Lines Matching refs:f8
15 F8 implementation, encrypt data, Tom St Denis
21 F8 encrypt
25 @param f8 F8 state
28 int f8_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_F8 *f8)
34 LTC_ARGCHK(f8 != NULL);
35 if ((err = cipher_is_valid(f8->cipher)) != CRYPT_OK) {
40 if (f8->blocklen < 0 || f8->blocklen > (int)sizeof(f8->IV) ||
41 f8->padlen < 0 || f8->padlen > (int)sizeof(f8->IV)) {
48 if (f8->padlen == f8->blocklen) {
50 STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
51 ++(f8->blockcnt);
52 for (x = 0; x < f8->blocklen; x++) {
53 f8->IV[x] ^= f8->MIV[x] ^ buf[x];
55 if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
58 f8->padlen = 0;
62 if (f8->padlen == 0) {
63 while (len >= (unsigned long)f8->blocklen) {
64 STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
65 ++(f8->blockcnt);
66 for (x = 0; x < f8->blocklen; x += sizeof(LTC_FAST_TYPE)) {
67 *((LTC_FAST_TYPE*)(&ct[x])) = *((LTC_FAST_TYPE*)(&pt[x])) ^ *((LTC_FAST_TYPE*)(&f8->IV[x]));
68 *((LTC_FAST_TYPE*)(&f8->IV[x])) ^= *((LTC_FAST_TYPE*)(&f8->MIV[x])) ^ *((LTC_FAST_TYPE*)(&buf[x]));
70 if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
81 if (f8->padlen == f8->blocklen) {
83 STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
84 ++(f8->blockcnt);
85 for (x = 0; x < f8->blocklen; x++) {
86 f8->IV[x] ^= f8->MIV[x] ^ buf[x];
88 if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
91 f8->padlen = 0;
93 *ct++ = *pt++ ^ f8->IV[f8->padlen++];
101 /* $Source: /cvs/libtom/libtomcrypt/src/modes/f8/f8_encrypt.c,v $ */
