ConcurrentMessageDigest (Apache Tomcat 7.0.67 API Documentation)

Apache Tomcat 7.0.67

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java.lang.Object
- org.apache.tomcat.util.security.ConcurrentMessageDigest

```
public class ConcurrentMessageDigest
extends java.lang.Object
```
A thread safe wrapper around MessageDigest that does not make use of ThreadLocal and - broadly - only creates enough MessageDigest objects to satisfy the concurrency requirements.

Method Summary

Methods
Modifier and Type	Method and Description
`static byte[]`	`digest(java.lang.String algorithm, byte[]... input)`
`static byte[]`	`digestMD5(byte[]... input)`
`static byte[]`	`digestSHA1(byte[]... input)`
`static void`	`init(java.lang.String algorithm)` Ensures that `digest(String, byte[][])` will support the specified algorithm.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - digestMD5
```
public static byte[] digestMD5(byte[]... input)
```
  - digestSHA1
```
public static byte[] digestSHA1(byte[]... input)
```
  - digest
```
public static byte[] digest(java.lang.String algorithm,
            byte[]... input)
```
  - init
```
public static void init(java.lang.String algorithm)
                 throws java.security.NoSuchAlgorithmException
```
    Ensures that digest(String, byte[][]) will support the specified algorithm. This method must be called and return successfully before using digest(String, byte[][]).
    
    Parameters:
    algorithm - The message digest algorithm to be supported
    
    Throws:
    
    java.security.NoSuchAlgorithmException - If the algorithm is not supported by the JVM

Apache Tomcat 7.0.67

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