Library Reference

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Types

• ebool: Encrypted bool
• euint256: Encrypted uint256

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Math operations

All these 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

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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 on the first ebool condition

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Inputs

• e.asEuint256(uint256) returns(euint256): Convert a uint256 to an euint256 (trivial encrypt)
• e.asEbool(bool) returns(ebool): Convert a bool to an ebool (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

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Access control

• e.allow(address): Allow a user to access the value permanently
• e.allowThis() : Allow the current contract to access the value permanently
• e.isAllowed(address, e-value) returns(bool) : Check if a user is allowed to access the value (transient or permanent)

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Decryption request

• e.requestDecryption(euint256 value, bytes4 callbackSelector, bytes memory callbackData) returns (uint256 requestId): Request decryption of an euint256
• e.requestDecryption(ebool value, bytes4 callbackSelector, bytes memory callbackData) returns (uint256 requestId): Request decryption of an ebool

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Decryption callback format

function callback(
        uint256 requestId,
        uint256 result,
        bytes memory data
    ) external {
        // code
    }