Polyfills for native crypto

1 files changed, 21 insertions, 0 deletions

diff --git a/src/platform/polyfills.native.ts b/src/platform/polyfills.native.ts
new file mode 100644
index 000000000..b4d38f04f
--- /dev/null
+++ b/src/platform/polyfills.native.ts
@@ -0,0 +1,21 @@
+import {generateSecureRandom} from 'react-native-securerandom'
+import crypto from 'msrcrypto'
+import '@zxing/text-encoding' // TextEncoder / TextDecoder
+
+export const whenWebCrypto = new Promise(async (resolve, reject) => {
+  try {
+    const bytes = await generateSecureRandom(48)
+    crypto.initPrng(Array.from(bytes))
+
+    // @ts-ignore global.window exists -prf
+    if (!global.window.crypto) {
+      // @ts-ignore global.window exists -prf
+      global.window.crypto = crypto
+    }
+    resolve(true)
+  } catch (e: any) {
+    reject(e)
+  }
+})
+
+export const webcrypto = crypto