fixed key export: now using big endian byte order for exported

keys, so they're platform independent when transported.

tests/key-alicia-pub

@@ -1,36 +1,36 @@
 ----- BEGIN PCP PUBLIC KEY -----
-  Generated by: Pretty Curved Privacy Version 0.0.1
+  Generated by: Pretty Curved Privacy Version 0.1.2
         Cipher: CURVE25519-ED25519-SALSA20-POLY1305
          Owner: Alicia
           Mail: alicia@local
-        Key-ID: 0x44713DD4E010C582
-    Public-Key: 0#17WjFuf7fj](Ij)l%NCBRo:TwopP(6qSXlEzxb0rr91
- Creation Time: 2013-11-01T15:52:56
-      Checksum: A0:AF:A6:F1:07:9F:90:EE:95:AF:D7:EE:44:7E:E8:A7
-                ED:C0:71:A4:B3:BF:CD:2B:9C:0E:EC:1D:63:0B:14:A5
- Serial Number: 0x2E2A200A
+        Key-ID: 0xC7062F147D8C4D91
+    Public-Key: 1njv6!EZrC2u6Ot@{G*xnXCgt9BpE4)Hf*Sq:):J761sm
+ Creation Time: 2013-11-04T14:00:55
+      Checksum: 23:A1:2C:A3:C6:55:80:84:72:15:3D:01:F7:97:04:C0
+                70:6B:96:66:53:49:33:0B:BF:63:AB:18:DF:C8:F6:F2
+ Serial Number: 0xD9C07D23
    Key Version: 0x00000001
  Random Art ID: +----------------+
-                |+.  .  .o       |
-                |oo o o o        |
-                |  o + . .       |
-                | . . .   .      |
-                |  .     o       |
-                |         .      |
-                |                |
-                |                |
+                |      o.        |
+                |     . ..       |
+                |      ..        |
+                |       oo       |
+                |      . +o      |
+                |     o o...     |
+                |    . . ...     |
+                |         o.     |
                 +----------------+
 
-0#17WjFuf7fj](Ij)l%NCBRo:TwopP(6qSXlEzxb0ypKov}/uK2Q6/xr-Mq6bH=dy8-biEa
-o$IOLG(OLj{dO?B}Vh)-e0X:73@MH9Z=i&FhqqkV{j>wxmJcC0*vL4O<Q+.q)ty:VOAGbyR
-/3CTX4w{:GavB1[71)Y+O]jo*Fl[k0wyG=rBrVbmSRO3cS/7ZgaC@I8z:iqmr!JQPm3!i#0
-46m2#Gp9537DU[]VwU2cj0FBbXSnsG(v0R>Mj3sOZNR^3k}OXM!N<]}+!SFY>qoT%H6{tZb
-WCdrzhvQK7Cc]Prn5yvZvyo*@3:xd-plZ92qy@XnqMuc#N7EdRWP30RnxhloN6ZMTNGKOaR
-ETo@7vqGT/x<<nyz!0i(05F-mcd)9K><iy/NSYGQ?-sv*4zeW%*<hX}ErwDIo+=6DyWlED0
-5<F%P*cZ0d^3{dA*&DBPG&/(:I3P!t{DA?5jZMIHUs9$+g$yx>]?.C}AEPsc+IVii?J?Tl3
-dZ/BB=?og/UGl-AaP(aSG0VxQ9SQMbbnWW1IMzrX<D9YMxa$@J!V)BS#DQU6PgEP!<<baUG
-7S+q0l2]Zq5t96oB2Gp3/Oli/&<+lBrd4K>{}<bJYekq/as^20FMPcYdrY0BgrvTaThiB$c
-HvxporF*#>>aRm^KrTa#B5oo2uW)@BgRl6kE<bjZgg=EcBl{@>2fFLmGh8)t>BX6q?qucW%
-00961016?#e^3NT/77sIVp)H[P%U=36VHc+)7i+Klv>OpXx.Cyv*-/qUB>>TOr/21J^s(4B
-H<GklM1BcPYtTx*%-jvuJp6a
+1njv6!EZrC2u6Ot@{G*xnXCgt9BpE4)Hf*Sq:):J7c#+Jv}/uK-PEqtw%{]wnFot4U^$)43
+%%unPk$cD]2!]VX/@>iQ{PK+4r^K%rytsMcASJr4^DG^s1tsmS5s!rQUW/iXK#ooAs$N>Ez
+7G@c@ZG?&0jJi0{g7qg1ATTs8>N>4w:n}o)edBd/pBVYmPjrwOiJrF6m=:YPzYK*@5y=AV9
+D]2dAdLBoE+/taf6*}O/9{Z^&Q+h?OfaVF25{^LG&<Zf1FQvYKtPS<9RHhrdm{Ij%&5jy2$
+>Sw^lKEliT{uT][/aC}A@O@(TIT%W8*3l6H{R3<9)[Qh9))#-O+C9@6Q^NfIsb0?2Mk)R/0
+3Yo7pvqGT/x<<nyz!0i(0nHL.Bq.USRQ)NZX0A0%MjjRNpE)>B:AF94rm5M1g4wuXI89gF@
+Xp#Je#A3$JglUr3Ayl}j$B=0yjuMSAGI1Gt1x:*S6V>Boy*pqQiqk1BPf+M4j)CQqRFthIh
++=nuI^C=+.98BdSz8W45d}/sXpf=AStp8ZS$P1ct$XD}3jd!oq8s+&$yY*V@.Jd*8/[>X!4
+]d]3]OIu6rz0L-6EO/nf%C]#!bMF)):yu{}>db{csH9h/IGyJ1DSn?tkPB:A>%5sBuVqw$9
+b&Lb(lmtSx6]ewYpK$WjDx[s9bsRW!f}Zk&4W[>sqh.WcBmLM.Ul]WK<l]=$4rSAa108!3f
+Hx4qO0OLnpblF2Z:#gV?CCcm.SM]WOirb4?Ojt!-6YuYp+EkjsSqLreIAF@U4-qXOa3ZRO}
+(3g:g!gRI0:{<?lqMu]j]+M.
 ------ END PCP PUBLICKEY ------