;;;; sha1-primitive.scm  -*- Scheme -*-
;;;; Kon Lovett, Jul '18

(module sha1-primitive

(;export
  sha1-primitive)

(import scheme
  (chicken base)
  (chicken type)
  message-digest-primitive
  sha1-api)

(include-relative "message-digest-primitive.types")

(: sha1-primitive (-> message-digest-primitive))

(define sha1-primitive
  (let ((the-sha1-primitive (the (or false message-digest-primitive) #f)))
    (lambda ()
      (unless the-sha1-primitive
        (set! the-sha1-primitive (make-message-digest-primitive
          context-size digest-length init update final
          #:block-length block-length #:raw-update raw-update #:name name)) )
      the-sha1-primitive ) ) )

) ;sha1-primitive