Language: JavaScript
Label: safe
CWE: CWE-331 \u2014 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Code:
        AesCbcCryptor.prototype.getKey = function () {
            return __awaiter(this, void 0, void 0, function () {
                var bKey, abHash;
                return __generator(this, function (_a) {
                    switch (_a.label) {
                        case 0:
                            bKey = AesCbcCryptor.encoder.encode(this.cipherKey);
                            return [4 /*yield*/, crypto.subtle.digest('SHA-256', bKey.buffer)];
                        case 1:
                            abHash = _a.sent();
                            return [2 /*return*/, crypto.subtle.importKey('raw', abHash, this.algo, true, ['encrypt', 'decrypt'])];
                    }
                });
            });
        };