Java x509 get serial number

Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. Windows shows the hexadecimal representation of the serial number, whereas Java returns a BigInteger result from XCertificate. To display the BigInteger as a hexadecimal value, just call toString Stack Overflow for Teams — Collaborate and share knowledge with a private group.

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Viewed 13k times. I need to get some data from X certificate. If I open a certificate file in windows, its showing its serial number in this format. Save my name, email, and website in this browser for the next time I comment.

Java Keytool. COM -keypass op3n. PrivateKey; import java. PrivateKey ;. XCertificate ;. FileInputStream; import java. FileNotFoundException; import java. IOException; import java. KeyStore; import java. KeyStoreException; import java. NoSuchAlgorithmException; import java. UnrecoverableEntryException; import java. Certificate; import java. CertificateException; import java. XCertificate; import java. PrivateKeyEntry keyStore. PasswordProtection jksPassword.

FileInputStream ;. FileNotFoundException ;. IOException ;. KeyStore ;. KeyStoreException ;. NoSuchAlgorithmException ;.

It is if the current date and time are within the validity period given in the certificate. It is defined in ASN. CertificateNotYetValidException - if the certificate is not yet valid. Throws: CertificateExpiredException - if the certificate has expired with respect to the date supplied. CertificateNotYetValidException - if the certificate is not yet valid with respect to the date supplied. See Also: checkValidity getVersion public abstract int getVersion Gets the version version number value from the certificate.

The serial number is an integer assigned by the certification authority to each certificate. It must be unique for each certificate issued by a given CA i.

The issuer name identifies the entity that signed and issued the certificate. The issuer name field contains an X. The type of the AttributeValue component is determined by the AttributeType ; in general it will be a directoryString. Returns: a Principal whose name is the issuer distinguished name. Returns: a Principal whose name is the subject name. The relevant ASN.

Returns: the end date of the validity period. Returns: the signature algorithm name. An OID is represented by a set of positive whole numbers separated by periods. For example, the string "1. Returns: the signature algorithm OID string. In most cases, the signature algorithm parameters are null; the parameters are usually supplied with the certificate's public key.