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by mSparks
4192 days ago
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the way it works is quite straight forward.
the rsa key is the product of 4 primes rather than two. two of which are known to the nsa.
this shortens then rsa key length to 128 bits which is factored using a sieve on their hpc platform in a fraction of a second. this gives them the key used for the encryption and allows them to decrypt the messages. but still makes it hard for everyone else to decrypt (since they don't know the nsa primes). no I'm not going to share the keys they use. |
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