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  1. JDK
  2. JDK-8279800

isAssignableFrom checks in AlgorithmParametersSpi.engineGetParameterSpec appear to be backwards

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Details

    • Bug
    • Status: Resolved
    • P3
    • Resolution: Fixed
    • None
    • 19
    • security-libs
    • None
    • b06

    Description

      For example, in sun/security/rsa/PSSParameters.java#L184, it takes the form of

              if (PSSParameterSpec.class.isAssignableFrom(paramSpec)) {
                  return paramSpec.cast(spec);
              } else {
                  throw new InvalidParameterSpecException
                      ("Inappropriate parameter specification");
              }

      but in fact it should be "paramSpec.isAssignableFrom(PSSParameterSpec.class)". isAssignableFrom means is-parent-of and you can only cast an object of a child class to that of a parent class.

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              weijun Weijun Wang
              weijun Weijun Wang
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                Updated:
                Resolved: