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Apr
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Nov
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comment Why there are limitations on using encryption with keys beyond certain length?
I am not saying, these are all standarized laws and regulations. And about "AES being reversible", well that depends on your definition of reversible, and yes, AES is reversible (that is, you can convert back to the original data using decryption), If you mean if it can be broken, then NO, we cannot, but I'm not sure about NSA.
Nov
28
comment Why there are limitations on using encryption with keys beyond certain length?
^Yes, For wireless crypto products, China seems to require use of a Chinese proprietary algorithm (WAPI), and AES and WEP must be disabled.
Nov
28
answered Why there are limitations on using encryption with keys beyond certain length?
Nov
24
accepted Where to store the file extension to retrieve it correctly after decryption
Nov
24
asked Where to store the file extension to retrieve it correctly after decryption
Oct
15
comment How to encrypt letters less than block n using Hill Cipher
try this, en.wikipedia.org/wiki/Padding_%28cryptography%29#PKCS7
Oct
6
accepted Does AES CTR mode store header information in encrypted files?
Oct
6
comment Does AES CTR mode store header information in encrypted files?
Is there any standard that programming languages built-in crypto libraries follows to store nonce and counter values? Like in PHP's mcrypt library or Python's PyCrypto ?.
Oct
6
asked Does AES CTR mode store header information in encrypted files?
Oct
6
accepted Since it gives negative power, how is rcon(0) calculated in AES?
Sep
5
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Jul
16
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Feb
7
awarded  Popular Question
Jan
14
accepted AES Algorithm processing time in Arduino vs Raspberry Pi