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LibWeb: Integration test for WebCrypto AES-CBC
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Ben Wiederhake 2024-10-26 04:41:19 +02:00 committed by Andreas Kling
parent b1056121f2
commit ff3d78f369
Notes: github-actions[bot] 2024-10-26 15:51:14 +00:00 
Author: https://github.com/BenWiederhake
Commit: https://github.com/LadybirdBrowser/ladybird/commit/ff3d78f369d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1971
2 changed files with 57 additions and 0 deletions
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5
Tests/LibWeb/Text/expected/Crypto/SubtleCrypto-aescbc.txt Normal file
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exported key: 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47
ciphertext: 193,138,47,224,83,254,87,179,130,27,206,126,144,28,38,111,123,45,177,85,53,201,206,231,38,234,7,146,184,159,64,117,220,3,201,210,82,171,14,237,82,53,162,239,16,172,50,72
plaintextRoundtrip: 87,101,108,108,72,101,108,108,111,70,114,105,101,110,100,115,16,16,16,16,16,16,255,16,16,16,16,16,16,16,16,16
odd padding results in: OperationError
broken padding results in: OperationError

52
Tests/LibWeb/Text/input/Crypto/SubtleCrypto-aescbc.html Normal file
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<!DOCTYPE html>
<script src="../include.js"></script>
<script>
asyncTest(async (done) => {
var key = new Uint8Array([0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f]);
var iv = new Uint8Array([0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f]);
var plaintextEvil = new Uint8Array([
0x57, 0x65, 0x6c, 0x6c, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x46, 0x72, 0x69, 0x65, 0x6e, 0x64, 0x73, /* "WellHelloFriends" */
0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0xFF, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, /* Fake (broken) padding */
]);
var aesAlgorithmKeyGen = { name: "AES-CBC", length: 128 };
var aesAlgorithmEncryptDecrypt = { name: "AES-CBC", iv };
// Test "importKey" operation:
var aesKey = await window.crypto.subtle.importKey("raw", key, aesAlgorithmKeyGen, true, ["encrypt", "decrypt"]);
// Test "exportKey" operation:
println("exported key: " + new Uint8Array(await window.crypto.subtle.exportKey("raw", aesKey)));
// Test "encrypt" operation. Note, this is an edge case where CMS causes the ciphertext to be 16 bytes *longer* than the plaintext!
var ciphertext = new Uint8Array(await window.crypto.subtle.encrypt(aesAlgorithmEncryptDecrypt, aesKey, plaintextEvil));
println("ciphertext: " + ciphertext.toString());
// Test "decrypt" operation:
var plaintextRoundtrip = new Uint8Array(await window.crypto.subtle.decrypt(aesAlgorithmEncryptDecrypt, aesKey, ciphertext));
println("plaintextRoundtrip: " + plaintextRoundtrip.toString());
// Test "decrypt" operation with odd ciphertext:
var ciphertextOddError = await window.crypto.subtle.decrypt(aesAlgorithmEncryptDecrypt, aesKey, new Uint8Array([0x05, 0x06, 0x07, 0x08, 0x09]))
.then(
() => { return "decode with odd padding succeeded?!"; },
(err) => { return "odd padding results in: " + err.name; }
);
println(ciphertextOddError);
// Test "decrypt" operation with invalid padding. The invalid padding was originally injected as part of the plaintext, and is only visible now due to the truncation:
var ciphertextEvil = new Uint8Array([193, 138, 47, 224, 83, 254, 87, 179, 130, 27, 206, 126, 144, 28, 38, 111, 123, 45, 177, 85, 53, 201, 206, 231, 38, 234, 7, 146, 184, 159, 64, 117]);
var ciphertextEvilError = await window.crypto.subtle.decrypt(aesAlgorithmEncryptDecrypt, aesKey, ciphertextEvil)
.then(
() => { return "decode with broken padding succeeded?!"; },
(err) => { return "broken padding results in: " + err.name; }
);
println(ciphertextEvilError);
// This test isn't meant to be exhaustive, but to cover the most fundamental use cases and the "sharpest" edge cases.
// For a more detailed analysis, try the following WPT pages:
// - WebCryptoAPI/encrypt_decrypt/aes_cbc.https.any
// - WebCryptoAPI/generateKey/successes_AES-CBC.https.any
// - WebCryptoAPI/import_export/symmetric_importKey.https.any
done();
});
</script>