org.maestro.contrib.utils.digest

Interface MessageDigest

All Known Implementing Classes:

Sha1Digest

public interface MessageDigest

Interface for message digest implementations

Method Summary

Modifier and Type	Method and Description
String	calculate(File file) Calculates the message digest for a input stream
String	calculate(InputStream inputStream) Calculates the message digest for a input stream
String	calculate(String path) Calculates the message digest for a input stream
void	save(String source) Saves the message digest for the source file
boolean	verify(String source) Verify the message digest for a file
boolean	verify(String source, String digest) Verify the message digest for a file

Method Detail

calculate

String calculate(InputStream inputStream)
          throws IOException

Calculates the message digest for a input stream

Parameters:

inputStream - The input stream

Returns:

The hexadecimal representation of the message digest

Throws:

IOException - If unable to read from the input stream

calculate

String calculate(File file)
          throws IOException

Calculates the message digest for a input stream

Parameters:

file - input file to calculate the message stream

Returns:

The hexadecimal representation of the message digest

Throws:

IOException - If unable to read the file (ie.: not found)

calculate

String calculate(String path)
          throws IOException

Calculates the message digest for a input stream

Parameters:

path - The path to the file to calculate the digest

Returns:

The hexadecimal representation of the message digest

Throws:

IOException - If unable to read the file or if unable to read from the input stream

verify

boolean verify(String source,
               String digest)
        throws IOException

Verify the message digest for a file

Parameters:

source - The (path to the) source file

digest - The message digest to verify against

Returns:

true if it matches or false otherwise

Throws:

IOException - If unable to read the file or if unable to read from the input stream

verify

boolean verify(String source)
        throws IOException

Verify the message digest for a file

Parameters:

source - The (path to the) source file

Returns:

true if it matches or false otherwise

Throws:

IOException - on I/O errors

save

void save(String source)
   throws IOException

Saves the message digest for the source file

Parameters:

source - the (path to the) source file

Throws:

IOException - If unable to read the file or if unable to read from the input stream