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Installation

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Types

  • ebool: Encrypted bool
  • euint256: Encrypted uint256
  • eaddress: Encrypted address

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Math operations

All arithmetic operations return an euint256. All binary operations may use either an euint256 or a regular uint256 as the first or second argument, or two euint256s. Bitwise operations work on both euint256 and ebool types, and may use either encrypted or plain values as arguments.

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Comparison operations

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Multiplexer

  • e.select(ebool, euint256, euint256) returns(euint256): Select between two euint256s based on an ebool condition
  • e.select(ebool, ebool, ebool) returns(ebool): Select between two ebools based on an ebool condition
  • e.select(ebool, eaddress, eaddress) returns(eaddress): Select between two eaddresses based on an ebool condition

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Random Functions

All random functions require payment of the Inco fee.
  • e.rand() returns(euint256): Generate a random euint256 value
  • e.randBounded(uint256) returns(euint256): Generate a random euint256 value bounded by a uint256 upper limit
  • e.randBounded(euint256) returns(euint256): Generate a random euint256 value bounded by an euint256 upper limit

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Inputs

  • e.asEuint256(uint256) returns(euint256): Convert a uint256 to an euint256 (trivial encrypt)
  • e.asEaddress(address) returns(eaddress): Convert an address to an eaddress (trivial encrypt)
  • e.newEuint256(bytes memory input) returns(euint256): Create a new euint256 from a ciphertext
  • e.newEbool(bytes memory input) returns(ebool): Create a new ebool from a ciphertext
  • e.newEaddress(bytes memory input) returns(eaddress): Create a new eaddress from a ciphertext

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Type Casting

  • e.asEuint256(ebool) returns(euint256): Cast an ebool to an euint256

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Access control

  • e.allow(euint256, address): Allow a user to access an euint256 value permanently
  • e.allow(ebool, address): Allow a user to access an ebool value permanently
  • e.allow(eaddress, address): Allow a user to access an eaddress value permanently
  • e.allowThis(euint256): Allow the current contract to access an euint256 value permanently
  • e.allowThis(ebool): Allow the current contract to access an ebool value permanently
  • e.allowThis(eaddress): Allow the current contract to access an eaddress value permanently
  • e.reveal(euint256): Make an euint256 value publicly accessible
  • e.reveal(ebool): Make an ebool value publicly accessible
  • e.reveal(eaddress): Make an eaddress value publicly accessible
  • e.isAllowed(address, euint256) returns(bool): Check if a user is allowed to access an euint256 value