Some ciphers accept variable length keys and initialization vectors. By default,
the crypto.getCipherInfo() method will return the default values for these
ciphers. To test if a given key length or iv length is acceptable for given
cipher, use the keyLength and ivLength options. If the given values are
unacceptable, undefined will be returned.
Returns information about a given cipher.
Some ciphers accept variable length keys and initialization vectors. By default, the
crypto.getCipherInfo()method will return the default values for these ciphers. To test if a given key length or iv length is acceptable for given cipher, use thekeyLengthandivLengthoptions. If the given values are unacceptable,undefinedwill be returned.