Class UnixCrypt
This class only implements the traditional 56 bit DES based algorithm. Please use DigestUtils.crypt() for a method that distinguishes between all the algorithms supported in the current glibc's crypt().
The Java implementation was taken from the JetSpeed Portal project (see org.apache.jetspeed.services.security.ldap.UnixCrypt).
This class is slightly incompatible if the given salt contains characters that are not part of the allowed range [a-zA-Z0-9./].
This class is immutable and thread-safe.
- Since:
- 1.7
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic String
crypt
(byte[] original) Generates a crypt(3) compatible hash using the DES algorithm.static String
Generates a crypt(3) compatible hash using the DES algorithm.static String
Generates a crypt(3) compatible hash using the DES algorithm.static String
Generates a crypt(3) compatible hash using the DES algorithm.
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Constructor Details
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UnixCrypt
public UnixCrypt()
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Method Details
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crypt
Generates a crypt(3) compatible hash using the DES algorithm.A salt is generated for you using
ThreadLocalRandom
; for more secure salts consider usingSecureRandom
to generate your own salts and callingcrypt(byte[], String)
.- Parameters:
original
- plaintext password- Returns:
- a 13 character string starting with the salt string
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crypt
Generates a crypt(3) compatible hash using the DES algorithm.Using unspecified characters as salt results incompatible hash values.
- Parameters:
original
- plaintext passwordsalt
- a two character string drawn from [a-zA-Z0-9./]. The salt may be null, in which case a salt is generated for you usingThreadLocalRandom
; for more secure salts consider usingSecureRandom
to generate your own salts.- Returns:
- a 13 character string starting with the salt string
- Throws:
IllegalArgumentException
- if the salt does not match the allowed pattern
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crypt
Generates a crypt(3) compatible hash using the DES algorithm.A salt is generated for you using
ThreadLocalRandom
; for more secure salts consider usingSecureRandom
to generate your own salts and callingcrypt(String, String)
.- Parameters:
original
- plaintext password- Returns:
- a 13 character string starting with the salt string
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crypt
Generates a crypt(3) compatible hash using the DES algorithm.- Parameters:
original
- plaintext passwordsalt
- a two character string drawn from [a-zA-Z0-9./]. The salt may be null, in which case a salt is generated for you usingThreadLocalRandom
; for more secure salts consider usingSecureRandom
to generate your own salts.- Returns:
- a 13 character string starting with the salt string
- Throws:
IllegalArgumentException
- if the salt does not match the allowed pattern
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