mirror of
https://github.com/fluencelabs/js-libp2p-crypto
synced 2025-03-16 02:00:55 +00:00
a5e05603ef
This PR simply detects missing web crypto and throws an error with an appropriate message. This is a stepping stone that will help users understand the problem until we have time to do a refactor of this module and of all the modules that use it to enable optionally passing your own crypto implementation. refs https://github.com/libp2p/js-libp2p-crypto/pull/149 refs https://github.com/libp2p/js-libp2p-crypto/pull/150 refs https://github.com/libp2p/js-libp2p-crypto/issues/105 refs https://github.com/ipfs/js-ipfs/issues/2153 refs https://github.com/ipfs/js-ipfs/issues/2017 License: MIT Signed-off-by: Alan Shaw <alan@tableflip.io>
25 lines
754 B
JavaScript
25 lines
754 B
JavaScript
/* eslint-env browser */
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'use strict'
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// Check native crypto exists and is enabled (In insecure context `self.crypto`
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// exists but `self.crypto.subtle` does not).
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exports.get = (win = self) => {
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const nativeCrypto = win.crypto || win.msCrypto
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if (!nativeCrypto || !nativeCrypto.subtle) {
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throw Object.assign(
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new Error(
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'Missing Web Crypto API. ' +
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'The most likely cause of this error is that this page is being accessed ' +
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'from an insecure context (i.e. not HTTPS). For more information and ' +
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'possible resolutions see ' +
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'https://github.com/libp2p/js-libp2p-crypto/blob/master/README.md#web-crypto-api'
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),
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{ code: 'ERR_MISSING_WEB_CRYPTO' }
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)
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}
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return nativeCrypto
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}
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