Both writers of bankid_identities.personal_number_enc passed a raw Buffer
to supabase-js, which PostgREST serializes as JSON: every row stored the
literal text {"type":"Buffer","data":[...]} instead of iv|tag|ciphertext
bytes, so decryptPersonalNumber could never have read them (issue #1232).
- encryptPersonalNumberForStorage(): hex-encode for PostgREST bytea input
- decryptStoredPersonalNumber(): tolerant decode (raw bytea read-back,
legacy JSON-Buffer text, Buffer, serialized object)
- migration 20260727170000 rewrites existing rows to raw bytes; prefix
guard keeps it idempotent and skips already-raw rows. Conversion SQL
verified read-only against prod: converted bytes decrypt with the live
key (GCM tag valid, 12-digit result).
Closes#1232
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Jakob Wennberg
ff205951b1