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Jul
2
awarded  Curious
Nov
7
awarded  Yearling
Oct
26
comment Timing Attacks on ECDSA, ECDHE, AES and SHA2
Thank you for the detailed explanation.
Oct
26
accepted Timing Attacks on ECDSA, ECDHE, AES and SHA2
Oct
26
asked Timing Attacks on ECDSA, ECDHE, AES and SHA2
Sep
25
awarded  Notable Question
Jan
6
accepted Properties of Ideal Straight P-Boxes
Jan
4
asked Properties of Ideal Straight P-Boxes
Sep
5
awarded  Popular Question
Aug
3
awarded  Yearling
Jul
31
comment What would be the most effective way to brute force a 16 char AES key?
@Thomas The process could be sped up significantly by utilizing a GPU in combination with an AES-NI CPU.
Jul
19
comment How to hack the new save encryption on ipad for uplink?
Do you have the specifications for the REDSHIRT and REDSHIRT2 ciphers? A quick search led me to believe that one of the two is a simple XOR cipher, and I assume that so is the other.
Jul
19
comment How to hack the new save encryption on ipad for uplink?
I took a look at an iPad Uplink save file ([NAME].usr). Its contents do not look by any means encrypted. If you cannot parse the save file directly, you might want to convert it into a Mac/PC save file (by replacing SAV62 with REDSHRT2 and XORing every byte afterward with 0x80 - assuming I understood the format correctly).
Jul
18
awarded  Nice Question
Jun
16
comment HMAC vs MAC functions
The same as any other MAC algorithm. HMAC just has the added advantage that it doesn't require a MAC IV. Its typical uses are the same as any other MAC algorithm, ensuring the authenticity and integrity of a transmitted message for example.
Jun
16
comment HMAC vs MAC functions
HMAC is a MAC algorithm. The term MAC algorithm refers to any algorithm that authenticates a message. There are other MAC algorithms besides HMAC, such as VMAC.
Jun
16
comment Is it possible to use the RSA algorithm, or a variant, for software licensing?
@Maeher I think he means using the private key for encryption and the public key for decryption, which is possible and similar to signing.
Jun
10
comment Is HMAC-DRBG or Hash-DRBG stronger?
Thank you @Paulo Ebermann, I missed the appendices.
Jun
10
comment Is HMAC-DRBG or Hash-DRBG stronger?
Is there any information on the initial value of $V$?
Jun
9
comment Padding for the TEA
The terms "PKCS#5 padding" and "PKCS#7 padding" are used interchangeably, they essentially mean the same thing.