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Add unit tests for EciesWithAwsKmsSavedKey #379

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Add unit tests for EciesWithAwsKmsSavedKey #379

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19 changes: 19 additions & 0 deletions ...src/test/java/de/dominikschadow/javasecurity/tink/hybrid/EciesWithAwsKmsSavedKeyTest.java
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Expand Up @@ -259,4 +259,23 @@ void decryptWithPublicKeyThrowsException() throws Exception {
ecies.decrypt(testPublicKeysetHandle, cipherText, CONTEXT_INFO)
);
}

@Test
void generateAndStorePublicKeyWritesPublicKeysetNotPrivateKeyset() throws Exception {
File keysetFile = new File(tempDir, "public-keyset-verification.json");
assertFalse(keysetFile.exists());

ecies.generateAndStorePublicKey(testPrivateKeysetHandle, keysetFile);

KeysetHandle loadedKeyset = ecies.loadPublicKey(keysetFile);

// The stored keyset must be a public keyset: it can encrypt but NOT decrypt.
// If the private keyset were written instead, decryption would succeed.
byte[] cipherText = ecies.encrypt(loadedKeyset, INITIAL_TEXT, CONTEXT_INFO);

assertThrows(GeneralSecurityException.class, () ->
ecies.decrypt(loadedKeyset, cipherText, CONTEXT_INFO),
"Loaded keyset must be public-only: decryption must fail"
);
}
}