https://openjdk.java.net/ 
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package javax.crypto.spec;


This class specifies the source for encoding input P in OAEP Padding,
as defined in the
PKCS #1
standard.

PKCS1PSourceAlgorithms    ALGORITHM-IDENTIFIER ::= {
  { OID id-pSpecified PARAMETERS OCTET STRING },
  ...  -- Allows for future expansion --
}



Author:Valerie Peng
Since:1.5
/**
 * This class specifies the source for encoding input P in OAEP Padding,
 * as defined in the
 * <a href="http://www.ietf.org/rfc/rfc3447.txt">PKCS #1</a>
 * standard.
 * <pre>
 * PKCS1PSourceAlgorithms    ALGORITHM-IDENTIFIER ::= {
 *   { OID id-pSpecified PARAMETERS OCTET STRING },
 *   ...  -- Allows for future expansion --
 * }
 * </pre>
 * @author Valerie Peng
 *
 * @since 1.5
 */
public class PSource {

    private String pSrcName;

    
Constructs a source of the encoding input P for OAEP
padding as defined in the PKCS #1 standard using the
specified PSource algorithm.

Params:
  • pSrcName – the algorithm for the source of the
encoding input P.
Throws:
/**
     * Constructs a source of the encoding input P for OAEP
     * padding as defined in the PKCS #1 standard using the
     * specified PSource algorithm.
     * @param pSrcName the algorithm for the source of the
     * encoding input P.
     * @exception NullPointerException if <code>pSrcName</code>
     * is null.
     */
    protected PSource(String pSrcName) {
        if (pSrcName == null) {
            throw new NullPointerException("pSource algorithm is null");
        }
        this.pSrcName = pSrcName;
    }
    
Returns the PSource algorithm name.

Returns:the PSource algorithm name.
/**
     * Returns the PSource algorithm name.
     *
     * @return the PSource algorithm name.
     */
    public String getAlgorithm() {
        return pSrcName;
    }

    
This class is used to explicitly specify the value for
encoding input P in OAEP Padding.

Since:1.5
/**
     * This class is used to explicitly specify the value for
     * encoding input P in OAEP Padding.
     *
     * @since 1.5
     */
    public static final class PSpecified extends PSource {

        private byte[] p = new byte[0];

        
The encoding input P whose value equals byte[0].

/**
         * The encoding input P whose value equals byte[0].
         */
        public static final PSpecified DEFAULT = new PSpecified(new byte[0]);

        
Constructs the source explicitly with the specified
value p as the encoding input P.
Note:

Params:
  • p – the value of the encoding input. The contents
of the array are copied to protect against subsequent
modification.
Throws:
/**
         * Constructs the source explicitly with the specified
         * value <code>p</code> as the encoding input P.
         * Note:
         * @param p the value of the encoding input. The contents
         * of the array are copied to protect against subsequent
         * modification.
         * @exception NullPointerException if <code>p</code> is null.
         */
        public PSpecified(byte[] p) {
            super("PSpecified");
            this.p = p.clone();
        }
        
Returns the value of encoding input P.

Returns:the value of encoding input P. A new array is
returned each time this method is called.
/**
         * Returns the value of encoding input P.
         * @return the value of encoding input P. A new array is
         * returned each time this method is called.
         */
        public byte[] getValue() {
            return (p.length==0? p: p.clone());
        }
    }
}