* used. The extra state information to record how much of the
* 64bit block we have used is contained in *num;
*/
-void idea_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
- IDEA_KEY_SCHEDULE *schedule, unsigned char *ivec, int *num)
+void idea_ofb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, IDEA_KEY_SCHEDULE *schedule,
+ unsigned char *ivec, int *num)
{
register unsigned long v0,v1,t;
register int n= *num;