Package org.bouncycastle.jcajce.provider.asymmetric.util

Class DSABase

java.lang.Object
java.security.SignatureSpi
org.bouncycastle.jcajce.provider.asymmetric.util.DSABase
All Implemented Interfaces:
PKCSObjectIdentifiers, X509ObjectIdentifiers
Direct Known Subclasses:
SignatureSpi
public abstract class DSABase
extends SignatureSpi
implements PKCSObjectIdentifiers, X509ObjectIdentifiers

  • Field Details

    • digest

      protected Digest digest

    • signer

      protected DSA signer

    • encoder

      protected DSAEncoder encoder

  • Constructor Details

  • Method Details

    • engineUpdate

      protected void engineUpdate​(byte b) throws SignatureException
      Description copied from class: SignatureSpi
      Updates the data to be verified or to be signed, using the specified byte.
      Specified by:
      engineUpdate in class SignatureSpi
      Parameters:
      b - the byte to update with.
      Throws:
      SignatureException - if this SignatureSpi instance is not initialized properly.

    • engineUpdate

      protected void engineUpdate​(byte[] b, int off, int len) throws SignatureException
      Description copied from class: SignatureSpi
      Updates the data to be verified or to be signed, using the given byte[], starting form the specified index for the specified length.
      Specified by:
      engineUpdate in class SignatureSpi
      Parameters:
      b - the byte array to update with.
      off - the start index in b of the data.
      len - the number of bytes to use.
      Throws:
      SignatureException - if this SignatureSpi instance is not initialized properly.

    • engineSign

      protected byte[] engineSign() throws SignatureException
      Description copied from class: SignatureSpi
      Generates and returns the signature of all updated data.

      This SignatureSpi instance is reset to the state of its last initialization for signing and thus can be used for another signature from the same identity.

      Specified by:
      engineSign in class SignatureSpi
      Returns:
      the signature of all updated data.
      Throws:
      SignatureException - if this SignatureSpi instance is not initialized properly.

    • engineVerify

      protected boolean engineVerify​(byte[] sigBytes) throws SignatureException
      Description copied from class: SignatureSpi
      Indicates whether the given sigBytes can be verified using the public key or a certificate of the signer.

      This SignatureSpi instance is reset to the state of its last initialization for verifying and thus can be used to verify another signature of the same signer.

      Specified by:
      engineVerify in class SignatureSpi
      Parameters:
      sigBytes - the signature to verify.
      Returns:
      true if the signature was verified, false otherwise.
      Throws:
      SignatureException - if this SignatureSpi instance is not initialized properly.

    • engineSetParameter

      protected void engineSetParameter​(AlgorithmParameterSpec params)
      Description copied from class: SignatureSpi
      Sets the specified AlgorithmParameterSpec.
      Overrides:
      engineSetParameter in class SignatureSpi
      Parameters:
      params - the parameter to set.

    • engineSetParameter

      protected void engineSetParameter​(String param, Object value)
      Deprecated.
      replaced with
      Description copied from class: SignatureSpi
      Sets the specified parameter to the given value.
      Specified by:
      engineSetParameter in class SignatureSpi
      Parameters:
      param - the name of the parameter.
      value - the parameter value.

    • engineGetParameter

      protected Object engineGetParameter​(String param)
      Deprecated.
      Description copied from class: SignatureSpi
      Returns the value of the parameter with the specified name.
      Specified by:
      engineGetParameter in class SignatureSpi
      Parameters:
      param - the name of the requested parameter value.
      Returns:
      the value of the parameter with the specified name, maybe null.