I'm trying to import a public key into crypto.subtle and I got a cryptic (pun intended) error:
Uncaught (in promise) TypeError: Failed to execute 'importKey' on 'SubtleCrypto': The provided value cannot be converted to a sequence.
Here's my key:
jPublicJWK = {
"crv":"P-256",
"key_ops":"verify",
"kty":"EC",
"x":"QcQI-5wvczyuzU0SWl91tdUWbG5RMYFdNrOCNHen-08",
"y":"sYVMwVF4ZO2-u0xPMyOXff7VoOQo6kdBv0IeEcnrYno",
"use":"sig"
}
And here's how I'm importing:
let jwkCryptoKey = await crypto.subtle.importKey(
"jwk",
jPublicJWK,
{
name: "ECDSA",
namedCurve: "P-256",
},
true,
["verify"]
);
What am I doing wrong?
According to the the rfc, key_ops
is an array. "Its value is an array of key operation values." Tricky little sentence to miss.
Since key_ops
is optional, you can delete it all together or put it in an array:
jPublicJWK = {
"crv": "P-256",
"kty": "EC",
"key_ops": ["verify"],
"x": "NDeK5mTx7Tse16x4ipl1m6NYDkwLO-YBU_BUqEtOuIM",
"y": "9Q3XDebaKId0pmrPqVTTR__UnpBn2oxqY8nAlrTw_qU",
"use": "sig"
};