crypto_lib

func GetPublicKey ¶

func GetPublicKey(private_key string) string

Deduces the public key given a private key.

func Hash ¶

func Hash(input1, input2 string) string

Computes the StarkWare version of the Pedersen hash of x and y. Full specification of the hash function can be found here: https://docs.starkware.co/starkex-docs/crypto/pedersen-hash-function

func Sign ¶

func Sign(private_key, message, k string) (string, string)

Signs the given message hash with the provided private_key, with randomness k.

NOTE: k should be a strong cryptographical random, and not repeat. See: https://tools.ietf.org/html/rfc6979.

func Verify ¶

func Verify(stark_key, msg_hash, r, s string) bool

Verifies ECDSA signature of a given message hash z with a given public key. Returns true if public_key signs the message. NOTE: This function assumes that the public_key is on the curve.