End-to-end encryption (E2EE) is a method of securing data so that
only the intended participants—typically the sender and the
receiver—can read it. Here's how it works and why it protects your
data:
1. Encryption at the source
When you upload files, your browser encrypts it before the files are
transmitted. Encryption transforms the readable content (plaintext)
into scrambled data (ciphertext) using a cryptographic key that only
you possess and cannot be used for decryption.
2. Transmission over untrusted networks
The encrypted ciphertext travels across the internet. Because it's
already encrypted from your browser, anyone who intercepts the
traffic—whether a malicious hacker, an ISP, or a cloud
provider—cannot decipher the original content without the correct
decryption key.
3. Decryption only at the destination (Hyperscience)
When we receive the ciphertext, we use our own private key to
decrypt the data back into its original, readable form. No
intermediate server ever sees the plaintext as a result.
4. Key management stays out of the middle
In E2EE systems like this, the cryptographic keys are generated and
stored only on the end devices. The service that relays the data
never holds the keys, so it cannot decrypt or tamper with the
content. Even if the service were compromised, the attacker would
still lack the keys needed to read the data.
Bottom line
End-to-end encryption ensures that privacy is enforced by
cryptography, not by trust in intermediaries. As long as the
encryption algorithms are sound and the keys stay secret on the
endpoints, your data remains confidential, authentic, and resistant
to unauthorized access throughout its journey.
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