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dcr\n\n\u003e Decrypt sensitive parts of log stream on the fly\n\n[![Build Status](https://travis-ci.org/kimmobrunfeldt/dcr.svg?branch=master)](https://travis-ci.org/kimmobrunfeldt/dcr) *Build status for master*\n\n[![NPM Badge](https://nodei.co/npm/dcr.png?downloads=true)](https://www.npmjs.com/package/dcr)\n\nDecrypts a log stream with some encrypted details\n\n```\n2017-03-25T22:40:38.590Z Request body: ENCRYPTED(09fdb69ec06f0357e972251ea1188f2a92c5929f5206)\n```\n\nto readable on the fly:\n\n```\n2017-03-25T22:40:38.590Z Request body: {\"name\": \"John Doe\"}\n```\n\n## Why\n\nThis tool makes life easier when handling logs which have encrypted parts.\n\nI use this in my node backend projects. My main use case is to log body objects\nof failed requests, which may contain user email, addresses and other personal\ndata. Sensitive data needs to be encrypted and logging them as plain text\nis not a good practice. However I want to keep other parts of the logs as\nplain text so they are searchable in e.g. Papertrail.\n\nThis prevents accidentally leaking user data via log dumps.\n\n## Usage\n\nIn server code, encrypt certain parts of logs with [simple-encryptor](https://github.com/sehrope/node-simple-encryptor). Make sure you print in\n`ENCRYPTED(gibberish)` format.\n\n```js\nconst simpleEncryptor = require('simple-encryptor');\nconst encryptor = simpleEncryptor(process.env.LOG_ENCRYPT_KEY);\n\nconst userData = { name: 'John Doe', securityNumber: '1234' };\nconst encrypted = encryptor.encrypt(userData);\nconsole.log('User data', `ENCRYPTED(${encrypted})`);\n```\n\n**To print logs as plain text**\n\n```\nnpm start | dcr\n```\n\n**Print Heroku logs as plain text**\n\n```bash\nheroku logs --force-colors -a my-app -t | dcr --key=$(heroku config:get LOG_ENCRYPT_KEY -a my-app)\n```\n\n**Decrypt also stderr**\n\n```bash\nnpm start 2\u003e\u00261 | dcr\n```\n\nDecryption key is read from `process.env.LOG_ENCRYPT_KEY` by default.\n\n**Unfortunately the only way to use `dcr` currently is via piping.** Open\nan issue if you have other use cases.\n\n## Install\n\n```bash\nnpm install -g dcr\n```\n\nOnly Node 6 is \"officially\" supported at the moment.\n\n\n## Help\n\n```\nUsage: dcr [options]\n\nOptions:\n  --key          Decryption key. Default taken from process.env.LOG_ENCRYPT_KEY.\n                                          [string] [default: \"0123456789abcdef\"]\n  --max-chars    Maximum characters allowed inside encrypted block. If the limit\n                 is exceeded, block is printed as is and no transformation is\n                 applied.                            [number] [default: 1048576]\n  -h, --help     Show help                                             [boolean]\n  -v, --version  Show version number                                   [boolean]\n\nExamples:\n\n  Decrypt stdout from npm start command\n  $ npm start | dcr\n\n  Decrypt stdout+err from npm start command\n  $ npm start 2\u003e\u00261 | dcr\n\n  Decrypt logs from Heroku app\n  $ heroku logs --force-colors -a my-app -t | dcr --key=$(heroku config:get\n  LOG_ENCRYPT_KEY -a my-app\n```\n\n## License\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkimmobrunfeldt%2Fdcr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkimmobrunfeldt%2Fdcr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkimmobrunfeldt%2Fdcr/lists"}