crypto

package

v0.0.7 Latest Latest Go to latest Published: May 4, 2026 License: AGPL-3.0 Imports: 0 Imported by: 0

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Valid go.mod file
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Repository

github.com/vocdoni/davinci-node

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Documentation ¶

Overview ¶

Package crypto provides cryptographic utilities and helper functions for the Vocdoni system. It includes functions for working with finite fields, serialization, and other cryptographic operations.

Constants ¶

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const SignatureCircuitVariableLen = 32 // bytes

SignatureCircuitVariableLen is the standard size in bytes for serialized field elements

Variables ¶

This section is empty.

Functions ¶

func PadToSign ¶

func PadToSign(input []byte) []byte

PadToSign pads the input byte slice to ensure it has a length of SignatureCircuitVariableLen bytes. If the input is shorter, it prepends zeros until the length is equal to SignatureCircuitVariableLen. If the input is longer, it truncates it to the last SignatureCircuitVariableLen bytes.

Types ¶

This section is empty.

Source Files ¶

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helpers.go

Directories ¶

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Path	Synopsis
blobs Blob‑evaluation proof (EIP‑4844 / Proto‑Danksharding)	Blob‑evaluation proof (EIP‑4844 / Proto‑Danksharding)
csp csp package provides the basic methods to create and verify certificates of voters eligibility of a Credential Service Providers (CSP).	csp package provides the basic methods to create and verify certificates of voters eligibility of a Credential Service Providers (CSP).
eddsa
ecc Package ecc provides an interface and implementations for elliptic curve cryptography operations.	Package ecc provides an interface and implementations for elliptic curve cryptography operations.
bjj_gnark
bjj_iden3 Package bjj implements the BabyJubJub elliptic curve operations using the iden3 library.	Package bjj implements the BabyJubJub elliptic curve operations using the iden3 library.
bls12377te
bn254 Package bn254 implements the BN254 elliptic curve operations.	Package bn254 implements the BN254 elliptic curve operations.
curves
format Package format provides helper functions to transform points (x, y) from TwistedEdwards to Reduced TwistedEdwards and vice versa.	Package format provides helper functions to transform points (x, y) from TwistedEdwards to Reduced TwistedEdwards and vice versa.
elgamal Chaum-Pedersen NIZK proof of correct ElGamal decryption	Chaum-Pedersen NIZK proof of correct ElGamal decryption
dkg
dkg/secies
hash
poseidon Package poseidon provides cryptographic hash functions based on the Poseidon hash algorithm.	Package poseidon provides cryptographic hash functions based on the Poseidon hash algorithm.
signatures
ethereum Package ethereum provides cryptographic operations for Ethereum ECDSA signatures.	Package ethereum provides cryptographic operations for Ethereum ECDSA signatures.