First commit

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

1 files changed, 16 insertions, 0 deletions

diff --git a/libblake_encode_hex.c b/libblake_encode_hex.c
new file mode 100644
index 0000000..2f57acb
--- /dev/null
+++ b/libblake_encode_hex.c
@@ -0,0 +1,16 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+void
+libblake_encode_hex(const void *data_, size_t n, char out[/* static n * 2 + 1 */], int uppercase)
+{
+	const char *digits = uppercase ? "0123456789ABCDEF" : "0123456789abcdef";
+	const unsigned char *data = data_;
+	size_t i, j;
+
+	for (j = 0, i = 0; i < n; i += 1) {
+		out[j++] = digits[(data[i] >> 4) & 15];
+		out[j++] = digits[(data[i] >> 0) & 15];
+	}
+	out[n * 2] = '\0';
+}