SóProvas


ID
162226
Banca
FCC
Órgão
TCE-AL
Ano
2008
Provas
Disciplina
Segurança da Informação
Assuntos

No certificado padrão X.509, o campo issuer contém

Alternativas
Comentários
  • Nem precisa decorar o padrão X.509:

    Issue = Emitir
    Issuer = Emissor

    Quem emite o certificado é a autoridade certificadora.
  • The structure of an X.509 v3 digital certificate is as follows:

    • Certificate
      • Version                         (LETRA A)
      • Serial Number
      • Algorithm ID                 (LETRA B)
      • Issuer                            (LETRA E)
      • Validity
        • Not Before
        • Not After
      • Subject                          (LETRA C)
      • Subject Public Key Info
        • Public Key Algorithm
        • Subject Public Key
      • Issuer Unique Identifier (optional)
      • Subject Unique Identifier (optional)
      • Extensions (optional)
        • ...
    • Certificate Signature Algorithm
    • Certificate Signature                 (LETRA D)
  • Apenas complementando para ficar um pouco mais claro:

    <img src="http://dl.drobox.com/u/9600628/campos_cert_x.509.PNG"/>

    Bons estudos!

    Carlos Markennedy
  • não entendi?

    Alguém para detalhar esta questão por favor.  
    Att.:
    Roberta Faria 
  • Atributos do X509:

     

    Subject name = Nome do titular : Nome da entidade para o qual o certificado foi emitido.
    Serial Number: Used to uniquely identify the certificate.
    Subject: The person, or entity identified.
    Signature Algorithm: The algorithm used to create the signature.
    Issuer: The entity that verified the information and issued the certificate.
    Valid-From: The date the certificate is first valid from.
    Valid-To: The expiration date.
    Key-Usage: Purpose of the public key (e.g. encipherment, signature, certificate signing...).
    Public Key: the purpose of SSL when used with HTTP is not just to encrypt the traffic, but also to authenticate who the owner of the website is, and that someone's been willing to invest time and money into proving the authenticity and ownership of their domain.
    Thumbprint Algorithm: The algorithm used to hash the certificate.
    Thumbprint: The hash itself to ensure that the certificate has not been tampered with.

  • e-

    The structure of an X.509 v3 digital certificate is as follows:

       Certificate

           Version Number

           Serial Number

           Signature Algorithm ID

           Issuer Name

           Validity period

               Not Before

               Not After

           Subject name

           Subject Public Key Info

               Public Key Algorithm

               Subject Public Key

           Issuer Unique Identifier (optional)

           Subject Unique Identifier (optional)

           Extensions (optional)

               ...

       Certificate Signature Algorithm

       Certificate Signature

    https://en.wikipedia.org/wiki/X.509