user2631433
Reputation: 23
AS3 Air App with HMACSHA512 Encryption
Hi I'm developing an Air App that requires authentication and signing of messages via a http api using the HMACSHA512 Encryption standard.
I've found an AS3 library which looks the goods at https://github.com/rubo/flame but its been prepared for flex and I've had a lot of trouble trying to get it to work under Air/Flash IDE and/or extracting the core functions I need.
It would be fantastic if someone could help me getting the flame library / swc loaded via the flash IDE with workine simple example code for encrypting the message 'hello' something like...
import flame.crypto.HMACSHA512;
var test:HMACSHA512 = new HMACSHA512(ByteArrayUtil.fromHexString('mySecretKey'));
trace('encrypted output = ' + test.encryptString('hello'));
Thanks in advance!
Upvotes: 2
Views: 519
Answers (2)
noopic
Reputation: 11
Optimized and improved code. I removed from it all does not apply to HMACSHA512
HMACSHA512.as
package com.cryptography
{
public class HMACSHA512
{
private static var SHA512Vector:Vector.<Int64> = getSHA512Vector();
private static function getSHA512Vector():Vector.<Int64>
{
var vector:Vector.<Int64> = new <Int64>[];
vector.push(new Int64(0x428a2f98, -685199838));
vector.push(new Int64(0x71374491, 0x23ef65cd));
vector.push(new Int64(-1245643825, -330482897));
vector.push(new Int64(-373957723, -2121671748));
vector.push(new Int64(0x3956c25b, -213338824));
vector.push(new Int64(0x59f111f1, -1241133031));
vector.push(new Int64(-1841331548, -1357295717));
vector.push(new Int64(-1424204075, -630357736));
vector.push(new Int64(-670586216, -1560083902));
vector.push(new Int64(0x12835b01, 0x45706fbe));
vector.push(new Int64(0x243185be, 0x4ee4b28c));
vector.push(new Int64(0x550c7dc3, -704662302));
vector.push(new Int64(0x72be5d74, -226784913));
vector.push(new Int64(-2132889090, 0x3b1696b1));
vector.push(new Int64(-1680079193, 0x25c71235));
vector.push(new Int64(-1046744716, -815192428));
vector.push(new Int64(-459576895, -1628353838));
vector.push(new Int64(-272742522, 0x384f25e3));
vector.push(new Int64(0xfc19dc6, -1953704523));
vector.push(new Int64(0x240ca1cc, 0x77ac9c65));
vector.push(new Int64(0x2de92c6f, 0x592b0275));
vector.push(new Int64(0x4a7484aa, 0x6ea6e483));
vector.push(new Int64(0x5cb0a9dc, -1119749164));
vector.push(new Int64(0x76f988da, -2096016459));
vector.push(new Int64(-1740746414, -295247957));
vector.push(new Int64(-1473132947, 0x2db43210));
vector.push(new Int64(-1341970488, -1728372417));
vector.push(new Int64(-1084653625, -1091629340));
vector.push(new Int64(-958395405, 0x3da88fc2));
vector.push(new Int64(-710438585, -1828018395));
vector.push(new Int64(0x6ca6351, -536640913));
vector.push(new Int64(0x14292967, 0xa0e6e70));
vector.push(new Int64(0x27b70a85, 0x46d22ffc));
vector.push(new Int64(0x2e1b2138, 0x5c26c926));
vector.push(new Int64(0x4d2c6dfc, 0x5ac42aed));
vector.push(new Int64(0x53380d13, -1651133473));
vector.push(new Int64(0x650a7354, -1951439906));
vector.push(new Int64(0x766a0abb, 0x3c77b2a8));
vector.push(new Int64(-2117940946, 0x47edaee6));
vector.push(new Int64(-1838011259, 0x1482353b));
vector.push(new Int64(-1564481375, 0x4cf10364));
vector.push(new Int64(-1474664885, -1136513023));
vector.push(new Int64(-1035236496, -789014639));
vector.push(new Int64(-949202525, 0x654be30));
vector.push(new Int64(-778901479, -688958952));
vector.push(new Int64(-694614492, 0x5565a910));
vector.push(new Int64(-200395387, 0x5771202a));
vector.push(new Int64(0x106aa070, 0x32bbd1b8));
vector.push(new Int64(0x19a4c116, -1194143544));
vector.push(new Int64(0x1e376c08, 0x5141ab53));
vector.push(new Int64(0x2748774c, -544281703));
