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

keys, so they're platform independent when transported.

tests/key-bobby-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: Bobby
           Mail: bobby@local
-        Key-ID: 0xCE20289DFB268A3D
-    Public-Key: 18a+&]*cfaPvpGAs*rp=oWkCXnLGe^aUx%^:BtLfv/MGe
- Creation Time: 2013-11-01T15:53:45
-      Checksum: D6:79:EB:3B:22:CE:77:99:62:58:9A:7D:C5:B7:62:1B
-                F1:2D:2D:FB:C3:D5:B1:9B:D3:B6:DA:9D:89:5B:14:07
- Serial Number: 0x6F6477D5
+        Key-ID: 0x9BBC8CFD7B519006
+    Public-Key: 1bWN>*CM00/#EgxhxEeJDuYRht*=}Zz5pR%XOsZHy5!kl
+ Creation Time: 2013-11-04T14:01:05
+      Checksum: AD:FD:96:AA:35:98:79:90:55:33:99:1F:6D:31:24:09
+                6E:E3:77:63:C9:29:DA:69:C1:8E:BE:5D:09:74:A8:13
+ Serial Number: 0xE11E885A
    Key Version: 0x00000001
  Random Art ID: +----------------+
-                |      .         |
-                |     o          |
-                |    o .         |
-                |   . = o        |
-                |  o . B .       |
-                |   o + . .      |
-                |    .   o       |
                 |                |
+                |                |
+                |     o          |
+                |    + . o       |
+                |   + o o..      |
+                |  o o.o.        |
+                |   o...         |
+                |   .o           |
                 +----------------+
 
-18a+&]*cfaPvpGAs*rp=oWkCXnLGe^aUx%^:BtLfv)U9yvTd$l]THd!tuMEjzY(YpATNQ[=
-+9O9^D(VP+S/a@hLz<>u{Y]esh$8duOcR0iu]e*D%*)/F/JBwGFEOY/Sy.dtBJ:a1C7003$
-APnZE=KcH[2z+=R]?R?[}M!t@g+p2.UI!HL$?7.5v.w>3}B>dB[l#p7e<7{<I=x8vBCX-+Z
-+^4{FLkgm=2C2XtC{&RQ$vTD*[GO5edJOJz==3oO+dHiI^tFHJF9th-!zV:rRoe7a]Bf2c4
-6?KlfIOU$[tib4@ae2gxwErN!nlyFyCjK#fq(nhLdXZnaBZPJH?2<3i.AGbhcn2^REv^wgp
-nf^T<vSbZ+C%Dg:v{%fN5jnkID*#%SsF3#*<Gl53B[s3T/u&/u1X+^Xf2H5x@j+Vr!1eAkO
-]*qlLlFNsx+ha/b9Nbn2T.A[{n!PClH%bE{Ou>i)Jl<){nb:RRPgWu/uw8l<tSqoh^L4s-D
-.s+A?7V*0%}2J[XV/XX[L5A8ydsrlSvei+eLs@Eo.#@wENxEYwb+FAAYJ7=ax}ZiXgn(Yy7
-VF7osPjBku4f+P[M^<9V5>a@FBi{i@3y8]O6/l:NF0P7nsx4xKueAjuVY1h5e*K+3RwcZdD
-Gviumba.%%uk*Ve3k39UMAPWa70-7xS7[SeaoyYtQmkuLLi5%w@lnyCUk@g[elv3v/qucW%
-009610m=p7zV.nxQrk[Mw!!mbV1F[Nd(efiPTr+pd=QNgCQ>-k?#=T)<X%@VePW62>XM7A[
-jSQW]2+-gx<+-p(4+#H8#]%s
+1bWN>*CM00/#EgxhxEeJDuYRht*=}Zz5pR%XOsZHyc(&FvTd%jsaN@2uJtG&D<AQunLUNFH
+r)p)F#/19.PZd5Q2=}7WZWMMVKA9Qo@?5kMbBl2iqOE)b(E0?[9}E)v%<VA7<fOTf$TtPS>
+(VK5-W.4E+qp]K}^A&2+kFOeIzgR+N}3::iP(c:bPgc6qHX@NK9IGb-RP(V1Z8h@LY%wuf=
+@mTe^x3*NHtkzn):5F6}9/)}D5iqn3%4TC343M&ov1qvIg7?Dzv?)wU^mJ&8bicJqul46Qd
+zFAPV9XB:bt4<F]sKYKyz[s9hxB{n7n151!Ixm1X9qRL$&3$v6aFL!NRf[w7@CM%DX?ft=d
+P9pSHvSbZ+C%Dg:v{%fNOI=0g:$]8eM:2KitQIeK9oMtHG3#V0+e:(L1OG1$U0(Iv5z5%:f
+!YOH9Q3t!7jSq9r0C1ToZuE*o@s{>VfZ7G!i%UYnq-/KKtKWuO%&(e4ZeMv^@sJ&yk2&U^I
+MgvKvjy?Zn%pAB3u?Ur(X=u[A(Y4g!-as+*@Lhwn%l^3KO@<tQq.gnBUaYABy8VAM{@3G:/
+[v}rAzXK(s*O=Wx6Yc..{(VX!7>H1K^O<e9?Yd[R?9wL^c(F)cPCTxjNYD!j0.}TETb)gH=
+$t-n)dlz&XSL18d09}B^(6^647WRq<HuAu-xny:N$lpa40lQ<E5lnZFTfFCx+2lj-708!3f
+KPkvY0Pt8Qs{7Coh76J4=x1szUjJ3@noLp5D#TxEAD+H%!Stur)mJuLA%51nrngw/HPYA[C
+}GyOb5G&#?Ov!{>-)uw(I{[+
 ------ END PCP PUBLICKEY ------