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Diffstat (limited to 'libraries/spongycastle/jce/src/main/java/javax/crypto/spec/SecretKeySpec.java')
| -rw-r--r-- | libraries/spongycastle/jce/src/main/java/javax/crypto/spec/SecretKeySpec.java | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/SecretKeySpec.java b/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/SecretKeySpec.java deleted file mode 100644 index e60be1605..000000000 --- a/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/SecretKeySpec.java +++ /dev/null @@ -1,193 +0,0 @@ -package javax.crypto.spec; - -import javax.crypto.SecretKey; -import java.security.spec.KeySpec; - -/** - * This class specifies a secret key in a provider-independent fashion. - * <p> - * It can be used to construct a <code>SecretKey</code> from a byte array, - * without having to go through a (provider-based) - * <code>SecretKeyFactory</code>. - * <p> - * This class is only useful for raw secret keys that can be represented as - * a byte array and have no key parameters associated with them, e.g., DES or - * Triple DES keys. - * - * @see SecretKey - * @see javax.crypto.SecretKeyFactory - */ -public class SecretKeySpec - implements KeySpec, SecretKey -{ - private static final long serialVersionUID = 6577238317307289933L; - - private String algorithm; - private byte[] key; - - /** - * Constructs a secret key from the given byte array. - * <p> - * This constructor does not check if the given bytes indeed specify a - * secret key of the specified algorithm. For example, if the algorithm is - * DES, this constructor does not check if <code>key</code> is 8 bytes - * long, and also does not check for weak or semi-weak keys. - * In order for those checks to be performed, an algorithm-specific - * <i>key specification</i> class (in this case: - * <a href = "DESKeySpec.html"><code>DESKeySpec</code></a>) - * should be used. - * - * @param key the key material of the secret key. - * @param algorithm the name of the secret-key algorithm to be associated - * See Appendix A in the Java Cryptography Extension API Specification & Reference - * for information about standard algorithm names. - */ - public SecretKeySpec( - byte[] key, - String algorithm) - { - if (key == null) - { - throw new IllegalArgumentException("null key passed"); - } - - if (algorithm == null) - { - throw new IllegalArgumentException("null algorithm passed"); - } - - this.key = new byte[key.length]; - System.arraycopy(key, 0, this.key, 0, key.length); - this.algorithm = algorithm; - } - - /** - * Constructs a secret key from the given byte array, using the first - * <code>len</code> bytes of <code>key</code>, starting at - * <code>offset</code> inclusive. - * <p> - * The bytes that constitute the secret key are those between <code>key[offset]</code> and - * <code>key[offset+len-1]</code> inclusive. - * <p> - * This constructor does not check if the given bytes indeed specify a - * secret key of the specified algorithm. For example, if the algorithm is - * DES, this constructor does not check if <code>key</code> is 8 bytes - * long, and also does not check for weak or semi-weak keys. - * In order for those checks to be performed, an algorithm-specific key - * specification class (in this case: <a href = "DESKeySpec.html"><code>DESKeySpec</code></a>) - * must be used. - * - * @param key the key material of the secret key. - * @param offset the offset in <code>key</code> where the key material starts. - * @param len the length of the key material. - * @param algorithm the name of the secret-key algorithm to be associated - * with the given key material. See Appendix A in the Java Cryptography Extension API - * Specification & Reference for information about standard algorithm names. - */ - public SecretKeySpec( - byte[] key, - int offset, - int len, - String algorithm) - { - if (key == null) - { - throw new IllegalArgumentException("Null key passed"); - } - - if ((key.length - offset) < len) - { - throw new IllegalArgumentException("Bad offset/len"); - } - - if (algorithm == null) - { - throw new IllegalArgumentException("Null algorithm string passed"); - } - - this.key = new byte[len]; - System.arraycopy(key, offset, this.key, 0, len); - this.algorithm = algorithm; - } - - /** - * Returns the name of the algorithm associated with this secret key. - * - * @return the secret key algorithm. - */ - public String getAlgorithm() - { - return algorithm; - } - - /** - * Returns the name of the encoding format for this secret key. - * - * @return the string "RAW". - */ - public java.lang.String getFormat() - { - return "RAW"; - } - - /** - * Returns the key material of this secret key. - * - * @return the key material - */ - public byte[] getEncoded() - { - byte[] tmp = new byte[key.length]; - - System.arraycopy(key, 0, tmp, 0, tmp.length); - - return tmp; - } - - /** - * Calculates a hash code value for the object. - * Objects that are equal will also have the same hashcode. - */ - public int hashCode() - { - int code = algorithm.toUpperCase().hashCode(); - - for (int i = 0; i != this.key.length; i++) - { - code ^= this.key[i] << (8 * (i % 4)); - } - - return code; - } - - public boolean equals( - Object obj) - { - if ((obj == null) || !(obj instanceof SecretKeySpec)) - { - return false; - } - - SecretKeySpec spec = (SecretKeySpec)obj; - - if (!this.algorithm.equalsIgnoreCase(spec.algorithm)) - { - return false; - } - - if (this.key.length != spec.key.length) - { - return false; - } - - for (int i = 0; i != this.key.length; i++) - { - if (this.key[i] != spec.key[i]) - { - return false; - } - } - - return true; - } -} |