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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2015-03-11 17:53:04 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2015-03-12 07:58:24 +0100
commit27b2336029335ea3f02243ff170986cdab1f98ef (patch)
tree722083808d1ce9b3bb69d3cca3520ce61a09064d /include/digest.h
parent804fae5d16c8c48c6fca8d54f2878a2e382a0bc2 (diff)
downloadbarebox-27b2336029335ea3f02243ff170986cdab1f98ef.tar.gz
barebox-27b2336029335ea3f02243ff170986cdab1f98ef.tar.xz
digest: make it multi-instance
Now you need to call digest_alloc and when you finish to use it digest_free. We need this for upcomming aes encryption support and secure boot as we will need multiple instance of the same digest. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/digest.h')
-rw-r--r--include/digest.h28
1 files changed, 19 insertions, 9 deletions
diff --git a/include/digest.h b/include/digest.h
index 208a463793..2fd1135175 100644
--- a/include/digest.h
+++ b/include/digest.h
@@ -21,26 +21,36 @@
#include <linux/list.h>
-struct digest
-{
+struct digest;
+
+struct digest_algo {
char *name;
+ int (*alloc)(struct digest *d);
+ void (*free)(struct digest *d);
int (*init)(struct digest *d);
int (*update)(struct digest *d, const void *data, unsigned long len);
int (*final)(struct digest *d, unsigned char *md);
unsigned int length;
+ unsigned int ctx_length;
struct list_head list;
};
+struct digest {
+ struct digest_algo *algo;
+ void *ctx;
+};
+
/*
* digest functions
*/
-int digest_register(struct digest *d);
-void digest_unregister(struct digest *d);
+int digest_algo_register(struct digest_algo *d);
+void digest_algo_unregister(struct digest_algo *d);
-struct digest* digest_get_by_name(char* name);
+struct digest *digest_alloc(char* name);
+void digest_free(struct digest *d);
int digest_file_window(struct digest *d, char *filename,
unsigned char *hash,
@@ -52,23 +62,23 @@ int digest_file_by_name(char *algo, char *filename,
static inline int digest_init(struct digest *d)
{
- return d->init(d);
+ return d->algo->init(d);
}
static inline int digest_update(struct digest *d, const void *data,
unsigned long len)
{
- return d->update(d, data, len);
+ return d->algo->update(d, data, len);
}
static inline int digest_final(struct digest *d, unsigned char *md)
{
- return d->final(d, md);
+ return d->algo->final(d, md);
}
static inline int digest_length(struct digest *d)
{
- return d->length;
+ return d->algo->length;
}
#endif /* __SH_ST_DEVICES_H__ */