36                    symmetric_CTR *ctr)  in ctr_start()  argument
42    LTC_ARGCHK(ctr != NULL);  in ctr_start()
50    if ((err = cipher_descriptor[cipher].setup(key, keylen, num_rounds, &ctr->key)) != CRYPT_OK) {  in ctr_start()
55    ctr->blocklen = cipher_descriptor[cipher].block_length;  in ctr_start()
56    ctr->cipher   = cipher;  in ctr_start()
57    ctr->padlen   = 0;  in ctr_start()
58    ctr->mode     = ctr_mode & 1;  in ctr_start()
59    for (x = 0; x < ctr->blocklen; x++) {  in ctr_start()
60        ctr->ctr[x] = IV[x];  in ctr_start()
65       if (ctr->mode == CTR_COUNTER_LITTLE_ENDIAN) {  in ctr_start()
67          for (x = 0; x < ctr->blocklen; x++) {  in ctr_start()
68              ctr->ctr[x] = (ctr->ctr[x] + (unsigned char)1) & (unsigned char)255;  in ctr_start()
69              if (ctr->ctr[x] != (unsigned char)0) {  in ctr_start()
75          for (x = ctr->blocklen-1; x >= 0; x--) {  in ctr_start()
76              ctr->ctr[x] = (ctr->ctr[x] + (unsigned char)1) & (unsigned char)255;  in ctr_start()
77              if (ctr->ctr[x] != (unsigned char)0) {  in ctr_start()
84    return cipher_descriptor[ctr->cipher].ecb_encrypt(ctr->ctr, ctr->pad, &ctr->key);   in ctr_start()