- des_cbc_encrypt(dest, src, len, &scheds[0]);
- des_cbc_decrypt(dest, src, len, &scheds[1]);
- des_cbc_encrypt(dest, src, len, &scheds[2]);
+ des_cbc_encrypt(blk, len, &scheds[0]);
+ des_cbc_decrypt(blk, len, &scheds[1]);
+ des_cbc_encrypt(blk, len, &scheds[2]);