On Thu, Mar 17, 2011 at 11:52 PM, Leigh wrote:
>
> Cool. I was trying to play around with it, but did not get that far ;-)
>
>> So that is a hex representation of the 512 bit
>> RSA public key. Theoretically.
>
> Could you print the modulus and exponent parts of the public key separately?
> That is what is needed for cf/java.
>
> I am still trying to figure out how they arrived at that original string,
> which is supposedly base64 encoded. Maybe seeing the modulus and exponent
> parts will help.
I'm thinking you are right in guessing that the base64 routine isn't a
"normal" base64 routine.
The raw data seems to work:
var exponent =
createObject("java","java.math.BigInteger").init("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000C355",16);
var modulus =
createObject("java","java.math.BigInteger").init("00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000BFDF38C9703C07CB6877A41C4B05F5E03EAFC6579F2263CF686289C13B96CCFE9587F5C9FF2D8787A784D0DD8EE1B79CD96BB969611E0E42603EB6E4A23CBE3D",16);
var pubKeySpec = createObject("java",
"java.security.spec.RSAPublicKeySpec").init(modulus,exponent);
var factory =
createObject("java","java.security.KeyFactory").getInstance("RSA");
var keyInstance = factory.generatePublic(pubKeySpec);
But no matter how I played around with it, converting the original
"base64" encoded string didn't come anywhere near that--
OMG! I had a thought while typing this, and I think I had a
revelation. Remember how the docs mention things being a byte shorter
to "speed things up"? Yeah.
I just tried dumping the b64 stuff using sun.misc.BASE64Decoder, as a
bit of a sanity check, and I'll be damned if the string wasn't almost
what it should be. My nips got hard. By adding a 0, both CF and Sun
reported the same results!
Ex:
<cfdump var="#binaryEncode(binaryDecode('++11Ik','base64'),'base64')#"
label="orig">
string ++11Ig==
<cfdump var="#binaryEncode(binaryDecode('++11Ik0','base64'),'base64')#"
label="wazero">
string ++11Ik0=
Closer, neh?
I can freaking smell victory! I gotta switch gears, but I figured I'd
toss this out there, even though it pains me to be so close
(theoretically) and not to be able to say "SOLVED!".
If I was a selfish person, I'd wait till I figured it out myself, and
post the solution. I'm a team player though. The goal isn't personal
awesomeness, or whatever. Plus, I'm mad awesome already... ;)
:Den
--
Sin is geographical.
Bertrand Russel
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