Trait concrete_core::specification::engines::GlweCiphertextVectorTrivialEncryptionEngine

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pub trait GlweCiphertextVectorTrivialEncryptionEngine<PlaintextVector, CiphertextVector>: AbstractEnginewhere
    PlaintextVector: PlaintextVectorEntity,
    CiphertextVector: GlweCiphertextVectorEntity,{
    fn trivially_encrypt_glwe_ciphertext_vector(
        &mut self,
        glwe_size: GlweSize,
        glwe_ciphertext_count: GlweCiphertextCount,
        input: &PlaintextVector
    ) -> Result<CiphertextVector, GlweCiphertextVectorTrivialEncryptionError<Self::EngineError>>;
    unsafe fn trivially_encrypt_glwe_ciphertext_vector_unchecked(
        &mut self,
        glwe_size: GlweSize,
        glwe_ciphertext_count: GlweCiphertextCount,
        input: &PlaintextVector
    ) -> CiphertextVector;
}
Expand description

A trait for engines trivially encrypting GLWE ciphertext vector.

Semantics

This pure operation generates a GLWE ciphertext vector containing the trivial encryption of the input plaintext vector with the requested glwe_size.

Formal Definition

A trivial encryption uses a zero mask and no noise. It is absolutely not secure, as the body contains a direct copy of the plaintext. However, it is useful for some FHE algorithms taking public information as input. For example, a trivial GLWE encryption of a public lookup table is used in the bootstrap.

Required Methods

Trivially encrypts a plaintext vector into a GLWE ciphertext vector.

Unsafely trivially encrypts a plaintext vector into a GLWE ciphertext vector.

Safety

For the general safety concerns regarding this operation, refer to the different variants of GlweCiphertextVectorTrivialEncryptionError. For safety concerns specific to an engine, refer to the implementer safety section.

Implementors