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/*
* OctetString
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SYMKEY_H_
#define BOTAN_SYMKEY_H_
#include <botan/secmem.h>
#include <string>
namespace Botan {
/**
* Octet String
*/
class BOTAN_PUBLIC_API(2,0) OctetString final
{
public:
/**
* @return size of this octet string in bytes
*/
size_t length() const { return m_data.size(); }
size_t size() const { return m_data.size(); }
/**
* @return this object as a secure_vector<uint8_t>
*/
secure_vector<uint8_t> bits_of() const { return m_data; }
/**
* @return start of this string
*/
const uint8_t* begin() const { return m_data.data(); }
/**
* @return end of this string
*/
const uint8_t* end() const { return begin() + m_data.size(); }
/**
* @return this encoded as hex
*/
std::string as_string() const;
/**
* XOR the contents of another octet string into this one
* @param other octet string
* @return reference to this
*/
OctetString& operator^=(const OctetString& other);
/**
* Force to have odd parity
*/
void set_odd_parity();
/**
* Create a new OctetString
* @param str is a hex encoded string
*/
explicit OctetString(const std::string& str = "");
/**
* Create a new random OctetString
* @param rng is a random number generator
* @param len is the desired length in bytes
*/
OctetString(class RandomNumberGenerator& rng, size_t len);
/**
* Create a new OctetString
* @param in is an array
* @param len is the length of in in bytes
*/
OctetString(const uint8_t in[], size_t len);
/**
* Create a new OctetString
* @param in a bytestring
*/
OctetString(const secure_vector<uint8_t>& in) : m_data(in) {}
/**
* Create a new OctetString
* @param in a bytestring
*/
OctetString(const std::vector<uint8_t>& in) : m_data(in.begin(), in.end()) {}
private:
secure_vector<uint8_t> m_data;
};
/**
* Compare two strings
* @param x an octet string
* @param y an octet string
* @return if x is equal to y
*/
BOTAN_PUBLIC_API(2,0) bool operator==(const OctetString& x,
const OctetString& y);
/**
* Compare two strings
* @param x an octet string
* @param y an octet string
* @return if x is not equal to y
*/
BOTAN_PUBLIC_API(2,0) bool operator!=(const OctetString& x,
const OctetString& y);
/**
* Concatenate two strings
* @param x an octet string
* @param y an octet string
* @return x concatenated with y
*/
BOTAN_PUBLIC_API(2,0) OctetString operator+(const OctetString& x,
const OctetString& y);
/**
* XOR two strings
* @param x an octet string
* @param y an octet string
* @return x XORed with y
*/
BOTAN_PUBLIC_API(2,0) OctetString operator^(const OctetString& x,
const OctetString& y);
/**
* Alternate name for octet string showing intent to use as a key
*/
using SymmetricKey = OctetString;
/**
* Alternate name for octet string showing intent to use as an IV
*/
using InitializationVector = OctetString;
}
#endif
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