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Encryption is the process of transforming plaintext using a cipher to make it unreadable to anyone except those possessing the key.

1 vote

If whatsapp has end-to-end encryption, How does it fight spam?

If you define "spam" as exactly the same message sent to many users, this could be detected as supplementing each sent message with its hash (this will also help with integrity checks). The server the …
George Y.'s user avatar
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2 votes

How to externally backup a fully encrypted disk partition

Another alternative is to use EncFS to encrypt your files on NAS. The way EncFS works is on a file level, it stores each file encrypted on your hard drive, and decrypts it on-the-fly when accessed via …
George Y.'s user avatar
  • 3,544
100 votes
Accepted

Why is so much ransomware breakable?

Disclosure: I work for one of vendors participating in NoMoreRansom. Most modern ransomware indeed implements proper cryptography. Earlier versions were using rand() for key generation, seeding the r …
George Y.'s user avatar
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1 vote

Secure application data

And since your Encryp/Decryp method is private and derived, it may weaken the encryption if not implemented correctly. … This seem to be a classic case for a symmetric key encryption; just generate a 128/256 bit master AES key, and embed it in both binaries. …
George Y.'s user avatar
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1 vote

Tor Hidden Service In-Depth Questions

To add to the answer above: If b. is true, then the client and hidden service hoster don't communicate outside of the rendezvous point, becuase it's unsafe... So how do they find out which ren …
George Y.'s user avatar
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2 votes
Accepted

Few Questions About Tor Hidden Services

On torproject.org it is explained that there are 3 layers of encryption when connecting to clearnet, and when each is decrypted, it only shows the address of the next node, everyhting else is encrypted … As far as I know (but not 100% sure), the end-to-end encryption after rendezvous is the same as with Tor circuit (i.e. Tor talking to the exit node). See above regarding anonymous. …
George Y.'s user avatar
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