What is end-to-end encryption?

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About End-to-end encryption (E2EE)

Encryption is a way of protecting data from unauthorised access or tampering.
It works by transforming the data into a secret code that only the intended recipient can decipher. This comes in useful for various cases, such as securing online communications, storing sensitive information, and verifying digital identities.
There are two main types of encryption:
- Symmetric: It uses the same key to encrypt and decrypt the data. In symmetric encryption, the key used to encrypt some information is also the key required to decrypt it.
- Asymmetric: It uses a pair of keys: one public and one private. The public key can be shared with anyone, but the private key must be kept secret.
The term encryption is generally used when referring to the privacy of stored data, while end-to-end encryption protects data as it’s transferred between a location – which is crucial wherever there’s a rapid exchange of information.
In an E2EE-enabled app, only the person on each end – the sender and receiver – can read any exchanged messages.
This is because messages get encrypted on your device before being sent and only are decrypted when they reach your intended recipient.

Issues with End-to-end encryption

Some potent malware can also ‘snoop’ on your messages by infiltrating your device via other means – an SMS and reading them before they are encrypted.
The company that installs E2E encryption on its products can install a backdoor or an exception that allows the company to surmount the encryption and access the messages.

Q1) What is the Chameleon Trojan?

It is a malware that has the ability to disable biometric authentication methods, including fingerprint and face unlock, to sneakily access sensitive information.

Source: What is end-to-end encryption? How does it secure information?