Fix bug with enforcing alg be a number

2 files changed, 3 insertions, 3 deletions

diff --git a/packages/server/src/attestation/verifications/verifyPacked.ts b/packages/server/src/attestation/verifications/verifyPacked.ts
index e8be389..977f075 100644
--- a/packages/server/src/attestation/verifications/verifyPacked.ts
+++ b/packages/server/src/attestation/verifications/verifyPacked.ts
@@ -36,7 +36,7 @@ export default async function verifyAttestationPacked(options: Options): Promise
     throw new Error('No attestation signature provided in attestation statement (Packed)');
   }
 
-  if (Number.isNaN(Number(alg))) {
+  if (typeof alg !== 'number') {
     throw new Error(`Attestation Statement alg "${alg}" is not a number (Packed)`);
   }
 
diff --git a/packages/server/src/attestation/verifyAttestationResponse.ts b/packages/server/src/attestation/verifyAttestationResponse.ts
index fe883e6..4ec0a7d 100644
--- a/packages/server/src/attestation/verifyAttestationResponse.ts
+++ b/packages/server/src/attestation/verifyAttestationResponse.ts
@@ -134,8 +134,8 @@ export default async function verifyAttestationResponse(
   const decodedPublicKey = decodeCredentialPublicKey(credentialPublicKey);
   const alg = decodedPublicKey.get(COSEKEYS.alg);
 
-  if (Number.isNaN(Number(alg))) {
-    throw new Error('Credential public key was missing alg');
+  if (typeof alg !== 'number') {
+    throw new Error('Credential public key was missing numeric alg');
   }
 
   // Make sure the key algorithm is one we specified within the attestation options