How Does a Nebulizer Work? A nebulizer is an electric or battery-powered machine. It usually has four parts: the motor; the mouthpiece or facemask; the cup; tubing; Medicine is put into the cup, which is attached to the motor via tubing. The mouthpiece or facemask is then attached to the cup. When the machine is turned on, it sends a mist into the mask.
Email encryption can rely on public-key cryptography, in which users can each publish a public key that others can use to encrypt messages to them, while keeping secret a private key they can use to decrypt such messages or to digitally encrypt and sign messages they send.mail encryption is encryption of email messages to protect the content from being read by other entities than the intended recipients. Email encryption may also include authentication. Email is prone to disclosure of information.
In symmetric systems the same key (the secret key) is used to encrypt and decrypt a message. Data manipulation in symmetric systems is faster than asymmetric systems as they generally use shorter key lengths. Asymmetric systems use public key to encrypt a message and a private key to decrypt it.Use of asymmetric systems enhances the security of communication. In colloquial use, the term  code  is often used to mean any method of encryption or concealment of meaning.ymmetric-key cryptography, where a single key is used for encryption and decryption. Symmetric-key cryptography refers to encryption methods in which both the sender and receiver share the same key (or, less commonly, in which their keys are different, but related in an easily computable way).