Quote from: otila on October 07, 2014, 09:41:32 PM

Quote from: jl777 on October 07, 2014, 09:12:49 PM

it uses the ascii char val to choose the cipher to use. so if you have a 4 char pin code, this will map to using 4 of the ciphers. I apply it iteratively to the output of the previous cipher.

not sure how even 18 times becomes over 100 times slower, maybe AES is 10 times faster? if you like AES just use a one char pin code that maps to AES. it is up to the user. anyway the code is already done and it didnt bloat things that much.

gnutls-cli --benchmark-ciphers says
3DES-CBC 21.39 MB/sec, AES-128-GCM 1.39 GB/sec

I still have absolutely no idea why someone would want to do it like you are doing.
Maybe you also want to use a key derivation function (KDF), scrypt or better? https://password-hashing.net/
Or was that your code already Final Release? Bummer. Cry

i am just offering a choice
i notice that people tend to feel quite strongly about which cipher is better and i prefer to avoid getting involved in such debates
my method allows people to choose their cipher (or cipher sequence)
the code is still not debugged yet, I just wrote the MofNfs calls yesterday, really as a good way to test the DHT calls I coded over the weekend.

is there a C library for the key derivation?