1 files changed, 9 insertions, 9 deletions

diff --git a/src/lib/libcrypto/idea/idea.h b/src/lib/libcrypto/idea/idea.h
index ae32f5692e..f14adf8398 100644
--- a/src/lib/libcrypto/idea/idea.h
+++ b/src/lib/libcrypto/idea/idea.h
@@ -59,10 +59,6 @@
 #ifndef HEADER_IDEA_H
 #define HEADER_IDEA_H
 
-#ifdef  __cplusplus
-extern "C" {
-#endif
-
 #ifdef NO_IDEA
 #error IDEA is disabled.
 #endif
@@ -74,22 +70,26 @@ extern "C" {
 #define IDEA_BLOCK      8
 #define IDEA_KEY_LENGTH 16
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 typedef struct idea_key_st
         {
         IDEA_INT data[9][6];
         } IDEA_KEY_SCHEDULE;
 
 const char *idea_options(void);
-void idea_ecb_encrypt(unsigned char *in, unsigned char *out,
+void idea_ecb_encrypt(const unsigned char *in, unsigned char *out,
         IDEA_KEY_SCHEDULE *ks);
-void idea_set_encrypt_key(unsigned char *key, IDEA_KEY_SCHEDULE *ks);
+void idea_set_encrypt_key(const unsigned char *key, IDEA_KEY_SCHEDULE *ks);
 void idea_set_decrypt_key(IDEA_KEY_SCHEDULE *ek, IDEA_KEY_SCHEDULE *dk);
-void idea_cbc_encrypt(unsigned char *in, unsigned char *out,
+void idea_cbc_encrypt(const unsigned char *in, unsigned char *out,
         long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv,int enc);
-void idea_cfb64_encrypt(unsigned char *in, unsigned char *out,
+void idea_cfb64_encrypt(const unsigned char *in, unsigned char *out,
         long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv,
         int *num,int enc);
-void idea_ofb64_encrypt(unsigned char *in, unsigned char *out,
+void idea_ofb64_encrypt(const unsigned char *in, unsigned char *out,
         long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv, int *num);
 void idea_encrypt(unsigned long *in, IDEA_KEY_SCHEDULE *ks);
 #ifdef  __cplusplus