# Re: Is this a bug? Undocumented Interface?

Sharon Liu (Sharon.Liu@eng.sun.com)
Thu, 19 Aug 1999 09:15:53 -0700 (PDT)

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    Message-Id: <199908191616.JAA07937@shorter.eng.sun.com>

    Date: Thu, 19 Aug 1999 09:15:53 -0700 (PDT)

    From: Sharon Liu <Sharon.Liu@eng.sun.com>

    Subject: Re: Is this a bug? Undocumented Interface?

    To: java-security@java.sun.com, daniel.fisla@utoronto.ca

Daniel,

There is no interface or class called SecretKey (or Cipher) in the
java.security package.

You may want to clean up your environment and try again.

Thanks,
Sharon

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> To: java-security@java.sun.com
> Subject: Is this a bug? Undocumented Interface?
> Content-Transfer-Encoding: 7bit
>
> I tried to compile the Diffy-Hellman example for key exchange between 2
> parties that comes with the
> jce 1.2 .
>
>
>
> This is what I get: (Discussion follows after the error listing)
>
--------------------------------------------------------------------------------
-------
>
>
>
>
> DHKeyAgreement2.java:207: Ambiguous class: java.security.SecretKey and
> javax.crypto.SecretKey
> SecretKey bobDesKey = bobKeyAgree.generateSecret("DES");
>
> DHKeyAgreement2.java:211: Ambiguous class: java.security.SecretKey and
> javax.crypto.SecretKey
> SecretKey aliceDesKey = aliceKeyAgree.generateSecret("DES");
>
> DHKeyAgreement2.java:216: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> Cipher bobCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
>
> DHKeyAgreement2.java:216: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> Cipher bobCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
>
> DHKeyAgreement2.java:225: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> Cipher aliceCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
>
>
>
> DHKeyAgreement2.java:225: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> Cipher aliceCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
>
>
>
> DHKeyAgreement2.java:236: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> bobCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
>
> DHKeyAgreement2.java:252: Ambiguous class: java.security.Cipher and
> javax.crypto.Cipher
> aliceCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
>
> 8 errors
>
--------------------------------------------------------------------------------
--------------
>
> Now the weird things is, according to the java api docs, there is no
> SecretKey interface or class in
> java.security package.
>
> The reason it is saying "Ambiguous class" is because there are
> interfaces by the same name in
> 2 different places/packages.
>
> I know the solution for this is to use absolute package names, ie.
> java.security.SecretKey or
> javax.crypto.SecretKey. Being interface it probably does not matter
> which one I'll use, but what I
> found strange that this is not documented, and how do I know if the two
> interfaces are the same or
> different. I guess I can just try which one will compile fine. :)
>
> My Java docs:
> Java 2 Platform, Standard Edition, version 1.2.2.
>
> My JDK:
> Java 2 Platform, Standard Edition, version 1.2.2.
>
>
> Regards,
>
> Daniel.
>
>
>

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