Fix compilation of AES implementation, document that is is not actually used
This commit is contained in:
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d1b7187085
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5ca417069a
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@ -36,6 +36,12 @@ set(TEST_SRC_FILES tests/utils.h tests/passwordfiletests.cpp tests/entrytests.cp
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set(DOC_FILES README.md)
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option(COMPILE_AES_SOURCES "compile AES sources" OFF)
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if (COMPILE_AES_SOURCES)
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list(APPEND HEADER_FILES aes/aes.h)
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list(APPEND SRC_FILES aes/aes.cpp)
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endif ()
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# find c++utilities
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set(CONFIGURATION_PACKAGE_SUFFIX
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""
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484
aes/aes.cpp
484
aes/aes.cpp
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@ -4,7 +4,16 @@
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namespace Crypto {
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Aes::byte Aes::sbox[16][16] = {
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/*!
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* \class Aes
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* \brief The Aes class implements AES encryption/decryption.
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* \deprecated This class is not used by the rest of the library and not compiled by default.
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* OpenSSL's crypto library is used instead. This class only serves educational
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* purposes.
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*/
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// clang-format off
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Aes::byte Aes::sbox[16][16] = {
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{ 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76 },
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{ 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0 },
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{ 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15 },
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@ -21,9 +30,9 @@ namespace Crypto {
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{ 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E },
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{ 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF },
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{ 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16 }
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};
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};
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Aes::byte Aes::inv_sbox[16][16] = {
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Aes::byte Aes::inv_sbox[16][16] = {
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{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb },
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{ 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb },
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{ 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e },
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@ -40,9 +49,9 @@ namespace Crypto {
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{ 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef },
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{ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 },
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{ 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d }
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};
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};
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Aes::word Aes::rcon[52] = {
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Aes::word Aes::rcon[52] = {
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0x00000000, 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000, 0x20000000, 0x40000000,
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0x80000000, 0x1B000000, 0x36000000, 0x6C000000, 0xD8000000, 0xAB000000, 0x4D000000, 0x9A000000,
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0x2F000000, 0x5E000000, 0xBC000000, 0x63000000, 0xC6000000, 0x97000000, 0x35000000, 0x6A000000,
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@ -50,362 +59,337 @@ namespace Crypto {
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0x72000000, 0xE4000000, 0xD3000000, 0xBD000000, 0x61000000, 0xC2000000, 0x9F000000, 0x25000000,
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0x4A000000, 0x94000000, 0x33000000, 0x66000000, 0xCC000000, 0x83000000, 0x1D000000, 0x3A000000,
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0x74000000, 0xE8000000, 0xCB000000, 0x8D000000
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};
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};
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// clang-format on
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Aes::Aes() :
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key_length(0),
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num_rounds(0),
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w(0)
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{
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Aes::Aes()
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: keyLength(0)
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, numRounds(0)
