usvc / go-password

A Go package to manage password hashing, verification, and validation

Password

A Go package to manage password hashing, verification, and validation.

Github	https://github.com/usvc/go-password
Gitlab	https://gitlab.com/usvc/modules/go/password

---

• Password
  • Usage
    • Importing
    • Hashing Passwords
    • Verifying Passwords
    • Validating Passwords
    • Customizing Password Policies
  • Development Runbook
    • Getting Started
    • Continuous Integration (CI) Pipeline
      • On Github
        • Releasing
      • On Gitlab
        • Version Bumping
  • Licensing

Usage

Importing

import "github.com/usvc/go-password"

Hashing Passwords

plaintext := "abcd1234!@#$"
hash, salt, err := password.Hash(plaintext, 32)
// ...
// store the hash and salt
// ...

Verifying Passwords

storedHash := "<hash>"
storedSalt := "<salt>"
plaintext := "abcd1234!@#$"
err := password.Verify(plaintext, storedHash, storedSalt)
if err != nil {
  // handle failed verification
} else {
  // handle successful verification
}

Validating Passwords

defaultPolicy := password.GetDefaultPolicy()
plaintext := "abcd1234!@#$"
if err := password.Validate(plaintext, defaultPolicy); err != nil {
  // handle failed validation
} else {
  // handle successful validation
}

Customizing Password Policies

customPolicy := password.Policy{
  MaximumLength: 32,
  MinimumLength: 12,
  MinimumLowercaseCount: 1,
  MinimumUppercaseCount: 1,
  MinimumNumericCount: 1,
  MinimumSpecialCount: 1,
  CustomSpecial: []byte("`!@"),
}
plaintext := "abcd1234!@#$"
if err := password.Validate(plaintext, defaultPolicy); err != nil {
  // handle failed validation
} else {
  // handle successful validation
}

Development Runbook

Getting Started

1. Clone this repository
2. Run make deps to pull in external dependencies
3. Write some awesome stuff
4. Run make test to ensure unit tests are passing
5. Push

Continuous Integration (CI) Pipeline

On Github

Github is used to deploy binaries/libraries because of it's ease of access by other developers.

Releasing

Releasing of the binaries can be done via Travis CI.

1. On Github, navigate to the tokens settings page (by clicking on your profile picture, selecting Settings, selecting Developer settings on the left navigation menu, then Personal Access Tokens again on the left navigation menu)
2. Click on Generate new token, give the token an appropriate name and check the checkbox on public_repo within the repo header
3. Copy the generated token
4. Navigate to travis-ci.org and access the cooresponding repository there. Click on the More options button on the top right of the repository page and select Settings
5. Scroll down to the section on Environment Variables and enter in a new NAME with RELEASE_TOKEN and the VALUE field cooresponding to the generated personal access token, and hit Add

On Gitlab

Version Bumping

To set up the CI pipeline in Gitlab:

1. Run make .ssh
2. Copy the contents of the file generated at ./.ssh/id_rsa.base64 into an environment variable named DEPLOY_KEY in Settings > CI/CD > Variables
3. Navigate to the Deploy Keys section of the Settings > Repository > Deploy Keys and paste in the contents of the file generated at ./.ssh/id_rsa.pub with the Write access allowed checkbox enabled

• DEPLOY_KEY: generate this by running make .ssh and copying the contents of the file generated at ./.ssh/id_rsa.base64

Licensing

Code in this package is licensed under the MIT license (click to view text).