Purpose: Obtain a random string for cryptographic use.
random-crypto to <random string> \
[ length <string length> ]
random-crypto obtains a random string of length <string length>. This statement uses a cryptographically secure pseudo random generator (CSPRNG) from OpenSSL library. If "length" clause is omitted, the length is 20 by default.
The value generated is always binary and may contain null-characters and is null-terminated.
Use this statement only when needed for specific cryptographic uses. In all other cases, use random-string which is considerably faster.
