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## org.bouncycastle.crypto.generators
Class PKCS12ParametersGenerator

    java.lang.Object
      org.bouncycastle.crypto.PBEParametersGenerator
          org.bouncycastle.crypto.generators.PKCS12ParametersGenerator

public class PKCS12ParametersGenerator
extends PBEParametersGenerator

Generator for PBE derived keys and ivs as defined by PKCS 12 V1.0.

The document this implementation is based on can be found at RSA's PKCS12 Page

Field Summary
`static int` | `IV_MATERIAL`
`static int` | `KEY_MATERIAL`
`static int` | `MAC_MATERIAL`

Fields inherited from class org.bouncycastle.crypto.PBEParametersGenerator
`iterationCount, password, salt`

Constructor Summary
`PKCS12ParametersGenerator(Digest digest)` Construct a PKCS 12 Parameters generator.

Method Summary
`CipherParameters` | `generateDerivedMacParameters(int keySize)` Generate a key parameter for use with a MAC derived from the password, salt, and iteration count we are currently initialised with.
`CipherParameters` | `generateDerivedParameters(int keySize)` Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.
`CipherParameters` | `generateDerivedParameters(int keySize, int ivSize)` Generate a key with initialisation vector parameter derived from the password, salt, and iteration count we are currently initialised with.

Methods inherited from class org.bouncycastle.crypto.PBEParametersGenerator
`getIterationCount, getPassword, getSalt, init, PKCS12PasswordToBytes, PKCS5PasswordToBytes`

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

Field Detail

### KEY_MATERIAL

    public static final int KEY_MATERIAL

See Also:
  Constant Field Values

### IV_MATERIAL

    public static final int IV_MATERIAL

See Also:
  Constant Field Values

### MAC_MATERIAL

    public static final int MAC_MATERIAL

See Also:
  Constant Field Values

Constructor Detail

### PKCS12ParametersGenerator

    public PKCS12ParametersGenerator(Digest digest)

  Construct a PKCS 12 Parameters generator. This constructor will accept MD5, SHA1, RIPEMD160, and SHA256.

Parameters:
  `digest` - the digest to be used as the source of derived keys.
Throws:
  `java.lang.IllegalArgumentException` - if an unknown digest is passed in.

Method Detail

### generateDerivedParameters

    public CipherParameters generateDerivedParameters(int keySize)

  Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.

  Specified by:
    `generateDerivedParameters` in class `PBEParametersGenerator`
  Parameters:
    `keySize` - the size of the key we want (in bits)
  Returns:
    a KeyParameter object.

### generateDerivedParameters

    public CipherParameters generateDerivedParameters(int keySize,
                                                      int ivSize)

  Generate a key with initialisation vector parameter derived from the password, salt, and iteration count we are currently initialised with.

  Specified by:
    `generateDerivedParameters` in class `PBEParametersGenerator`
  Parameters:
    `keySize` - the size of the key we want (in bits)
    `ivSize` - the size of the iv we want (in bits)
  Returns:
    a ParametersWithIV object.

### generateDerivedMacParameters

    public CipherParameters generateDerivedMacParameters(int keySize)

  Generate a key parameter for use with a MAC derived from the password, salt, and iteration count we are currently initialised with.

  Specified by:
    `generateDerivedMacParameters` in class `PBEParametersGenerator`
  Parameters:
    `keySize` - the size of the key we want (in bits)
  Returns:
    a KeyParameter object.

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