Function deriveP2BKBlindedPubkeys

deriveP2BKBlindedPubkeys(
    pubkeys: string[],
    eBytes?: Uint8Array<ArrayBufferLike>,
    dataIsPubkey?: boolean,
): { blinded: string[]; Ehex: string }
Blind a sequence of public keys using ECDH derived tweaks, one tweak per slot.
Parameters
- pubkeys: string[]
  Ordered SEC1 compressed pubkeys, [data, ...pubkeys, ...refund]
- OptionaleBytes: Uint8Array<ArrayBufferLike>
  Optional. Fixed ephemeral secret key to use (eg for SIG_ALL / testing)
- dataIsPubkey: boolean = true
  Optional. False when slot 0 holds non-key data (eg an HTLC hashlock), so the first pubkey takes slot 1.
Returns { blinded: string[]; Ehex: string }
Blinded pubkeys in the same order, and Ehex as SEC1 compressed hex, 33 bytes.

Remarks
Security note: "Ehex" must never be reused. Doing so would create linkability and leak privacy. The only exception is for SIG_ALL proofs, as all secret tags must match.

This is the Sender side API.

Throws
If a blinded key is at infinity.
- Defined in src/crypto/NUT28.ts:31