bcrypt Function

bcrypt computes a hash of the given string using the Blowfish cipher, returning a string in the Modular Crypt Format usually expected in the shadow password file on many Unix systems.

bcrypt(string, cost)

The cost argument is optional and will default to 10 if unspecified.

Since a bcrypt hash value includes a randomly selected salt, each call to this function will return a different value, even if the given string and cost are the same. Using this function directly with resource arguments will therefore cause spurious diffs. We recommend using this function only in provisioner or post-processor blocks, or in data resources whose results are only used in those blocks.

The version prefix on the generated string (e.g. $2a$) may change in future versions of Packer.

Examples

> bcrypt("hello world")
$2a$10$D5grTTzcsqyvAeIAnY/mYOIqliCoG7eAMX0/oFcuD.iErkksEbcAa