1 files changed, 20 insertions, 0 deletions
diff --git a/lib/crypto/c_src/digest.h b/lib/crypto/c_src/digest.h
new file mode 100644
index 0000000000..bd17f58bbf
--- /dev/null
+++ b/lib/crypto/c_src/digest.h
@@ -0,0 +1,20 @@
+#ifndef E_DIGEST_H__
+#define E_DIGEST_H__ 1
+
+#include "common.h"
+
+struct digest_type_t {
+    union {
+	const char*  str;        /* before init, NULL for end-of-table */
+	ERL_NIF_TERM atom;       /* after init, 'false' for end-of-table */
+    }type;
+    union {
+	const EVP_MD* (*funcp)(void);  /* before init, NULL if notsup */
+	const EVP_MD* p;               /* after init, NULL if notsup */
+    }md;
+};
+
+void init_digest_types(ErlNifEnv* env);
+struct digest_type_t* get_digest_type(ERL_NIF_TERM type);
+
+#endif /* E_DIGEST_H__ */