https://www.docusign.com/pt-br/blog/certificado-digital lei#:~:text=Essa%20Medida%20Provis%C3%B3ria%20foi%20criada,uma%20assinatura%20com%20firma%20reconhecida.
https://fia.com.br/blog/assinatura-eletronica/#:~:text=Para%20que%20serve%20a%20assinatura%20eletr%C3%B4nica&text=Essa%20ferramenta%20foi%20criada%20para,partes%20podem%20estabelecer%20um%20acordo.
https://en.wikipedia.org/wiki/Digital_signature
https://crypto.stackexchange.com/questions/5350/what-is-a-trapdoor-permutation
https://www.scielo.br/j/cebape/a/Z3PQHS9JcsQq9wCVPC5c4kH/?lang=pt
https://www.repositorio.ufal.br/bitstream/riufal/6701/1/Blockchain%3A%20um%20panorama%20cient%C3%ADfico%20e%20tecnol%C3%B3gico.pdf
https://pantheon.ufrj.br/bitstream/11422/9346/1/GDMonteiro.pdf
https://repositorio.pucgoias.edu.br/jspui/bitstream/123456789/2142/2/TCC%20-%20Assinatrua%20Digital%20-%20ELYSA%20PUC%20A05%20%281%29.pdf
https://www.ssl.com/pt/artigo/como-escolher-a-solu%C3%A7%C3%A3o-de-assinatura-digital-certa-para-o-seu-neg%C3%B3cio/
https://e.ufsc.br/
