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feat: replace libsodium with pure Kotlin ChaCha20/Poly1305 implementation

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Remove LazySodium/JNA/libsodium native dependencies and replace with
pure Kotlin implementations of ChaCha20, HChaCha20, XChaCha20,
Poly1305 MAC, and XChaCha20-Poly1305 AEAD. This eliminates platform-
specific native binaries while maintaining full NIP-44 compatibility.

- Add ChaCha20Core with RFC 8439 block function, IETF stream XOR,
  HChaCha20, and XChaCha20
- Add Poly1305 MAC (RFC 8439 §2.5)
- Add XChaCha20Poly1305 AEAD encrypt/decrypt
- Convert LibSodiumInstance from expect/actual to commonMain object
- Delete platform-specific LibSodiumInstance actuals (android/jvm/ios)
- Remove iOS native interop (cinterop, linker opts, .a libraries)
- Remove lazysodium-java, lazysodium-android, JNA from build deps
- Clean up ProGuard rules (remove JNA/LazySodium keep rules)
- Add RFC 8439 + libsodium test vectors for ChaCha20 and XChaCha20
- Update benchmark to use simplified ChaCha20 API

https://claude.ai/code/session_01YHBwqnb3Z7Q7PX31tJ2G3i
This commit is contained in:
Claude
2026-03-23 17:40:29 +00:00
parent bbb75afed9
commit d586a0dc25
15 changed files with 1031 additions and 558 deletions
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quartz/consumer-rules.pro
-22
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@@ -16,32 +16,10 @@
# preserve access to native classses
-keep class fr.acinq.secp256k1.** { *; }
# JNA For Libsodium
-keep class com.goterl.lazysodium.** { *; }
# libscrypt
-keep class com.lambdaworks.codec.** { *; }
-keep class com.lambdaworks.crypto.** { *; }
-keep class com.lambdaworks.jni.** { *; }
# JNA also requires AWT, which Android does not have. So the classes are broken down to filter AWT out
-keep class com.sun.jna.ToNativeConverter { *; }
-keep class com.sun.jna.NativeMapped { *; }
-keep class com.sun.jna.CallbackReference { *; }
-keep class com.sun.jna.ptr.IntByReference { *; }
-keep class com.sun.jna.NativeLong { *; }
-keep class com.sun.jna.Structure { *; }
-keep class com.sun.jna.Structure$* { *; }
-keep class com.sun.jna.Native$ffi_callback { *; }
-keep class * implements com.sun.jna.Structure$* { *; }
-keep class * implements com.sun.jna.Native$* { *; }
-keep class com.sun.jna.Native {
private static com.sun.jna.NativeMapped fromNative(java.lang.Class, java.lang.Object);
private static com.sun.jna.NativeMapped fromNative(java.lang.reflect.Method, java.lang.Object);
private static java.lang.Class nativeType(java.lang.Class);
private static java.lang.Object toNative(com.sun.jna.ToNativeConverter, java.lang.Object);
private static java.lang.Object fromNative(com.sun.jna.FromNativeConverter, java.lang.Object, java.lang.reflect.Method);
}
# JSON parsing
-keep class com.vitorpamplona.quartz.** { *; }