ECC (ECDSA) functions

int eth_ecdsa_pubkey_get(uint8_t *dest, const uint8_t *privkey)

Extracts public key from private key.

Parameters

  • dest – [out] A pointer to 64-byte array where the public key will be placed.

  • privkey – [in] A pointer to 32-byte array to read the private key from.

Returns

1 on success, -1 otherwise.

int eth_ecdsa_sign(struct eth_ecdsa_signature *dest, const uint8_t *privkey, const uint8_t *data32)

Creates an ECDSA signature.

Parameters

  • dest – [out] A pointer to eth_ecdsa_signature where the signature will be placed..

  • privkey – [in] A pointer to 32-byte array to read the private key from.

  • data32 – [in] A pointer to 32-byte input data.

Returns

1 on success, -1 otherwise.

struct eth_ecdsa_signature

Holds ECDSA signature.

Public Members

uint8_t r[32]

R value.

uint8_t s[32]

S value.

int recid

Recovery id.