Function getAlgorithm

algorithm.ts:60–101

(alg: Algorithm)

}

export function getAlgorithm(alg: Algorithm) {
  switch (alg) {
    case "HS256":
      return { hash: { name: "SHA-256" }, name: "HMAC" };
    case "HS384":
      return { hash: { name: "SHA-384" }, name: "HMAC" };
    case "HS512":
      return { hash: { name: "SHA-512" }, name: "HMAC" };
    case "PS256":
      return {
        hash: { name: "SHA-256" },
        name: "RSA-PSS",
        saltLength: 256 >> 3,
      };
    case "PS384":
      return {
        hash: { name: "SHA-384" },
        name: "RSA-PSS",
        saltLength: 384 >> 3,
      };
    case "PS512":
      return {
        hash: { name: "SHA-512" },
        name: "RSA-PSS",
        saltLength: 512 >> 3,
      };
    case "RS256":
      return { hash: { name: "SHA-256" }, name: "RSASSA-PKCS1-v1_5" };
    case "RS384":
      return { hash: { name: "SHA-384" }, name: "RSASSA-PKCS1-v1_5" };
    case "RS512":
      return { hash: { name: "SHA-512" }, name: "RSASSA-PKCS1-v1_5" };
    case "ES256":
      return { hash: { name: "SHA-256" }, name: "ECDSA", namedCurve: "P-256" };
    case "ES384":
      return { hash: { name: "SHA-384" }, name: "ECDSA", namedCurve: "P-384" };
    // case "ES512":
    // return { hash: { name: "SHA-512" }, name: "ECDSA", namedCurve: "P-521" };
    default:
      throw new Error(`The jwt's alg '${alg}' is not supported.`);
  }
}