1 files changed, 16 insertions, 0 deletions
diff --git a/util/sbase/sha224.h b/util/sbase/sha224.h
new file mode 100644
index 00000000..d7f40532
--- /dev/null
+++ b/util/sbase/sha224.h
@@ -0,0 +1,16 @@
+/* public domain sha224 implementation based on fips180-3 */
+
+#include "sha256.h"
+
+#define sha224  sha256  /*struct*/
+
+enum { SHA224_DIGEST_LENGTH = 28 };
+
+/* reset state */
+void sha224_init(void *ctx);
+/* process message */
+#define sha224_update  sha256_update
+/* get message digest */
+/* state is ruined after sum, keep a copy if multiple sum is needed */
+/* part of the message might be left in s, zero it if secrecy is needed */
+void sha224_sum(void *ctx, uint8_t md[SHA224_DIGEST_LENGTH]);