From 90fe263124c38c31253f48d7187f51f9a10af3f7 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Thu, 21 Aug 2014 12:32:03 -0400
Subject: [PATCH] base32 encode

---
 base64.cpp | 30 ++++++++++++++++++++++++++++++
 base64.h   |  1 +
 2 files changed, 31 insertions(+)

diff --git a/base64.cpp b/base64.cpp
index e731bedc..62ef7892 100644
--- a/base64.cpp
+++ b/base64.cpp
@@ -232,5 +232,35 @@ namespace data
 		}
 		return ret;
 	}
+
+	size_t ByteStreamToBase32 (const uint8_t * inBuf, size_t len, char * outBuf, size_t outLen)
+	{
+		size_t ret = 0, pos = 1;
+		int bits = 8, tmp = inBuf[0];
+		while (ret < outLen && (bits > 0 || pos < len))
+		{ 	
+			if (bits < 5)
+			{
+				if (pos < len)
+				{
+					tmp <<= 8;
+		      		tmp |= inBuf[pos] & 0xFF;
+					pos++;
+		      		bits += 8;
+				}
+				else // last byte
+				{
+					tmp <<= (5 - bits);
+				  	bits = 5;
+				}
+			}	
+		
+			bits -= 5;
+			int ind = (tmp >> bits) & 0x1F;
+			outBuf[ret] = (ind < 26) ? (ind + 'a') : ((ind - 26) + '2');
+			ret++;
+		}
+		return ret;
+	}
 }
 }
diff --git a/base64.h b/base64.h
index 47a65def..c0ce1495 100644
--- a/base64.h
+++ b/base64.h
@@ -14,6 +14,7 @@ namespace data
 	const char * GetBase64SubstitutionTable ();	
 	
 	size_t Base32ToByteStream (const char * inBuf, size_t len, uint8_t * outBuf, size_t outLen);
+	size_t ByteStreamToBase32 (const uint8_t * InBuf, size_t len, char * outBuf, size_t outLen);
 }
 }