from typing import *

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def generate_secret() -> bytes:
    '''
    Generate secret key.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def publickey(secret_key: bytes) -> bytes:
    '''
    Computes public key from secret key.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def sign(secret_key: bytes, message: bytes, hasher: str='') -> bytes:
    '''
    Uses secret key to produce the signature of message.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def sign_ext(secret_key: bytes, secret_extension: bytes, message: bytes) -> bytes:
    '''
    Uses secret key to produce the cardano signature of message.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def verify(public_key: bytes, signature: bytes, message: bytes) -> bool:
    '''
    Uses public key to verify the signature of the message.
    Returns True on success.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def cosi_combine_publickeys(public_keys: List[bytes]) -> bytes:
    '''
    Combines a list of public keys used in COSI cosigning scheme.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def cosi_combine_signatures(R: bytes, signatures: List[bytes]) -> bytes:
    '''
    Combines a list of signatures used in COSI cosigning scheme.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-ed25519.h
def cosi_sign(secret_key: bytes, message: bytes, nonce: bytes, sigR: bytes, combined_pubkey: bytes) -> bytes:
    '''
    Produce signature of message using COSI cosigning scheme.
    '''