openssl_symmetric_cipher.hpp

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#ifndef OPENSSL_SYMETRIC_CIPHER_HPP
#define OPENSSL_SYMETRIC_CIPHER_HPP
 
#include <logicalaccess/plugins/crypto/symmetric_cipher.hpp>
#include <openssl/evp.h>
 
namespace logicalaccess
{
namespace openssl
{
class OpenSSLSymmetricCipherContext;
 
class LLA_CRYPTO_API OpenSSLSymmetricCipher : public SymmetricCipher
{
  public:
    enum EncMode
    {
        ENC_MODE_CBC,  
        ENC_MODE_CFB,  
        ENC_MODE_CFB1, 
        ENC_MODE_CFB8, 
        ENC_MODE_ECB,  
        ENC_MODE_OFB   
    };
 
    enum Method
    {
        M_ENCRYPT,
        M_DECRYPT
    };
 
    explicit OpenSSLSymmetricCipher(EncMode mode);
 
    virtual ~OpenSSLSymmetricCipher();
 
    OpenSSLSymmetricCipherContext start(Method method, const SymmetricKey &key,
                                        const InitializationVector &iv,
                                        bool padding) const;
 
    static void update(OpenSSLSymmetricCipherContext &context, const ByteVector &src);
 
    static ByteVector stop(OpenSSLSymmetricCipherContext &context);
 
    void cipher(const ByteVector &src, ByteVector &dest, const SymmetricKey &key,
                const InitializationVector &iv, bool padding) override;
 
    void decipher(const ByteVector &src, ByteVector &dest, const SymmetricKey &key,
                  const InitializationVector &iv, bool padding) override;
 
  protected:
    virtual const EVP_CIPHER *getEVPCipher(const SymmetricKey &key) const = 0;
 
    EncMode mode() const
    {
        return d_mode;
    }
 
  private:
    EncMode d_mode;
};
}
}
 
#endif /* OPENSSL_SYMETRIC_CIPHER_HPP */