vector.push(new Int64(0x34b0bcb5, -509917016));
vector.push(new Int64(0x391c0cb3, -976659869));
vector.push(new Int64(0x4ed8aa4a, -482243893));
vector.push(new Int64(0x5b9cca4f, 0x7763e373));
vector.push(new Int64(0x682e6ff3, -692930397));
vector.push(new Int64(0x748f82ee, 0x5defb2fc));
vector.push(new Int64(0x78a5636f, 0x43172f60));
vector.push(new Int64(-2067236844, -1578062990));
vector.push(new Int64(-1933114872, 0x1a6439ec));
vector.push(new Int64(-1866530822, 0x23631e28));
vector.push(new Int64(-1538233109, -561857047));
vector.push(new Int64(-1090935817, -1295615723));
vector.push(new Int64(-965641998, -479046869));
vector.push(new Int64(-903397682, -366583396));
vector.push(new Int64(-779700025, 0x21c0c207));
vector.push(new Int64(-354779690, -840897762));
vector.push(new Int64(-176337025, -294727304));
vector.push(new Int64(0x6f067aa, 0x72176fba));
vector.push(new Int64(0xa637dc5, -1563912026));
vector.push(new Int64(0x113f9804, -1090974290));
vector.push(new Int64(0x1b710b35, 0x131c471b));
vector.push(new Int64(0x28db77f5, 0x23047d84));
vector.push(new Int64(0x32caab7b, 0x40c72493));
vector.push(new Int64(0x3c9ebe0a, 0x15c9bebc));
vector.push(new Int64(0x431d67c4, -1676669620));
vector.push(new Int64(0x4cc5d4be, -885112138));
vector.push(new Int64(0x597f299c, -60457430));
vector.push(new Int64(0x5fcb6fab, 0x3ad6faec));
vector.push(new Int64(0x6c44198c, 0x4a475817));
return vector;
}
private static function getHVector():Vector.<Int64>
{
var vector:Vector.<Int64> = new <Int64>[];
vector.push(new Int64(0x6a09e667, -205731576));
vector.push(new Int64(-1150833019, -2067093701));
vector.push(new Int64(0x3c6ef372, -23791573));
vector.push(new Int64(-1521486534, 0x5f1d36f1));
vector.push(new Int64(0x510e527f, -1377402159));
vector.push(new Int64(-1694144372, 0x2b3e6c1f));
vector.push(new Int64(0x1f83d9ab, -79577749));
vector.push(new Int64(0x5be0cd19, 0x137e2179));
return vector;
}
public static function calculateHash(key:String, data:String):String
{
var bkey:Array = rstr2binb(key);
if (bkey.length > 32) bkey = binb_sha512(bkey, key.length * 8);
var ipad:Array = new Array(32);
var opad:Array = new Array(32);
for (var i:int = 0; i < 32; i++)
{
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash:Array = binb_sha512(ipad.concat(rstr2binb(data)), 1024 + data.length * 8);
return binb2hex(binb_sha512(opad.concat(hash), 1024 + 512));
}
private static function binb2hex(input:Array):String
{
var hex_tab:String = "0123456789abcdef";
var output:String = "";
for (var i:int = 0; i < input.length * 32; i += 8)
{
var schar:int = (input[i >> 5] >>> (24 - i % 32)) & 0xFF;
output += hex_tab.charAt((schar >>> 4) & 0x0F) + hex_tab.charAt(schar & 0x0F);
}
return output;
}
private static function rstr2binb(string:String):Array
{
var stringLength:int = string.length;
var vectorLength:int = string.length >> 2;
var result:Array = new Array(vectorLength);
var i:int;
for (i = 0; i < vectorLength; i++)
result[i] = 0;
for (i = 0; i < stringLength * 8; i += 8)
result[i >> 5] |= (string.charCodeAt(i / 8) & 0xFF) << (24 - i % 32);
return result;
}
private static function binb_sha512(x:Array, len:int):Array
{
var H:Vector.<Int64> = getHVector();
var T1:Int64 = new Int64(0, 0);
var T2:Int64 = new Int64(0, 0);
var a:Int64 = new Int64(0,0);
var b:Int64 = new Int64(0,0);
var c:Int64 = new Int64(0,0);
var d:Int64 = new Int64(0,0);
var e:Int64 = new Int64(0,0);
var f:Int64 = new Int64(0,0);
var g:Int64 = new Int64(0,0);
var h:Int64 = new Int64(0,0);
var s0:Int64 = new Int64(0, 0);
var s1:Int64 = new Int64(0, 0);
var Ch:Int64 = new Int64(0, 0);
var Maj:Int64 = new Int64(0, 0);
var r1:Int64 = new Int64(0, 0);
var r2:Int64 = new Int64(0, 0);
