Unpack a .iflx byte string and return both the bundle and any
embedded signature block. The signature block is returned RAW —
verification (canonical hash recomputation, key import, crypto
verify) lives in signing/verify.ts and is the caller's
responsibility.
Unpack a .iflx byte string and return both the bundle and any embedded signature block. The signature block is returned RAW — verification (canonical hash recomputation, key import, crypto verify) lives in
signing/verify.tsand is the caller's responsibility.