Erste Version der SchlÃsselerzeugung mittel EVP

1 files changed, 31 insertions, 0 deletions

diff --git a/crypt/hybridcrypt.cpp b/crypt/hybridcrypt.cpp
index 0802397..7376459 100644
--- a/crypt/hybridcrypt.cpp
+++ b/crypt/hybridcrypt.cpp
@@ -61,7 +61,38 @@ void HybridCrypt::decrypt(QString infileName, QString outfileName)
 
 void HybridCrypt::createKeypair()
 {
+    if (isCsprngSeeded())
+    {
+        // Lege Schlüsselkontextvariable an
+        EVP_PKEY_CTX *ctx = NULL;
+
+        // Erzeuge den Schlüsselkontext
+        if (!(ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, NULL)))
+        {
+            throwOpenSslException();
+        }
+
+        // Initialisiere den Schlüsselgenerator
+        if (EVP_PKEY_keygen_init(ctx) <= 0)
+        {
+            throwOpenSslException();
+        }
 
+        // Lege den Schlüssel mit 2048 Bit an
+        if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, 2048) <= 0)
+        {
+            throwOpenSslException();
+        }
+
+        // Erzeuge den Schlüssel
+        if (EVP_PKEY_keygen(ctx, &privateUserkey) <= 0)
+        {
+            throwOpenSslException();
+        }
+
+        // Räume den Schlüsselkontext ab
+        EVP_PKEY_CTX_free(ctx);
+    }
 }
 
 void HybridCrypt::importUserKeypair(QString keyfileName, QString password)