-void des_ede3_cfb64_encrypt(in, out, length, ks1,ks2,ks3, ivec, num, enc)
-unsigned char *in;
-unsigned char *out;
-long length;
-des_key_schedule ks1,ks2,ks3;
-des_cblock (*ivec);
-int *num;
-int enc;
+void des_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, des_key_schedule *ks1,
+ des_key_schedule *ks2, des_key_schedule *ks3,
+ des_cblock *ivec, int *num, int enc)