void des(unsigned char *inblock, unsigned char *outblock)
{
unsigned long work[2];
scrunch(inblock, work);
desfunc(work, KnL);
unscrun(work, outblock);
return;
}
void D3DES::des(const uint8_t * inblock, uint8_t * outblock) {
unsigned long work[2];
scrunch(inblock, work);
desfunc(work, KnL);
unscrun(work, outblock);
return;
}
// -----------------------------------------------------------------------
// des_block
// Encrpts/Decrypts(according to the key currently loaded int the
// internal key register) one block of eight bytes at address 'in'
// into the block at address 'out'. They can be the same.
//
// "in"
// "out"
// -----------------------------------------------------------------------
void DES::des_block(unsigned char *in, unsigned char *out)
{
unsigned long work[2];
scrunch(in, work);
desfunc(work, KnL);
unscrun(work, out);
}
void
des (DESContext * ctx, unsigned char *inblock, unsigned char *outblock)
{
unsigned long work[2];
scrunch (inblock, work);
desfunc (work, ctx->KnL);
unscrun (work, outblock);
return;
}
/*!
Decrypts a block of text with LTC_DES
@param ct The input ciphertext (8 bytes)
@param pt The output plaintext (8 bytes)
@param skey The key as scheduled
@return CRYPT_OK if successful
*/
static void ltc_des_ecb_decrypt(const ccecb_ctx *skey, unsigned long nblocks, const void *in, void *out)
{
uint32_t work[2];
const ltc_des_keysched *des;
const unsigned char *ct=in;
unsigned char *pt=out;
des = (const ltc_des_keysched *)skey;
while(nblocks--) {
CC_LOAD32_BE(work[0], ct+0);
CC_LOAD32_BE(work[1], ct+4);
desfunc(work, des->dk);
CC_STORE32_BE(work[0],pt+0);
CC_STORE32_BE(work[1],pt+4);
ct+=8;
pt+=8;
}
}
