public class PGPUtil extends java.lang.Object implements HashAlgorithmTags
DOUBLE_SHA, HAVAL_5_160, MD2, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA384, SHA512, TIGER_192
Constructor and Description |
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PGPUtil() |
Modifier and Type | Method and Description |
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static java.io.InputStream |
getDecoderStream(java.io.InputStream in)
Obtains a stream that can be used to read PGP data from the provided stream.
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static java.lang.String |
getDefaultProvider()
Return the JCA/JCE provider that will be used by factory classes in situations where a
provider must be determined on the fly.
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static byte[] |
makeRandomKey(int algorithm,
java.security.SecureRandom random)
Generates a random key for a
symmetric encryption algorithm
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static void |
setDefaultProvider(java.lang.String provider)
Set the provider to be used by the package when it is necessary to find one on the fly.
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static void |
writeFileToLiteralData(java.io.OutputStream out,
char fileType,
java.io.File file)
Write out the contents of the provided file as a literal data packet.
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static void |
writeFileToLiteralData(java.io.OutputStream out,
char fileType,
java.io.File file,
byte[] buffer)
Write out the contents of the provided file as a literal data packet in partial packet
format.
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public static java.lang.String getDefaultProvider()
public static void setDefaultProvider(java.lang.String provider)
provider
- the name of the JCA/JCE provider to use by default.public static byte[] makeRandomKey(int algorithm, java.security.SecureRandom random) throws PGPException
symmetric encryption algorithm
.algorithm
- the symmetric key algorithm identifier.random
- a source of random data.PGPException
- if the encryption algorithm is unknown.public static void writeFileToLiteralData(java.io.OutputStream out, char fileType, java.io.File file) throws java.io.IOException
out
- the stream to write the literal data to.fileType
- the PGPLiteralData
type to use for the file data.file
- the file to write the contents of.java.io.IOException
- if an error occurs reading the file or writing to the output stream.public static void writeFileToLiteralData(java.io.OutputStream out, char fileType, java.io.File file, byte[] buffer) throws java.io.IOException
out
- the stream to write the literal data to.fileType
- the PGPLiteralData
type to use for the file data.file
- the file to write the contents of.buffer
- buffer to be used to chunk the file into partial packets.java.io.IOException
- if an error occurs reading the file or writing to the output stream.PGPLiteralDataGenerator#open(OutputStream, char, String, Date, byte[])}.
public static java.io.InputStream getDecoderStream(java.io.InputStream in) throws java.io.IOException
ArmoredInputStream
is used to wrap the provided
stream and remove ASCII-Armored encoding.in
- the stream to be checked and possibly wrapped.java.io.IOException
- if an error occurs reading the stream, or initalising the
ArmoredInputStream
.