1 files changed, 19 insertions, 0 deletions
diff --git a/libblake_blake2s_update.c b/libblake_blake2s_update.c
new file mode 100644
index 0000000..598260f
--- /dev/null
+++ b/libblake_blake2s_update.c
@@ -0,0 +1,19 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+size_t
+libblake_blake2s_update(struct libblake_blake2s_state *state, const void *data_, size_t len)
+{
+	const unsigned char *data = data_;
+	size_t off = 0;
+
+	for (; len - off > 64; off += 64) {
+		state->t[0] = (state->t[0] + 64) & UINT_LEAST32_C(0xFFFFffff);
+		if (state->t[0] < 64)
+			state->t[1] = (state->t[1] + 1) & UINT_LEAST32_C(0xFFFFffff);
+
+		libblake_internal_blake2s_compress(state, &data[off]);
+	}
+
+	return off;
+}