CGGI

A dialect for types and operations in the CGGI cryptosystem

CGGI attributes

CGGIParamsAttr

Syntax:

#cggi.cggi_params<
  ::mlir::heir::lwe::RLWEParamsAttr,   # rlweParams
  unsigned,   # bsk_noise_variance
  unsigned,   # bsk_gadget_base_log
  unsigned,   # bsk_gadget_num_levels
  unsigned,   # ksk_noise_variance
  unsigned,   # ksk_gadget_base_log
  unsigned   # ksk_gadget_num_levels
>

Parameters:

ParameterC++ typeDescription
rlweParams::mlir::heir::lwe::RLWEParamsAttr
bsk_noise_varianceunsigned
bsk_gadget_base_logunsigned
bsk_gadget_num_levelsunsigned
ksk_noise_varianceunsigned
ksk_gadget_base_logunsigned
ksk_gadget_num_levelsunsigned

CGGI ops

cggi.and (heir::cggi::AndOp)

Logical AND of two ciphertexts.

Syntax:

operation ::= `cggi.and` operands attr-dict `:` qualified(type($output))

Traits: AlwaysSpeculatableImplTrait, Commutative, Elementwise, SameOperandsAndResultType, Scalarizable

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Operands:

OperandDescription
lhsciphertext-like
rhsciphertext-like

Results:

ResultDescription
outputciphertext-like

cggi.lut2 (heir::cggi::Lut2Op)

A lookup table on two inputs.

Syntax:

operation ::= `cggi.lut2` `(` operands `)` attr-dict `:` qualified(type($output))

An op representing a lookup table applied to some number n of ciphertexts encrypting boolean input bits.

Over cleartext bits a, b, c, using n = 3 for example, the operation computed by this function can be interpreted as

  truth_table >> {c, b, a}

where {c, b, a} is the unsigned 3-bit integer with bits c, b, a from most significant bit to least-significant bit. The input are combined into a single ciphertext input to the lookup table using products with plaintexts and sums.

Traits: AlwaysSpeculatableImplTrait, Commutative, Elementwise, Scalarizable

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, LUTOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Attributes:

AttributeMLIR TypeDescription
lookup_table::mlir::IntegerAttrAn Attribute containing a integer value

Operands:

OperandDescription
bciphertext-like
aciphertext-like

Results:

ResultDescription
outputciphertext-like

cggi.lut3 (heir::cggi::Lut3Op)

A lookup table on three inputs.

Syntax:

operation ::= `cggi.lut3` `(` operands `)` attr-dict `:` qualified(type($output))

An op representing a lookup table applied to some number n of ciphertexts encrypting boolean input bits.

Over cleartext bits a, b, c, using n = 3 for example, the operation computed by this function can be interpreted as

  truth_table >> {c, b, a}

where {c, b, a} is the unsigned 3-bit integer with bits c, b, a from most significant bit to least-significant bit. The input are combined into a single ciphertext input to the lookup table using products with plaintexts and sums.

Traits: AlwaysSpeculatableImplTrait, Commutative, Elementwise, Scalarizable

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, LUTOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Attributes:

AttributeMLIR TypeDescription
lookup_table::mlir::IntegerAttrAn Attribute containing a integer value

Operands:

OperandDescription
cciphertext-like
bciphertext-like
aciphertext-like

Results:

ResultDescription
outputciphertext-like

cggi.not (heir::cggi::NotOp)

Logical NOT of two ciphertexts

Syntax:

operation ::= `cggi.not` operands attr-dict `:` qualified(type($output))

Traits: AlwaysSpeculatableImplTrait, Involution, SameOperandsAndResultType

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Operands:

OperandDescription
inputA type for LWE ciphertexts

Results:

ResultDescription
outputA type for LWE ciphertexts

cggi.or (heir::cggi::OrOp)

Logical OR of two ciphertexts.

Syntax:

operation ::= `cggi.or` operands attr-dict `:` qualified(type($output))

Traits: AlwaysSpeculatableImplTrait, Commutative, Elementwise, SameOperandsAndResultType, Scalarizable

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Operands:

OperandDescription
lhsciphertext-like
rhsciphertext-like

Results:

ResultDescription
outputciphertext-like

cggi.xor (heir::cggi::XorOp)

Logical XOR of two ciphertexts.

Syntax:

operation ::= `cggi.xor` operands attr-dict `:` qualified(type($output))

Traits: AlwaysSpeculatableImplTrait, Commutative, Elementwise, SameOperandsAndResultType, Scalarizable

Interfaces: ConditionallySpeculatable, InferTypeOpInterface, NoMemoryEffect (MemoryEffectOpInterface)

Effects: MemoryEffects::Effect{}

Operands:

OperandDescription
lhsciphertext-like
rhsciphertext-like

Results:

ResultDescription
outputciphertext-like