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, w(0)
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{
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memset(state, 0, 16);
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}
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}
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Aes::~Aes()
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{
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}
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Aes::~Aes()
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{
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}
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Aes::byte Aes::gmul(byte a, byte b)
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{
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Aes::byte Aes::gmul(byte a, byte b)
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{
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unsigned char p = 0;
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unsigned char hi;
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for(byte i = 0; i < 8; ++i) {
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if((b & 1) == 1)
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for (byte i = 0; i < 8; ++i) {
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if ((b & 1) == 1)
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p ^= a;
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hi = (a & 0x80);
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a <<= 1;
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if(hi == 0x80)
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if (hi == 0x80)
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a ^= 0x1b;
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b >>= 1;
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}
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return p;
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}
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}
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void Aes::rotWord(word *b)
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{
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{
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byte tmp[4];
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memcpy(tmp, b, 4);
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byte tmpb = tmp[3];
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for(byte i = 3; i > 0; --i)
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for (byte i = 3; i > 0; --i)
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tmp[i] = tmp[i - 1];
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tmp[0] = tmpb;
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memcpy(b, tmp, 4);
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}
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}
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void Aes::subWord( word *b )
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{
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byte tmp[ 4 ];
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memcpy( tmp, b, 4 );
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void Aes::subWord(word *b)
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{
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byte tmp[4];
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memcpy(tmp, b, 4);
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for( byte i = 0; i < 4; ++i )
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tmp[ i ] = sbox[ tmp[ i ] >> 4 ][ tmp[ i ] & 0x0f ];
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for (byte i = 0; i < 4; ++i)
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tmp[i] = sbox[tmp[i] >> 4][tmp[i] & 0x0f];
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memcpy( b, tmp, 4 );
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}
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memcpy(b, tmp, 4);
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}
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void Aes::expandKey( byte *key )
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{
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if( w )
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delete [] w;
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void Aes::expandKey(byte *key)
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{
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if (w)
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delete[] w;
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w = new word[ 4 * ( num_rounds + 1 ) ];
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w = new word[4 * (numRounds + 1)];
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for( byte iw = 0, ib = 0; iw < key_length; ++iw, ib += 4 )
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w[ iw ] = ( key[ ib ] << 24 ) + ( key[ ib + 1 ] << 16 ) + ( key[ ib + 2 ] << 8 ) + key[ ib + 3 ];
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for (byte iw = 0, ib = 0; iw < keyLength; ++iw, ib += 4)
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w[iw] = static_cast<word>((key[ib] << 24) + (key[ib + 1] << 16) + (key[ib + 2] << 8) + key[ib + 3]);
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word tmp;
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for( byte i = key_length; i < ( 4 * ( num_rounds + 1 ) ); ++i ) {
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for (byte i = keyLength; i < (4 * (numRounds + 1)); ++i) {
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tmp = w[ i - 1 ];
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tmp = w[i - 1];
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if( ( i % key_length ) == 0 ) {
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rotWord( &tmp );
