28 #if defined(POLARSSL_XTEA_C)
32 #if !defined(POLARSSL_XTEA_ALT)
38 #define GET_UINT32_BE(n,b,i) \
40 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
41 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
42 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
43 | ( (uint32_t) (b)[(i) + 3] ); \
48 #define PUT_UINT32_BE(n,b,i) \
50 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
51 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
52 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
53 (b)[(i) + 3] = (unsigned char) ( (n) ); \
66 for( i = 0; i < 4; i++ )
76 unsigned char output[8])
78 uint32_t *k, v0, v1, i;
87 uint32_t sum = 0, delta = 0x9E3779B9;
89 for( i = 0; i < 32; i++ )
91 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
93 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
98 uint32_t delta = 0x9E3779B9, sum = delta * 32;
100 for( i = 0; i < 32; i++ )
102 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
104 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
121 unsigned char *input,
122 unsigned char *output)
125 unsigned char temp[8];
134 memcpy( temp, input, 8 );
137 for(i = 0; i < 8; i++)
138 output[i] = (
unsigned char)( output[i] ^ iv[i] );
140 memcpy( iv, temp, 8 );
151 for( i = 0; i < 8; i++ )
152 output[i] = (
unsigned char)( input[i] ^ iv[i] );
155 memcpy( iv, output, 8 );
167 #if defined(POLARSSL_SELF_TEST)
176 static const unsigned char xtea_test_key[6][16] =
178 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
179 0x0c, 0x0d, 0x0e, 0x0f },
180 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
181 0x0c, 0x0d, 0x0e, 0x0f },
182 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
183 0x0c, 0x0d, 0x0e, 0x0f },
184 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
185 0x00, 0x00, 0x00, 0x00 },
186 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
187 0x00, 0x00, 0x00, 0x00 },
188 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
189 0x00, 0x00, 0x00, 0x00 }
192 static const unsigned char xtea_test_pt[6][8] =
194 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
195 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
196 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
197 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
198 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
199 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
202 static const unsigned char xtea_test_ct[6][8] =
204 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
205 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
206 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
207 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
208 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
209 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
218 unsigned char buf[8];
221 for( i = 0; i < 6; i++ )
224 printf(
" XTEA test #%d: ", i + 1 );
226 memcpy( buf, xtea_test_pt[i], 8 );
228 xtea_setup( &ctx, (
unsigned char *) xtea_test_key[i] );
231 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
234 printf(
"failed\n" );
240 printf(
"passed\n" );