What is master encryption key?

What is the purpose of master key?

A master key is a cryptographic key (typically a symmetric key ( Symmetric Cryptosystem)) whose sole purpose is to protect other keys, such as session keys, while those keys are in storage, in use, or in transit.

What is master key in AES?

The AES master key always remains within the secure boundaries of the cryptographic coprocessors. Transport keys protect a key that is sent to another system, received from another system, or stored with data in a file. AES transport keys are variable-length keys up to 725 bytes in length.

What do encryption key mean?

In cryptography, an encryption key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.

What is Session Key and Master Key?

In cryptography, Master/Session is a key management scheme in which a pre-shared Key Encrypting Key (called the "Master" key) is used to encrypt a randomly generated and insecurely communicated Working Key (called the "Session" key). The Working Key is then used for encrypting the data to be exchanged.