-void RC5_32_cbc_encrypt(unsigned char *in, unsigned char *out, long length,
- RC5_32_KEY *ks, unsigned char *iv, int enc);
-void RC5_32_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
- RC5_32_KEY *schedule, unsigned char *ivec, int *num, int enc);
-void RC5_32_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
- RC5_32_KEY *schedule, unsigned char *ivec, int *num);
+void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out,
+ long length, RC5_32_KEY *ks, unsigned char *iv,
+ int enc);
+void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, RC5_32_KEY *schedule,
+ unsigned char *ivec, int *num, int enc);
+void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, RC5_32_KEY *schedule,
+ unsigned char *ivec, int *num);