How do I use elliptic curve crytography on android?

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I want to write small demo about cryptography on Android phone. I want to use Elliptic Curve Cryptography (ECC), such as generate public/private key and Sign message (ECDSA) I see Android support some library for ECC, for example java.security.spec or Bouncy Castle. I have no experiment about Android. Please help me about this.

What I have tried:

Generate public/private key
Sign message (ECDSA)
--> using ECC on Android.

Posted 5-Feb-17 21:14pm

Member 10390715

Updated 5-Feb-17 22:36pm

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Richard MacCutchan · Answer 1 · 2017-02-05T22:31:00

Solution 1

See Android Explorations: Using Password-based Encryption on Android[^].

Posted 5-Feb-17 22:31pm

Richard MacCutchan

Darren_vms · Answer 2 · 2017-02-05T22:36:00

Solution 2

At this time I didn't think Curve25519 ECC was included in Android, however take a look at The Android Arsenal - Security - ECC-25519[^] This may fit your needs.

/Darren

Posted 5-Feb-17 22:36pm

Darren_vms

Comments

Member 10390715 7-Feb-17 21:08pm

I found some library as Bouncy Castle and Spongy Castle.
How about this?

Darren_vms 9-Feb-17 9:14am

I believe you can use both.

Member 10390715 28-Feb-17 1:16am

Thanks Darren