Coverage Report

Created: 2020-06-30 13:58

/src/botan/src/lib/base/symkey.cpp
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Source (jump to first uncovered line)
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/*
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* OctetString
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* (C) 1999-2007 Jack Lloyd
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*
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* Botan is released under the Simplified BSD License (see license.txt)
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*/
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#include <botan/symkey.h>
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#include <botan/rng.h>
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#include <botan/hex.h>
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#include <algorithm>
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namespace Botan {
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/*
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* Create an OctetString from RNG output
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*/
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OctetString::OctetString(RandomNumberGenerator& rng,
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                         size_t len)
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   {
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   rng.random_vec(m_data, len);
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   }
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/*
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* Create an OctetString from a hex string
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*/
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OctetString::OctetString(const std::string& hex_string)
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   {
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   if(!hex_string.empty())
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      {
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      m_data.resize(1 + hex_string.length() / 2);
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      m_data.resize(hex_decode(m_data.data(), hex_string));
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      }
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   }
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/*
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* Create an OctetString from a byte string
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*/
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OctetString::OctetString(const uint8_t in[], size_t n)
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   {
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   m_data.assign(in, in + n);
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   }
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/*
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* Set the parity of each key byte to odd
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*/
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void OctetString::set_odd_parity()
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0
   {
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   const uint8_t ODD_PARITY[256] = {
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0
      0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07, 0x08, 0x08, 0x0B, 0x0B,
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      0x0D, 0x0D, 0x0E, 0x0E, 0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
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      0x19, 0x19, 0x1A, 0x1A, 0x1C, 0x1C, 0x1F, 0x1F, 0x20, 0x20, 0x23, 0x23,
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      0x25, 0x25, 0x26, 0x26, 0x29, 0x29, 0x2A, 0x2A, 0x2C, 0x2C, 0x2F, 0x2F,
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      0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37, 0x38, 0x38, 0x3B, 0x3B,
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      0x3D, 0x3D, 0x3E, 0x3E, 0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
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      0x49, 0x49, 0x4A, 0x4A, 0x4C, 0x4C, 0x4F, 0x4F, 0x51, 0x51, 0x52, 0x52,
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      0x54, 0x54, 0x57, 0x57, 0x58, 0x58, 0x5B, 0x5B, 0x5D, 0x5D, 0x5E, 0x5E,
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      0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67, 0x68, 0x68, 0x6B, 0x6B,
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      0x6D, 0x6D, 0x6E, 0x6E, 0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
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      0x79, 0x79, 0x7A, 0x7A, 0x7C, 0x7C, 0x7F, 0x7F, 0x80, 0x80, 0x83, 0x83,
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      0x85, 0x85, 0x86, 0x86, 0x89, 0x89, 0x8A, 0x8A, 0x8C, 0x8C, 0x8F, 0x8F,
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      0x91, 0x91, 0x92, 0x92, 0x94, 0x94, 0x97, 0x97, 0x98, 0x98, 0x9B, 0x9B,
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      0x9D, 0x9D, 0x9E, 0x9E, 0xA1, 0xA1, 0xA2, 0xA2, 0xA4, 0xA4, 0xA7, 0xA7,
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      0xA8, 0xA8, 0xAB, 0xAB, 0xAD, 0xAD, 0xAE, 0xAE, 0xB0, 0xB0, 0xB3, 0xB3,
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      0xB5, 0xB5, 0xB6, 0xB6, 0xB9, 0xB9, 0xBA, 0xBA, 0xBC, 0xBC, 0xBF, 0xBF,
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      0xC1, 0xC1, 0xC2, 0xC2, 0xC4, 0xC4, 0xC7, 0xC7, 0xC8, 0xC8, 0xCB, 0xCB,
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      0xCD, 0xCD, 0xCE, 0xCE, 0xD0, 0xD0, 0xD3, 0xD3, 0xD5, 0xD5, 0xD6, 0xD6,
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      0xD9, 0xD9, 0xDA, 0xDA, 0xDC, 0xDC, 0xDF, 0xDF, 0xE0, 0xE0, 0xE3, 0xE3,
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      0xE5, 0xE5, 0xE6, 0xE6, 0xE9, 0xE9, 0xEA, 0xEA, 0xEC, 0xEC, 0xEF, 0xEF,
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      0xF1, 0xF1, 0xF2, 0xF2, 0xF4, 0xF4, 0xF7, 0xF7, 0xF8, 0xF8, 0xFB, 0xFB,
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      0xFD, 0xFD, 0xFE, 0xFE };
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0
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   for(size_t j = 0; j != m_data.size(); ++j)
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      m_data[j] = ODD_PARITY[m_data[j]];
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   }
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/*
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* Hex encode an OctetString
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*/
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std::string OctetString::to_string() const
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   {
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   return hex_encode(m_data.data(), m_data.size());
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   }
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/*
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* XOR Operation for OctetStrings
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*/
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OctetString& OctetString::operator^=(const OctetString& k)
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   {
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   if(&k == this) { zeroise(m_data); return (*this); }
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   xor_buf(m_data.data(), k.begin(), std::min(length(), k.length()));
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   return (*this);
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   }
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/*
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* Equality Operation for OctetStrings
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*/
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bool operator==(const OctetString& s1, const OctetString& s2)
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   {
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   return (s1.bits_of() == s2.bits_of());
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   }
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/*
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* Unequality Operation for OctetStrings
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*/
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bool operator!=(const OctetString& s1, const OctetString& s2)
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   {
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   return !(s1 == s2);
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   }
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/*
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* Append Operation for OctetStrings
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*/
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OctetString operator+(const OctetString& k1, const OctetString& k2)
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   {
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   secure_vector<uint8_t> out;
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   out += k1.bits_of();
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   out += k2.bits_of();
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   return OctetString(out);
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   }
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/*
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* XOR Operation for OctetStrings
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*/
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OctetString operator^(const OctetString& k1, const OctetString& k2)
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   {
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   secure_vector<uint8_t> out(std::max(k1.length(), k2.length()));
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   copy_mem(out.data(), k1.begin(), k1.length());
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   xor_buf(out.data(), k2.begin(), k2.length());
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   return OctetString(out);
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   }
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}