Cryptographic Hash

Category: Hash & MAC & CRC · Node Type ID: hash-digest

Computes cryptographic hash (SHA-2, SHA-3, BLAKE3)

Overview

Computes a cryptographic message digest over an arbitrary-length input byte array using one of 12 industry-standard hash functions spanning the NIST SHA-2 family (FIPS 180-4), NIST SHA-3 & Keccak family (FIPS 202), BLAKE2/BLAKE3 (RFC 7693), and legacy digests (RIPEMD-160, SHA-1, MD5).

The node is deterministic and stateless: identical input bytes always produce the exact same fixed-length digest.

When to Use

Computing message digests before raw/manual digital signature schemes (such as Asymmetric Padding in PSS mode or ECC Sign with pre-hashing disabled).
Deriving content fingerprints, Merkle tree nodes, Bitcoin/Ethereum address hashes (RIPEMD-160, Keccak-256), or integrity checksums.

Parameter Configuration

Parameter (ID)	Type & Default	Visibility Condition	Description & Options
Hash Algorithm `algorithm`	`select` Default: `SHA-256`	Always visible	Selects the cryptographic hash algorithm and output digest size: `SHA-256` (32B), `SHA-384` (48B), `SHA-512` (64B), `SHA-224` (28B), `SHA3-256` (32B), `SHA3-512` (64B), `Keccak-256` (32B Ethereum pre-FIPS padding), `BLAKE2b` (64B), `BLAKE2s` (32B), `BLAKE3` (32B), `RIPEMD-160` (20B), `MD5` (16B legacy), or `SHA-1` (20B legacy). `SHA-256`: SHA-256 (NIST FIPS 180-4) `SHA-512`: SHA-512 `SHA-224`: SHA-224 `SHA-384`: SHA-384 `SHA-512/224`: SHA-512/224 (NIST FIPS 180-4) `SHA-512/256`: SHA-512/256 (NIST FIPS 180-4) `SHA3-224`: SHA3-224 (NIST FIPS 202) `SHA3-256`: SHA3-256 (NIST FIPS 202) `SHA3-384`: SHA3-384 (NIST FIPS 202) `SHA3-512`: SHA3-512 (NIST FIPS 202) `Keccak-256`: Keccak-256 (Ethereum) `Keccak-512`: Keccak-512 `SHAKE128`: SHAKE128 (XOF) `SHAKE256`: SHAKE256 (XOF) `BLAKE2b`: BLAKE2b (64-bit platforms) `BLAKE2s`: BLAKE2s (32-bit platforms) `BLAKE3`: BLAKE3 (Ultra-fast parallel) `RIPEMD-160`: RIPEMD-160 (Bitcoin / Legacy) `MD5`: MD5 (Legacy RFC 1321) `SHA-1`: SHA-1 (Legacy RFC 3174)

Port I/O Specification

See Ports & Connections for general wiring rules, data type colors, and dynamic port creation.

Input Ports

Port Nature: Fixed Input Ports (1 total).

Port Name	Port ID	Data Type	Required	Visibility Condition	Description
`Data`	`data`	`Bytes`	Required	Always visible	Input message bytes (`Uint8Array`) to hash.

Output Ports

Port Nature: Fixed Output Ports (1 total).

Port Name	Port ID	Data Type	Visibility Condition	Description
`Digest`	`digest`	`Bytes`	Always visible	Computed fixed-length cryptographic hash digest (`Uint8Array`).

Error Cases

This node has no runtime failure cases (errorProfile: none) and always succeeds for any valid typed input.

Examples

Computing an Ethereum Keccak-256 Hash

Hash a byte payload using Keccak-256.

Connect your input bytes to Data and select Keccak-256 (Ethereum) in Hash Algorithm.
The Digest output port emits the 32-byte Keccak-256 hash.