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Add nullability contract to PasswordEncoder#encode #18334

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Add nullability contract to PasswordEncoder#encode #18334

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2 changes: 2 additions & 0 deletions crypto/src/main/java/org/springframework/security/crypto/password/PasswordEncoder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
package org.springframework.security.crypto.password;

import org.jspecify.annotations.Nullable;
import org.springframework.lang.Contract;

/**
* Service interface for encoding passwords.
Expand All @@ -36,6 +37,7 @@ public interface PasswordEncoder {
* @return A non-null encoded password, unless the rawPassword was null in which case
* the result must be null.
*/
@Contract("null -> null; !null -> !null")
@Nullable String encode(@Nullable CharSequence rawPassword);

/**
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