org.springframework.security.crypto.password
Class StandardPasswordEncoder

java.lang.Object
  org.springframework.security.crypto.password.StandardPasswordEncoder

All Implemented Interfaces:

PasswordEncoder

public final class StandardPasswordEncoder
extends Object
implements PasswordEncoder

A standard PasswordEncoder implementation that uses SHA-256 hashing with 1024 iterations and a random 8-byte random salt value. It uses an additional system-wide secret value to provide additional protection.

The digest algorithm is invoked on the concatenated bytes of the salt, secret and password.

If you are developing a new system, BCryptPasswordEncoder is a better choice both in terms of security and interoperability with other languages.

Constructor Summary

StandardPasswordEncoder()
Constructs a standard password encoder with no additional secret value.

StandardPasswordEncoder(CharSequence secret)
Constructs a standard password encoder with a secret value which is also included in the password hash.

Method Summary

String	encode(CharSequence rawPassword) Encode the raw password.
boolean	matches(CharSequence rawPassword, String encodedPassword) Verify the encoded password obtained from storage matches the submitted raw password after it too is encoded.

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardPasswordEncoder

public StandardPasswordEncoder()

Constructs a standard password encoder with no additional secret value.

StandardPasswordEncoder

public StandardPasswordEncoder(CharSequence secret)

Constructs a standard password encoder with a secret value which is also included in the password hash.

Parameters:

secret - the secret key used in the encoding process (should not be shared)

Method Detail

encode

public String encode(CharSequence rawPassword)

Description copied from interface: PasswordEncoder

Encode the raw password. Generally, a good encoding algorithm applies a SHA-1 or greater hash combined with an 8-byte or greater randomly generated salt.

Specified by:

encode in interface PasswordEncoder

matches

public boolean matches(CharSequence rawPassword,
                       String encodedPassword)

Description copied from interface: PasswordEncoder

Verify the encoded password obtained from storage matches the submitted raw password after it too is encoded. Returns true if the passwords match, false if they do not. The stored password itself is never decoded.

Specified by:

matches in interface PasswordEncoder

Parameters:

rawPassword - the raw password to encode and match

encodedPassword - the encoded password from storage to compare with

Returns:

true if the raw password, after encoding, matches the encoded password from storage