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subWord( &tmp );
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tmp ^= rcon[ i / key_length ];
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} else if( ( key_length > 6 ) && ( ( i % key_length ) == 4 ) ) {
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subWord( &tmp );
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if ((i % keyLength) == 0) {
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rotWord(&tmp);
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subWord(&tmp);
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tmp ^= rcon[i / keyLength];
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} else if ((keyLength > 6) && ((i % keyLength) == 4)) {
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subWord(&tmp);
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}
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w[ i ] = w[ i - key_length ] ^ tmp;
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}
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w[i] = w[i - keyLength] ^ tmp;
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}
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}
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void Aes::addRoundKey( byte round )
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{
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for( byte col = 0; col < 4; ++col )
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for( byte row = 0; row < 4; ++row )
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state[ row ][ col ] ^= ( w[ round * 4 + col ] >> ( 24 - row * 8 ) ) & 0x000000ff;
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}
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void Aes::addRoundKey(byte round)
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{
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for (byte col = 0; col < 4; ++col)
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for (byte row = 0; row < 4; ++row)
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state[row][col] ^= static_cast<byte>((w[round * 4 + col] >> (24 - row * 8)) & 0x000000ff);
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}
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void Aes::shiftRows( void )
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{
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void Aes::shiftRows(void)
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{
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byte tmp = 0;
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tmp = state[ 1 ][ 0 ];
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state[ 1 ][ 0 ] = state[ 1 ][ 1 ];
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state[ 1 ][ 1 ] = state[ 1 ][ 2 ];
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state[ 1 ][ 2 ] = state[ 1 ][ 3 ];
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state[ 1 ][ 3 ] = tmp;
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tmp = state[1][0];
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state[1][0] = state[1][1];
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state[1][1] = state[1][2];
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state[1][2] = state[1][3];
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state[1][3] = tmp;
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tmp = state[ 2 ][ 0 ];
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state[ 2 ][ 0 ] = state[ 2 ][ 2 ];
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state[ 2 ][ 2 ] = tmp;
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tmp = state[ 2 ][ 1 ];
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state[ 2 ][ 1 ] = state[ 2 ][ 3 ];
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state[ 2 ][ 3 ] = tmp;
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tmp = state[2][0];
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state[2][0] = state[2][2];
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state[2][2] = tmp;
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tmp = state[2][1];
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state[2][1] = state[2][3];
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state[2][3] = tmp;
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tmp = state[ 3 ][ 3 ];
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state[ 3 ][ 3 ] = state[ 3 ][ 2 ];
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state[ 3 ][ 2 ] = state[ 3 ][ 1 ];
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state[ 3 ][ 1 ] = state[ 3 ][ 0 ];
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state[ 3 ][ 0 ] = tmp;
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}
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tmp = state[3][3];
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state[3][3] = state[3][2];
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state[3][2] = state[3][1];
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state[3][1] = state[3][0];
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state[3][0] = tmp;
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}
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void Aes::invShiftRows( void )
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{
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void Aes::invShiftRows(void)
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{
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byte tmp = 0;
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tmp = state[ 3 ][ 0 ];
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state[ 3 ][ 0 ] = state[ 3 ][ 1 ];
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state[ 3 ][ 1 ] = state[ 3 ][ 2 ];
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state[ 3 ][ 2 ] = state[ 3 ][ 3 ];
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state[ 3 ][ 3 ] = tmp;
