程序包 cn.bbwres.biscuit.utils

类 BCryptUtil

java.lang.Object

cn.bbwres.biscuit.utils.BCryptUtil

public class BCryptUtil
extends Object

加密工具

作者:

zhanglinfeng

构造器概要

构造器

构造器	说明
BCryptUtil()

方法概要

修饰符和类型	方法	说明
static boolean	checkpw(byte[] passwordb, String hashed)	Check that a password (as a byte array) matches a previously hashed one
static boolean	checkpw(String plaintext, String hashed)	Check that a plaintext password matches a previously hashed one
static String	gensalt()	Generate a salt for use with the BCrypt.hashpw() method, selecting a reasonable default for the number of hashing rounds to apply
static String	gensalt(int log_rounds)	Generate a salt for use with the BCrypt.hashpw() method
static String	gensalt(int log_rounds, SecureRandom random)	Generate a salt for use with the BCrypt.hashpw() method
static String	gensalt(String prefix)
static String	gensalt(String prefix, int log_rounds)	Generate a salt for use with the BCrypt.hashpw() method
static String	gensalt(String prefix, int log_rounds, SecureRandom random)	Generate a salt for use with the BCrypt.hashpw() method
static String	hashpw(byte[] passwordb, String salt)	Hash a password using the OpenBSD bcrypt scheme
static String	hashpw(String password, String salt)	Hash a password using the OpenBSD bcrypt scheme

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

BCryptUtil

public BCryptUtil()

方法详细资料

hashpw

public static String hashpw(String password,
                            String salt)

Hash a password using the OpenBSD bcrypt scheme

参数:

password - the password to hash

salt - the salt to hash with (perhaps generated using BCrypt.gensalt)

返回:

the hashed password

hashpw

public static String hashpw(byte[] passwordb,
                            String salt)

Hash a password using the OpenBSD bcrypt scheme

参数:

passwordb - the password to hash, as a byte array

salt - the salt to hash with (perhaps generated using BCrypt.gensalt)

返回:

the hashed password

gensalt

public static String gensalt(String prefix,
                             int log_rounds,
                             SecureRandom random)
                      throws IllegalArgumentException

Generate a salt for use with the BCrypt.hashpw() method

参数:

prefix - the prefix value (default $2a)

log_rounds - the log2 of the number of rounds of hashing to apply - the work factor therefore increases as 2**log_rounds.

random - an instance of SecureRandom to use

返回:

an encoded salt value

抛出:

IllegalArgumentException - if prefix or log_rounds is invalid

gensalt

public static String gensalt(String prefix,
                             int log_rounds)
                      throws IllegalArgumentException

Generate a salt for use with the BCrypt.hashpw() method

参数:

prefix - the prefix value (default $2a)

log_rounds - the log2 of the number of rounds of hashing to apply - the work factor therefore increases as 2**log_rounds.

返回:

an encoded salt value

抛出:

IllegalArgumentException - if prefix or log_rounds is invalid

gensalt

public static String gensalt(int log_rounds,
                             SecureRandom random)
                      throws IllegalArgumentException

Generate a salt for use with the BCrypt.hashpw() method

参数:

log_rounds - the log2 of the number of rounds of hashing to apply - the work factor therefore increases as 2**log_rounds.

random - an instance of SecureRandom to use

返回:

an encoded salt value

抛出:

IllegalArgumentException - if log_rounds is invalid

gensalt

public static String gensalt(int log_rounds)
                      throws IllegalArgumentException

Generate a salt for use with the BCrypt.hashpw() method

参数:

log_rounds - the log2 of the number of rounds of hashing to apply - the work factor therefore increases as 2**log_rounds.

返回:

an encoded salt value

抛出:

IllegalArgumentException - if log_rounds is invalid

gensalt

public static String gensalt(String prefix)

gensalt

public static String gensalt()

Generate a salt for use with the BCrypt.hashpw() method, selecting a reasonable default for the number of hashing rounds to apply

返回:

an encoded salt value

checkpw

public static boolean checkpw(String plaintext,
                              String hashed)

Check that a plaintext password matches a previously hashed one

参数:

plaintext - the plaintext password to verify

hashed - the previously-hashed password

返回:

true if the passwords match, false otherwise

checkpw

public static boolean checkpw(byte[] passwordb,
                              String hashed)

Check that a password (as a byte array) matches a previously hashed one

参数:

passwordb - the password to verify, as a byte array

hashed - the previously-hashed password

返回:

true if the passwords match, false otherwise

从以下版本开始:

5.3