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only access window.crypto.webkitSubtle in fallback

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This commit is contained in:
Bart Butler 2018-02-15 15:34:32 -08:00
parent 79d2e9d6bf
commit 3c2871a0e4
1 changed files with 16 additions and 12 deletions
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28
src/crypto/public_key/rsa.js
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@ -146,18 +146,7 @@ export default function RSA() {
let keyGenOpt;
let keys;
if (window.crypto && window.crypto.webkitSubtle) {
// outdated spec implemented by Webkit
keyGenOpt = {
name: 'RSA-OAEP',
modulusLength: B, // the specified keysize in bits
publicExponent: Euint8.subarray(0, 3), // take three bytes (max 65537)
hash: {
name: 'SHA-1' // not required for actual RSA keys, but for crypto api 'sign' and 'verify'
}
};
keys = webCrypto.generateKey(keyGenOpt, true, ['encrypt', 'decrypt']);
} else {
if ((window.crypto && window.crypto.subtle) || window.msCrypto) {
// current standard spec
keyGenOpt = {
name: 'RSASSA-PKCS1-v1_5',
@ -173,6 +162,21 @@ export default function RSA() {
keys = util.promisifyIE11Op(keys, 'Error generating RSA key pair.');
}
}
else if (window.crypto && window.crypto.webkitSubtle) {
// outdated spec implemented by old Webkit
keyGenOpt = {
name: 'RSA-OAEP',
modulusLength: B, // the specified keysize in bits
publicExponent: Euint8.subarray(0, 3), // take three bytes (max 65537)
hash: {
name: 'SHA-1' // not required for actual RSA keys, but for crypto api 'sign' and 'verify'
}
};
keys = webCrypto.generateKey(keyGenOpt, true, ['encrypt', 'decrypt']);
}
else {
throw new Error('Unknown WebCrypto implementation');
}
return keys.then(exportKey).then(function(key) {
if (key instanceof ArrayBuffer) {