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Hash Check

Check a password hash (SHA-1) against a list of hashes of known breached passwords downloaded from the haveibeenpwned database using the easypwned downloader.

API

Service meta data is available at GET /.

Check

The service provides a GET endpoint:

/:hash

Where :hash is a hex-encoded SHA-1 hash of the password to check; the reply is a JSON number 1 if the password hash was found in the database otherwise 0.

Batch

To check a batch of SHA-1 hashes send a POST request to / with a JSON array of hex-encoded strings.

The response will be a JSON array of equal length to the input with a 1 if the hash was found and 0 otherwise.

Scripts

Download

Run the scripts/download.sh script to install the downloader, download the database and create the bloom filter.

Upload

Run the scripts/upload.sh script to copy the bloom filter and meta data files to S3.

Docker

Build

If you have already downloaded the database then using -f Dockerfile-local will be faster as it won't download the bloom filter data from S3.

docker build . --tag hashcheck

Run

docker run -it --rm --name hashcheck -p 3342:3342 hashcheck

Deployment

Tag and push to run the workflow that deploys the container to ECR:

git tag v1.0.0
git push origin v1.0.0

Manual Deployment Notes

Deploy to the container registry.

Create a login password for the container registry:

AWS_PROFILE=sos-containers aws ecr-public get-login-password \
  --region us-east-1 | docker login \
  --username AWS --password-stdin public.ecr.aws/s2y4a9f8

MacOS ARM

For MacOS with ARM chips build for the correct deployment architecture and push:

docker buildx build --platform=linux/amd64 --push -t public.ecr.aws/s2y4a9f8/hashcheck:latest .

Linux

Build the image:

docker build . --tag hashcheck

Tag the image:

docker tag hashcheck:latest public.ecr.aws/s2y4a9f8/hashcheck:latest

Push the image to the registry:

docker push public.ecr.aws/s2y4a9f8/hashcheck:latest

© Copyright Save Our Secrets Pte Ltd 2022; all rights reserved.

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Tool for checking password hashes against the haveibeenpwned database

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