Package org.eclipse.jetty.util.security
Class UnixCrypt
java.lang.Object
org.eclipse.jetty.util.security.UnixCrypt
Unix Crypt. Implements the one way cryptography used by Unix systems for
simple password protection.
- Version:
- $Id: UnixCrypt.java,v 1.1 2005/10/05 14:09:14 janb Exp $
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final byte[]
private static final long[][]
private static final byte[]
private static final byte[]
private static final long[][]
private static final byte[]
private static final byte[]
private static final byte[]
private static final byte[]
private static final long[][]
private static final byte[]
private static final long[][][]
private static final byte[]
private static final byte[][]
private static final long[][]
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic String
Encrypts String into crypt (Unix) code.private static long
des_cipher
(long in, int salt, int num_iter, long[] KS) Returns the DES encrypted code of the given word with the specified environment.private static long[]
des_setkey
(long keyword) Returns the key schedule for the given key.private static void
init_perm
(long[][] perm, byte[] p, int chars_out) Initializes the given permutation table with the mapping table.static void
private static long
perm3264
(int c, long[][] p) Returns the permutation of the given 32-bit code with the specified permutataion table.private static long
perm6464
(long c, long[][] p) Returns the permutation of the given 64-bit code with the specified permutataion table.private static int
to_six_bit
(int num) Returns the transposed and split code of a 24-bit code into a 4-byte code, each having 6 bits.private static long
to_six_bit
(long num) Returns the transposed and split code of two 24-bit code into two 4-byte code, each having 6 bits.
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Field Details
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IP
private static final byte[] IP -
ExpandTr
private static final byte[] ExpandTr -
PC1
private static final byte[] PC1 -
Rotates
private static final byte[] Rotates -
PC2
private static final byte[] PC2 -
S
private static final byte[][] S -
P32Tr
private static final byte[] P32Tr -
CIFP
private static final byte[] CIFP -
ITOA64
private static final byte[] ITOA64 -
A64TOI
private static final byte[] A64TOI -
PC1ROT
private static final long[][] PC1ROT -
PC2ROT
private static final long[][][] PC2ROT -
IE3264
private static final long[][] IE3264 -
SPE
private static final long[][] SPE -
CF6464
private static final long[][] CF6464
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Constructor Details
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UnixCrypt
private UnixCrypt()You can't call the constructer.
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Method Details
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to_six_bit
private static int to_six_bit(int num) Returns the transposed and split code of a 24-bit code into a 4-byte code, each having 6 bits. -
to_six_bit
private static long to_six_bit(long num) Returns the transposed and split code of two 24-bit code into two 4-byte code, each having 6 bits. -
perm6464
private static long perm6464(long c, long[][] p) Returns the permutation of the given 64-bit code with the specified permutataion table. -
perm3264
private static long perm3264(int c, long[][] p) Returns the permutation of the given 32-bit code with the specified permutataion table. -
des_setkey
private static long[] des_setkey(long keyword) Returns the key schedule for the given key. -
des_cipher
private static long des_cipher(long in, int salt, int num_iter, long[] KS) Returns the DES encrypted code of the given word with the specified environment. -
init_perm
private static void init_perm(long[][] perm, byte[] p, int chars_out) Initializes the given permutation table with the mapping table. -
crypt
Encrypts String into crypt (Unix) code.- Parameters:
key
- the key to be encryptedsetting
- the salt to be used- Returns:
- the encrypted String
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main
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