package octez-libs

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in-package search v0.2.0

A package that contains multiple base libraries used by the Octez suite

Install

Dune Dependency

www.tezos.com Readme Edit opam file Versions (5)

Authors

T

Tezos devteam

Maintainers

C

contact@tezos.com

Sources

tezos-18.0.tar.gz

sha256=dbc3b675aee59c2c574e5d0a771193a2ecfca31e7a5bc5aed66598080596ce1c

sha512=b97ed762b9d24744305c358af0d20f394376b64bfdd758dd4a81775326caf445caa57c4f6445da3dd6468ff492de18e4c14af6f374dfcbb7e4d64b7b720e5e2a

doc/octez-libs.bls12-381-polynomial/Octez_bls12_381_polynomial/Srs/Srs_g2/index.html

Module `Srs.Srs_g2`Source

Sourcetype polynomial = Polynomial.t

Sourcetype t

Sourceval t : t Repr.t

Sourcetype elt = Bls12_381.G2.t

Sourceval empty : t

Sourceval get : t -> int -> elt

get srs i returns the i-th element of srs

Sourceval size : t -> int

Returns the pippenger ctxt size, i.e. the number of elements the context is supposed to be called with

Source

val of_bigstring : 
  ?len:int ->
  Bigstringaf.t ->
  (t, [> `End_of_file of string | `Invalid_point of int ]) result

of_bigstring ~len bs reads len points of G in affine compressed format from bs and returns a Srs. If len is omitted the whole bs is read. The bigstring can be loaded from a file with:

let bigstring_of_file filename =
  let fd = Unix.openfile filename [ Unix.O_RDONLY ] 0o440 in
  Bigarray.array1_of_genarray
  @@ Unix.map_file fd Bigarray.char Bigarray.c_layout false
       [| (* [-1] means read the whole file *) -1 |]
in
Srs_g1.of_bigstring
      (bigstring_of_file ("srs_zcash_g1_21"))
      (1 lsl 5)

or with Lwt:

let bigstring_of_file filename =
  let fd = Unix.openfile filename [ Unix.O_RDONLY ] 0o440 in
  Lwt_bytes.map_file ~fd ~shared:false ()
in

Sourceval generate_insecure : int -> Bls12_381.Fr.t -> t

Sourceval pippenger : ?offset:int -> ?len:int -> t -> polynomial -> elt

pippenger ctxt poly computes the multiscalar exponentiation using the SRS saved in the context and the coefficients of the given polynomial

Sourceval to_array : ?len:int -> t -> elt array