Initial commit: PrivateBin API C++ DLL implementation

include/crypto.h

@@ -0,0 +1,76 @@
+#ifndef CRYPTO_H
+#define CRYPTO_H
+
+#include <string>
+#include <vector>
+
+class Crypto {
+public:
+    /**
+     * Generates a random key of specified length
+     * 
+     * @param length The length of the key to generate
+     * @return The generated key
+     */
+    static std::vector<unsigned char> generate_key(size_t length);
+
+    /**
+     * Encrypts data using AES-GCM
+     * 
+     * @param plaintext The data to encrypt
+     * @param key The encryption key
+     * @param iv The initialization vector
+     * @param auth_tag Output parameter for the authentication tag
+     * @return The encrypted data
+     */
+    static std::vector<unsigned char> encrypt(const std::vector<unsigned char>& plaintext,
+                                             const std::vector<unsigned char>& key,
+                                             const std::vector<unsigned char>& iv,
+                                             std::vector<unsigned char>& auth_tag);
+
+    /**
+     * Decrypts data using AES-GCM
+     * 
+     * @param ciphertext The data to decrypt
+     * @param key The decryption key
+     * @param iv The initialization vector
+     * @param auth_tag The authentication tag
+     * @return The decrypted data
+     */
+    static std::vector<unsigned char> decrypt(const std::vector<unsigned char>& ciphertext,
+                                             const std::vector<unsigned char>& key,
+                                             const std::vector<unsigned char>& iv,
+                                             const std::vector<unsigned char>& auth_tag);
+
+    /**
+     * Derives a key using PBKDF2-HMAC-SHA256
+     * 
+     * @param password The password to derive from
+     * @param salt The salt to use
+     * @param iterations The number of iterations
+     * @param key_length The length of the derived key
+     * @return The derived key
+     */
+    static std::vector<unsigned char> pbkdf2_hmac_sha256(const std::string& password,
+                                                        const std::vector<unsigned char>& salt,
+                                                        int iterations,
+                                                        size_t key_length);
+
+    /**
+     * Compresses data using zlib
+     * 
+     * @param data The data to compress
+     * @return The compressed data
+     */
+    static std::vector<unsigned char> compress(const std::vector<unsigned char>& data);
+
+    /**
+     * Decompresses data using zlib
+     * 
+     * @param data The data to decompress
+     * @return The decompressed data
+     */
+    static std::vector<unsigned char> decompress(const std::vector<unsigned char>& data);
+};
+
+#endif // CRYPTO_H