Well, the correct code - that corresponds to current

encode - is below.  I even got the linefeed stuff wrong.

--
marko

diff --git a/contrib/pgcrypto/encode.c b/contrib/pgcrypto/encode.c
index ca15d1037d85fdb8576991447e1135beefdee17c..ac4a3d0f3e65c91b6fb53c0afbc8c0eea88c75f6 100644 (file)
--- a/contrib/pgcrypto/encode.c
+++ b/contrib/pgcrypto/encode.c
@@ -349,7 +349,8 @@ hex_dec_len(uint srclen)
 uint
 b64_enc_len(uint srclen)
 {
-       return srclen + (srclen + 2 / 3) + (srclen / (76 / 2)) + 2;
+       /* 3 bytes will be converted to 4, linefeed after 76 chars */
+       return (srclen + 2) * 4 / 3 + srclen / (76 * 3 / 4);
 }
 
 uint