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BGV Parameters

Source: R/params.R
BGVParams.Rd

Constructor for the BGV scheme's CCParams surface. Every argument maps 1:1 to an enabled CCParams<CryptoContextBGVRNS>::Set* method. The 10 BGV-disabled setters (SetEncryptionTechnique, SetMultiplicationTechnique, SetExecutionMode, …) are not exposed; see discovery D013.

Usage

BGVParams(
  plaintext_modulus = NULL,
  multiplicative_depth = NULL,
  scaling_mod_size = NULL,
  scaling_technique = NULL,
  batch_size = NULL,
  first_mod_size = NULL,
  security_level = NULL,
  secret_key_dist = NULL,
  key_switch_technique = NULL,
  ring_dim = NULL,
  digit_size = NULL,
  num_large_digits = NULL,
  standard_deviation = NULL,
  multiparty_mode = NULL,
  threshold_num_of_parties = NULL,
  max_relin_sk_deg = NULL,
  pre_mode = NULL,
  statistical_security = NULL,
  num_adversarial_queries = NULL,
  eval_add_count = NULL,
  key_switch_count = NULL,
  pre_num_hops = NULL
)

Arguments

plaintext_modulus

Integer modulus t for the BGV plaintext space. See the BFV entry for full semantics; BGV shares the same Z_t-valued plaintext model.

multiplicative_depth

Integer multiplicative depth; sizes the ring modulus q. See the BFV entry for the full coupling.

scaling_mod_size

Integer bit-size per scaling modulus in the modulus chain.

scaling_technique

One of ScalingTechnique$FIXEDMANUAL, FIXEDAUTO, FLEXIBLEAUTO (upstream default), FLEXIBLEAUTOEXT. Selects whether the scheme rescales automatically between multiplications (*AUTO*) or leaves it to the caller (FIXEDMANUAL). Every vignette uses an auto mode; pick FIXEDMANUAL only if you need deterministic control over rescale insertion.

batch_size

Integer SIMD slot count; see the BFV entry.

first_mod_size

Integer bit size of the first (largest) prime in the modulus chain. Default leaves OpenFHE to pick. Override only when tuning the noise budget at the top of the chain.

security_level

See the BFV entry.

secret_key_dist

See the BFV entry.

key_switch_technique

See the BFV entry. BGV accepts both BV and HYBRID.

ring_dim

See the BFV entry.

digit_size

See the BFV entry.

num_large_digits

See the BFV entry.

standard_deviation

See the BFV entry.

multiparty_mode

See the BFV entry.

threshold_num_of_parties

See the BFV entry.

max_relin_sk_deg

parity-deferred: see the BFV entry.

pre_mode

parity-deferred: see the BFV entry.

statistical_security

parity-deferred: statistical security parameter (bits), used by the noise-flooding decryption path.

num_adversarial_queries

parity-deferred: upper bound on the number of adversarial queries the noise-flooding path must survive.

eval_add_count

parity-deferred: see the BFV entry.

key_switch_count

parity-deferred: see the BFV entry.

pre_num_hops

parity-deferred: maximum number of hops for proxy re-encryption in BGV. Only meaningful if the PRE feature is enabled.

Value

A BGVParams S7 object.