# --------------------------------------------
# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
# --------------------------------------------
 
cff-version: 1.2.0
message: 'To cite package "pdfsigner" in publications use:'
type: software
license: GPL-3.0-only
title: 'pdfsigner: Digitally Sign and Verify PDF Documents'
version: 0.2.2
abstract: Digitally sign PDF documents with a 'PKCS#12' keystore and verify their
  signatures. Signing produces a detached 'PKCS#7' / 'CMS' signature ('adbe.pkcs7.detached')
  over the document and is applied as an incremental update, so existing signatures
  remain valid. The cryptography and PDF manipulation are performed by a bundled,
  pure-'Rust' backend (the 'pdf_signer' crate); no Java runtime, 'OpenSSL', or external
  command-line tools are required. Visible signature appearances with custom text
  are supported.
authors:
- family-names: Leite
  given-names: Andre
  email: leite@castlab.org
- family-names: Vasconcelos
  given-names: Hugo
  email: hugo.vasconcelos@ufpe.br
- family-names: Bezerra
  given-names: Diogo
  email: diogo.bezerra@ufpe.br
repository: https://cran.r-universe.dev
repository-code: https://github.com/StrategicProjects/pdfsigner
commit: 01c23e490140789717122742e972d2569a26e645
url: https://github.com/StrategicProjects/pdfsigner
date-released: '2026-06-21'
contact:
- family-names: Leite
  given-names: Andre
  email: leite@castlab.org