org.apache.commons.codec.digest
Class Md5Crypt
- java.lang.Object
- org.apache.commons.codec.digest.Md5Crypt
public class Md5Crypt extends Object
The libc crypt() "$1$" and Apache "$apr1$" MD5-based hash algorithm.Based on the public domain ("beer-ware") C implementation from Poul-Henning Kamp which was found at: crypt-md5.c @ freebsd.org
Source:
$FreeBSD: src/lib/libcrypt/crypt-md5.c,v 1.1 1999/01/21 13:50:09 brandon Exp $
Conversion to Kotlin and from there to Java in 2012.
The C style comments are from the original C code, the ones with "//" from the port.
This class is immutable and thread-safe.
- Since:
- 1.7
- Version:
- $Id: Md5Crypt.java 1552861 2013-12-21 02:03:17Z ggregory $
Constructor Summary
Constructors Constructor and Description Md5Crypt()
Method Summary
Methods Modifier and Type Method and Description static String
apr1Crypt(byte[] keyBytes)
Seeapr1Crypt(String, String)
for details.static String
apr1Crypt(byte[] keyBytes, String salt)
Seeapr1Crypt(String, String)
for details.static String
apr1Crypt(String keyBytes)
Seeapr1Crypt(String, String)
for details.static String
apr1Crypt(String keyBytes, String salt)
Generates an Apache htpasswd compatible "$apr1$" MD5 based hash value.static String
md5Crypt(byte[] keyBytes)
Generates a libc6 crypt() compatible "$1$" hash value.static String
md5Crypt(byte[] keyBytes, String salt)
Generates a libc crypt() compatible "$1$" MD5 based hash value.static String
md5Crypt(byte[] keyBytes, String salt, String prefix)
Generates a libc6 crypt() "$1$" or Apache htpasswd "$apr1$" hash value.
Method Detail
apr1Crypt
public static String apr1Crypt(byte[] keyBytes)
Seeapr1Crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.- Returns:
- the hash value
- Throws:
RuntimeException
- when aNoSuchAlgorithmException
is caught. *
apr1Crypt
public static String apr1Crypt(byte[] keyBytes, String salt)
Seeapr1Crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.salt
- An APR1 salt.- Returns:
- the hash value
- Throws:
IllegalArgumentException
- if the salt does not match the allowed patternRuntimeException
- when aNoSuchAlgorithmException
is caught.
apr1Crypt
public static String apr1Crypt(String keyBytes)
Seeapr1Crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.- Returns:
- the hash value
- Throws:
RuntimeException
- when aNoSuchAlgorithmException
is caught.
apr1Crypt
public static String apr1Crypt(String keyBytes, String salt)
Generates an Apache htpasswd compatible "$apr1$" MD5 based hash value.The algorithm is identical to the crypt(3) "$1$" one but produces different outputs due to the different salt prefix.
- Parameters:
keyBytes
- plaintext string to hash.salt
- salt string including the prefix and optionally garbage at the end. Will be generated randomly if null.- Returns:
- the hash value
- Throws:
IllegalArgumentException
- if the salt does not match the allowed patternRuntimeException
- when aNoSuchAlgorithmException
is caught.
md5Crypt
public static String md5Crypt(byte[] keyBytes)
Generates a libc6 crypt() compatible "$1$" hash value.See
Crypt.crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.- Returns:
- the hash value
- Throws:
RuntimeException
- when aNoSuchAlgorithmException
is caught.
md5Crypt
public static String md5Crypt(byte[] keyBytes, String salt)
Generates a libc crypt() compatible "$1$" MD5 based hash value.See
Crypt.crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.salt
- salt string including the prefix and optionally garbage at the end. Will be generated randomly if null.- Returns:
- the hash value
- Throws:
IllegalArgumentException
- if the salt does not match the allowed patternRuntimeException
- when aNoSuchAlgorithmException
is caught.
md5Crypt
public static String md5Crypt(byte[] keyBytes, String salt, String prefix)
Generates a libc6 crypt() "$1$" or Apache htpasswd "$apr1$" hash value.See
Crypt.crypt(String, String)
orapr1Crypt(String, String)
for details.- Parameters:
keyBytes
- plaintext string to hash.salt
- May be null.prefix
- salt prefix- Returns:
- the hash value
- Throws:
IllegalArgumentException
- if the salt does not match the allowed patternRuntimeException
- when aNoSuchAlgorithmException
is caught.
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