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tmp = state[3][0];
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state[3][0] = state[3][1];
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state[3][1] = state[3][2];
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state[3][2] = state[3][3];
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state[3][3] = tmp;
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tmp = state[ 2 ][ 0 ];
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state[ 2 ][ 0 ] = state[ 2 ][ 2 ];
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state[ 2 ][ 2 ] = tmp;
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tmp = state[ 2 ][ 1 ];
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state[ 2 ][ 1 ] = state[ 2 ][ 3 ];
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state[ 2 ][ 3 ] = tmp;
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tmp = state[2][0];
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state[2][0] = state[2][2];
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state[2][2] = tmp;
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tmp = state[2][1];
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state[2][1] = state[2][3];
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state[2][3] = tmp;
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tmp = state[ 1 ][ 3 ];
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state[ 1 ][ 3 ] = state[ 1 ][ 2 ];
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state[ 1 ][ 2 ] = state[ 1 ][ 1 ];
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state[ 1 ][ 1 ] = state[ 1 ][ 0 ];
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state[ 1 ][ 0 ] = tmp;
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}
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tmp = state[1][3];
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state[1][3] = state[1][2];
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state[1][2] = state[1][1];
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state[1][1] = state[1][0];
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state[1][0] = tmp;
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}
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void Aes::mixColumns( void )
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{
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void Aes::mixColumns(void)
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{
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unsigned char a[4];
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unsigned char b[4];
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unsigned char h = 0;
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for( byte col = 0; col < 4; ++col ) {
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for( byte row = 0; row < 4; ++row ) {
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a[ row ] = state[ row ][ col ];
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h = state[ row ][ col ] & 0x80;
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b[ row ] = state[ row ][ col ] << 1;
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if( h == 0x80 )
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b[ row ] ^= 0x1b;
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}
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state[ 0 ][ col ] = b[ 0 ] ^ a[ 3 ] ^ a[ 2 ] ^ b[ 1 ] ^ a[ 1 ];
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state[ 1 ][ col ] = b[ 1 ] ^ a[ 0 ] ^ a[ 3 ] ^ b[ 2 ] ^ a[ 2 ];
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state[ 2 ][ col ] = b[ 2 ] ^ a[ 1 ] ^ a[ 0 ] ^ b[ 3 ] ^ a[ 3 ];
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state[ 3 ][ col ] = b[ 3 ] ^ a[ 2 ] ^ a[ 1 ] ^ b[ 0 ] ^ a[ 0 ];
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for (byte col = 0; col < 4; ++col) {
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for (byte row = 0; row < 4; ++row) {
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a[row] = state[row][col];
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h = state[row][col] & 0x80;
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b[row] = static_cast<byte>(state[row][col] << 1);
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if (h == 0x80)
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b[row] ^= 0x1b;
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}
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state[0][col] = b[0] ^ a[3] ^ a[2] ^ b[1] ^ a[1];
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state[1][col] = b[1] ^ a[0] ^ a[3] ^ b[2] ^ a[2];
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state[2][col] = b[2] ^ a[1] ^ a[0] ^ b[3] ^ a[3];
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state[3][col] = b[3] ^ a[2] ^ a[1] ^ b[0] ^ a[0];
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}
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}
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void Aes::invMixColumns( void )
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{
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void Aes::invMixColumns(void)
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{
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unsigned char a[4];
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for( byte col = 0; col < 4; ++col ) {
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for (byte col = 0; col < 4; ++col) {
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for (byte row = 0; row < 4; ++row)
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a[row] = state[row][col];
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state[0][col] = gmul(a[0], 14) ^ gmul(a[3], 9) ^ gmul(a[2], 13) ^ gmul(a[1], 11);
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state[1][col] = gmul(a[1], 14) ^ gmul(a[0], 9) ^ gmul(a[3], 13) ^ gmul(a[2], 11);
