Remove one level of indirection

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>

Author: sjaeckel

src/ciphers/sm4.c

@@ -247,31 +247,13 @@ static void sm4_do(void *output, const void *input, const sm4_u32_t rk[32])
     STORE32H(Y[3], (sm4_u8_t *)output + 12);
 }
 
-/*
- * User interface
- */
-static void sm4_encrypt(const void *input, void *output,
-                        const sm4_u32_t key[32])
-{
-    sm4_do(output, input, key);
-}
-
-/*
- * User interface
- */
-static void sm4_decrypt(const void *input, void *output,
-                        const sm4_u32_t key[32])
-{
-    sm4_do(output, input, key);
-}
-
 int sm4_ecb_encrypt(const unsigned char *pt, unsigned char *ct,
                     const symmetric_key *skey)
 {
     LTC_ARGCHK(pt   != NULL);
     LTC_ARGCHK(ct   != NULL);
     LTC_ARGCHK(skey != NULL);
-    sm4_encrypt(pt, ct, skey->sm4.ek);
+    sm4_do(ct, pt, skey->sm4.ek);
     return CRYPT_OK;
 }
 int sm4_ecb_decrypt(const unsigned char *ct, unsigned char *pt,
@@ -280,7 +262,7 @@ int sm4_ecb_decrypt(const unsigned char *ct, unsigned char *pt,
     LTC_ARGCHK(pt   != NULL);
     LTC_ARGCHK(ct   != NULL);
     LTC_ARGCHK(skey != NULL);
-    sm4_decrypt(ct, pt, skey->sm4.dk);
+    sm4_do(pt, ct, skey->sm4.dk);
     return CRYPT_OK;
 }