X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fcrypto%2Fhkdf_sha256%2Fhkdf_sha256.c;h=f36bf67ade03c4a24219bc9ef55fdb49696318fe;hp=0f26485703270c87d51f60f0542e5472f405ac52;hb=d07f742c5925b97ed558eb07aae285616f5df823;hpb=2581e470853736444e23e8ccef97a0a38c6236d3;ds=inline

diff --git a/ccan/crypto/hkdf_sha256/hkdf_sha256.c b/ccan/crypto/hkdf_sha256/hkdf_sha256.c
index 0f264857..f36bf67a 100644
--- a/ccan/crypto/hkdf_sha256/hkdf_sha256.c
+++ b/ccan/crypto/hkdf_sha256/hkdf_sha256.c
@@ -4,7 +4,7 @@
 #include <assert.h>
 #include <string.h>
 
-void hkdf_sha256(unsigned char *okm, size_t okm_size,
+void hkdf_sha256(void *okm, size_t okm_size,
 		 const void *s, size_t ssize,
 		 const void *k, size_t ksize,
 		 const void *info, size_t isize)
@@ -83,7 +83,7 @@ void hkdf_sha256(unsigned char *okm, size_t okm_size,
 
 	while (okm_size > sizeof(t)) {
 		memcpy(okm, &t, sizeof(t));
-		okm += sizeof(t);
+		okm = (char *)okm + sizeof(t);
 		okm_size -= sizeof(t);
 
 		c++;