From 6b7553e2f2e07f6c05f096458c87dbb85925ef01 Mon Sep 17 00:00:00 2001
From: Saleem Rashid <trezor@saleemrashid.com>
Date: Thu, 25 May 2017 20:21:53 +0100
Subject: [PATCH] base32: Add base32_encode_unsafe

---
 base32.c | 12 ++++++++++++
 base32.h |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/base32.c b/base32.c
index 7f834983d2..0f9f90f3c7 100644
--- a/base32.c
+++ b/base32.c
@@ -24,6 +24,18 @@
 
 static inline void base32_5to8(const uint8_t *in, uint8_t length, uint8_t *out);
 
+void base32_encode_unsafe(const uint8_t *in, size_t inlen, uint8_t *out) {
+	uint8_t remainder = inlen % 5;
+	size_t limit = inlen - remainder;
+
+	size_t i, j;
+	for (i = 0, j = 0; i < limit; i += 5, j += 8) {
+		base32_5to8(&in[i], 5, &out[j]);
+	}
+
+	if (remainder) base32_5to8(&in[i], remainder, &out[j]);
+}
+
 void base32_5to8(const uint8_t *in, uint8_t length, uint8_t *out) {
 	if (length >= 1) {
 		out[0]  = (in[0] >> 3);
diff --git a/base32.h b/base32.h
index 48c340c234..e0b49375cf 100644
--- a/base32.h
+++ b/base32.h
@@ -23,6 +23,9 @@
 #ifndef __BASE32_H__
 #define __BASE32_H__
 
+#include <stddef.h>
 #include <stdint.h>
 
+void base32_encode_unsafe(const uint8_t *in, size_t inlen, uint8_t *out);
+
 #endif