File	Doc	Category	Size	Date	Package
SecretKeySpec.java	API Doc	Android 1.5 API	6200	Wed May 06 22:41:02 BST 2009	javax.crypto.spec

SecretKeySpec

• java.lang.Object

Fields Summary
private static final long	serialVersionUID
private final byte[]	key
private final String	algorithm
private final String	format

Constructors Summary
public SecretKeySpec(byte[] key, String algorithm) Creates a new SecretKeySpec for the specified key data and algorithm name. param key the key data. param algorithm the algorithm name. throws IllegalArgumentException if the key data or the algorithm name is null or if the key data is empty. //$NON-NLS-1$ if (key == null) { throw new IllegalArgumentException(Messages.getString("crypto.05")); //$NON-NLS-1$ } if (key.length == 0) { throw new IllegalArgumentException(Messages.getString("crypto.35")); //$NON-NLS-1$ } if (algorithm == null) { throw new IllegalArgumentException(Messages.getString("crypto.02")); //$NON-NLS-1$ } this.algorithm = algorithm; this.key = new byte[key.length]; System.arraycopy(key, 0, this.key, 0, key.length);
public SecretKeySpec(byte[] key, int offset, int len, String algorithm) Creates a new SecretKeySpec for the key data from the specified buffer key starting at offset with length len and the specified algorithm name. param key the key data. param offset the offset. param len the size of the key data. param algorithm the algorithm name. throws IllegalArgumentException if the key data or the algorithm name is null, the key data is empty or offset and len do not specify a valid chunk in the buffer key. throws ArrayIndexOutOfBoundsException if offset or len is negative. if (key == null) { throw new IllegalArgumentException(Messages.getString("crypto.05")); //$NON-NLS-1$ } if (key.length == 0) { throw new IllegalArgumentException(Messages.getString("crypto.35")); //$NON-NLS-1$ } // BEGIN android-changed if (len < 0 || offset < 0) { throw new ArrayIndexOutOfBoundsException(Messages.getString("crypto.36")); //$NON-NLS-1$ } // END android-changed if ((key.length - offset < len)) { throw new IllegalArgumentException(Messages.getString("crypto.37")); //$NON-NLS-1$ } if (algorithm == null) { throw new IllegalArgumentException(Messages.getString("crypto.02")); //$NON-NLS-1$ } this.algorithm = algorithm; this.key = new byte[len]; System.arraycopy(key, offset, this.key, 0, len);

Methods Summary
public boolean	equals(java.lang.Object obj) Compares the specified object with this SecretKeySpec instance. param obj the object to compare. return true if the algorithm name and key of both object are equal, otherwise false. if (obj == this) { return true; } if (!(obj instanceof SecretKeySpec)) { return false; } SecretKeySpec ks = (SecretKeySpec) obj; return (algorithm.equalsIgnoreCase(ks.algorithm)) && (Arrays.equals(key, ks.key));
public java.lang.String	getAlgorithm() Returns the algorithm name. return the algorithm name. return algorithm;
public byte[]	getEncoded() Returns the encoded form of this secret key. return the encoded form of this secret key. byte[] result = new byte[key.length]; System.arraycopy(key, 0, result, 0, key.length); return result;
public java.lang.String	getFormat() Returns the name of the format used to encode the key. return the format name "RAW". return format;
public int	hashCode() Returns the hash code of this SecretKeySpec object. return the hash code. int result = algorithm.length(); for (byte element : key) { result += element; } return result;