UnimplementedError: Ecdh.p256(length: 32).newKeyPair() on on Android #170

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1. phillippbertram commented on May 7, 2024

   

   phillippbertram

   on May 7, 2024

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   I have the same issue.

   It seems that the CryptographyFlutterPlugin.kt should support ECDH algorithms:

   cryptography/cryptography_flutter/android/src/main/kotlin/dev/dint/cryptography_flutter/CryptographyFlutterPlugin.kt

   Line 56 in 4ba46dc

   "Ecdh.newKeyPair" -> ecNewKeyPair(call, result)

   After some debugging, I found that the the isSupportedPlatform in flutter_ecdh.dart returns false if the current platform is not a Cupertino device.

     @override
     bool get isSupportedPlatform =>
         FlutterCryptography.isPluginPresent && isCupertino;

   Maybe an easy fix would be to remove the && isCupertino statement? 🤷
2. joaquingrech commented on Aug 6, 2025

   

   joaquingrech

   on Aug 6, 2025

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   This bug also happens on windows build, it seems it is forced to ios and android, leaving out all other platforms although they should be supported