Ensure alg is a number

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/server/src/attestation/verifyAttestationResponse.ts b/packages/server/src/attestation/verifyAttestationResponse.ts
index 40f5d08..5bbcbc8 100644
--- a/packages/server/src/attestation/verifyAttestationResponse.ts
+++ b/packages/server/src/attestation/verifyAttestationResponse.ts
@@ -126,7 +126,7 @@ export default function verifyAttestationResponse(options: Options): VerifiedAtt
   const decodedPublicKey = decodeCredentialPublicKey(credentialPublicKey);
   const alg = decodedPublicKey.get(COSEKEYS.alg);
 
-  if (!alg) {
+  if (Number.isNaN(Number(alg))) {
     throw new Error('Credential public key was missing alg');
   }