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Java Source Code / Java Documentation » 6.0 JDK Modules sun » tools » sun.tools.jar 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   sun.tools.jar.SignatureFile

SignatureFile
public class SignatureFile (Code)

A signature file as defined in the Manifest and Signature Format. It has essentially the same structure as a Manifest file in that it is a set of RFC 822 headers (sections). The first section contains meta data relevant to the entire file (i.e "Signature-Version:1.0") and each subsequent section contains data relevant to specific entries: entry sections.

Each entry section contains the name of an entry (which must have a counterpart in the manifest). Like the manifest it contains a hash, the hash of the manifest section correspondind to the name. Since the manifest entry contains the hash of the data, this is equivalent to a signature of the data, plus the attributes of the manifest entry.

This signature file format deal with PKCS7 encoded DSA signature block. It should be straightforward to extent to support other algorithms.
version:
   1.35 05/05/07
author:
   David Brown
author:
   Benjamin Renaud



Field Summary
final static  booleandebug
    
final static  String[]hashes
    

Constructor Summary
public  SignatureFile(Manifest manifest, String name)
     Constructs a new Signature file corresponding to a given Manifest.
public  SignatureFile(Manifest manifest, String[] entries, String filename)
     Constructs a new Signature file corresponding to a given Manifest.
public  SignatureFile(InputStream is, String filename)
     Construct a Signature file from an input stream.
exception:
  IOException - if an invalid name is passed in or if astream exception occurs.
public  SignatureFile(InputStream is)
     Construct a Signature file from an input stream.
exception:
  IOException - if an invalid name is passed in or if astream exception occurs.
public  SignatureFile(byte[] bytes)
    

Method Summary
public  voidadd(String[] entries)
     Add a set of entries from the current manifest.
public  voidadd(String entry)
     Add a specific entry from the current manifest.
final static  voiddebug(String s)
    
public  Enumerationentries()
     Returns an enumeration of the entries.
public  MessageHeaderentryAt(int n)
     Returns the n-th entry.
public  PKCS7getBlock()
     Returns the signature block associated with this file.
public  StringgetBlockName()
     Returns the name of the block file, ending with a block suffix such as ".DSA".
public  MessageHeadergetEntry(String name)
     Get the entry corresponding to a given name.
public  StringgetName()
    
public  voidsetBlock(PKCS7 block)
     Sets the signature block associated with this file.
public  voidstream(OutputStream os)
    

Field Detail
debug
final static boolean debug(Code)



hashes
final static String[] hashes(Code)




Constructor Detail
SignatureFile
public SignatureFile(Manifest manifest, String name) throws JarException(Code)
Constructs a new Signature file corresponding to a given Manifest. All entries in the manifest are signed.
Parameters:
  manifest - the manifest to use.
Parameters:
  name - for this signature file. This shouldbe less than 8 characters, and without a suffix (i.e.without a period in it.
exception:
  JarException - if an invalid name is passed in.



SignatureFile
public SignatureFile(Manifest manifest, String[] entries, String filename) throws JarException(Code)
Constructs a new Signature file corresponding to a given Manifest. Specific entries in the manifest are signed.
Parameters:
  manifest - the manifest to use.
Parameters:
  entries - the entries to sign.
Parameters:
  filename - for this signature file. This shouldbe less than 8 characters, and without a suffix (i.e.without a period in it.
exception:
  JarException - if an invalid name is passed in.



SignatureFile
public SignatureFile(InputStream is, String filename) throws IOException(Code)
Construct a Signature file from an input stream.
exception:
  IOException - if an invalid name is passed in or if astream exception occurs.



SignatureFile
public SignatureFile(InputStream is) throws IOException(Code)
Construct a Signature file from an input stream.
exception:
  IOException - if an invalid name is passed in or if astream exception occurs.



SignatureFile
public SignatureFile(byte[] bytes) throws IOException(Code)




Method Detail
add
public void add(String[] entries) throws JarException(Code)
Add a set of entries from the current manifest.



add
public void add(String entry) throws JarException(Code)
Add a specific entry from the current manifest.



debug
final static void debug(String s)(Code)



entries
public Enumeration entries()(Code)
Returns an enumeration of the entries.



entryAt
public MessageHeader entryAt(int n)(Code)
Returns the n-th entry. The global header is a entry 0.



getBlock
public PKCS7 getBlock()(Code)
Returns the signature block associated with this file.



getBlockName
public String getBlockName()(Code)
Returns the name of the block file, ending with a block suffix such as ".DSA".



getEntry
public MessageHeader getEntry(String name)(Code)
Get the entry corresponding to a given name. Returns null if the entry does not exist.



getName
public String getName()(Code)
Returns the name of the signature file, ending with a ".SF" suffix



setBlock
public void setBlock(PKCS7 block)(Code)
Sets the signature block associated with this file.



stream
public void stream(OutputStream os) throws IOException(Code)
Add a signature file at current position in a stream



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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