1 files changed, 0 insertions, 80 deletions
diff --git a/works/life/information-security-experiment/des.cpp b/works/life/information-security-experiment/des.cpp
deleted file mode 100644
index 93a6ea3..0000000
--- a/works/life/information-security-experiment/des.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-#include <openssl/des.h>
-#include <openssl/evp.h>
-
-#include <cstdlib>
-#include <iomanip>
-#include <iostream>
-
-void PrintCblock(const DES_cblock &b, bool end_line = true) {
-  std::cout << std::hex << std::right << std::setfill('0');
-
-  for (auto c : b) {
-    std::cout << std::setw(2) << static_cast<int>(c);
-  }
-
-  if (end_line) {
-    std::cout << std::endl;
-  }
-}
-
-int main() {
-  auto cipher = EVP_des_cfb();
-
-  std::cout << "Selected cipher: des_cfb" << std::endl;
-
-  auto key_length = EVP_CIPHER_key_length(cipher);
-  std::cout << "Key length: " << key_length << std::endl;
-
-  auto iv_length = EVP_CIPHER_iv_length(cipher);
-  std::cout << "IV length: " << iv_length << std::endl;
-
-  auto block_length = EVP_CIPHER_block_size(cipher);
-  std::cout << "Block length: " << block_length << std::endl;
-
-  DES_cblock key;
-
-  std::srand(std::time(nullptr));
-
-  std::cout << std::hex << std::setfill('0');
-
-  if (DES_random_key(&key) == 0) {
-    std::cerr << "Failed to generate key." << std::endl;
-    return 1;
-  } else {
-    std::cout << "Succeeded to generate key." << std::endl;
-    std::cout << "Key: ";
-    PrintCblock(key);
-  }
-
-  DES_key_schedule key_schedule;
-
-  {
-    auto result = DES_set_key_checked(&key, &key_schedule);
-
-    if (result == -1) {
-      std::cerr << "Parity is wrong." << std::endl;
-      return 1;
-    } else if (result == -2) {
-      std::cerr << "Key is too weak." << std::endl;
-    }
-  }
-
-  DES_cblock clear_text = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
-
-  std::cout << "Clear text: " << std::hex;
-  PrintCblock(clear_text);
-
-  DES_cblock cipher_text;
-
-  DES_ecb_encrypt(&clear_text, &cipher_text, &key_schedule, 1);
-
-  std::cout << "Cipher text after encrypted: " << std::hex;
-  PrintCblock(cipher_text);
-
-  DES_ecb_encrypt(&cipher_text, &clear_text, &key_schedule, 0);
-
-  std::cout << "Clear text after decrypted: " << std::hex;
-  PrintCblock(clear_text);
-
-  return 0;
-}