Derived certificate from private key in iOS(Objective-C)

Question

I am able to generate ECC key pair on iOS (Objective-C). Now I want to derive certificate from the generated private key? In android normally we do:

• initialize KeyStore, KeyPairGenerator
• generate key pair with identifier (later retrieve with the identifier)
• retrieve entry from keystore by identifier KeyStore.Entry entry = ks.getEntry(identifier, null);
• get private key by calling ((KeyStore.PrivateKeyEntry) entry).getPrivateKey()
• get certificate by calling ks.getCertificate(identifier)
• derived public key from certificate by calling ks.getCertificate(keyHandle).getPublicKey()

How can I export certificate in iOS?

Answer 1

I found some link regarding ECC encryption in iOS hope this will helps you to head into it.

• Github link for ECC encryption

• Some SO links How to use ECC in iOS

  Elliptic Curve Crypto in iOS

  http://pastebin.com/3JBbzpX6

Extra Link for ECC

https://digitalleaves.com/blog/2015/10/sharing-public-keys-between-ios-and-the-rest-of-the-world/

Hope this will helps you.

Happy coding.