criptolib

class CryptoLib

Bases: object

A class used to represent the CryptoLib native contract

hash: boa3.builtin.type.UInt160

classmethod murmur32(data: bytes, seed: int) → bytes

Computes the hash value for the specified byte array using the murmur32 algorithm.

Parameters

• data (bytes) – the input to compute the hash code for

• seed (int) – the seed of the murmur32 hash function

Returns

the hash value

Return type

bytes

classmethod sha256(key: Any) → bytes

Encrypts a key using SHA-256.

Parameters

key (Any) – the key to be encrypted

Returns

a byte value that represents the encrypted key

Return type

bytes

classmethod ripemd160(key: Any) → bytes

Encrypts a key using RIPEMD-160.

Parameters

key (Any) – the key to be encrypted

Returns

a byte value that represents the encrypted key

Return type

bytes

classmethod verify_with_ecdsa(message: bytes, pubkey: boa3.builtin.type.ECPoint, signature: bytes, curve: boa3.internal.neo3.contracts.namedcurve.NamedCurve) → bool

Using the elliptic curve, it checks if the signature of the message was originally produced by the public key.

Parameters

• message (bytes) – the encrypted message

• pubkey (ECPoint) – the public key that might have created the item

• signature (bytes) – the signature of the item

• curve (NamedCurve) – the curve that will be used by the ecdsa

Returns

a boolean value that represents whether the signature is valid

Return type

bool

class NamedCurve(value)

Bases: enum.IntFlag

Represents the named curve used in ECDSA.

SECP256K1

The secp256k1 curve.

SECP256R1

The secp256r1 curve, which known as prime256v1 or nistP-256.