From: Niels Möller <nisse@lysator.liu.se>
Date: Sun, 6 Oct 2002 19:15:20 +0000 (+0200)
Subject: (base64_encode_group): New function, used by openpgp
X-Git-Tag: nettle_1.7_release_20030311~290
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cef4bd0423db2a407182d2f9e534ab77fb81e9b;p=thirdparty%2Fnettle.git

(base64_encode_group): New function, used by openpgp
armoring code.

Rev: src/nettle/base64.c:1.5
Rev: src/nettle/base64.h:1.7
---

diff --git a/base64.c b/base64.c
index 566cd30b..8de3b2e1 100644
--- a/base64.c
+++ b/base64.c
@@ -59,6 +59,15 @@ static const signed char decode_table[256] =
 
 #define ENCODE(x) (encode_table[0x3F & (x)])
 
+void
+base64_encode_group(uint8_t *dst, uint32_t group)
+{
+  *dst++ = ENCODE(group >> 18);
+  *dst++ = ENCODE(group >> 12);
+  *dst++ = ENCODE(group >> 6);
+  *dst++ = ENCODE(group);
+}
+
 unsigned 
 base64_encode(uint8_t *dst,
               unsigned src_length,
diff --git a/base64.h b/base64.h
index c91c5b33..b45f9654 100644
--- a/base64.h
+++ b/base64.h
@@ -46,6 +46,10 @@ base64_encode(uint8_t *dst,
         ((BASE64_BINARY_BLOCK_SIZE - 1 + (src_length))	\
 	/ BASE64_BINARY_BLOCK_SIZE * BASE64_TEXT_BLOCK_SIZE)
 
+/* Encode a single group */
+void
+base64_encode_group(uint8_t *dst, uint32_t group);
+
 /* FIXME: Perhaps rename to base64_decode_ctx? */
 struct base64_ctx /* Internal, do not modify */
 {