cryptography - java.lang.IllegalArgumentException: string curve25519 not an OID bouncycastle 1.52 -


i'm trying generate key pair using /java bouncy castle 1.52 implementation curve 25519 gives me

java.lang.illegalargumentexception: string curve25519 not oid

here code:

public keypair generatekeys() throws nosuchalgorithmexception,         nosuchproviderexception, invalidalgorithmparameterexception {     ecparameterspec ecspec = ecnamedcurvetable.getparameterspec("curve25519");     keypairgenerator g = keypairgenerator.getinstance("ecdsa", "bc");     g.initialize(ecspec, new securerandom());      return g.generatekeypair(); }

the result of code stacktrace below:

java.lang.illegalargumentexception: string curve25519 not oid @ org.bouncycastle.asn1.asn1objectidentifier.(unknown source) @ org.bouncycastle.jcajce.provider.asymmetric.ec.bcecpublickey.getencoded(unknown source) @ org.bouncycastle.jcajce.provider.asymmetric.ec.bcecprivatekey.getpublickeydetails(unknown source) @ org.bouncycastle.jcajce.provider.asymmetric.ec.bcecprivatekey.(unknown source) @ org.bouncycastle.jcajce.provider.asymmetric.ec.keypairgeneratorspi$ec.generatekeypair(unknown source) @ com.poc.databank.encryption.bouncycastleencryption.generatekeys(bouncycastleencryption.java:22) @ com.poc.databank.encryption.bouncycastletest.testapp(bouncycastletest.java:16) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) @ java.lang.reflect.method.invoke(method.java:606) @ org.junit.runners.model.frameworkmethod$1.runreflectivecall(frameworkmethod.java:47) @ org.junit.internal.runners.model.reflectivecallable.run(reflectivecallable.java:12) @ org.junit.runners.model.frameworkmethod.invokeexplosively(frameworkmethod.java:44) @ org.junit.internal.runners.statements.invokemethod.evaluate(invokemethod.java:17) @ org.junit.runners.parentrunner.runleaf(parentrunner.java:271) @ org.junit.runners.blockjunit4classrunner.runchild(blockjunit4classrunner.java:70) @ org.junit.runners.blockjunit4classrunner.runchild(blockjunit4classrunner.java:50) @ org.junit.runners.parentrunner$3.run(parentrunner.java:238) @ org.junit.runners.parentrunner$1.schedule(parentrunner.java:63) @ org.junit.runners.parentrunner.runchildren(parentrunner.java:236) @ org.junit.runners.parentrunner.access$000(parentrunner.java:53) @ org.junit.runners.parentrunner$2.evaluate(parentrunner.java:229) @ org.junit.runners.parentrunner.run(parentrunner.java:309) @ org.eclipse.jdt.internal.junit4.runner.junit4testreference.run(junit4testreference.java:50) @ org.eclipse.jdt.internal.junit.runner.testexecution.run(testexecution.java:38) @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:467) @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:683) @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.run(remotetestrunner.java:390) @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.main(remotetestrunner.java:197)

i checked bouncy castle code , figured out curve25519 registered in customnamedcurves class 

definecurve("curve25519", curve25519);

but not 

definecurvewithoid("secp192k1", secobjectidentifiers.secp192k1,             secp192k1);

i understand there should reason this. please me found out way how can generate key pair uising curve25519.

you need curve parameters in x9.62 format , convert them jce format

x9ecparameters ecp = customnamedcurves.getbyname("curve25519"); ecparameterspec ecspec=new ecparameterspec(ecp.getcurve(), ecp.getg(),         ecp.getn(), ecp.geth(), ecp.getseed());

then produce ecdsa key normal

provider bcprovider = new bouncycastleprovider(); keypairgenerator g = keypairgenerator.getinstance("ecdsa", bcprovider); g.initialize(ecspec, new securerandom()); keypair keypair = g.generatekeypair(); assert.assertnotnull(keypair);

i believe curve25519 has no object identifier assigned it. doesn't excuse inability find curve name.


Comments

Post a Comment

Popular posts from this blog

java - Spring Data JPA: Why findOne(id) executing delete query internally? -

i have 1 application using @manytomany annotation link 2 different entities 1 parent entity. not sure if have implemented properly. when execute .findone() on parent entity's repository find it, @ first fetch data along executing delete queries internally delete record mapping table (a table jpa creates after adding @manytomany annotation.). following generated sql queries , code snippet: java class @entity @table(name = "inventory") public class inventory { @id long id; // many other properties @manytomany(fetch=fetchtype.lazy) private list<stream> streams; @manytomany(fetch=fetchtype.lazy) private list<subject> subjects; } there no other annotation i've put in stream , subject entity class link inventory class. when run app, create following tables: inventory stream subject inventory_stream inventory_subject (inventory_stream , inventory_subject, 2 tables created automatically, don't k...
Read more

python - Mongodb How to add addtional information when aggregating? -

i beginner , wrote line pipeline works, wanna add other information output, screen name , or number of tweets.i tried add under $group gave me syntax error everytime here pipeline: def make_pipeline(): # complete aggregation pipeline pipeline = [ { '$match': { "user.statuses_count": {"$gt":99 }, "user.time_zone": "brasilia" } }, { "$group": { "_id": "$user.id", "followers": { "$max": "$user.followers_count" } } }, { "$sort": { "followers": -1 } }, { "$limit" : 1 } ]; i using on example : { "_id" : objectid("5304e2e3cc9e684aa98bef97"), "text" : "first week of school on :p", "in_reply_to_status_id" : null, "retweet_count" : null, ...
Read more

java - Incorrect order of records in M-M relationship in hibernate -

Image
i have 4 records in bridge table in mysql database. using @manytomany in hibernate, accurate order of employees incorrect incorrect of projects. following required material figure out doing mistake. this source. @entity @table(name="project") public class projectbean { @id @generatedvalue @column(name="project_id") private int projectid; @column(name="title") private string projecttitle; @manytomany(mappedby="projects") private collection<employeebean> employees; public projectbean() { employees = new arraylist<employeebean>(); } //getters & setters } @entity @table(name="employee") public class employeebean { @id @generatedvalue @column(name="employee_id") private int employee_id; @column(name="first_name") private string ...
Read more