SHA-256 is a cryptographic (one-way) hash function, so there is no direct way to decode it. The entire purpose of a cryptographic hash function is that you can’t undo it.
One thing you can do is a brute-force strategy, where you guess what was hashed, then hash it with the same function and see if it matches. Unless the hashed data is very easy to guess, it could take a long time though.
You may find the question “Difference between hashing a password and encrypting it” interesting.
Related Posts:
- Given final block not properly padded
- How can I list the available Cipher algorithms?
- Encrypt Password in Configuration Files?
- Encrypt Password in Configuration Files?
- Good Hash Function for Strings
- NullPointerExcetion Native Method Accessor… Hashing Words Issue
- What kind of Java type is “[B”?
- Could not reserve enough space for object heap
- java.lang.ClassNotFoundException: com.mysql.jdbc.Driver in Eclipse
- “Char cannot be dereferenced” error
- Difference between Inheritance and Composition
- What is the reason behind “non-static method cannot be referenced from a static context”? [duplicate]
- Java string to date conversion
- What does “|=” mean? (pipe equal operator)
- String interpolation in Java 14 or 15
- Round a double to 2 decimal places [duplicate]
- How to make a deep copy of Java ArrayList
- What does request.getParameter return?
- DB2 jdbc connection error Connection refused. ERRORCODE=-4499, SQLSTATE=08001
- Automated Python to Java translation
- EOFException – how to handle?
- How to fix array index out of bounds error?
- Implements vs extends: When to use? What’s the difference?
- Ubuntu: OpenJDK 8 – Unable to locate package
- The @ symbol in java
- Getting Keyboard Input
- catDog string problem at Codingbat.com
- What is the difference between String.subString() and String.subSequence()
- Why Maven project is tied to J2SE-1.5 by default?
- Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
- Exception in thread “main” java.lang.UnsupportedClassVersionError: a (Unsupported major.minor version 51.0)
- org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when ‘hibernate.dialect’ not set
- Is there a concurrent List in Java’s JDK?
- org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when ‘hibernate.dialect’ not set
- Why am I still getting a cannot find Java SE Runtime Environment?
- error: unreported exception FileNotFoundException; must be caught or declared to be thrown
- implicit super constructor Person() is undefined. Must explicitly invoke another constructor?
- java.net.SocketTimeoutException: Read timed out under Tomcat
- How to resolve Error listenerStart when deploying web-app in Tomcat 5.5?
- package does not exist error!
- Required: Variable Found: Value
- What does the colon (:) operator do?
- Double cannot be dereferenced?
- Missing method body, or declare abstract in Java
- java code is showing error. ( ‘;’,expected) [closed]
- How can I edit a .jar file?
- java.lang.ClassNotFoundException: sun.jdbc.odbc.JdbcOdbcDriver Exception occurring. Why?
- JAVA_HOME should point to a JDK not a JRE
- This Activity already has an action bar supplied by the window decor?
- Convert hex string to int
- Orphaned Case Error in Java
- Java, Simplified check if int array contains int
- Converting a string to an integer on Android
- Error: Generic Array Creation
- How to center the text in a JLabel?
- What is the use of a private static variable in Java?
- Call a Class From another class
- Installing WindowBuilder on Eclipse Neon
- Java: how to initialize String[]?
- Regular Expressions on Punctuation
- How to make a countdown timer in Java
- (Java) Tic-Tac-Toe game using 2 dimensional Array
- Incompatible types List of List and ArrayList of ArrayList
- Dice Rolling java program
- What is method hiding in Java? Even the JavaDoc explanation is confusing
- Error: class X is public should be declared in a file named X.java
- How can I remove a substring from a given String?
- Java get String CompareTo as a comparator object
- What does super.paintComponent(g) do?
- Union or intersection of Java Sets
- Get an OutputStream into a String
- Difference between string object and string literal
- Best way to create enum of strings?
- Why use getters and setters/accessors?
- How to use a Do-while loop that continuously prompts a user?
- Java equivalent of unsigned long long?
- Getting “unixtime” in Java
- How do I break out of nested loops in Java?
- Getting a “no interface expected here” when I try to subclass ServiceConnection [duplicate]
- How to determine day of week by passing specific date?
- Python-like list comprehension in Java
- Can an int be null in Java?
- What’s the difference between HashSet and Set?
- Netbeans – Error: Could not find or load main class
- Eclipse IDE – Error: Build path specifies execution environment Java SE 1.7
- Why int[] a = new int[1] instead of just int a?
- ArithmeticException: “Non-terminating decimal expansion; no exact representable decimal result”
- When to use a Map instead of a List in Java?
- How do I replace a character in a string in Java?
- What’s so special about 0x7f?
- Append a single character to a string or char array in java?
- Preventing a Java class from being instantiated and inherited
- Collision Detection between two images in Java
- What does .pack() do?
- String is immutable. What exactly is the meaning?
- How do I autoindent in Netbeans?
- What is an attribute in Java?
- set background color: Android
- Class JavaLaunchHelper is implemented in two places
- No Main class found in NetBeans