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Nov
5
comment Can CBC ciphertext be decrypted if the key is known, but the IV not?
Welcome to Cryptography Stack Exchange. I changed the title and tags a bit, as your question (and the answer) actually applies to all block ciphers when used with CBC, not only AES.
Nov
5
revised Can CBC ciphertext be decrypted if the key is known, but the IV not?
better title, some rewording, add CBC-information, add tags.; edited tags; edited tags; edited tags
Nov
5
answered Can CBC ciphertext be decrypted if the key is known, but the IV not?
Nov
5
revised Why isn't the alternating step generator used more often?
remove reference to invention secrecy order - as it was published, it obviously was not secret anymore. Also, better title
Nov
5
answered Academic papers on ECDSA security
Nov
4
comment How does one measure the decrease in security, if any, of RC4 when mapping to a specific range of values?
The "security level" here mainly depends on the key size, which does not change by changing the output. (And you should also additionally apply a MAC, since the ciphertext is malleable - changing the ciphertext allows changing the corresponding plaintext in predictable ways.)
Nov
3
answered How does one measure the decrease in security, if any, of RC4 when mapping to a specific range of values?
Nov
3
comment How does one measure the decrease in security, if any, of RC4 when mapping to a specific range of values?
For what are you using these numbers?
Nov
3
revised Does RSA work for any message M?
edited tags
Nov
2
accepted Why do we need special key-wrap algorithms?
Nov
1
answered Is there a secret sharing scheme which allows sharing of a secret (one-out-of-n)
Nov
1
revised Is there any general description language for block ciphers?
formatting, page number
Nov
1
answered Is there any general description language for block ciphers?
Nov
1
comment Why do we need special key-wrap algorithms?
Your "needs to be at least quadratic" seems to be false - while it looks like this for the image above, there are other modes which only touch each block twice, like AKW1 and AKW2 from the X9.102 draft (as depicted in the appendix of the paper I linked).
Nov
1
comment Why do we need special key-wrap algorithms?
Ah, yes, I already read the paper (and it contains a better-quality diagram than the one in the draft recommendation, thus I used it). I actually mainly wanted to confirm my guess here ... and make it somehow more easily accessible, since this seems to be not really public knowledge. Thanks.
Nov
1
revised Is Blowfish strong enough for VPN encryption?
edited tags
Nov
1
revised How does a key wrapping like RFC 3394 secure my cryptographic keys?
add [encryption] tag
Nov
1
asked Why do we need special key-wrap algorithms?
Oct
31
comment How does a key wrapping like RFC 3394 secure my cryptographic keys?
I edited your question to remove the source code and instead add some formulas, as the actual code is not relevant for your question (and we want it here more on the theoretic level).
Oct
31
revised How does a key wrapping like RFC 3394 secure my cryptographic keys?
use formulas instead of source code, key-wrap tag, title