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1 <!DOCTYPE html> | |
2 <html> | |
3 <head> | |
4 <script src="../../resources/js-test.js"></script> | |
5 <script src="resources/common.js"></script> | |
6 </head> | |
7 <body> | |
8 <p id="description"></p> | |
9 <div id="console"></div> | |
10 | |
11 <script> | |
12 description("Test bad inputs to HKDF deriveBits()"); | |
13 | |
14 jsTestIsAsync = true; | |
15 | |
16 kHkdfKey = "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"; | |
17 | |
18 var extractable = true; | |
19 Promise.resolve(null).then(function(result) { | |
20 // Set up the test by creating an HKDF key... | |
21 return crypto.subtle.importKey("raw", hexStringToUint8Array(kHkdfKey), {name
: "HKDF"}, extractable, ['deriveKey', 'deriveBits']); | |
22 }).then(function(result) { | |
23 hkdfKey = result; | |
24 | |
25 // ... and an ECDH key. | |
26 return crypto.subtle.generateKey({name: "ECDH", namedCurve: "P-256"}, true,
['deriveBits']); | |
27 }).then(function(result) { | |
28 ecdhKey = result; | |
29 | |
30 // Should throw a NotSupportedError if hash does not describe a recognized | |
31 // algorithm that supports the digest operation. | |
32 debug("\nderiveBits() with an unsupported hash..."); | |
33 return crypto.subtle.deriveBits({name: "HKDF", hash: "HMAC", salt: new Uint8
Array(), info: new Uint8Array()}, hkdfKey, 8); | |
34 }).then(failAndFinishJSTest, function(result) { | |
35 logError(result); | |
36 | |
37 // Should throw an InvalidAccessError if key doesn't match the algorithm | |
38 debug("\nderiveBits() with an ECDH key..."); | |
39 return crypto.subtle.deriveBits({name: "HKDF", hash: "SHA-256", salt: new Ui
nt8Array(), info: new Uint8Array()}, ecdhKey.privateKey, 8); | |
40 }).then(failAndFinishJSTest, function(result) { | |
41 logError(result); | |
42 | |
43 // Should throw an OperationError if the key derivation operation | |
44 // fails. The key derivation operation will fail here because the length | |
45 // is too long. | |
46 // | |
47 // The maximum length (in bytes) of output material for HKDF is 255 times | |
48 // the digest length. In this case, the digest length (in bytes) of | |
49 // SHA-256 is 32; 32*255 = 8160. deriveBits expects the length to be in | |
50 // bits, so 8160*8=65280 and add 1 to exceed the maximum length. | |
51 debug("\nderiveBits() with length of 65281..."); | |
52 return crypto.subtle.deriveBits({name: "HKDF", hash: "SHA-256", salt: new Ui
nt8Array(), info: new Uint8Array()}, hkdfKey, 65281); | |
53 }).then(failAndFinishJSTest, function(result) { | |
54 logError(result); | |
55 }).then(finishJSTest, failAndFinishJSTest); | |
56 | |
57 </script> | |
58 | |
59 </body> | |
60 </html> | |
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