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AESKey.decrypt only decrypts the first 16 bytes of a message correctly, and put the rest of the encrtyped message on the end. about as3crypto HOT 3 OPEN

GoogleCodeExporter avatar GoogleCodeExporter commented on May 27, 2024
AESKey.decrypt only decrypts the first 16 bytes of a message correctly, and put the rest of the encrtyped message on the end.

from as3crypto.

Comments (3)

GoogleCodeExporter avatar GoogleCodeExporter commented on May 27, 2024
I found out the exactly same thing today. Just the first block is correctly 
decrypted.

Original comment by [email protected] on 9 Nov 2010 at 9:53

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GoogleCodeExporter avatar GoogleCodeExporter commented on May 27, 2024
It seems you need to do a loop, such as below. Note, if the incomming data is 
not packed to exactly 16 bytes, you are in trouble.  

var blocks:uint = message.length / 16;
if (blocks == 0) blocks = 1; 
for (var block:uint=0; block < blocks; block++) {
    AES.decrypt(message, block*16);
}

Original comment by [email protected] on 9 Dec 2010 at 7:54

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GoogleCodeExporter avatar GoogleCodeExporter commented on May 27, 2024
The solution is to use the Crypto class, which sits above the AES class.  See 
issue 51 for a working example.

Original comment by [email protected] on 10 Dec 2010 at 11:58

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