Android Q bouncy castle issue

Question

From API level 28, Google has restricted Security provider feature(bouncy castle issue). So alternatively we have added Security provider using spongy castle Now we can able to generate a keypair. But the key pair is not matching with the previous one. We can't get Private keyThis is we used previously, Old codeapi 27:

KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC", "BC");
SecureRandom random =SecureRandom.getInstance("SHA1PRNG");
keyGen.initialize(256, random);KeyFactory kaif = KeyFactory.getInstance("EC", "BC");
KeyPair pair = keyGen.generateKeyPair();
PrivateKey privateKey = pair.getPrivate();
PublicKey publicKey = pair.getPublic();

After the API level issue, we have removed "BC" and added Bouncy Castle manually by adding the below lineSecurity.insertProviderAt(BouncyCastleProvider(), 1); by implementing Bouncy castle in dependencies, implementation "com.madgag.spongycastle:core:1.58.0.0" implementation "com.madgag.spongycastle:prov:1.58.0.0" But the key pair is not matching with the previous one. New Code:api 28

Security.insertProviderAt(new org.spongycastle.jce.provider.BouncyCastleProvider(), 1);
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
keyGen.initialize(256, random);
KeyFactory kaif = KeyFactory.getInstance("EC");
KeyPair pair = keyGen.generateKeyPair();
PrivateKey privateKey = pair.getPrivate();
PublicKey publicKey = pair.getPublic();

But the key pair is not matching with the previous one.

Image:

Answer 1

try insert new BouncyCastleProvider() on the first row of your security provider and remove all setprovider("BC") from your code.