Add crypto PasswordEncoder from 5.0.x

Fixes: gh-5302

core/src/main/java/org/springframework/security/authentication/encoding/BaseDigestPasswordEncoder.java

@@ -22,7 +22,10 @@ package org.springframework.security.authentication.encoding;
  * </p>
  *
  * @author colin sampaleanu
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.PasswordEncoder}
  */
+@Deprecated
 public abstract class BaseDigestPasswordEncoder extends BasePasswordEncoder {
 	// ~ Instance fields
 	// ================================================================================================

core/src/main/java/org/springframework/security/authentication/encoding/BasePasswordEncoder.java

@@ -22,7 +22,10 @@ package org.springframework.security.authentication.encoding;
  * </p>
  *
  * @author Ben Alex
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.PasswordEncoder}
  */
+@Deprecated
 public abstract class BasePasswordEncoder implements PasswordEncoder {
 	// ~ Methods
 	// ========================================================================================================

core/src/main/java/org/springframework/security/authentication/encoding/LdapShaPasswordEncoder.java

@@ -32,6 +32,8 @@ import org.springframework.util.Assert;
  * and non-encoded passwords are in use or when a null implementation is required.
  *
  * @author Luke Taylor
+ * @deprecated @deprecated This is deprecated and marked for deletion. Replace with
+ * of {@link org.springframework.security.crypto.password.LdapShaPasswordEncoder}
  */
 public class LdapShaPasswordEncoder implements PasswordEncoder {
 	// ~ Static fields/initializers

core/src/main/java/org/springframework/security/authentication/encoding/Md4PasswordEncoder.java

@@ -31,7 +31,10 @@ import org.springframework.security.crypto.codec.Utf8;
  * legacy applications, it's not secure, don't use it for anything new!
  *
  * @author Alan Stewart
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.Md4PasswordEncoder}
  */
+@Deprecated
 public class Md4PasswordEncoder extends BaseDigestPasswordEncoder {
 
 	// ~ Methods

core/src/main/java/org/springframework/security/authentication/encoding/Md5PasswordEncoder.java

@@ -33,7 +33,11 @@ package org.springframework.security.authentication.encoding;
  * @author Ray Krueger
  * @author colin sampaleanu
  * @author Ben Alex
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.MessageDigestPasswordEncoder}
+ * with an algorithm of "MD5"
  */
+@Deprecated
 public class Md5PasswordEncoder extends MessageDigestPasswordEncoder {
 
 	public Md5PasswordEncoder() {

core/src/main/java/org/springframework/security/authentication/encoding/MessageDigestPasswordEncoder.java

@@ -51,7 +51,10 @@ import org.springframework.util.Assert;
  * @author Ray Krueger
  * @author Luke Taylor
  * @since 1.0.1
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.MessageDigestPasswordEncoder}
  */
+@Deprecated
 public class MessageDigestPasswordEncoder extends BaseDigestPasswordEncoder {
 
 	private final String algorithm;

core/src/main/java/org/springframework/security/authentication/encoding/PlaintextPasswordEncoder.java

@@ -29,7 +29,10 @@ import java.util.Locale;
  *
  * @author colin sampaleanu
  * @author Ben Alex
+ * @deprecated This class will be removed in Spring Security 5. For passivity switch to
+ * {@link org.springframework.security.crypto.password.NoOpPasswordEncoder}.
  */
+@Deprecated
 public class PlaintextPasswordEncoder extends BasePasswordEncoder {
 	// ~ Instance fields
 	// ================================================================================================

core/src/main/java/org/springframework/security/authentication/encoding/ShaPasswordEncoder.java

@@ -40,7 +40,11 @@ package org.springframework.security.authentication.encoding;
  * @author Ray Krueger
  * @author colin sampaleanu
  * @author Ben Alex
+ * @deprecated This is deprecated and marked for deletion. Replace with an implementation
+ * of {@link org.springframework.security.crypto.password.MessageDigestPasswordEncoder}
+ * with an algorithm "SHA-$strength" (i.e. "SHA-1" or "SHA-256").
  */
+@Deprecated
 public class ShaPasswordEncoder extends MessageDigestPasswordEncoder {
 
 	/**