Baseline Widely available
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The read-only type property of the CryptoKey interface indicates which kind of key is represented by the object. It can have the following values:
"secret": This key is a secret key for use with a symmetric algorithm."private": This key is the private half of an asymmetric algorithm's CryptoKeyPair."public": This key is the public half of an asymmetric algorithm's CryptoKeyPair.One of the following strings: "secret", "private", or "public".
This function verifies a message using SubtleCrypto.verify() and a public key given in the parameter. If the key is not a public key, it always returns "invalid", as such verification is fundamentally insecure.
async function verifyMessage(publicKey) {
const signatureValue = document.querySelector(
".rsassa-pkcs1 .signature-value",
);
signatureValue.classList.remove("valid", "invalid");
let result = false; // By default, it is invalid
if (publicKey.type === "public") {
const encoded = getMessageEncoding();
result = await window.crypto.subtle.verify(
"RSASSA-PKCS1-v1_5",
publicKey,
signature,
encoded,
);
}
signatureValue.classList.add(result ? "valid" : "invalid");
}
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