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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <script src="../resources/js-test.js"></script> |
| 5 <script src="resources/common.js"></script> |
| 6 <script src="resources/keys.js"></script> |
| 7 </head> |
| 8 <body> |
| 9 <p id="description"></p> |
| 10 <div id="console"></div> |
| 11 |
| 12 <script> |
| 13 description("Decrypting truncated AES-CBC ciphertext should fail"); |
| 14 |
| 15 jsTestIsAsync = true; |
| 16 |
| 17 // 128-bit key with plaintext that is an exact multiple of block size. |
| 18 // Derived from [1] F.2.1 (CBC-AES128.Encrypt), by adding padding block. |
| 19 var iv = hexStringToUint8Array("000102030405060708090a0b0c0d0e0f"); |
| 20 var keyData = hexStringToUint8Array("2b7e151628aed2a6abf7158809cf4f3c"); |
| 21 var cipherText = hexStringToUint8Array("7649abac8119b246cee98e9b12e9197d5086cb9b
507219ee95db113a917678b273bed6b8e3c1743b7116e69e222295163ff1caa1681fac09120eca30
7586e1a78cb82807230e1321d3fae00d18cc2012"); |
| 22 |
| 23 var key = null; |
| 24 var usages = ['encrypt', 'decrypt']; |
| 25 var extractable = false; |
| 26 var algorithm = {name: 'aes-cbc', iv: iv}; |
| 27 |
| 28 function verifyDecryptionFails(newCipherTextLength) |
| 29 { |
| 30 var newCipherText = cipherText.subarray(0, newCipherTextLength); |
| 31 |
| 32 var description = "ciphertext length: " + newCipherText.byteLength; |
| 33 return crypto.subtle.decrypt(algorithm, key, newCipherText).then(function(re
sult) { |
| 34 debug("FAIL: decrypting succeeded. " + description); |
| 35 }, function(result) { |
| 36 debug("PASS: decrypting failed. " + description); |
| 37 }); |
| 38 } |
| 39 |
| 40 crypto.subtle.importKey('raw', keyData, algorithm, extractable, usages).then(fun
ction(result) { |
| 41 key = result; |
| 42 |
| 43 // Verify that decryption works with the original ciphertext. |
| 44 return crypto.subtle.decrypt(algorithm, key, cipherText); |
| 45 }).then(function(result) { |
| 46 debug("PASS: Decryption succeeded"); |
| 47 |
| 48 // Try a number of bad ciphertexts. |
| 49 var badLengths = [ |
| 50 0, |
| 51 cipherText.byteLength - 1, |
| 52 |
| 53 // Stripped a whole block. This new final block will result in a |
| 54 // padding error. |
| 55 cipherText.byteLength - 16, |
| 56 1, |
| 57 15, |
| 58 16, |
| 59 17 |
| 60 ]; |
| 61 |
| 62 var lastPromise = Promise.resolve(null); |
| 63 badLengths.forEach(function(badLength) { |
| 64 lastPromise = lastPromise.then(verifyDecryptionFails.bind(null, badLengt
h)); |
| 65 }); |
| 66 return lastPromise; |
| 67 }).then(finishJSTest, failAndFinishJSTest); |
| 68 |
| 69 </script> |
| 70 |
| 71 </body> |
| 72 </html> |
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Chromium Code Reviews
Issue 206483010:
[webcrypto] Refactor some layout tests. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk