1 files changed, 64 insertions, 0 deletions
diff --git a/src/fdosecrets/GcryptMPI.h b/src/fdosecrets/GcryptMPI.h
new file mode 100644
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+++ b/src/fdosecrets/GcryptMPI.h
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (C) 2019 Aetf <aetf@unlimitedcodeworks.xyz>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef KEEPASSXC_GCRYPTMPI_H
+#define KEEPASSXC_GCRYPTMPI_H
+
+#include <QByteArray>
+
+#include <gcrypt.h>
+
+#include <memory>
+#include <type_traits>
+
+template <typename D, D fn> using deleter_from_fn = std::integral_constant<D, fn>;
+
+/**
+ * A simple RAII wrapper for gcry_mpi_t
+ */
+using GcryptMPI = std::unique_ptr<gcry_mpi, deleter_from_fn<decltype(&gcry_mpi_release), &gcry_mpi_release>>;
+
+/**
+ * A simple RAII wrapper for libgcrypt allocated memory
+ */
+using GcryptMemPtr = std::unique_ptr<char, deleter_from_fn<decltype(&gcry_free), &gcry_free>>;
+
+/**
+ * Parse a QByteArray as MPI
+ * @param bytes
+ * @param secure
+ * @param format
+ * @return
+ */
+GcryptMPI MpiFromBytes(const QByteArray& bytes, bool secure = true, gcry_mpi_format format = GCRYMPI_FMT_USG);
+
+/**
+ * Parse MPI from hex data
+ * @param hex
+ * @param secure
+ * @return
+ */
+GcryptMPI MpiFromHex(const char* hex, bool secure = true);
+
+/**
+ * Dump MPI to bytes in USG format
+ * @param mpi
+ * @return
+ */
+QByteArray MpiToBytes(const GcryptMPI& mpi);
+
+#endif // KEEPASSXC_GCRYPTMPI_H