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state[2][col] = gmul(a[2], 14) ^ gmul(a[1], 9) ^ gmul(a[0], 13) ^ gmul(a[3], 11);
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state[3][col] = gmul(a[3], 14) ^ gmul(a[2], 9) ^ gmul(a[1], 13) ^ gmul(a[0], 11);
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}
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}
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for( byte row = 0; row < 4; ++ row )
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a[ row ] = state[ row ][ col ];
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bool Aes::setKey(char *key)
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{
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size_t keyLen = strlen(key);
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state[ 0 ][ col ] = gmul( a[ 0 ], 14 ) ^ gmul( a[ 3 ], 9 ) ^ gmul( a[ 2 ], 13 ) ^ gmul( a[ 1 ], 11 );
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state[ 1 ][ col ] = gmul( a[ 1 ], 14 ) ^ gmul( a[ 0 ], 9 ) ^ gmul( a[ 3 ], 13 ) ^ gmul( a[ 2 ], 11 );
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state[ 2 ][ col ] = gmul( a[ 2 ], 14 ) ^ gmul( a[ 1 ], 9 ) ^ gmul( a[ 0 ], 13 ) ^ gmul( a[ 3 ], 11 );
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state[ 3 ][ col ] = gmul( a[ 3 ], 14 ) ^ gmul( a[ 2 ], 9 ) ^ gmul( a[ 1 ], 13 ) ^ gmul( a[ 0 ], 11 );
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byte *wKey = 0;
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byte desKeyLen = 0;
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if (keyLen <= 16) {
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keyLength = 4;
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numRounds = 10;
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desKeyLen = 16;
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} else if (keyLen <= 24) {
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keyLength = 6;
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numRounds = 12;
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desKeyLen = 24;
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} else if (keyLen <= 32) {
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keyLength = 8;
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numRounds = 14;
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desKeyLen = 32;
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}
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}
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bool Aes::setKey( char *key )
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{
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size_t key_len = strlen( key );
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byte *w_key = 0;
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byte des_key_len = 0;
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if( key_len <= 16 ) {
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key_length = 4;
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num_rounds = 10;
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des_key_len = 16;
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} else if( key_len <= 24 ) {
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key_length = 6;
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num_rounds = 12;
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des_key_len = 24;
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} else if( key_len <= 32 ) {
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key_length = 8;
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num_rounds = 14;
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des_key_len = 32;
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}
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w_key = new byte[ des_key_len ];
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for( byte i = 0, t = 0; t < des_key_len; ++i, ++t ) {
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if( i == key_len )
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wKey = new byte[desKeyLen];
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for (byte i = 0, t = 0; t < desKeyLen; ++i, ++t) {
|
||||
if (i == keyLen)
|
||||
i = 0;
|
||||
*( w_key + t ) = *( key + i );
|
||||
*(wKey + t) = static_cast<byte>(*(key + i));
|
||||
}
|
||||
|
||||
expandKey( w_key );
|
||||
|
||||
delete [] w_key;
|
||||
|
||||
expandKey(wKey);
|
||||
delete[] wKey;
|
||||
return true;
|
||||
}
|
||||
|
||||
void Aes::cipher(void)
|
||||
{
|
||||
addRoundKey(0);
|
||||
|
||||
for (byte round = 1; round < numRounds; ++round) {
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
state[row][col] = sbox[state[row][col] >> 4][state[row][col] & 0x0f];
|
||||
shiftRows();
|
||||
mixColumns();
|
||||
addRoundKey(round);
|
||||
}
|
||||
|
||||
void Aes::cipher( void )
|
||||
{
|
||||
addRoundKey( 0 );
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
state[row][col] = sbox[state[row][col] >> 4][state[row][col] & 0x0f];
|
||||
|
||||
for( byte round = 1; round < num_rounds; ++round ) {
|
||||
shiftRows();
|
||||
addRoundKey(numRounds);
|
||||
}
|
||||
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
state[ row ][ col ] = sbox[ state[ row ][ col ] >> 4 ][ state[ row ][ col ] & 0x0f ];
|
||||
void Aes::invCipher(void)
|
||||
{
|
||||
addRoundKey(numRounds);
|
||||
|
||||
shiftRows( );
|
||||
mixColumns( );
|
||||
addRoundKey( round );
|
||||
for (byte round = (numRounds - 1); round > 0; --round) {
|
||||
invShiftRows();
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
state[row][col] = inv_sbox[state[row][col] >> 4][state[row][col] & 0x0f];
|
||||
addRoundKey(round);
|
||||
invMixColumns();
|
||||
}
|
||||
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
state[ row ][ col ] = sbox[ state[ row ][ col ] >> 4 ][ state[ row ][ col ] & 0x0f ];
|
||||
invShiftRows();
|
||||
|
||||
shiftRows( );
|
||||
addRoundKey( num_rounds );
|
||||
}
