functions to generate SHA2, SHA3 hashes

app/crypto.js

@@ -0,0 +1,43 @@
+import { createHash } from "node:crypto";
+
+// Calculate a SHA256 hash using the algorithm from the SHA-2 family
+export function sha256(content) {
+  return createHash("sha256").update(content).digest("hex");
+}
+
+// Calculate a SHA512 hash using the algorithm from the SHA-2 family
+export function sha512(content) {
+  return createHash("sha512").update(content).digest("hex");
+}
+
+// Calculate a SHA256 hash using the algorithm from the SHA-3 family
+export function sha3_256(content) {
+  return createHash("sha3-256").update(content).digest("hex");
+}
+
+// Calculate a SHA512 hash using the algorithm from the SHA-3 family
+export function sha3_512(content) {
+  return createHash("sha3-512").update(content).digest("hex");
+}
+
+// Convert hexadecimal string to base64 encoded string
+export function encodeBase64(hexString) {
+  // convert hexadecimal string to a Buffer
+  const buffer = Buffer.from(hexString, "hex");
+
+  // convert Buffer to base64 encoded string
+  const base64String = buffer.toString("base64");
+
+  return base64String;
+}
+
+// Convert base64 encoded string to hexadecimal string
+export function decodeBase64(base64String) {
+  // convert base64 encoded string to a Buffer
+  const buffer = Buffer.from(base64String, "base64");
+
+  // convert Buffer to a hexadecimal string
+  const originalString = buffer.toString("hex");
+
+  return originalString;
+}