There are multiple ways of generating an encryption key. Most implementations rely on a random object. All examples mentioned here use a secure cryptographic randomizer.
- Mar 12, 2020 The madpwd3 utility is used to create the password. Generating AES keys and password Use the OpenSSL command-line tool, which is included with InfoSphere® MDM, to generate AES 128-, 192-, or 256-bit keys.
- Generate a random 128-bit key (k1), a random 128-bit IV, and a random salt (64 bits is probably sufficient). Use PBKDF2 to generate a 256-bit key from your password and the salt, then split that into two 128-bit keys (k2, k3). Make sure your algorithm's native output is at least 256 bits, or this will be slow. PBKDF2-SHA256 is a good choice. Don't use two seperate algorithms for this.
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Discusses symmetric encryption key generation techniques for block encryption algorithms such as AES, Blowfish, and Twofish, or for other algorithms such as ChaCha20.
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How To Generate Aes Key
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