Crate rfe_types 

Shared types for Rust Fintech Ecosystem (RFE).

Provides newtype identifiers, Blake3 hashing helpers, and Decimal re-exports used across RFE crates. No I/O, no async.

Re-exports

pub use rust_decimal;

Modules

hashing

test_vectors

NORM Protocol v1 Canonical Test Vectors. Used to verify cross-platform determinism across Xtensa (TrustBox) and x86_64 (Risk-Lens).

Structs

AuditEntry

Append-only audit entry — blake3 chained for tamper evidence. Clean-room of LedgerEntry from zerocore-gateway/audit-ledger.

ClientId

Client/customer identifier.

ComplianceReport

ExportableAuditRoot

Dual-hash audit root for regulatory export (GOST R 34.11-2012 / Streebog-256). The blake3_root is the internal chain root; streebog_root is its Streebog-256 re-hash required for CBR submissions and SMEV 4 payload signatures.

Inn

Russian taxpayer identification number (INN), 10 or 12 digits.

LoanId

Loan/order identifier.

Ogrn

Russian OGRN — primary state registration number, 13 or 15 digits.

RequestId

Unique request/correlation identifier (UUID v4).

SealInput

Frozen in rfe-types v0.1.0 for TrustBox compatibility. Breaking field changes require a semver-major release. Canonical fields: nonce, request_hash, result_hash, chain_head_pre.

Sensitive

Wrapper to prevent PII leakage in logs.

SignedAuditExportEnvelope

Enums

AuditExportError

AuditSignatureAlgorithm

FraudSign

RfeError

Constants

SEAL_DOMAIN_PREFIX

NORM Protocol v1 Seal Input. Prefix: “NORM_SEAL_V1” (12 bytes)

Traits

Hashable

Any type that can produce a deterministic content hash.

Functions

audit_root_gost_export

Produce an ExportableAuditRoot from an existing BLAKE3 chain root. This is the only function in the codebase that computes Streebog-256. Call exclusively at the export boundary (SMEV 4 payload, CBR submission header).

blake3_chain

Iterated blake3 hash over multiple byte slices (in order). Matches the pattern from zerocore-gateway/common for audit chaining.

blake3_hash

Compute blake3 hash of a single byte slice.

build_signed_audit_export

round_financial

Round to 2 decimal places using banker’s rounding (HALF_EVEN). Used for financial calculations per CBR requirements.

safe_div

Safe division returning zero instead of panicking on zero denominator.