var r3:Int64 = new Int64(0, 0);
var j:int;
var W:Vector.<Int64> = new Vector.<Int64>(80, true);
for(var i:int = 0; i < 80; i++)
W[i] = new Int64(0, 0);
x[len >> 5] |= 0x80 << (24 - (len & 0x1f));
x[((len + 128 >> 10)<< 5) + 31] = len;
for (i = 0; i < x.length; i += 32)
{
a.copy(H[0]);
b.copy(H[1]);
c.copy(H[2]);
d.copy(H[3]);
e.copy(H[4]);
f.copy(H[5]);
g.copy(H[6]);
h.copy(H[7]);
for (j = 0; j < 16; j++)
{
W[j].h = x[i + 2 * j];
W[j].l = x[i + 2 * j + 1];
}
for (j = 16; j < 80; j++)
{
r1.rrot(W[j - 2], 19);
r2.revrrot(W[j - 2], 29);
r3.shr(W[j - 2], 6);
s1.l = r1.l ^ r2.l ^ r3.l;
s1.h = r1.h ^ r2.h ^ r3.h;
r1.rrot(W[j - 15], 1);
r2.rrot(W[j - 15], 8);
r3.shr(W[j - 15], 7);
s0.l = r1.l ^ r2.l ^ r3.l;
s0.h = r1.h ^ r2.h ^ r3.h;
W[j].add4(s1, W[j - 7], s0, W[j - 16]);
}
for (j = 0; j < 80; j++)
{
Ch.l = (e.l & f.l) ^ (~e.l & g.l);
Ch.h = (e.h & f.h) ^ (~e.h & g.h);
r1.rrot(e, 14);
r2.rrot(e, 18);
r3.revrrot(e, 9);
s1.l = r1.l ^ r2.l ^ r3.l;
s1.h = r1.h ^ r2.h ^ r3.h;
r1.rrot(a, 28);
r2.revrrot(a, 2);
r3.revrrot(a, 7);
s0.l = r1.l ^ r2.l ^ r3.l;
s0.h = r1.h ^ r2.h ^ r3.h;
Maj.l = (a.l & b.l) ^ (a.l & c.l) ^ (b.l & c.l);
Maj.h = (a.h & b.h) ^ (a.h & c.h) ^ (b.h & c.h);
T1.add5(h, s1, Ch, SHA512Vector[j], W[j]);
T2.add(s0, Maj);
h.copy(g);
g.copy(f);
f.copy(e);
e.add(d, T1);
d.copy(c);
c.copy(b);
b.copy(a);
a.add(T1, T2);
}
H[0].add(H[0], a);
H[1].add(H[1], b);
H[2].add(H[2], c);
H[3].add(H[3], d);
H[4].add(H[4], e);
H[5].add(H[5], f);
H[6].add(H[6], g);
H[7].add(H[7], h);
}
var hash:Array = new Array(16);
for (i = 0; i < 8; i++)
{
hash[2 * i] = H[i].h;
hash[2 * i + 1] = H[i].l;
}
return hash;
}
}
}
Int64.as
package com.cryptography
{
public class Int64
{
public var h:int;
public var l:int;
public function Int64(h:int, l:int):void
{
this.h = h;
this.l = l;
}
public function copy(src:Int64):void
{
this.h = src.h;
this.l = src.l;
}
public function rrot(x:Int64, shift:int):void
{
this.l = (x.l >>> shift) | (x.h << (32 - shift));
this.h = (x.h >>> shift) | (x.l << (32 - shift));
}
public function revrrot(x:Int64, shift:int):void
{
this.l = (x.h >>> shift) | (x.l << (32 - shift));
this.h = (x.l >>> shift) | (x.h << (32 - shift));
}
public function shr(x:Int64, shift:int):void
{
this.l = (x.l >>> shift) | (x.h << (32 - shift));
this.h = (x.h >>> shift);
}
public function add(x:Int64, y:Int64):void
{
var w0:uint = (x.l & 0xffff) + (y.l & 0xffff);
var w1:uint = (x.l >>> 16) + (y.l >>> 16) + (w0 >>> 16);
var w2:uint = (x.h & 0xffff) + (y.h & 0xffff) + (w1 >>> 16);
var w3:uint = (x.h >>> 16) + (y.h >>> 16) + (w2 >>> 16);
this.l = (w0 & 0xffff) | (w1 << 16);
this.h = (w2 & 0xffff) | (w3 << 16);
}
public function add4(a:Int64, b:Int64, c:Int64, d:Int64):void
{
var w0:uint = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff);
var w1:uint = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (w0 >>> 16);
var w2:uint = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (w1 >>> 16);
var w3:uint = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (w2 >>> 16);
this.l = (w0 & 0xffff) | (w1 << 16);
this.h = (w2 & 0xffff) | (w3 << 16);
}
public function add5(a:Int64, b:Int64, c:Int64, d:Int64, e:Int64):void
{
var w0:uint = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff) + (e.l & 0xffff);
var w1:uint = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (e.l >>> 16) + (w0 >>> 16);
var w2:uint = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (e.h & 0xffff) + (w1 >>> 16);
var w3:uint = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (e.h >>> 16) + (w2 >>> 16);
this.l = (w0 & 0xffff) | (w1 << 16);
this.h = (w2 & 0xffff) | (w3 << 16);
}
}
}
Upvotes: 1
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