hi ! Has anyone interfaced `Apple CryptoKit` into...

# multiplatform

[Ahmed na]

hi !

Has anyone interfaced Apple CryptoKit into a kmp library ?

My research lead me to how to use swift only code in kmp,
Looking for already packaged lib 😄

[Jan Holešovský]

What do you want to achieve? If you are just searching for something, you'd be better off googling or asking chatgpt; if you want to solve a problem, describe the problem 😉

[Ahmed na]

I'm want to use X448 and X25519 encryption in my kotlin commode module

these alg are offered by Apple CryptoKit for ios

But It's a known problem with kmp
that we can't use swift only libraries in kotlin

The workarounds i found :
https://dev.to/ttypic/going-swiftly-using-a-swift-only-libraries-in-your-kotlin-multiplatform-app-1ml9

https://github.com/KodeinKoders/playground-SwiftLib-in-KMMLib

Before i try using these i'm looking for an open source library that already implemented this and exposed Apple CryptoKit to kmp common code

[Jan Holešovský]

If your main concern are these two algorithms, then maybe using openssl would be a viable alternative for you? Integrating BoringSSL (a fork of OpenSSL - https://boringssl.googlesource.com/boringssl/) into KMP is reasonably easy, can post some pointers here if you are interested.

[Ahmed na]

yeah if i can import this library into a kmp module (common or ios target) would be great

would appreciate any snippets !

[Jan Holešovský]

@Ahmed na I'm using the BoringSSL in https://github.com/kendy/Kotlin-Native-BigDecimal . To build BoringSSL, here are my notes: https://github.com/kendy/Kotlin-Native-BigDecimal/blob/master/bignum/README.md To actually import it then into your project using cinterops, see https://github.com/kendy/Kotlin-Native-BigDecimal/blob/master/build.gradle.kts Then when you want to actually use that, see https://github.com/kendy/Kotlin-Native-BigDecimal/blob/master/src/iosMain/kotlin/kendy/math/NativeBN.kt where I call the BoringSSL API