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-rw-r--r--libraries/spongycastle/jce/src/main/java/javax/crypto/spec/DESKeySpec.java194
1 files changed, 0 insertions, 194 deletions
diff --git a/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/DESKeySpec.java b/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/DESKeySpec.java
deleted file mode 100644
index 8509a5464..000000000
--- a/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/DESKeySpec.java
+++ /dev/null
@@ -1,194 +0,0 @@
-package javax.crypto.spec;
-
-import java.security.InvalidKeyException;
-import java.security.spec.KeySpec;
-
-/**
- * This class specifies a DES key.
- */
-public class DESKeySpec
- implements KeySpec
-{
- public static final int DES_KEY_LEN = 8;
-
- private byte[] keyBytes = new byte[DES_KEY_LEN];
-
- /**
- * Uses the first 8 bytes in <code>key</code> as the key material for the DES key.
- * <p>
- * The bytes that constitute the DES key are those between
- * <code>key[0]</code> and <code>key[7]</code> inclusive.
- *
- * @param key - the buffer with the DES key material.
- * @exception InvalidKeyException - if the given key material is shorter than 8 bytes.
- */
- public DESKeySpec(
- byte[] key)
- throws InvalidKeyException
- {
- if (key.length < DES_KEY_LEN)
- {
- throw new InvalidKeyException("DES key material too short in construction");
- }
-
- System.arraycopy(key, 0, keyBytes, 0, keyBytes.length);
- }
-
- /**
- * Uses the first 8 bytes in <code>key</code>, beginning at
- * <code>offset</code> inclusive, as the key material for the DES key.
- * <p>
- * The bytes that constitute the DES key are those between
- * <code>key[offset]</code> and <code>key[offset+7]</code> inclusive.
- *
- * @param key the buffer with the DES key material.
- * @param offset the offset in <code>key</code>, where the DES key material starts.
- * @exception InvalidKeyException if the given key material, starting at
- * <code>offset</code> inclusive, is shorter than 8 bytes.
- */
- public DESKeySpec(
- byte[] key,
- int offset)
- throws InvalidKeyException
- {
- if ((key.length - offset) < DES_KEY_LEN)
- {
- throw new InvalidKeyException("DES key material too short in construction");
- }
-
- System.arraycopy(key, offset, keyBytes, 0, keyBytes.length);
- }
-
- /**
- * Returns the DES key material.
- *
- * @return the DES key material.
- */
- public byte[] getKey()
- {
- byte[] tmp = new byte[DES_KEY_LEN];
-
- System.arraycopy(keyBytes, 0, tmp, 0, tmp.length);
-
- return tmp;
- }
-
- /**
- * Checks if the given DES key material, starting at <code>offset</code>
- * inclusive, is parity-adjusted.
- *
- * @param key the buffer with the DES key material.
- * @param offset the offset in <code>key</code>, where the DES key material starts.
- * @returns true if the given DES key material is parity-adjusted, false otherwise.
- * @exception InvalidKeyException if the given key material, starting at <code>offset</code>
- * inclusive, is shorter than 8 bytes.
