digest: introduce digest_{init/update/final/length}

This will allow to move from a one at a time digest to a multi-instance
with too much impact on the code using it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/digest.h b/include/digest.h
index 8563c10128..208a463793 100644
--- a/include/digest.h
+++ b/include/digest.h
@@ -50,4 +50,25 @@ int digest_file(struct digest *d, char *filename,
 int digest_file_by_name(char *algo, char *filename,
 		       unsigned char *hash);
 
+static inline int digest_init(struct digest *d)
+{
+	return d->init(d);
+}
+
+static inline int digest_update(struct digest *d, const void *data,
+				      unsigned long len)
+{
+	return d->update(d, data, len);
+}
+
+static inline int digest_final(struct digest *d, unsigned char *md)
+{
+	return d->final(d, md);
+}
+
+static inline int digest_length(struct digest *d)
+{
+	return d->length;
+}
+
 #endif /* __SH_ST_DEVICES_H__ */