-void des_ede3_ofb64_encrypt(in, out, length, k1,k2,k3, ivec, num)
-register unsigned char *in;
-register unsigned char *out;
-long length;
-des_key_schedule k1,k2,k3;
-des_cblock (*ivec);
-int *num;
+void des_ede3_ofb64_encrypt(register const unsigned char *in,
+ register unsigned char *out, long length, des_key_schedule k1,
+ des_key_schedule k2, des_key_schedule k3, des_cblock *ivec,
+ int *num)