PKI.genpass {PKI}

Generate cryptographically strong pseudo-random password.

Description

PKI.genpass generates n cryptographically strong pseudo-random password by using a given set of allowed characters.

Usage

PKI.genpass(n=15, set=c(alphanum, ".", "/"), block=5, sep="-")

Arguments

n

positive integer, number of random elements in the password

set

character vector, set of characters to use in the password, ideally its length should be a power of 2 and must be at most 256. Internal variable alphanum is equivalent to c(LETTERS, letters, 0:9).

block

non-negative integer, number of character blocks in the password or 0 if no separated blocks are desired.

sep

string, separator between blocks (only used if 0 < blocks < n).

Details

PKI.genpass generates a password based on a set of allowable characters by subsetting the set with bytes generated using PKI.random.

If block is >0 and <n then blocks of block characters are separated by the separator string sep. This is typically used to guarantee at least one special character in the password. The default results in a 90-bit random password of the form XXXXX-XXXXX-XXXXX.

Value

String, generated password.

Note

This is just a utility front-end to PKI.random(n) to subset set modulo its length. If the set does not have a length which is a power of 2 then a warning is issued and the leading elements are more likely to be used, reducing the password strength.

Author(s)

Simon Urbanek

Examples

  PKI.genpass()