Untyped Data Signing

Submitted by (6) Lambda, also found by 0x1f8b, 0x52, horsefacts, vlad_bochok, and wastew

Summary:

https://code4rena.com/reports/2022-08-rigor/#h-01-untyped-data-signing

1. Signature reuse across different Rigor projects

2. Signature reuse across different chains

3. Signature reuse across functions

4. Signature reuse from different Ethereum projects & phishing

Mitigation:

follow EIP-712: https://eips.ethereum.org/EIPS/eip-712

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