Class DistinguishedName

java.lang.Object
com.codename1.backend.security.pki.DistinguishedName
public final class DistinguishedName extends Object

An X.500 distinguished name, as a certificate's subject and issuer carry it.

toString() writes the RFC 4514 form, most specific attribute first: CN=api.example.com,O=Example,C=US. parse(String) reads that form back, and getEncoded() is the DER a certificate carries.

Two names are equals(Object) when their DER is identical, or when their RFC 4514 strings match ignoring ASCII case. That is the comparison chain building needs in practice: CAs copy the issuer name byte for byte. The full RFC 5280 comparison (Unicode case folding, whitespace collapsing) is not done.

  • Method Summary

    Modifier and Type
    Method
    Description
    static DistinguishedName
    decode(byte[] der)
    Reads a Name from its DER.
    boolean
    equals(Object other)
    Indicates whether some other object is "equal to" this one.
    String
    get(String attribute)
    The first value of an attribute, by its short name (CN, O) or dotted OID, or null when the name has none.
    byte[]
    getEncoded()
    The DER of this name.
    int
    hashCode()
    Returns a hash code value for the object.
    boolean
    isEmpty()
    True for a name with no attributes, which a certificate whose identity is only in its subject alternative names may carry.
    static DistinguishedName
    parse(String rfc4514)
    Reads the RFC 4514 form: CN=api.example.com,O=Example,C=US.
    String
    toString()
    The RFC 4514 form.

    Methods inherited from class Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Method Details

    • decode

      public static DistinguishedName decode(byte[] der) throws IOException
      Reads a Name from its DER.
      Throws:
      IOException

    • parse

      public static DistinguishedName parse(String rfc4514) throws IOException

      Reads the RFC 4514 form: CN=api.example.com,O=Example,C=US. Spaces around = and , are dropped, and \, escapes a comma. Every attribute is its own RDN; multi-valued RDNs (+) are not written.

      C is written as a PrintableString, DC and EMAILADDRESS as an IA5String, everything else as a UTF8String, which is what RFC 5280 asks of a new certificate.

      Throws:
      IOException

    • getEncoded

      public byte[] getEncoded()
      The DER of this name.

    • get

      public String get(String attribute)
      The first value of an attribute, by its short name (CN, O) or dotted OID, or null when the name has none. For the subject of a certificate, get("CN") is the common name.

    • isEmpty

      public boolean isEmpty()
      True for a name with no attributes, which a certificate whose identity is only in its subject alternative names may carry.

    • equals

      public boolean equals(Object other)
      Description copied from class: Object
      Indicates whether some other object is "equal to" this one. The equals method implements an equivalence relation: It is reflexive: for any reference value x, x.equals(x) should return true. It is symmetric: for any reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true. It is transitive: for any reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true. It is consistent: for any reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the object is modified. For any non-null reference value x, x.equals(null) should return false. The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any reference values x and y, this method returns true if and only if x and y refer to the same object (x==y has the value true).
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Description copied from class: Object
      Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable. The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables. As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      The RFC 4514 form.
      Overrides:
      toString in class Object