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package org.bouncycastle.jcajce;
import org.bouncycastle.crypto.PBEParametersGenerator;
/**
* A password based key for use with PKCS#12.
*/
public class PKCS12Key
implements PBKDFKey
{
private final char[] password;
private final boolean useWrongZeroLengthConversion;
/**
* Basic constructor for a password based key - secret key generation parameters will be passed separately..
*
* @param password password to use.
*/
public PKCS12Key(char[] password)
{
this(password, false);
}
/**
* Unfortunately there seems to be some confusion about how to handle zero length
* passwords.
*
* @param password password to use.
* @param useWrongZeroLengthConversion use the incorrect encoding approach (add pad bytes)
*/
public PKCS12Key(char[] password, boolean useWrongZeroLengthConversion)
{
if (password == null)
{
password = new char[0];
}
this.password = new char[password.length];
this.useWrongZeroLengthConversion = useWrongZeroLengthConversion;
System.arraycopy(password, 0, this.password, 0, password.length);
}
/**
* Return a reference to the char[] array holding the password.
*
* @return a reference to the password array.
*/
public char[] getPassword()
{
return password;
}
/**
* Return the password based key derivation function this key is for,
*
* @return the string "PKCS12"
*/
public String getAlgorithm()
{
return "PKCS12";
}
/**
* Return the format encoding.
*
* @return the string "PKCS12", representing the char[] to byte[] conversion.
*/
public String getFormat()
{
return "PKCS12";
}
/**
* Return the password converted to bytes.
*
* @return the password converted to a byte array.
*/
public byte[] getEncoded()
{
if (useWrongZeroLengthConversion && password.length == 0)
{
return new byte[2];
}
return PBEParametersGenerator.PKCS12PasswordToBytes(password);
}
}
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