Logging

Closes #11

src/signature.ts

@@ -1,4 +1,5 @@
 import {Result} from 'result'
+import logger from 'log'
 
 export type PrivKey = CryptoKey
 export type PubKey = CryptoKey
@@ -8,6 +9,7 @@ const algorithm: EcdsaParams = {
     name: "ECDSA",
     hash: {name: "SHA-512"},
 }
+const log = logger('crypto:signature')
 
 /**
  * Create a new keypair for signing
@@ -15,6 +17,9 @@ const algorithm: EcdsaParams = {
  * @return [privkey, pubkey] keys
  */
 export async function gen_keypair(extractable: boolean = false) : Promise<KeyPair> {
+    log.trace('Generating keypair')
+    log.debug('Extractable :', extractable ? 'yes' : 'no')
+
     let key = await window.crypto.subtle.generateKey(
         {
             name: "ECDSA",
@@ -27,18 +32,25 @@ export async function gen_keypair(extractable: boolean = false) : Promise<KeyPai
     return [key.privateKey, key.publicKey]
 }
 export async function sign(privkey: PrivKey, message: Uint8Array) : Promise<Result<ArrayBuffer>> {
+    log.trace('sign')
+
     try {
         return Result.ok(await window.crypto.subtle.sign(
             algorithm,
             privkey,
             message,
         ))
-    } catch(_) {}
+    } catch(e) {
+        log.warn('Signature failed')
+        log.debug(`Error : ${e}`)
+    }
 
     return Result.error([])
 }
 
 export async function verify(pubkey: PubKey, message: Uint8Array, signature: ArrayBuffer): Promise<boolean> {
+    log.trace('Verify signature')
+
     try {
         return await window.crypto.subtle.verify(
             algorithm,
@@ -46,7 +58,10 @@ export async function verify(pubkey: PubKey, message: Uint8Array, signature: Arr
             signature,
             message
         );
-    } catch (_) {}
+    } catch (e) {
+        log.warn('Verification failed')
+        log.debug(`Error : ${e}`)
+    }
 
     return false;
 }