fix(sdk-core): clarify base32 Safe root validation

Update the Ed25519 Safe root validation error to describe the canonical base32 representation used by backup and BitGo roots.\n\nThe root payload is raw publicKey32 || chainCode32 encoded as unpadded RFC 4648 base32; it is not lowercase hexadecimal or a coin-specific public-key format.\n\nTicket: WCN-2411

Author: davidkaplanbitgo

modules/sdk-core/src/bitgo/safe/safes.ts

@@ -270,7 +270,7 @@ export class Safes implements ISafes {
         !bitgoKeychain.pub ||
         !isDerivableEd25519Pub(bitgoKeychain.pub))
     ) {
-      throw new Error('Safe ed25519Multisig roots are not derivable: expected 64-byte lowercase hex material');
+      throw new Error('Safe ed25519Multisig roots are not derivable: expected 64-byte canonical base32 material');
     }
 
     return [userKeychain.id, backupKeychain.id, bitgoKeychain.id];

modules/sdk-core/test/unit/bitgo/safe/fixtures/derivableEd25519Pub.json

@@ -18,13 +18,31 @@
     }
   ],
   "invalid": [
-    { "name": "lowercase", "composite": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaakxk5lvov2xkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" },
-    { "name": "short", "composite": "AA" },
-    { "name": "non-canonical trailing bits", "composite": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAKXK5LVOV2XKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB" }
+    {
+      "name": "lowercase",
+      "composite": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaakxk5lvov2xkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    },
+    {
+      "name": "short",
+      "composite": "AA"
+    },
+    {
+      "name": "non-canonical trailing bits",
+      "composite": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAKXK5LVOV2XKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB"
+    }
   ],
   "invalidComposite": [
-    { "name": "lowercase", "composite": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaakxk5lvov2xkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" },
-    { "name": "short", "composite": "AA" },
-    { "name": "non-canonical trailing bits", "composite": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAKXK5LVOV2XKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB" }
+    {
+      "name": "lowercase",
+      "composite": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaakxk5lvov2xkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    },
+    {
+      "name": "short",
+      "composite": "AA"
+    },
+    {
+      "name": "non-canonical trailing bits",
+      "composite": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAKXK5LVOV2XKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB"
+    }
   ]
 }