---
title: "uhashlib"
aliases:
    - firmwareapi/micropython/uhashlib.html
    - firmwareapi/micropython/uhashlib.md
    - chapter/firmwareapi/micropython/uhashlib
---

This module implements binary data hashing algorithms. MD5 and SHA are supported. By limitations in the hardware, only one active hashing operation is supported at a time.

## Constructors

#### class uhashlib.md5(\[data\])

Create a MD5 hasher object and optionally feed data into it.

#### class uhashlib.sha1(\[data\])

Create a SHA-1 hasher object and optionally feed data into it.

#### class uhashlib.sha224(\[data\])

Create a SHA-224 hasher object and optionally feed data into it.

#### class uhashlib.sha256(\[data\])

Create a SHA-256 hasher object and optionally feed data into it.

#### class uhashlib.sha384(\[data\])

Create a SHA-384 hasher object and optionally feed data into it.

#### class uhashlib.sha512(\[data\])

Create a SHA-512 hasher object and optionally feed data into it.

## Methods

#### hash.update(data)

Feed more binary data into hash.

#### hash.digest()

Return hash for all data passed through hash, as a bytes object. After this method is called, more data cannot be fed into hash any longer.

#### hash.hexdigest()

This method is NOT implemented. Use `ubinascii.hexlify(hash.digest())` to achieve a similar effect.