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location Paris, France
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visits member for 3 years, 3 months
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I'm an engineer with experience in applied cryptography, in particular in Smart Card systems.


Jun
29
revised Given a message and signature, find a public key that makes the signature valid
We might try a better knapsack solution
Jun
29
revised Given a message and signature, find a public key that makes the signature valid
We might try a better knapsack solution
Jun
29
revised Given a message and signature, find a public key that makes the signature valid
Polish
Jun
29
answered Given a message and signature, find a public key that makes the signature valid
Jun
28
reviewed No Action Needed How to communicate by email with forward secrecy and deniability?
Jun
28
reviewed No Action Needed Signing an integer, which may be increased
Jun
28
comment Is Triple-DES a group?
Keith Campbell & Michael Wiener's paper proving that DES is not a group is (currently) available for free from the publisher, in a much better format than I once paid for.
Jun
28
comment Is Triple-DES a group?
I initialy wondered if "the subgroup generated by DES" is the subgroup of the group of (even) permutations generated by the set of (likely, $2^{56}$) permutations defined by DES encryption; or by the set of (likely, $2^{57}-4$) permutations defined by DES encryption and decryption. Now I realize these definitions are equivalent.
Jun
27
revised Offline app authentication - embedding hashed password inside an encrypted file
How to achieve integrity
Jun
27
revised Offline app authentication - embedding hashed password inside an encrypted file
Reference to common modes and password cracking
Jun
27
revised Offline app authentication - embedding hashed password inside an encrypted file
Reference to common modes
Jun
27
answered Offline app authentication - embedding hashed password inside an encrypted file
Jun
26
revised uniqueness of the RSA public modulus
Polish
Jun
25
revised uniqueness of the RSA public modulus
Typo; names are not unique ID
Jun
25
revised uniqueness of the RSA public modulus
Tone down critic on the question asked.
Jun
25
reviewed Excellent AES plaintext is smaller than 128 bits - how to expand?
Jun
25
reviewed Satisfactory Proper Way to Encrypt Data with Two Keys?
Jun
25
reviewed Satisfactory Is Base64(SHA1(GUID)) still unique like the original GUID?
Jun
25
reviewed Excellent How does OAEP improve the security of RSA?
Jun
25
reviewed Excellent Increased CRC collision probability when adding bits to input message