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status](https://ci.appveyor.com/api/projects/status/sy60s39cmyvd60i3/branch/master?svg=true)](https://ci.appveyor.com/project/ctalkington/node-crc32-stream/branch/master)\r\n\r\ncrc32-stream is a streaming CRC32 checksumer. It uses [buffer-crc32](https://www.npmjs.org/package/buffer-crc32) behind the scenes to reliably handle binary data and fancy character sets. Data is passed through untouched.\r\n\r\n[![NPM](https://nodei.co/npm/crc32-stream.png)](https://nodei.co/npm/crc32-stream/)\r\n\r\n### Install\r\n\r\n```bash\r\nnpm install crc32-stream --save\r\n```\r\n\r\nYou can also use `npm install https://github.com/archiverjs/node-crc32-stream/archive/master.tar.gz` to test upcoming versions.\r\n\r\n### Usage\r\n\r\n#### CRC32Stream\r\n\r\nInherits [Transform Stream](http://nodejs.org/api/stream.html#stream_class_stream_transform) options and methods.\r\n\r\n```js\r\nvar CRC32Stream = require('crc32-stream');\r\n\r\nvar source = fs.createReadStream('file.txt');\r\nvar checksum = new CRC32Stream();\r\n\r\nchecksum.on('end', function(err) {\r\n  // do something with checksum.digest() here\r\n});\r\n\r\n// either pipe it\r\nsource.pipe(checksum);\r\n\r\n// or write it\r\nchecksum.write('string');\r\nchecksum.end();\r\n```\r\n\r\n#### DeflateCRC32Stream\r\n\r\nInherits [zlib.DeflateRaw](http://nodejs.org/api/zlib.html#zlib_class_zlib_deflateraw) options and methods.\r\n\r\n```js\r\nvar DeflateCRC32Stream = require('crc32-stream').DeflateCRC32Stream;\r\n\r\nvar source = fs.createReadStream('file.txt');\r\nvar checksum = new DeflateCRC32Stream();\r\n\r\nchecksum.on('end', function(err) {\r\n  // do something with checksum.digest() here\r\n});\r\n\r\n// either pipe it\r\nsource.pipe(checksum);\r\n\r\n// or write it\r\nchecksum.write('string');\r\nchecksum.end();\r\n```\r\n\r\n### Instance API\r\n\r\n#### digest()\r\n\r\nReturns the checksum digest in unsigned form.\r\n\r\n#### hex()\r\n\r\nReturns the hexadecimal representation of the checksum digest. 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