-void des_ofb64_encrypt(in, out, length, schedule, ivec, num)
-register 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)