Module java.base
Package java.security

Class PKCS12Attribute

  • All Implemented Interfaces:
    KeyStore.Entry.Attribute
    public final class PKCS12Attribute
extends Object
implements KeyStore.Entry.Attribute
    An attribute associated with a PKCS12 keystore entry. The attribute name is an ASN.1 Object Identifier and the attribute value is a set of ASN.1 types.
    Since:
    1.8

    • Constructor Detail

      • PKCS12Attribute

        public PKCS12Attribute​(String name,
                       String value)
        Constructs a PKCS12 attribute from its name and value. The name is an ASN.1 Object Identifier represented as a list of dot-separated integers. A string value is represented as the string itself. A binary value is represented as a string of colon-separated pairs of hexadecimal digits. Multi-valued attributes are represented as a comma-separated list of values, enclosed in square brackets. See Arrays.toString(java.lang.Object[]).

        A string value will be DER-encoded as an ASN.1 UTF8String and a binary value will be DER-encoded as an ASN.1 Octet String.

        Parameters:
        name - the attribute's identifier
        value - the attribute's value
        Throws:
        NullPointerException - if name or value is null
        IllegalArgumentException - if name or value is incorrectly formatted

      • PKCS12Attribute

        public PKCS12Attribute​(byte[] encoded)
        Constructs a PKCS12 attribute from its ASN.1 DER encoding. The DER encoding is specified by the following ASN.1 definition: 
        
 Attribute ::= SEQUENCE {
     type   AttributeType,
     values SET OF AttributeValue
 }
 AttributeType ::= OBJECT IDENTIFIER
 AttributeValue ::= ANY defined by type
        Parameters:
        encoded - the attribute's ASN.1 DER encoding. It is cloned to prevent subsequent modificaion.
        Throws:
        NullPointerException - if encoded is null
        IllegalArgumentException - if encoded is incorrectly formatted

    • Method Detail

      • getName

        public String getName()
        Returns the attribute's ASN.1 Object Identifier represented as a list of dot-separated integers.
        Specified by:
        getName in interface KeyStore.Entry.Attribute
        Returns:
        the attribute's identifier

      • getValue

        public String getValue()
        Returns the attribute's ASN.1 DER-encoded value as a string. An ASN.1 DER-encoded value is returned in one of the following String formats:
        • the DER encoding of a basic ASN.1 type that has a natural string representation is returned as the string itself. Such types are currently limited to BOOLEAN, INTEGER, OBJECT IDENTIFIER, UTCTime, GeneralizedTime and the following six ASN.1 string types: UTF8String, PrintableString, T61String, IA5String, BMPString and GeneralString.
        • the DER encoding of any other ASN.1 type is not decoded but returned as a binary string of colon-separated pairs of hexadecimal digits.
        Multi-valued attributes are represented as a comma-separated list of values, enclosed in square brackets. See Arrays.toString(java.lang.Object[]).
        Specified by:
        getValue in interface KeyStore.Entry.Attribute
        Returns:
        the attribute value's string encoding

      • getEncoded

        public byte[] getEncoded()
        Returns the attribute's ASN.1 DER encoding.
        Returns:
        a clone of the attribute's DER encoding

      • equals

        public boolean equals​(Object obj)
        Compares this PKCS12Attribute and a specified object for equality.
        Overrides:
        equals in class Object
        Parameters:
        obj - the comparison object
        Returns:
        true if obj is a PKCS12Attribute and their DER encodings are equal.
        See Also:
        Object.hashCode(), HashMap

      • toString

        public String toString()
        Returns a string representation of this PKCS12Attribute.
        Overrides:
        toString in class Object
        Returns:
        a name/value pair separated by an 'equals' symbol