Cryptography My findings on extracting entropy from mouse movement events |
- My findings on extracting entropy from mouse movement events
- First year software student looking to get into cryptography
- Failed transactions with XMSS
- Is Forward Secrecy different from Perfect Forward Secrecy?
- Would a Winternitz one-time signature (WOTS) based public/private key be breakable after just 2 published signatures?
My findings on extracting entropy from mouse movement events Posted: 30 Jul 2018 01:33 PM PDT |
First year software student looking to get into cryptography Posted: 30 Jul 2018 11:10 AM PDT I finished my first year of software engineering and part way through the summer I started making an encryption program using C++. So far the program is able to read a file to be encrypted or decrypted using a simple encryption algorithm. There is a menu for the user to choose the working directory for the file read/write, enter the file name and whether to encrypt or decrypt. I had an intro to computer security class that I found very interesting but that class in particular did not involve much coding. I'm looking for some suggestions to improve my project or even ideas for a new one. [link] [comments] |
Posted: 30 Jul 2018 12:17 PM PDT Quite possibly a dumb question, but XMSS uses a One Time Signature (OTS) scheme that can only sign one message with one key. If the message fails to be delivered and you send it again. It automatically sends the original transaction unmodified am I right? It would be impossible that the second attempt to send the message would be signed with a second WOTSignature connected to the same private key? Making it less secure since it's based on WOTS and each WOTS publishes some part of the private key, they rapidly become less secure as more signatures created by the same public/private key are published. [link] [comments] |
Is Forward Secrecy different from Perfect Forward Secrecy? Posted: 30 Jul 2018 05:46 AM PDT Hello r/crypto!, I've been reading about Perfect Forward Secrecy and although I understand what it is, I am not sure if Forward Secrecy is the same or something else... Wikipedia says:
However, other sources, for example https://scotthelme.co.uk/perfect-forward-secrecy/ claims that those are not necessarily equivalent:
I like to use precise and correct terms so could you help me understand the differences? Appreciated if you can provide source or reference as well. [link] [comments] |
Posted: 30 Jul 2018 02:46 AM PDT "An important property of WOTS is that they are secure when only a single signature is published for a private/public key pair. Because each WOTS publishes some part of the private key, they rapidly become less secure as more signatures created by the same public/private key are published." I was wondering how rapidly that is. Would it be unsafe after 2 published signatures in the sense that it could be broken in a small timeframe? Or does this only becoe a problem when quantum computers become player in the game? [link] [comments] |
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