Builds and signs XML messages for the Brazilian Payment System (SPB) STR subsystem (Funds Transfer System). Creates digitally signed SISMSG envelopes used for interbank transfers via the Brazilian Central Bank.
Inputs
Tab: Build & Sign a new message or Verify an existing signed message.
Private Key: ECDSA private key (hex) for signing the message.
ISPB Emissor: ISPB code of the sending institution (8 digits).
ISPB Destinatário: ISPB code of the receiving institution (8 digits).
DomSist: System domain identifier (e.g., STR0004, STR0005).
NUOp: Unique Operation Number — auto-generated timestamp-based identifier.
SISMSG XML: The business message XML content to embed in the SISMSG envelope.
Tips
SPB messages must be digitally signed before transmission to the RSFN network.
The signature covers the entire SISMSG envelope ensuring integrity.
ISPB codes are 8-digit identifiers assigned by the Brazilian Central Bank (BCB).
Standards: BCB Manual de Segurança do SFN, RSFN Specification