public commit

app/src/core/utils/crypto.ts

@@ -0,0 +1,29 @@
+export const HashAlgorithms = ["SHA-1", "SHA-256", "SHA-384", "SHA-512"] as const;
+export type HashAlgorithm = (typeof HashAlgorithms)[number];
+export async function digest(alg: HashAlgorithm, input: string, salt?: string, pepper?: string) {
+   if (!HashAlgorithms.includes(alg)) {
+      throw new Error(`Invalid hash algorithm: ${alg}`);
+   }
+
+   // convert to Uint8Array
+   const data = new TextEncoder().encode((salt ?? "") + input + (pepper ?? ""));
+
+   // hash to alg
+   const hashBuffer = await crypto.subtle.digest(alg, data);
+
+   // convert hash to hex string
+   const hashArray = Array.from(new Uint8Array(hashBuffer));
+   return hashArray.map((byte) => byte.toString(16).padStart(2, "0")).join("");
+}
+
+export const hash = {
+   sha256: async (input: string, salt?: string, pepper?: string) =>
+      digest("SHA-256", input, salt, pepper),
+   sha1: async (input: string, salt?: string, pepper?: string) =>
+      digest("SHA-1", input, salt, pepper)
+};
+
+export async function checksum(s: any) {
+   const o = typeof s === "string" ? s : JSON.stringify(s);
+   return await digest("SHA-1", o);
+}