8 Un certificat X509 (2) Certificate ::= SIGNED { SEQUENCE{ version [0] IMPLICIT Version DEFAULT v1, serialNumber CertificateSerialNumber, signature AlgorithmIdentifier, issuer Name, validity Validity, subject Name, subjectPublicKeyInfo SubjectPublicKeyInfo, issuerUniqueIdentifier [1] IMPLICIT UniqueIdentifier OPTIONAL, -- If present, version must be v2 or v3 subjectUniqueIdentifier[2] IMPLICIT UniqueIdentifier OPTIONAL -- If present, version must be v2 or v3 extensions[3] Extensions OPTIONAL -- If present, version must be v3 -- } } Version ::= INTEGER { v1(0), v2(1), v3(2) } CertificateSerialNumber ::= INTEGER AlgorithmIdentifier ::= SEQUENCE { algorithmALGORITHM.&id({SupportedAlgorithms}), parametersALGORITHM.&Type ({SupportedAlgorithms} {@algorithm}) OPTIONAL } SupportedAlgorithms ALGORITHM ::= {...