fix: Decoding base64 keys

Author: simonas-notcat

packages/daf-react-native-libsodium/src/key-management-system.ts

@@ -60,12 +60,12 @@ export class KeyManagementSystem extends AbstractKeyManagementSystem {
     switch (type) {
       case 'Ed25519':
         await sodium.ready
-        const keyPairEd25519 = await sodium.crypto_sign_keypair()
+        const keyPairEd25519 = (await sodium.crypto_sign_keypair()) as any
         serializedKey = {
           type,
-          kid: Buffer.from(keyPairEd25519.publicKey).toString('hex'),
-          publicKeyHex: Buffer.from(keyPairEd25519.publicKey).toString('hex'),
-          privateKeyHex: Buffer.from(keyPairEd25519.privateKey).toString('hex'),
+          kid: Buffer.from(keyPairEd25519.sk, 'base64').toString('hex'),
+          publicKeyHex: Buffer.from(keyPairEd25519.pk, 'base64').toString('hex'),
+          privateKeyHex: Buffer.from(keyPairEd25519.pk, 'base64').toString('hex'),
         }
         break
       case 'Secp256k1':