-void des_ofb64_encrypt(register const unsigned char *in,
- register unsigned char *out, long length, des_key_schedule schedule,
- des_cblock ivec, int *num)
+void DES_ofb64_encrypt(register const unsigned char *in,
+ register unsigned char *out, long length,
+ DES_key_schedule *schedule, DES_cblock *ivec, int *num)