1 files changed, 0 insertions, 65 deletions
diff --git a/works/life/information-security-experiment/rsa.cpp b/works/life/information-security-experiment/rsa.cpp
deleted file mode 100644
index 5b88284..0000000
--- a/works/life/information-security-experiment/rsa.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-#include <openssl/evp.h>
-#include <openssl/rsa.h>
-
-#include <iomanip>
-#include <iostream>
-#include <vector>
-
-int main() {
-
-  auto ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, nullptr);
-  EVP_PKEY *pkey = NULL;
-  EVP_PKEY_keygen_init(ctx);
-  EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, 2048);
-  EVP_PKEY_keygen(ctx, &pkey);
-  EVP_PKEY_CTX_free(ctx);
-  ctx = nullptr;
-
-  unsigned char cleartext[] = "abc";
-  int cleartext_size = sizeof(cleartext) / sizeof(cleartext[0]);
-
-  EVP_MD_CTX *md_ctx = EVP_MD_CTX_create();
-  EVP_DigestInit_ex(md_ctx, EVP_sha256(), NULL);
-  EVP_DigestUpdate(md_ctx, cleartext, cleartext_size);
-  unsigned char digest[EVP_MAX_MD_SIZE];
-  unsigned int digest_size;
-  EVP_DigestFinal_ex(md_ctx, digest, &digest_size);
-  EVP_MD_CTX_destroy(md_ctx);
-  md_ctx = nullptr;
-  std::cout << "SHA256 digest of 'abc' is: " << std::hex << std::setfill('0');
-  for (unsigned int i = 0; i < digest_size; i++) {
-    std::cout << std::setw(2) << (int)digest[i];
-  }
-  std::cout << std::endl;
-
-  std::vector<unsigned char> sig;
-  size_t sig_len;
-
-  ctx = EVP_PKEY_CTX_new(pkey, nullptr);
-  EVP_PKEY_sign_init(ctx);
-  EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_PADDING);
-  EVP_PKEY_sign(ctx, nullptr, &sig_len, digest, digest_size);
-  sig.resize(sig_len);
-  EVP_PKEY_sign(ctx, sig.data(), &sig_len, digest, digest_size);
-  EVP_PKEY_CTX_free(ctx);
-
-  std::cout << "Signature: " << std::hex << std::setfill('0');
-  for (auto c : sig) {
-    std::cout << std::setw(2) << static_cast<int>(c);
-  }
-  std::cout << std::endl;
-
-  ctx = EVP_PKEY_CTX_new(pkey, nullptr);
-  EVP_PKEY_verify_init(ctx);
-  EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_PADDING);
-  auto result = EVP_PKEY_verify(ctx, sig.data(), sig_len, digest, digest_size);
-  if (result == 1) {
-    std::cout << "Verification succeeded." << std::endl;
-  } else if (result == 0) {
-    std::cout << "Verification failed." << std::endl;
-  } else {
-    std::cerr << "Verification error." << std::endl;
-  }
-
-  return 0;
-}
-\ No newline at end of file