First commit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 14 insertions, 0 deletions

diff --git a/libblake_blake256_digest_get_required_input_size.c b/libblake_blake256_digest_get_required_input_size.c
new file mode 100644
index 0000000..f354c76
--- /dev/null
+++ b/libblake_blake256_digest_get_required_input_size.c
@@ -0,0 +1,14 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+size_t
+libblake_blake256_digest_get_required_input_size(size_t len, size_t bits, const char *suffix)
+{
+	bits += suffix ? strlen(suffix) : 0;
+	len += bits >> 3;
+	bits &= 7;
+	bits += (len & 63) << 3;
+	len &= ~(size_t)63;
+	len += (size_t)64 << (bits >= 512 - (1 + 2 * 32));
+	return len;
+}