1 files changed, 78 insertions, 0 deletions
diff --git a/src/lib/crypto/cipher.cpp b/src/lib/crypto/cipher.cpp
new file mode 100644
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--- /dev/null
+++ b/src/lib/crypto/cipher.cpp
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+/*
+ * Copyright (c) 2021, [Ribose Inc](https://www.ribose.com).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ * 2.  Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "config.h"
+#include "symmetric.h"
+#include "cipher.hpp"
+
+#if defined(CRYPTO_BACKEND_OPENSSL)
+#include "cipher_ossl.hpp"
+#elif defined(CRYPTO_BACKEND_BOTAN)
+#include "cipher_botan.hpp"
+#endif
+
+std::unique_ptr<Cipher>
+Cipher::encryption(pgp_symm_alg_t    cipher,
+                   pgp_cipher_mode_t mode,
+                   size_t            tag_size,
+                   bool              disable_padding)
+{
+#if defined(CRYPTO_BACKEND_OPENSSL)
+    return Cipher_OpenSSL::encryption(cipher, mode, tag_size, disable_padding);
+#elif defined(CRYPTO_BACKEND_BOTAN)
+    return Cipher_Botan::encryption(cipher, mode, tag_size, disable_padding);
+#else
+#error "Crypto backend not specified"
+#endif
+}
+
+std::unique_ptr<Cipher>
+Cipher::decryption(pgp_symm_alg_t    cipher,
+                   pgp_cipher_mode_t mode,
+                   size_t            tag_size,
+                   bool              disable_padding)
+{
+#if defined(CRYPTO_BACKEND_OPENSSL)
+    return Cipher_OpenSSL::decryption(cipher, mode, tag_size, disable_padding);
+#elif defined(CRYPTO_BACKEND_BOTAN)
+    return Cipher_Botan::decryption(cipher, mode, tag_size, disable_padding);
+#else
+#error "Crypto backend not specified"
+#endif
+}
+
+Cipher::Cipher(pgp_symm_alg_t alg) : m_alg(alg)
+{
+}
+
+Cipher::~Cipher()
+{
+}
+
+size_t
+Cipher::block_size() const
+{
+    return pgp_block_size(m_alg);
+}