Botan  2.4.0
Crypto and TLS for C++11
Public Member Functions | List of all members
Botan::OctetString Class Referencefinal

#include <symkey.h>

Public Member Functions

std::string as_string () const
const uint8_t * begin () const
secure_vector< uint8_t > bits_of () const
const uint8_t * end () const
size_t length () const
 OctetString (const std::string &str="")
 OctetString (class RandomNumberGenerator &rng, size_t len)
 OctetString (const uint8_t in[], size_t len)
 OctetString (const secure_vector< uint8_t > &in)
 OctetString (const std::vector< uint8_t > &in)
OctetStringoperator^= (const OctetString &other)
void set_odd_parity ()
size_t size () const

Detailed Description

Octet String

Definition at line 19 of file symkey.h.

Constructor & Destructor Documentation

◆ OctetString() [1/5]

Botan::OctetString::OctetString ( const std::string &  str = "")

Create a new OctetString

stris a hex encoded string

Definition at line 27 of file symkey.cpp.

References Botan::hex_decode().

Referenced by Botan::operator+(), and Botan::operator^().

28  {
29  m_data.resize(1 + hex_string.length() / 2);
30  m_data.resize(hex_decode(, hex_string));
31  }
size_t hex_decode(uint8_t output[], const char input[], size_t input_length, size_t &input_consumed, bool ignore_ws)
Definition: hex.cpp:49

◆ OctetString() [2/5]

Botan::OctetString::OctetString ( class RandomNumberGenerator rng,
size_t  len 

Create a new random OctetString

rngis a random number generator
lenis the desired length in bytes

Definition at line 18 of file symkey.cpp.

References Botan::RandomNumberGenerator::random_vec().

20  {
21  m_data = rng.random_vec(len);
22  }

◆ OctetString() [3/5]

Botan::OctetString::OctetString ( const uint8_t  in[],
size_t  len 

Create a new OctetString

inis an array
lenis the length of in in bytes

Definition at line 36 of file symkey.cpp.

37  {
38  m_data.assign(in, in + n);
39  }

◆ OctetString() [4/5]

Botan::OctetString::OctetString ( const secure_vector< uint8_t > &  in)

Create a new OctetString

ina bytestring

Definition at line 84 of file symkey.h.

84 : m_data(in) {}

◆ OctetString() [5/5]

Botan::OctetString::OctetString ( const std::vector< uint8_t > &  in)

Create a new OctetString

ina bytestring

Definition at line 90 of file symkey.h.

References BOTAN_PUBLIC_API, Botan::operator!=(), Botan::operator+(), Botan::operator==(), and Botan::operator^().

90 : m_data(in.begin(), in.end()) {}

Member Function Documentation

◆ as_string()

std::string Botan::OctetString::as_string ( ) const
this encoded as hex

Definition at line 77 of file symkey.cpp.

References Botan::hex_encode().

78  {
79  return hex_encode(, m_data.size());
80  }
void hex_encode(char output[], const uint8_t input[], size_t input_length, bool uppercase)
Definition: hex.cpp:14

◆ begin()

const uint8_t* Botan::OctetString::begin ( ) const

◆ bits_of()

secure_vector<uint8_t> Botan::OctetString::bits_of ( ) const

◆ end()

const uint8_t* Botan::OctetString::end ( ) const
end of this string

Definition at line 41 of file symkey.h.

References Botan::operator^=().

Referenced by Botan::ECIES_KA_Operation::derive_secret().

41 { return begin() + m_data.size(); }
const uint8_t * begin() const
Definition: symkey.h:36

◆ length()

size_t Botan::OctetString::length ( ) const

◆ operator^=()

OctetString & Botan::OctetString::operator^= ( const OctetString other)

XOR the contents of another octet string into this one

otheroctet string
reference to this

Definition at line 85 of file symkey.cpp.

References begin(), length(), Botan::xor_buf(), and Botan::zeroise().

