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## org.bouncycastle.openpgp
Class PGPUtil

    java.lang.Object
      org.bouncycastle.openpgp.PGPUtil

All Implemented Interfaces:
  HashAlgorithmTags

    public class PGPUtil

extends java.lang.Object
implements HashAlgorithmTags

Basic utility class

Field Summary

Fields inherited from interface org.bouncycastle.bcpg.HashAlgorithmTags
`DOUBLE_SHA, HAVAL_5_160, MD2, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA384, SHA512, TIGER_192`

Constructor Summary
`PGPUtil()`

Method Summary
`static java.io.InputStream` | `getDecoderStream(java.io.InputStream in)` Return either an ArmoredInputStream or a BCPGInputStream based on whether the initial characters of the stream are binary PGP encodings or not.
`static java.lang.String` | `getDefaultProvider()` Return the provider that will be used by factory classes in situations where a provider must be determined on the fly.
`static javax.crypto.SecretKey` | `makeKeyFromPassPhrase(int algorithm, char[] passPhrase, java.lang.String provider)`
`static javax.crypto.SecretKey` | `makeKeyFromPassPhrase(int algorithm, S2K s2k, char[] passPhrase, java.security.Provider provider)`
`static javax.crypto.SecretKey` | `makeKeyFromPassPhrase(int algorithm, S2K s2k, char[] passPhrase, java.lang.String provider)`
`static javax.crypto.SecretKey` | `makeRandomKey(int algorithm, java.security.SecureRandom random)`
`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.
`static void` | `writeFileToLiteralData(java.io.OutputStream out, char fileType, java.io.File file)` write out the passed in file as a literal data packet.
`static void` | `writeFileToLiteralData(java.io.OutputStream out, char fileType, java.io.File file, byte[] buffer)` write out the passed in file as a literal data packet in partial packet format.

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

Constructor Detail

### PGPUtil

    public PGPUtil()

Method Detail

### getDefaultProvider

    public static java.lang.String getDefaultProvider()

  Return the provider that will be used by factory classes in situations where a provider must be determined on the fly.

  Returns:
    String

### setDefaultProvider

    public 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.

  Parameters:
    `provider` -

### makeRandomKey

    public static javax.crypto.SecretKey makeRandomKey(int algorithm,
                                                       java.security.SecureRandom random)
                                                throws PGPException

  Throws:
    `PGPException`

### makeKeyFromPassPhrase

    public static javax.crypto.SecretKey makeKeyFromPassPhrase(int algorithm,
                                                               char[] passPhrase,
                                                               java.lang.String provider)
                                                        throws java.security.NoSuchProviderException,
                                                               PGPException

  Throws:
    `java.security.NoSuchProviderException`
    `PGPException`

### makeKeyFromPassPhrase

    public static javax.crypto.SecretKey makeKeyFromPassPhrase(int algorithm,
                                                               S2K s2k,
                                                               char[] passPhrase,
                                                               java.lang.String provider)
                                                        throws PGPException,
                                                               java.security.NoSuchProviderException

  Throws:
    `PGPException`
    `java.security.NoSuchProviderException`

### makeKeyFromPassPhrase

    public static javax.crypto.SecretKey makeKeyFromPassPhrase(int algorithm,
                                                               S2K s2k,
                                                               char[] passPhrase,
                                                               java.security.Provider provider)
                                                        throws PGPException,
                                                               java.security.NoSuchProviderException

  Throws:
    `PGPException`
    `java.security.NoSuchProviderException`

### writeFileToLiteralData

    public static void writeFileToLiteralData(java.io.OutputStream out,
                                              char fileType,
                                              java.io.File file)
                                       throws java.io.IOException

  write out the passed in file as a literal data packet.

  Parameters:
    `out` -
    `fileType` - the LiteralData type for the file.
    `file` -
  Throws:
    `java.io.IOException`

### writeFileToLiteralData

    public static void writeFileToLiteralData(java.io.OutputStream out,
                                              char fileType,
                                              java.io.File file,
                                              byte[] buffer)
                                       throws java.io.IOException

  write out the passed in file as a literal data packet in partial packet format.

  Parameters:
    `out` -
    `fileType` - the LiteralData type for the file.
    `file` -
    `buffer` - buffer to be used to chunk the file into partial packets.
  Throws:
    `java.io.IOException`

### getDecoderStream

    public static java.io.InputStream getDecoderStream(java.io.InputStream in)
                                                throws java.io.IOException

  Return either an ArmoredInputStream or a BCPGInputStream based on whether the initial characters of the stream are binary PGP encodings or not.

  Parameters:
    `in` - the stream to be wrapped
  Returns:
    a BCPGInputStream
  Throws:
    `java.io.IOException`

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