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class encrypt_stream
{
public:
encrypt_stream();
virtual ~encrypt_stream();
static encrypt_stream * select_cipher(std::string type);
virtual int get_ivec_size() = 0;
virtual int get_key_size() = 0;
virtual bool init(unsigned char *key, int key_len, unsigned char *ivec, bool force=false) = 0;
virtual std::string get_name() = 0;
virtual void encrypt(unsigned char *p_in, int len, unsigned char *p_out) = 0;
virtual void decrypt(unsigned char *p_in, int len, unsigned char *p_out) = 0;
};
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