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package sun.security.pkcs;

import java.io.*;
import sun.security.x509.*;
import sun.security.util.DerValue;
import sun.security.util.DerOutputStream;

This class implements the EncryptedPrivateKeyInfo type, which is defined in PKCS #8 as follows:
EncryptedPrivateKeyInfo ::=  SEQUENCE {
    encryptionAlgorithm   AlgorithmIdentifier,
    encryptedData   OCTET STRING }
Author:Jan Luehe
/** * This class implements the <code>EncryptedPrivateKeyInfo</code> type, * which is defined in PKCS #8 as follows: * * <pre> * EncryptedPrivateKeyInfo ::= SEQUENCE { * encryptionAlgorithm AlgorithmIdentifier, * encryptedData OCTET STRING } * </pre> * * @author Jan Luehe * */
public class EncryptedPrivateKeyInfo { // the "encryptionAlgorithm" field private AlgorithmId algid; // the "encryptedData" field private byte[] encryptedData; // the ASN.1 encoded contents of this class private byte[] encoded;
Constructs (i.e., parses) an EncryptedPrivateKeyInfo from its encoding.
/** * Constructs (i.e., parses) an <code>EncryptedPrivateKeyInfo</code> from * its encoding. */
public EncryptedPrivateKeyInfo(byte[] encoded) throws IOException { if (encoded == null) { throw new IllegalArgumentException("encoding must not be null"); } DerValue val = new DerValue(encoded); DerValue[] seq = new DerValue[2]; seq[0] = val.data.getDerValue(); seq[1] = val.data.getDerValue(); if (val.data.available() != 0) { throw new IOException("overrun, bytes = " + val.data.available()); } this.algid = AlgorithmId.parse(seq[0]); if (seq[0].data.available() != 0) { throw new IOException("encryptionAlgorithm field overrun"); } this.encryptedData = seq[1].getOctetString(); if (seq[1].data.available() != 0) throw new IOException("encryptedData field overrun"); this.encoded = encoded.clone(); }
Constructs an EncryptedPrivateKeyInfo from the encryption algorithm and the encrypted data.
/** * Constructs an <code>EncryptedPrivateKeyInfo</code> from the * encryption algorithm and the encrypted data. */
public EncryptedPrivateKeyInfo(AlgorithmId algid, byte[] encryptedData) { this.algid = algid; this.encryptedData = encryptedData.clone(); }
Returns the encryption algorithm.
/** * Returns the encryption algorithm. */
public AlgorithmId getAlgorithm() { return this.algid; }
Returns the encrypted data.
/** * Returns the encrypted data. */
public byte[] getEncryptedData() { return this.encryptedData.clone(); }
Returns the ASN.1 encoding of this class.
/** * Returns the ASN.1 encoding of this class. */
public byte[] getEncoded() throws IOException { if (this.encoded != null) return this.encoded.clone(); DerOutputStream out = new DerOutputStream(); DerOutputStream tmp = new DerOutputStream(); // encode encryption algorithm algid.encode(tmp); // encode encrypted data tmp.putOctetString(encryptedData); // wrap everything into a SEQUENCE out.write(DerValue.tag_Sequence, tmp); this.encoded = out.toByteArray(); return this.encoded.clone(); } public boolean equals(Object other) { if (this == other) return true; if (!(other instanceof EncryptedPrivateKeyInfo)) return false; try { byte[] thisEncrInfo = this.getEncoded(); byte[] otherEncrInfo = ((EncryptedPrivateKeyInfo)other).getEncoded(); if (thisEncrInfo.length != otherEncrInfo.length) return false; for (int i = 0; i < thisEncrInfo.length; i++) if (thisEncrInfo[i] != otherEncrInfo[i]) return false; return true; } catch (IOException e) { return false; } }
Returns a hashcode for this EncryptedPrivateKeyInfo.
Returns:a hashcode for this EncryptedPrivateKeyInfo.
/** * Returns a hashcode for this EncryptedPrivateKeyInfo. * * @return a hashcode for this EncryptedPrivateKeyInfo. */
public int hashCode() { int retval = 0; for (int i = 0; i < this.encryptedData.length; i++) retval += this.encryptedData[i] * i; return retval; } }