 *ct_pos = token.buf[3];
    const int ct_len = token.len[3];
  
    memset (tmp_buf, 0, sizeof (tmp_buf));
  
    tmp_len = base64_decode (base64_to_int, ct_pos, ct_len, tmp_buf);
  
    if (tmp_len != 72) return (PARSER_CT_LENGTH);
  
    memcpy ((u8 *)stellar->ct_buf, tmp_buf, tmp_len - 16);
  
    for (u32 i = 0; i < 14; i++)
    {
      stellar->ct_buf[i] = byte_swap_32 (stellar->ct_buf[i]);
    }
  
    stellar->ct_len = tmp_len - 16;
  
    // tag
  
    u32 tag_buf[4];
  
    memset (tag_buf, 0, sizeof (tag_buf));
  
    memcpy ((u8 *)tag_buf, tmp_buf+stellar->ct_len, 16);
  
    digest[0] = byte_swap_32 (tag_buf[0]);
    digest[1] = byte_swap_32 (tag_buf[1]);
    digest[2] = byte_swap_32 (tag_buf[2]);
    digest[3] = byte_swap_32 (tag_buf[3]);
  
    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 u32 *digest = (const u32 *) digest_buf;
  
    pbkdf2_sha256_aes_gcm_t *stellar = (pbkdf2_sha256_aes_gcm_t *) esalt_buf;
  
    // salt
  
    #define SALT_LEN_BASE64 ((16 * 8) / 6) + 3
    #define IV_LEN_BASE64   ((12 * 8) / 6) + 3
    #define CT_LEN_BASE64   ((72 * 8) / 6) + 3
  
    u8 salt_buf[SALT_LEN_BASE64] = { 0 };
  
    base64_encode (int_to_base64, (const u8 *) salt->salt_buf, (const int) salt->salt_len, salt_buf);
  
    // iv
  
    u32 tmp_iv_buf[3] = { 0 };
  
    tmp_iv_buf[0] = byte_swap_32 (stellar->iv_buf[0]);
    tmp_iv_buf[1] = byte_swap_32 (stellar->iv_buf[1]);
    tmp_iv_buf[2] = byte_swap_32 (stellar->iv_buf[2]);
  
    u8 iv_buf[IV_LEN_BASE64] = { 0 };
  
    base64_encode (int_to_base64, (const u8 *) tmp_iv_buf, (const int) stellar->iv_len, iv_buf);
  
    // ct
  
    u32 tmp_buf[18] = { 0 };
  
    for (int i = 0; i < 14; i++) tmp_buf[i] = byte_swap_32 (stellar->ct_buf[i]);
  
    tmp_buf[14] = byte_swap_32 (digest[0]);
    tmp_buf[15] = byte_swap_32 (digest[1]);
    tmp_buf[16] = byte_swap_32 (digest[2]);
    tmp_buf[17] = byte_swap_32 (digest[3]);
  
    u8 ct_buf[CT_LEN_BASE64] = { 0 };
  
    base64_encode (int_to_base64, (const u8 *) tmp_buf, (const int) stellar->ct_len+16, ct_buf);
  
    u8 *out_buf = (u8 *) line_buf;
  
    int out_len = snprintf ((char *) out_buf, line_size, "%s%s$%s$%s",
      SIGNATURE_STARGAZER_STELLAR_WALLET_XLM,
      salt_buf,
      iv_buf,
      ct_buf);
  
    return out_len;
  }
  
  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_salt           = MODULE_DEFAULT;
    module_ctx->module_build_plain_postprocess  = MODULE_DEFAULT;
    module_ctx->module_deep_comp_kernel         = 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_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_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_jit_build_options;
    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;
  }
  