86  {
87  if(&k == this) { zeroise(m_data); return (*this); }
88  xor_buf(, k.begin(), std::min(length(), k.length()));
89  return (*this);
90  }
void xor_buf(uint8_t out[], const uint8_t in[], size_t length)
Definition: mem_ops.h:163
size_t length() const
Definition: symkey.h:25
void zeroise(std::vector< T, Alloc > &vec)
Definition: secmem.h:181

◆ set_odd_parity()

void Botan::OctetString::set_odd_parity ( )

Force to have odd parity

Definition at line 44 of file symkey.cpp.

45  {
46  const uint8_t ODD_PARITY[256] = {
47  0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07, 0x08, 0x08, 0x0B, 0x0B,
48  0x0D, 0x0D, 0x0E, 0x0E, 0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
49  0x19, 0x19, 0x1A, 0x1A, 0x1C, 0x1C, 0x1F, 0x1F, 0x20, 0x20, 0x23, 0x23,
50  0x25, 0x25, 0x26, 0x26, 0x29, 0x29, 0x2A, 0x2A, 0x2C, 0x2C, 0x2F, 0x2F,
51  0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37, 0x38, 0x38, 0x3B, 0x3B,
52  0x3D, 0x3D, 0x3E, 0x3E, 0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
53  0x49, 0x49, 0x4A, 0x4A, 0x4C, 0x4C, 0x4F, 0x4F, 0x51, 0x51, 0x52, 0x52,
54  0x54, 0x54, 0x57, 0x57, 0x58, 0x58, 0x5B, 0x5B, 0x5D, 0x5D, 0x5E, 0x5E,
55  0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67, 0x68, 0x68, 0x6B, 0x6B,
56  0x6D, 0x6D, 0x6E, 0x6E, 0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
57  0x79, 0x79, 0x7A, 0x7A, 0x7C, 0x7C, 0x7F, 0x7F, 0x80, 0x80, 0x83, 0x83,
58  0x85, 0x85, 0x86, 0x86, 0x89, 0x89, 0x8A, 0x8A, 0x8C, 0x8C, 0x8F, 0x8F,
59  0x91, 0x91, 0x92, 0x92, 0x94, 0x94, 0x97, 0x97, 0x98, 0x98, 0x9B, 0x9B,
60  0x9D, 0x9D, 0x9E, 0x9E, 0xA1, 0xA1, 0xA2, 0xA2, 0xA4, 0xA4, 0xA7, 0xA7,
61  0xA8, 0xA8, 0xAB, 0xAB, 0xAD, 0xAD, 0xAE, 0xAE, 0xB0, 0xB0, 0xB3, 0xB3,
62  0xB5, 0xB5, 0xB6, 0xB6, 0xB9, 0xB9, 0xBA, 0xBA, 0xBC, 0xBC, 0xBF, 0xBF,
63  0xC1, 0xC1, 0xC2, 0xC2, 0xC4, 0xC4, 0xC7, 0xC7, 0xC8, 0xC8, 0xCB, 0xCB,
64  0xCD, 0xCD, 0xCE, 0xCE, 0xD0, 0xD0, 0xD3, 0xD3, 0xD5, 0xD5, 0xD6, 0xD6,
65  0xD9, 0xD9, 0xDA, 0xDA, 0xDC, 0xDC, 0xDF, 0xDF, 0xE0, 0xE0, 0xE3, 0xE3,
66  0xE5, 0xE5, 0xE6, 0xE6, 0xE9, 0xE9, 0xEA, 0xEA, 0xEC, 0xEC, 0xEF, 0xEF,
67  0xF1, 0xF1, 0xF2, 0xF2, 0xF4, 0xF4, 0xF7, 0xF7, 0xF8, 0xF8, 0xFB, 0xFB,
68  0xFD, 0xFD, 0xFE, 0xFE };
70  for(size_t j = 0; j != m_data.size(); ++j)
71  m_data[j] = ODD_PARITY[m_data[j]];
72  }

◆ size()

size_t Botan::OctetString::size ( ) const

The documentation for this class was generated from the following files: