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25 lines
1 KiB
JavaScript
25 lines
1 KiB
JavaScript
// src/utils/crypto.tsx
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import { encodeBase32 } from "./bytes";
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import { StackAssertionError } from "./errors";
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import { globalVar } from "./globals";
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function generateRandomValues(array) {
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if (!globalVar.crypto) {
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throw new StackAssertionError("Crypto API is not available in this environment. Are you using an old browser?");
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}
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if (!globalVar.crypto.getRandomValues) {
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throw new StackAssertionError("crypto.getRandomValues is not available in this environment. Are you using an old browser?");
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}
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return globalVar.crypto.getRandomValues(array);
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}
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function generateSecureRandomString(minBitsOfEntropy = 224) {
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const base32CharactersCount = Math.ceil(minBitsOfEntropy / 5);
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const bytesCount = Math.ceil(base32CharactersCount * 5 / 8);
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const randomBytes = generateRandomValues(new Uint8Array(bytesCount));
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const str = encodeBase32(randomBytes);
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return str.slice(str.length - base32CharactersCount).toLowerCase();
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}
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export {
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generateRandomValues,
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generateSecureRandomString
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};
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//# sourceMappingURL=crypto.js.map
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