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Posts Tagged ‘digital-signatures’

Fake security communications that appear to be from Microsoft

Tuesday, August 12, 2008 22:52

Microsoft sends e-mail messages to subscribers of our security communications when microsoft release information about a security software update or security incident. Unfortunately, malicious individuals can and have sent fake security communications that appear to be from Microsoft. This tactic is known as spoofing. Some of these messages lure recipients to ...

This was posted under category: Microsoft security  |  Read Full Story  |  0 Comments

Problems in public key encryption

Saturday, January 26, 2008 23:05

1.) Letting Space=00, A=01, B=02, ..., Z=26, encode the following message using the public key (42173,23). I DO NOT LIKE OVALTINE BUT I DO LIKE CAPTAIN MIDNIGHT To do the encoding, block the letters in groups of two. So, for example, DO = 0415. To test your solution, send your message ...

This was posted under category: Encryption  |  Read Full Story  |  0 Comments

Digital signatures

Friday, September 28, 2007 21:56

A digital signature is a block of data that was created using a secret key, and for which a public key can be used to verify that the signature was generated using the corresponding private key. The algorithm used to generate the signature must be such that ...

This was posted under category: Cryptography  |  Read Full Story  |  1 Comment