Moved source files to seperate folder

sunshine/crypto.h

@@ -0,0 +1,64 @@
+//
+// Created by loki on 6/1/19.
+//
+
+#ifndef SUNSHINE_CRYPTO_H
+#define SUNSHINE_CRYPTO_H
+
+#include <cassert>
+#include <array>
+#include <openssl/evp.h>
+#include <openssl/sha.h>
+#include <openssl/x509.h>
+#include <openssl/rand.h>
+
+#include "utility.h"
+
+namespace crypto {
+constexpr std::size_t digest_size = 256;
+
+void md_ctx_destroy(EVP_MD_CTX *);
+
+using sha256_t = std::array<std::uint8_t, SHA256_DIGEST_LENGTH>;
+
+using aes_t = std::array<std::uint8_t, 16>;
+using x509_t = util::safe_ptr<X509, X509_free>;
+using cipher_ctx_t = util::safe_ptr<EVP_CIPHER_CTX, EVP_CIPHER_CTX_free>;
+using md_ctx_t = util::safe_ptr<EVP_MD_CTX, md_ctx_destroy>;
+using bio_t = util::safe_ptr<BIO, BIO_free_all>;
+using pkey_t = util::safe_ptr<EVP_PKEY, EVP_PKEY_free>;
+
+sha256_t hash(const std::string_view &plaintext);
+aes_t gen_aes_key(const std::array<uint8_t, 16> &salt, const std::string_view &pin);
+
+x509_t x509(const std::string_view &x);
+pkey_t pkey(const std::string_view &k);
+
+std::vector<uint8_t> sign256(const pkey_t &pkey, const std::string_view &data);
+bool verify256(const x509_t &x509, const std::string_view &data, const std::string_view &signature);
+
+
+std::string_view signature(const x509_t &x);
+
+std::string rand(std::size_t bytes);
+
+class cipher_t {
+public:
+  cipher_t(const aes_t &key);
+  cipher_t(cipher_t&&) noexcept = default;
+  cipher_t &operator=(cipher_t&&) noexcept = default;
+
+  int encrypt(const std::string_view &plaintext, std::vector<std::uint8_t> &cipher);
+
+  int decrypt_gcm(aes_t &iv, const std::string_view &cipher, std::vector<std::uint8_t> &plaintext);
+  int decrypt(const std::string_view &cipher, std::vector<std::uint8_t> &plaintext);
+private:
+  cipher_ctx_t ctx;
+  aes_t key;
+
+public:
+  bool padding;
+};
+}
+
+#endif //SUNSHINE_CRYPTO_H