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Generate an RSA PSS key pair

by
Published Jan 15, 2023

Generate a license key pair using RSA PSS for creating signature, useful for generating license keys for instance

Script helper Verified
Use in Windmill

The script

Submitted by hugo989 Typescript (fetch-only)
Verified 6 days ago
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//native
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export async function main() {
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  const keys = await window.crypto.subtle.generateKey(
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    {
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      name: "RSA-PSS",
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      modulusLength: 1024,
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      publicExponent: new Uint8Array([1, 0, 1]),
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      hash: "SHA-256",
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    },
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    true,
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    ["sign", "verify"],
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  );
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  return {
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    private: await exportKey(keys.privateKey, true),
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    public: await exportKey(keys.publicKey, false),
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  };
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}
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async function exportKey(key: CryptoKey, isPrivateKey: boolean) {
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  const exported = await window.crypto.subtle.exportKey(
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    isPrivateKey ? "pkcs8" : "spki",
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    key,
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  );
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  const exportedAsString = ab2str(exported);
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  const exportedAsBase64 = window.btoa(exportedAsString);
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  const pemExported = `-----BEGIN ${
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    isPrivateKey ? "PRIVATE" : "PUBLIC"
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  } KEY-----\n${exportedAsBase64}\n-----END PRIVATE KEY-----`;
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  return pemExported;
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}
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function ab2str(buf: ArrayBuffer) {
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  return String.fromCharCode.apply(null, new Uint8Array(buf));
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}
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Other submissions
  • Submitted by admin Deno
    Created 398 days ago
    All edits
    Permalink
    1 
    export async function main() {
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      const keys = await window.crypto.subtle.generateKey(
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        {
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          name: "RSA-PSS",
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          modulusLength: 1024,
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          publicExponent: new Uint8Array([1, 0, 1]),
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          hash: "SHA-256",
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        },
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        true,
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        ["sign", "verify"],
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      );
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      return {
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        private: await exportKey(keys.privateKey, true),
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        public: await exportKey(keys.publicKey, false),
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      };
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    }
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    async function exportKey(key: CryptoKey, isPrivateKey: boolean) {
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      const exported = await window.crypto.subtle.exportKey(
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        isPrivateKey ? "pkcs8" : "spki",
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        key,
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      );
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      const exportedAsString = ab2str(exported);
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      const exportedAsBase64 = window.btoa(exportedAsString);
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      const pemExported = `-----BEGIN ${
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        isPrivateKey ? "PRIVATE" : "PUBLIC"
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      } KEY-----\n${exportedAsBase64}\n-----END PRIVATE KEY-----`;
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      return pemExported;
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    }
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    function ab2str(buf: ArrayBuffer) {
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      return String.fromCharCode.apply(null, new Uint8Array(buf));
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    }
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