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# @aws-crypto/supports-web-crypto Functions to check web crypto support for browsers. ## Usage ``` import {supportsWebCrypto} from '@aws-crypto/supports-web-crypto'; if (supportsWebCrypto(window)) { // window.crypto.subtle.encrypt will exist } ``` ## supportsWebCrypto Used to make sure `window.crypto.subtle` exists and implements crypto functions as well as a cryptographic secure random source exists. ## supportsSecureRandom Used to make sure that a cryptographic secure random source exists. Does not check for `window.crypto.subtle`. ## supportsSubtleCrypto ## supportsZeroByteGCM ## Test `npm test`