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
state[row][col] = inv_sbox[state[row][col] >> 4][state[row][col] & 0x0f];
|
||||
|
||||
void Aes::invCipher( void )
|
||||
{
|
||||
addRoundKey( num_rounds );
|
||||
addRoundKey(0);
|
||||
}
|
||||
|
||||
for( byte round = ( num_rounds - 1 ); round > 0; --round ) {
|
||||
|
||||
invShiftRows( );
|
||||
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
state[ row ][ col ] = inv_sbox[ state[ row ][ col ] >> 4 ][ state[ row ][ col ] & 0x0f ];
|
||||
|
||||
addRoundKey( round );
|
||||
invMixColumns( );
|
||||
}
|
||||
|
||||
invShiftRows( );
|
||||
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
state[ row ][ col ] = inv_sbox[ state[ row ][ col ] >> 4 ][ state[ row ][ col ] & 0x0f ];
|
||||
|
||||
addRoundKey( 0 );
|
||||
}
|
||||
|
||||
size_t Aes::encrypt( char **data, size_t length, char *key )
|
||||
{
|
||||
if( length == 0 )
|
||||
size_t Aes::encrypt(char **data, std::size_t length, char *key)
|
||||
{
|
||||
if (length == 0)
|
||||
return 0;
|
||||
|
||||
if( !setKey( key ) )
|
||||
if (!setKey(key))
|
||||
return 0;
|
||||
|
||||
size_t old_length = length;
|
||||
while( length % 16 )
|
||||
size_t oldLength = length;
|
||||
while (length % 16)
|
||||
++length;
|
||||
|
||||
char *buffer = new char[ length ];
|
||||
memset( buffer, 0, length );
|
||||
memcpy( buffer, *data, old_length );
|
||||
char *buffer = new char[length];
|
||||
memset(buffer, 0, length);
|
||||
memcpy(buffer, *data, oldLength);
|
||||
|
||||
delete [] *data;
|
||||
delete[] * data;
|
||||
*data = buffer;
|
||||
|
||||
size_t cur_block = 0;
|
||||
size_t curBlock = 0;
|
||||
|
||||
do {
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
state[row][col] = static_cast<byte>((*data)[curBlock * 16 + row + 4 * col]);
|
||||
cipher();
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
(*data)[curBlock * 16 + row + 4 * col] = static_cast<char>(state[row][col]);
|
||||
++curBlock;
|
||||
} while (curBlock * 16 != length);
|
||||
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
state[ row ][ col ] = static_cast< byte >( ( *data )[ cur_block * 16 + row + 4 * col ] );
|
||||
return curBlock;
|
||||
}
|
||||
|
||||
cipher( );
|
||||
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
( *data )[ cur_block * 16 + row + 4 * col ] = static_cast< char >( state[ row ][ col ] );
|
||||
|
||||
++cur_block;
|
||||
|
||||
} while( cur_block * 16 != length );
|
||||
|
||||
return cur_block;
|
||||
}
|
||||
|
||||
size_t Aes::decrypt( char **data, size_t length, char *key )
|
||||
{
|
||||
if( length == 0 )
|
||||
size_t Aes::decrypt(char **data, std::size_t length, char *key)
|
||||
{
|
||||
if (length == 0)
|
||||
return 0;
|
||||
|
||||
if( !setKey( key ) )
|
||||
if (!setKey(key))
|
||||
return 0;
|
||||
|
||||
size_t old_length = length;
|
||||
while( length % 16 )
|
||||
std::size_t oldLength = length;
|
||||
while (length % 16)
|
||||
++length;
|
||||
|
||||
char *buffer = new char[ length ];
|
||||
memset( buffer, 0, length );
|
||||
memcpy( buffer, *data, old_length );
|
||||
char *buffer = new char[length];
|
||||
memset(buffer, 0, length);
|
||||
memcpy(buffer, *data, oldLength);
|
||||
|
||||
delete [] *data;
|
||||
delete[] * data;
|
||||
*data = buffer;
|
||||
|
||||
size_t cur_block = 0;
|
||||
std::size_t curBlock = 0;
|
||||
|
||||
do {
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
state[row][col] = static_cast<byte>((*data)[curBlock * 16 + row + 4 * col]);
|
||||
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
state[ row ][ col ] = static_cast< byte >( ( *data )[ cur_block * 16 + row + 4 * col ] );
|
||||
invCipher();
|
||||
|
||||
invCipher( );
|
||||
for (byte col = 0; col < 4; ++col)
|
||||
for (byte row = 0; row < 4; ++row)
|
||||
(*data)[curBlock * 16 + row + 4 * col] = static_cast<char>(state[row][col]);
|
||||
|
||||
for( byte col = 0; col < 4; ++col )
|
||||
for( byte row = 0; row < 4; ++row )
|
||||
( *data )[ cur_block * 16 + row + 4 * col ] = static_cast< char >( state[ row ][ col ] );
|
||||
++curBlock;
|
||||
|
||||
++cur_block;
|
||||
|
||||
} while( cur_block * 16 != length );
|
||||
} while (curBlock * 16 != length);
|
||||
|
||||
--length;
|
||||
|
||||
while( ! ( ( *buffer ) + length ) )
|
||||
while (!(static_cast<decltype(length)>(*buffer) + length))
|
||||
--length;
|
||||
|
||||
++length;
|
||||
|
||||
return length;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
} // namespace Crypto
|
||||
|
|
|
|||
22
aes/aes.h
22
aes/aes.h
|
|
@ -1,28 +1,28 @@
|
|||
#ifndef AES_INCLUDED
|
||||
#define AES_INCLUDED AES_INCLUDED
|
||||
|
||||
#include <c++utilities/application/global.h>
|
||||
#include "../global.h"
|
||||
|
||||
#include <cstring>
|
||||
|
||||
namespace Crypto {
|
||||
|
||||
class LIB_EXPORT Aes {
|
||||
class PASSWORD_FILE_EXPORT Aes {
|
||||
|
||||
public:
|
||||
typedef unsigned char byte;
|
||||
typedef unsigned long word;
|
||||
using byte = unsigned char;
|
||||
using word = unsigned long;
|
||||
|
||||
Aes();
|
||||
~Aes();
|
||||
|
||||
size_t encrypt(char **data, size_t length, char *key);
|
||||
size_t decrypt(char **data, size_t length, char *key);
|
||||
std::size_t encrypt(char **data, std::size_t length, char *key);
|
||||
std::size_t decrypt(char **data, std::size_t length, char *key);
|
||||
|
||||
private:
|
||||
static byte gmul(byte a, byte b);
|
||||
static void rotWord(word *b );
|
||||
static void subWord(word *b );
|
||||
static void rotWord(word *b);
|
||||
static void subWord(word *b);
|
||||
|
||||
bool setKey(char *key);
|
||||
void expandKey(byte *key);
|
||||
|
|
@ -42,13 +42,13 @@ private:
|
|||
static byte inv_sbox[16][16];
|
||||
static word rcon[52];
|
||||
|
||||
byte key_length;
|
||||
byte num_rounds;
|
||||
byte keyLength;
|
||||
byte numRounds;
|
||||
|
||||
word *w;
|
||||
byte state[4][4];
|
||||
};
|
||||
|
||||
}
|
||||
} // namespace Crypto
|
||||
|
||||
#endif /* AES_INCLUDED */
|
||||
|
|
|
|||
Loading…
Reference in New Issue