-const char *mode_cbc_encrypt(Byte *data, int blocks,
- const Byte *iv, Byte *chain,
- const BlockCipherAlgInfo *alg, int encr,
- int blocksize, const void *sch) {
+static const char *mode_cbc_encrypt(Byte *data, int blocks,
+ const Byte *iv, Byte *chain,
+ const BlockCipherAlgInfo *alg, int encr,
+ int blocksize, const void *sch) {