Package org.conscrypt

Class OpenSSLSignature

java.lang.Object
java.security.SignatureSpi
java.security.Signature
org.conscrypt.OpenSSLSignature
Direct Known Subclasses:
OpenSSLSignature.MD5RSA, OpenSSLSignature.SHA1DSA, OpenSSLSignature.SHA1ECDSA, OpenSSLSignature.SHA1RSA, OpenSSLSignature.SHA256ECDSA, OpenSSLSignature.SHA256RSA, OpenSSLSignature.SHA384ECDSA, OpenSSLSignature.SHA384RSA, OpenSSLSignature.SHA512ECDSA, OpenSSLSignature.SHA512RSA
public class OpenSSLSignature
extends Signature
Implements the subset of the JDK Signature interface needed for signature verification using OpenSSL.

  • Method Details

    • engineUpdate

      protected void engineUpdate​(byte input)
      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:
      input - the byte to update with.

    • engineUpdate

      protected void engineUpdate​(byte[] input, int offset, int len)
      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:
      input - the byte array to update with.
      offset - the start index in b of the data.
      len - the number of bytes to use.

    • engineGetParameter

      protected Object engineGetParameter​(String param) throws InvalidParameterException
      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.
      Throws:
      InvalidParameterException - if param is not a valid parameter for this SignatureSpi or an other error occurs.

    • engineInitSign

      protected void engineInitSign​(PrivateKey privateKey) throws InvalidKeyException
      Description copied from class: SignatureSpi
      Initializes this SignatureSpi instance for signing, using the private key of the identity whose signature is going to be generated.
      Specified by:
      engineInitSign in class SignatureSpi
      Parameters:
      privateKey - the private key.
      Throws:
      InvalidKeyException - if privateKey is not valid.

    • engineInitVerify

      protected void engineInitVerify​(PublicKey publicKey) throws InvalidKeyException
      Description copied from class: SignatureSpi
      Initializes this SignatureSpi instance for signature verification, using the public key of the identity whose signature is going to be verified.
      Specified by:
      engineInitVerify in class SignatureSpi
      Parameters:
      publicKey - the public key.
      Throws:
      InvalidKeyException - if publicKey is not valid.

    • engineSetParameter

      protected void engineSetParameter​(String param, Object value) throws InvalidParameterException
      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.
      Throws:
      InvalidParameterException - if the parameter is invalid, already set or is not allowed to be changed.

    • 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.

    • finalize

      protected void finalize() throws Throwable
      Description copied from class: Object
      Invoked when the garbage collector has detected that this instance is no longer reachable. The default implementation does nothing, but this method can be overridden to free resources.

      Note that objects that override finalize are significantly more expensive than objects that don't. Finalizers may be run a long time after the object is no longer reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup. Note also that finalizers are run on a single VM-wide finalizer thread, so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary for a class that has a native peer and needs to call a native method to destroy that peer. Even then, it's better to provide an explicit close method (and implement Closeable), and insist that callers manually dispose of instances. This works well for something like files, but less well for something like a BigInteger where typical calling code would have to deal with lots of temporaries. Unfortunately, code that creates lots of temporaries is the worst kind of code from the point of view of the single finalizer thread.

      If you must use finalizers, consider at least providing your own ReferenceQueue and having your own thread process that queue.

      Unlike constructors, finalizers are not automatically chained. You are responsible for calling super.finalize() yourself.

      Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.

      Overrides:
      finalize in class Object
      Throws:
      Throwable