j4
j4•3y ago

Getting error `Unrecognized algorithm name` on `crypto.subtle.importKey()`

I can't figure this one out. I've done some searching and found a list of supported algos at https://deno.land/std@0.167.0/crypto/mod.ts See anything I'm doing wrong? I tried it without the hash as well. Here's a snippet: 
/* supabase edge function */
import { crypto } from 'https://deno.land/std@0.167.0/crypto/mod.ts'

const cryptokey = await crypto.subtle.importKey('spki', encoded_plain_key, 'SHA-512', false, ['sign'])
/* supabase edge function */
import { crypto } from 'https://deno.land/std@0.167.0/crypto/mod.ts'

const cryptokey = await crypto.subtle.importKey('spki', encoded_plain_key, 'SHA-512', false, ['sign'])
1 Reply
j4
j4OP•3y ago
I've now tried passing in an eliptical curve params object, instead of 'SHA-512'. This ends up throwing an undefined error. 
{
  name: 'ECDSA',
  namedCurve: 'P-521'
}
{
  name: 'ECDSA',
  namedCurve: 'P-521'
}
I also changed spki to pkcs8, as I realized this is for a private key. Found out I need to base64 decode the key, before I convert it to an array buffer. But even then, undefined is thrown. Thoughts? 
      /* decode base64 key */
      const decoded_key = decode64ToString(Deno.env.get('SIGNATURE_PRIVATE_KEY') || '')
      console.log('decoded base64', decoded_key)

      /* convert decoded key into ArrayBuffer */
      const encoder = new TextEncoder()
      const buffer_key = encoder.encode(decoded_key)
      console.log('ArrayBuffer key', buffer_key)

      /* create a CryptoKey */
      let key
      try {
        key = await crypto.subtle.importKey('pkcs8', buffer_key, {
          name: 'ECDSA',
          namedCurve: 'P-521',
          hash: 'SHA-512'
        }, false, ['sign'])

        console.log('key', key)
      } catch(err) {
        console.log('key error', err)
        throw err
      }

      /* later on, sign message */
      /* decode base64 key */
      const decoded_key = decode64ToString(Deno.env.get('SIGNATURE_PRIVATE_KEY') || '')
      console.log('decoded base64', decoded_key)

      /* convert decoded key into ArrayBuffer */
      const encoder = new TextEncoder()
      const buffer_key = encoder.encode(decoded_key)
      console.log('ArrayBuffer key', buffer_key)

      /* create a CryptoKey */
      let key
      try {
        key = await crypto.subtle.importKey('pkcs8', buffer_key, {
          name: 'ECDSA',
          namedCurve: 'P-521',
          hash: 'SHA-512'
        }, false, ['sign'])

        console.log('key', key)
      } catch(err) {
        console.log('key error', err)
        throw err
      }

      /* later on, sign message */

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