diff --git a/Makefile b/Makefile
index 1cb031a..f070b08 100644
--- a/Makefile
+++ b/Makefile
@@ -11,9 +11,10 @@ install : $(PROGRAMS)
 	cp $^ $(HOME)/bin/
 
 dlight : dlight.o buffer.o env.o http.o rss.o lockfile.o filter.o cconf.o \
-	proc-cache.o dlhist.o error.o
-dlight-compile : compile.o buffer.o env.o lockfile.o filter.o cconf.o error.o
-dlight-read-config : read-config.o buffer.o env.o cconf.o error.o
+	sha1_io.o proc-cache.o dlhist.o error.o
+dlight-compile : compile.o buffer.o env.o lockfile.o filter.o cconf.o \
+	sha1_io.o error.o
+dlight-read-config : read-config.o buffer.o env.o cconf.o sha1_io.o error.o
 dlight-filter-check: filter-check.o filter.o error.o
 
 dlight-% : %.o
diff --git a/cconf.c b/cconf.c
index 282c9b8..d16a9e4 100644
--- a/cconf.c
+++ b/cconf.c
@@ -25,25 +25,13 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#include <openssl/sha.h>
 #include <arpa/inet.h>
+#include "sha1_io.h"
 #include "cconf.h"
 
 /* we count NULL as part of the string ondisk */
 #define strsize(str) (strlen(str) + 1)
 
-static int sha1_write(SHA_CTX *ctx, int fd, void *buf, size_t size) {
-
-	SHA1_Update(ctx, buf, size);
-	return write(fd, buf, size);
-}
-
-static void write_int(SHA_CTX *ctx, int fd, int val) {
-
-	val = htonl(val);
-	sha1_write(ctx, fd, &val, sizeof val);
-}
-
 static void* read_entry_nr(void *buf, unsigned int *out) {
 
 	memcpy(out, buf, sizeof(*out));
@@ -217,7 +205,7 @@ int cconf_write(int fd, struct cconf *c) {
 	lseek(fd, sizeof(hdr), SEEK_SET);
 
 	/* put number of targets */
-	write_int(&ctx, fd, c->nr);
+	sha1_write_int(&ctx, fd, c->nr);
 
 	for(i = 0; i < c->nr; i++) {
 		int j;
@@ -229,7 +217,7 @@ int cconf_write(int fd, struct cconf *c) {
 		sha1_write(&ctx, fd, target->src, strsize(target->src));
 
 		/* write number of filters */
-		write_int(&ctx, fd, target->nr);
+		sha1_write_int(&ctx, fd, target->nr);
 
 		for(j=0; j < target->nr; j++) {
 			struct filter *f = &target->filter[j];