H256.rb

One-way SHA256 function with salt.

gem install h256

H256 reads its configuration from the ~/.h256 file at initialization. This file, which should be readable by its owner only, have the salt value.

Generate a digest from the system:

echo "my-secret" > ~/.h256

h256 p@ssw0rd

f8ab042dd6f0ee03347b6950b270ac91fd5a95b117825f4cb5782b9af62421a3

h256 シークレット

35a36f9c6246596cf353d0e545244a650404475ffdfe589b5ebae084c80159b5

Same operations, with Ruby:

require "h256"

builder = H256::Builder.new("my-secret")

builder.call("p@ssw0rd") # => "f8ab042dd6f0ee03347b6950b270ac91fd5a95b117825f4cb5782b9af62421a3"
builder.call("シークレット") # => "35a36f9c6246596cf353d0e545244a650404475ffdfe589b5ebae084c80159b5"