- */
- public static boolean isParityAdjusted(
- byte[] key,
- int offset)
- throws InvalidKeyException
- {
- if ((key.length - offset) < DES_KEY_LEN)
- {
- throw new InvalidKeyException("key material too short in DESKeySpec.isParityAdjusted");
- }
-
- for (int i = 0; i < DES_KEY_LEN; i++)
- {
- byte keyByte = key[i + offset];
- int count = 0;
-
- keyByte = (byte)((keyByte & 0xff) >> 1);
-
- while (keyByte != 0)
- {
- /*
- * we increment for every "on" bit
- */
- if ((keyByte & 0x01) != 0)
- {
- count++;
- }
-
- keyByte = (byte)((keyByte & 0xff) >> 1);
- }
-
- if ((count & 1) == 1)
- {
- if ((key[i + offset] & 1) == 1)
- {
- return false;
- }
- }
- else if ((key[i + offset] & 1) != 1)
- {
- return false;
- }
- }
-
- return true;
- }
-
- /*
- * Table of weak and semi-weak keys taken from Schneier pp281
- */
- static private final int N_DES_WEAK_KEYS = 16;
-
- static private byte[] DES_weak_keys =
- {
- /* weak keys */
- (byte)0x01,(byte)0x01,(byte)0x01,(byte)0x01, (byte)0x01,(byte)0x01,(byte)0x01,(byte)0x01,
- (byte)0x1f,(byte)0x1f,(byte)0x1f,(byte)0x1f, (byte)0x0e,(byte)0x0e,(byte)0x0e,(byte)0x0e,
- (byte)0xe0,(byte)0xe0,(byte)0xe0,(byte)0xe0, (byte)0xf1,(byte)0xf1,(byte)0xf1,(byte)0xf1,
- (byte)0xfe,(byte)0xfe,(byte)0xfe,(byte)0xfe, (byte)0xfe,(byte)0xfe,(byte)0xfe,(byte)0xfe,
-
- /* semi-weak keys */
- (byte)0x01,(byte)0xfe,(byte)0x01,(byte)0xfe, (byte)0x01,(byte)0xfe,(byte)0x01,(byte)0xfe,
- (byte)0x1f,(byte)0xe0,(byte)0x1f,(byte)0xe0, (byte)0x0e,(byte)0xf1,(byte)0x0e,(byte)0xf1,
- (byte)0x01,(byte)0xe0,(byte)0x01,(byte)0xe0, (byte)0x01,(byte)0xf1,(byte)0x01,(byte)0xf1,
- (byte)0x1f,(byte)0xfe,(byte)0x1f,(byte)0xfe, (byte)0x0e,(byte)0xfe,(byte)0x0e,(byte)0xfe,
- (byte)0x01,(byte)0x1f,(byte)0x01,(byte)0x1f, (byte)0x01,(byte)0x0e,(byte)0x01,(byte)0x0e,
- (byte)0xe0,(byte)0xfe,(byte)0xe0,(byte)0xfe, (byte)0xf1,(byte)0xfe,(byte)0xf1,(byte)0xfe,
- (byte)0xfe,(byte)0x01,(byte)0xfe,(byte)0x01, (byte)0xfe,(byte)0x01,(byte)0xfe,(byte)0x01,
- (byte)0xe0,(byte)0x1f,(byte)0xe0,(byte)0x1f, (byte)0xf1,(byte)0x0e,(byte)0xf1,(byte)0x0e,
- (byte)0xe0,(byte)0x01,(byte)0xe0,(byte)0x01, (byte)0xf1,(byte)0x01,(byte)0xf1,(byte)0x01,
- (byte)0xfe,(byte)0x1f,(byte)0xfe,(byte)0x1f, (byte)0xfe,(byte)0x0e,(byte)0xfe,(byte)0x0e,
- (byte)0x1f,(byte)0x01,(byte)0x1f,(byte)0x01, (byte)0x0e,(byte)0x01,(byte)0x0e,(byte)0x01,
- (byte)0xfe,(byte)0xe0,(byte)0xfe,(byte)0xe0, (byte)0xfe,(byte)0xf1,(byte)0xfe,(byte)0xf1
- };
-
- /**
- * Checks if the given DES key material is weak or semi-weak.
- *
- * @param key the buffer with the DES key material.
- * @param offset the offset in <code>key</code>, where the DES key
- * material starts.
- * @return true if the given DES key material is weak or semi-weak, false otherwise.
- * @exception InvalidKeyException if the given key material, starting at <code>offset</code>
- * inclusive, is shorter than 8 bytes.
- */
- public static boolean isWeak(
- byte[] key,
- int offset)
- throws InvalidKeyException
- {
- if (key.length - offset < DES_KEY_LEN)
- {
- throw new InvalidKeyException("key material too short in DESKeySpec.isWeak");
- }
-
- nextkey: for (int i = 0; i < N_DES_WEAK_KEYS; i++)
- {
- for (int j = 0; j < DES_KEY_LEN; j++)
- {
- if (key[j + offset] != DES_weak_keys[i * DES_KEY_LEN + j])
- {
- continue nextkey;
- }
- }
-
- return true;
- }
- return false;
- }
-}
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