React-Native + crypto : How to generate HMAC in React-Native?

Question

I have tried crypto, which obviously doesn't work because it depends on node running. So, I turned to crypto-browserify, but I believe there are dependency issues. If anyone could help, I'd be much appreciative.

For reference, I previously used crypto like so:

crypto.createHmac('md5', "MY_KEY").update('SOMETHING_TO_ENCRYPT').digest('hex');

EDIT

I am trying to encrypt a string salted with a key. The above code is what I used previously to attain this. I need to do an analogous operation in React-Native.

When trying to use crypto-browserify (which I thought would work in React-Native), I get the following in the packager:

Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/plist-parser/node_modules/sax/lib/sax.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/plist-parser/node_modules/sax/lib/sax.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/create-hash/node_modules/cipher-base/index.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/create-hash/node_modules/cipher-base/index.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/create-hmac/browser.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-cipher/node_modules/browserify-aes/node_modules/cipher-base/index.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-cipher/node_modules/browserify-aes/node_modules/cipher-base/index.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-cipher/node_modules/browserify-des/node_modules/cipher-base/index.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-cipher/node_modules/browserify-des/node_modules/cipher-base/index.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/browser.js
Unable to resolve module vm from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/api.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/base/buffer.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/decoders/pem.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/encoders/der.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/encoders/pem.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/browserify-aes/node_modules/cipher-base/index.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/browserify-sign/node_modules/parse-asn1/node_modules/browserify-aes/node_modules/cipher-base/index.js
Unable to resolve module vm from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/api.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/base/buffer.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/decoders/pem.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/encoders/der.js
Unable to resolve module buffer from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/asn1.js/lib/asn1/encoders/pem.js
Unable to resolve module stream from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/browserify-aes/node_modules/cipher-base/index.js
Unable to resolve module string_decoder from /Users/kelseyregan/BitBucket/React-Native-core/reup/node_modules/crypto-browserify/node_modules/public-encrypt/node_modules/parse-asn1/node_modules/browserify-aes/node_modules/cipher-base/index.js

Answer 1

As Nader Dabit pointed out, using the npm package crypto-js with RN on version 0.12.0 seems to do the trick.

Answer 2

For the year of 2020, you should use crypto-js with v3.3.0 now.