Implement SHA-1

1 files changed, 21 insertions, 0 deletions

diff --git a/c/sha1/sha1.h b/c/sha1/sha1.h
new file mode 100644
index 0000000..a01d116
--- /dev/null
+++ b/c/sha1/sha1.h
@@ -0,0 +1,21 @@
+#ifndef SHA1_SHA1_H
+#define SHA1_SHA1_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define SHA1DGSTSZ 20
+#define SHA1BLKSZ  64
+
+typedef struct {
+	uint32_t dgst[5];
+	uint64_t msgsz;
+	uint8_t buf[64];
+	size_t bufsz;
+} sha1_t;
+
+void sha1init(sha1_t *);
+int sha1hash(sha1_t *, const uint8_t *, size_t);
+void sha1end(sha1_t *, uint8_t[SHA1DGSTSZ]);
+
+#endif /* !SHA1_SHA1_H */