copying key when received

plugin/openssl/openssl_provider.cc

@@ -256,13 +256,13 @@ Status OpensslProvider::AddCipher(const std::string& /*descriptor*/,
     return Status::InvalidArgument("Multiple encryption keys not supported.");
   }
 
-  key_ = reinterpret_cast<const unsigned char *>(cipher);
-
   if (len == 16) {  aes_cipher_ = EVP_aes_128_ctr(); }
   else if (len == 24) { aes_cipher_ = EVP_aes_192_ctr(); }
   else if (len == 32) { aes_cipher_ = EVP_aes_256_ctr(); }
   else return Status::InvalidArgument("Invalid key size in provider.");
 
+  memcpy(key_,cipher,len);
+
   //if( 1 != EVP_CIPHER_up_ref(aes_cipher_)) return handleErrors("Failed to create provider.");
 
   return Status::OK();

plugin/openssl/openssl_provider.h

@@ -48,10 +48,11 @@ class OpensslProvider : public EncryptionProvider {
 
  private:
   const EVP_CIPHER *aes_cipher_;
-  const unsigned char *key_;
+  //const unsigned char *key_;
+  unsigned char key_[32];
   size_t key_len_;
   OpensslProvider()
-      : aes_cipher_(nullptr), key_(nullptr), key_len_(0) {}
+      : aes_cipher_(nullptr), key_len_(0) {}
   OpensslProvider(const OpensslProvider&) = delete;
   OpensslProvider& operator=(const OpensslProvider&) = delete;
   Status handleErrors (const char * str) const;