1,554 reputation
1617
bio website
location Madrid, Spain
age
visits member for 2 years, 1 month
seen 8 hours ago

Jan
21
comment HMAC-Ripemd-160 in TrueCrypt
Personally, in 2015, I wouldn't feel comfortable with anything less than 100'000 pbkdf2 iterations as a baseline, but a million would be preferable. Using something like Scrypt is better still. Of course, if you have a sufficiently strong password, then 3000 iterations of Ripemd-160 is fine.
Jan
7
comment NTRU key generation
@CodesInChaos - I'm not sure where that number comes from, but it's also mentioned in the documentation: github.com/NTRUOpenSourceProject/ntru-crypto/blob/master/…
Jan
5
comment NTRU key generation
+1 - thanks! I accepted the other answer because it also addressed the other doubt I had
Jan
5
comment NTRU key generation
Very succinct - thanks!
Jan
5
accepted NTRU key generation
Jan
5
comment NTRU key generation
1718 bytes. To illustrate further, here is a pastebin of sample public and private keys (obviously they're not production keys)
Jan
5
comment NTRU key generation
The string above is just to illustrate the repetition of zeros towards the end of a much larger (and seemingly pseudorandom) key. The key itself is 1718 bytes. As for the representation - I'm not sure how to answer. I'm just using the API - (ntru_crypto_ntru_encrypt_keygen) provided in the implementation, it returns the private key as a byte array (uint8_t).
Jan
5
comment NTRU key generation
it's hex (sorry, I neglected to mention that)
Jan
5
asked NTRU key generation
Dec
29
comment Do I have to transfer the private key to digitally sign a remote document?
DSC => Digital Signature Certificate (I suppose)
Dec
28
awarded  Civic Duty
Dec
23
awarded  Nice Question
Dec
21
accepted Post-quantum hybrid encryption
Dec
21
asked Post-quantum hybrid encryption
Dec
19
awarded  Yearling
Nov
27
comment How to establish if a string contains a message
see here for some relevant reading...
Nov
10
comment Extending key sizes in Salsa20 and ChaCha?
@John - "So.. if you can extend the key size, without impacting performance, why not do it?" Because you're not a trained cryptographer and you may well end up making the algorithm weaker, not stronger.
Nov
9
comment Extending key sizes in Salsa20 and ChaCha?
"Is there something I'm not seeing here" ? Yes... extending the key beyond 256 bits is entirely redundant.
Nov
4
comment The use of the term “sound” in cryptography
Context and/or reference, please.
Sep
14
comment Hashing passwords
The first option should absolutely not be used. As for the second, see PBKDF2