async def sign_tx(ctx, msg: StellarSignTx):
if msg.num_operations == 0:
raise ProcessError("Stellar: At least one operation is required")
node = await seed.derive_node(ctx, msg.address_n, consts.STELLAR_CURVE)
pubkey = seed.remove_ed25519_prefix(node.public_key())
w = bytearray()
await _init(ctx, w, pubkey, msg)
_timebounds(w, msg.timebounds_start, msg.timebounds_end)
await _memo(ctx, w, msg)
await _operations(ctx, w, msg.num_operations)
await _final(ctx, w, msg)
# sign
digest = sha256(w).digest()
signature = ed25519.sign(node.private_key(), digest)
# Add the public key for verification that the right account was used for signing
return StellarSignedTx(pubkey, signature)
async def sign_tx(ctx, msg: StellarSignTx, keychain):
await paths.validate_path(ctx, keychain, msg.address_n)
node = keychain.derive(msg.address_n)
pubkey = seed.remove_ed25519_prefix(node.public_key())
if msg.num_operations == 0:
raise ProcessError("Stellar: At least one operation is required")
w = bytearray()
await _init(ctx, w, pubkey, msg)
await _timebounds(ctx, w, msg.timebounds_start, msg.timebounds_end)
await _memo(ctx, w, msg)
await _operations(ctx, w, msg.num_operations)
await _final(ctx, w, msg)
# sign
digest = sha256(w).digest()
signature = ed25519.sign(node.private_key(), digest)
# Add the public key for verification that the right account was used for signing
return StellarSignedTx(public_key=pubkey, signature=signature)