8237219: Disabling the native SunEC implementation

Weijun Wang weijun.wang at oracle.com
Tue Mar 10 03:35:12 UTC 2020


- isJavaSupported() has a strange name

- Is it better to put the javaSupportedCurves somewhere near fields and orderFields in ECOperations.java? Thus we can update it simultaneously in the future. Or at least add a comment somewhere?


- Is it possible to implement the Java part of isSupported() based on ECParameterSpec instead of its getEncoded() form?


- Do we need to enable native for the "SunEC EC 256" case?


- I would suggest updating "kpg.initialize(192)" to use 256 and "kpg.initialize(571)" to use 521 instead of enabling the native lib


- I still don't like always enabling native and would rather only enable it when required (Ex: in test/jdk/sun/security/tools/keytool/GroupName.java). I'm now running a mach5 job to see how much impact it has.

Otherwise fine to me.


> On Mar 7, 2020, at 4:04 AM, Anthony Scarpino <anthony.scarpino at oracle.com> wrote:
> Webrev is updated and the CSR is updated with a comment if the property is false.
> https://cr.openjdk.java.net/~ascarpino/8237219/webrev.02
> thanks
> Tony
> On 3/2/20 4:40 PM, Anthony Scarpino wrote:
>> Hi
>> I need a review of the CSR and webrev for disabling by default the native SunEC curves from the API.  With the recent verification changes in JDK-8237218, SunJCE is long dependent on the native code for verifying the constant-time curves.  This disabling can be undone with setting a  system property, jdk.sunec.disableNative.  I'm doing a simultaneous review as changes for one  will likely affect the other.
>> CSR: https://bugs.openjdk.java.net/browse/JDK-8238911
>> webrev: https://cr.openjdk.java.net/~ascarpino/8237219/
>> The curves affected are:
>> secp112r1, secp112r2, secp128r1, secp128r2, secp160k1, secp160r1, secp160r2, secp192k1, secp192r1, secp224k1, secp224r1, secp256k1, sect113r1, sect113r2, sect131r1, sect131r2, sect163k1, sect163r1, sect163r2, sect193r1, sect193r2, sect233k1, sect233r1, sect239k1, sect283k1, sect283r1, sect409k1, sect409r1, sect571k1, sect571r1, X9.62 c2tnb191v1, X9.62 c2tnb191v2, X9.62 c2tnb191v3, X9.62 c2tnb239v1, X9.62 c2tnb239v2, X9.62 c2tnb239v3, X9.62 c2tnb359v1, X9.62 c2tnb431r1, X9.62 prime192v2, X9.62 prime192v3, X9.62 prime239v1, X9.62 prime239v2, X9.62 prime239v3, brainpoolP256r1 brainpoolP320r1, brainpoolP384r1, brainpoolP512r1
>> Tony

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