I'm having an issue with a webpack build process that suddenly broke resulting in the following error...

<s> [webpack.Progress] 10% building 0/1 entries 0/0 dependencies 0/0 modules
node:internal/crypto/hash:67
  this[kHandle] = new _Hash(algorithm, xofLen);
                  ^

Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:67:19)
    at Object.createHash (node:crypto:130:10)
    at BulkUpdateDecorator.hashFactory (/app/node_modules/webpack/lib/util/createHash.js:155:18)
    at BulkUpdateDecorator.update (/app/node_modules/webpack/lib/util/createHash.js:46:50)
    at OriginalSource.updateHash (/app/node_modules/webpack-sources/lib/OriginalSource.js:131:8)
    at NormalModule._initBuildHash (/app/node_modules/webpack/lib/NormalModule.js:888:17)
    at handleParseResult (/app/node_modules/webpack/lib/NormalModule.js:954:10)
    at /app/node_modules/webpack/lib/NormalModule.js:1048:4
    at processResult (/app/node_modules/webpack/lib/NormalModule.js:763:11)
    at /app/node_modules/webpack/lib/NormalModule.js:827:5 {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'
}
command terminated with exit code 1

I've tried googling ERR_OSSL_EVP_UNSUPPORTED webpack which yielded almost no useful results but did highlight an issue using MD4 as provided by OpenSSL (which is apparently deprecated?) to generate hashes.

The webpack.config.js code is as follows:

const path = require('path');
const webpack = require('webpack');

/*
 * SplitChunksPlugin is enabled by default and replaced
 * deprecated CommonsChunkPlugin. It automatically identifies modules which
 * should be splitted of chunk by heuristics using module duplication count and
 * module category (i. e. node_modules). And splits the chunks…
 *
 * It is safe to remove "splitChunks" from the generated configuration
 * and was added as an educational example.
 *
 * https://webpack.js.org/plugins/split-chunks-plugin/
 *
 */

/*
 * We've enabled TerserPlugin for you! This minifies your app
 * in order to load faster and run less javascript.
 *
 * https://github.com/webpack-contrib/terser-webpack-plugin
 *
 */

const TerserPlugin = require('terser-webpack-plugin');

module.exports = {
    mode: 'development',
    entry: './src/js/scripts.js',

    output: {
        path: path.resolve(__dirname, 'js'),
        filename: 'scripts.js'
    },

    devtool: 'source-map',

    plugins: [new webpack.ProgressPlugin()],

    module: {
        rules: []
    },

    optimization: {
        minimizer: [new TerserPlugin()],

        splitChunks: {
            cacheGroups: {
                vendors: {
                    priority: -10,
                    test: /[\\/]node_modules[\\/]/
                }
            },

            chunks: 'async',
            minChunks: 1,
            minSize: 30000,
            name: 'true'
        }
    }
};

How do I change the hashing algorithm used by webpack to something else?

CodePudding user response：

There is a hashing algorithm that comes with webpack v5.54.0 that does not rely on OpenSSL.

To use this hash function that relies on a npm-provided dependency instead of an operating system-provided dependency, modify the webpack.config.cjs output key to include the hashFunction: "xxhash64" option.

module.exports = {
    output: {
        hashFunction: "xxhash64"
    }
};

CodePudding user response：

Ryan Brownell's answer is the ideal solution if you are using webpack v5.54.0 .

If you're using an older version of webpack, you can still solve this by changing the hash function to one that is not deprecated. (It defaults to the ancient md4, which OpenSSL has removed support for, which is the root cause of the error.) The supported algorithms are any supported by crypto.createHash. For example, to use SHA-256:

module.exports = {
    output: {
        hashFunction: "sha256"
    }
};

Finally, if you are unable to change the webpack configuration (e.g. if it's a transitive dependency which is running webpack), you can enable OpenSSL's legacy provider to temporarily enable MD4 during the webpack build. This is a last resort. Create a file openssl.cnf with this content:

openssl_conf = openssl_init

[openssl_init]
providers = provider_sect

[provider_sect]
default = default_sect
legacy = legacy_sect

[default_sect]
activate = 1

[legacy_sect]
activate = 1

and then set the environment variable OPENSSL_CONF to the path to that file when running webpack.