Lavos / passwd-mask

A CLI password generator that uses masks so you can match X provider's specific requirements.

A small password generator that uses masks. It's just using crypto/rand internally, so I should be pretty random. I wouldn't protect government secrets with this at any rate.

Building

go get github.com/Lavos/passwd-mask
cd $GOPATH/src/github.com/Lavos/passwd-mask/commands
go build .

Usage

passwd-mask mask [-n]

mask

The mask value is a string with placeholder characters that represent a larger set of characters. Each instance is replaced with a random character from the chosen set.

The characters for each set are:

• a: alpha, lowercase
• A: alpha, uppercase
• #: numbers
• n: alpha-numeric, lowercase
• N: alpha-numeric, uppercase
• M: alpha-numeric, mixed-case
• h: hex, lowercase
• H: hex, uppercase
• b: base64

Characters not in this set are copied to the generated password untouched.

{integer} can be used to repeat previous character integer times. For example, "h{5}" expands to "hhhhh". [characters]{integer} defines a custom set of characters to be used integer times, i.e. [abc]{5} becomes cbaba"

Passing - as the mask value makes the program read from STDIN.

Examples

passwd-mask "aaa_AAA_###"
returns: ozj_DNQ_646

3x lowercase alpha _ 3x uppercase alpha _ 3x numbers

passwd-mask "bbbbb-#####"
returns: +KKRK-67255

5x base64 - 5x numbers

passwd-mask "b{20}"
returns: We//QplIEu50bsilLkLR9whwy

20 characters of base64.

passwd-mask "[.-]{5}"
returns: .--.-

5 characters from custom set of .-

-n

if you using this command for scripting, you can suppress printing the newline at the end of the output by passing the -n flag.