Author Archives: unseen_rider

Discrete log problem – Presume adversary Eve has the public key, how can Eve generate all possible private keys?

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Presume adversary Eve has the public key, x_pub for the below encryption scheme;

g**x_priv mod p = h

Where

g is a generator, and is a positive integer
p is an unknown prime
x_priv is the unknown private key
g mod p is a … Continue reading Discrete log problem – Presume adversary Eve has the public key, how can Eve generate all possible private keys?→

PS3 Port 1900 open (via port scan), however UPnP service is set to disabled? [on hold]

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I posted a question linked below regarding PS3 and port 1900.

http://community.eu.playstation.com/t5/Gaming-Network/Port-1900-open-via-port-scan-however-UPnP-service-is-set-to/m-p/25211209

I have done a port scan of my … Continue reading PS3 Port 1900 open (via port scan), however UPnP service is set to disabled? [on hold]→

SSH – If Eve has the passphrase and public key, can she derive the private key?

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I have used ssh-keygen for creating an RSA 4096-bit SSH private and public key pair. I used a passphrase for the private key.

If an attacker, Eve, knows the passphrase in addition to the public key:

Can they derive the private key? – I … Continue reading SSH – If Eve has the passphrase and public key, can she derive the private key?→