I have one little question. Suppose I have private key of user in ionic app. Is this enough to make transactions using infura API and web3?

  • Yes that is the only thing needed. – Jaime Sep 12 '18 at 9:59
  • do you mean the API key to the development kit of Ionic or the private key of an Ethereum account? – Nulik Sep 12 '18 at 17:21
  • Ethereum account private key – O. Shekriladze Sep 12 '18 at 20:21

Yes! And the only challenge is how are you going to save that private key in the mobile app. A high level of security is required in order for the users to trust your app. In addition you should provide a way to restore private keys created in the app, either bu providing a 12-word seed like metamask and other crypto wallet managers.

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