Operations

Compute over private state

Inco exposes mathematical and logical operations over encrypted data. Note that for each operation that takes 2 arguments (i.e binary types below), you can use either an e-type or a regular variable as the first or second argument. Each operation returns a single e-type as result.

Under the hood, all operations are performing a call to the Inco contract singleton. The Inco contract checks access control rules and emits an event for each operation

Example usage

euint256 a = e.asEuint256(2);
euint256 b = e.asEuint256(3);
euint256 c = a.add(b); // c = 5 (encrypted)

Supported math operations

All these operations return an euint256.

Name	Function	Type
Addition	e.add	Binary
Subtraction	e.sub	Binary
Multiplication	e.mul	Binary
Division	e.div	Binary
Remainder	e.rem	Binary
BitAnd	e.and	Binary
BitOr	e.or	Binary
BitXor	e.xor	Binary
Shift Right	e.shr	Binary
Shift Left	e.shl	Binary
Rotate Right	e.rotr	Binary
Rotate Left	e.rotl	Binary

Supported comparison operations

Name	Function	Type	Returns
Equal	e.eq	Binary	ebool
Not equal	e.ne	Binary	ebool
Greater than or equal	e.ge	Binary	ebool
Greater than	e.gt	Binary	ebool
Less than or equal	e.le	Binary	ebool
Less than	e.lt	Binary	ebool
Min	e.min	Binary	euint256
Max	e.max	Binary	euint256
Not	e.not	Unary	ebool

Generate a encrypted random number

euint256 randomNumber = e.rand();