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base64encode(str) encodes str as standard base64 and returns the encoded string.

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Signature

base64encode(str string) string

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Example

Encode credentials for an HTTP Basic Auth header before passing them to a command: 
variable "username" {
  description = "API username"
  type        = string
}

variable "password" {
  description = "API password"
  type        = string
}

computed "basic_auth" {
  description = "Base64-encoded Basic Auth credentials"
  expression  = base64encode("${var.username}:${var.password}")
}

task "publish-artifact" {
  description = "Upload a build artifact to the package registry"
  commands = [
    "curl -X PUT https://registry.example.com/api/artifact -H 'Authorization: Basic ${computed.basic_auth}' --data-binary @dist/app.tar.gz",
  ]
}

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Notes

  • The output uses standard base64 (with + and /). Some systems expect URL-safe base64 (with - and _). Use replace to convert the + and / characters if needed.
  • For the reverse operation, use base64decode.