Struct cardano_serialization_lib::crypto::Bip32PublicKey
source · pub struct Bip32PublicKey(_);Implementations§
source§impl Bip32PublicKey
impl Bip32PublicKey
sourcepub fn derive(&self, index: u32) -> Result<Bip32PublicKey, JsError>
pub fn derive(&self, index: u32) -> Result<Bip32PublicKey, JsError>
derive this public key with the given index.
Errors
If the index is not a soft derivation index (< 0x80000000) then calling this method will fail.
Security considerations
- hard derivation index cannot be soft derived with the public key
Hard derivation vs Soft derivation
If you pass an index below 0x80000000 then it is a soft derivation. The advantage of soft derivation is that it is possible to derive the public key too. I.e. derivation the private key with a soft derivation index and then retrieving the associated public key is equivalent to deriving the public key associated to the parent private key.
Hard derivation index does not allow public key derivation.
This is why deriving the private key should not fail while deriving the public key may fail (if the derivation index is invalid).
sourcepub fn to_raw_key(&self) -> PublicKey
pub fn to_raw_key(&self) -> PublicKey
Examples found in repository?
More examples
src/utils.rs (line 1192)
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pub fn make_daedalus_bootstrap_witness(
tx_body_hash: &TransactionHash,
addr: &ByronAddress,
key: &LegacyDaedalusPrivateKey,
) -> BootstrapWitness {
let chain_code = key.chaincode();
let pubkey = Bip32PublicKey::from_bytes(&key.0.to_public().as_ref()).unwrap();
let vkey = Vkey::new(&pubkey.to_raw_key());
let signature =
Ed25519Signature::from_bytes(key.0.sign(&tx_body_hash.to_bytes()).as_ref().to_vec())
.unwrap();
BootstrapWitness::new(&vkey, &signature, chain_code, addr.attributes())
}
#[wasm_bindgen]
pub fn make_icarus_bootstrap_witness(
tx_body_hash: &TransactionHash,
addr: &ByronAddress,
key: &Bip32PrivateKey,
) -> BootstrapWitness {
let chain_code = key.chaincode();
let raw_key = key.to_raw_key();
let vkey = Vkey::new(&raw_key.to_public());
let signature = raw_key.sign(&tx_body_hash.to_bytes());
BootstrapWitness::new(&vkey, &signature, chain_code, addr.attributes())
}
#[wasm_bindgen]
pub fn make_vkey_witness(tx_body_hash: &TransactionHash, sk: &PrivateKey) -> Vkeywitness {
let sig = sk.sign(tx_body_hash.0.as_ref());
Vkeywitness::new(&Vkey::new(&sk.to_public()), &sig)
}
#[wasm_bindgen]
pub fn hash_auxiliary_data(auxiliary_data: &AuxiliaryData) -> AuxiliaryDataHash {
AuxiliaryDataHash::from(blake2b256(&auxiliary_data.to_bytes()))
}
#[wasm_bindgen]
pub fn hash_transaction(tx_body: &TransactionBody) -> TransactionHash {
TransactionHash::from(crypto::blake2b256(tx_body.to_bytes().as_ref()))
}
#[wasm_bindgen]
pub fn hash_plutus_data(plutus_data: &PlutusData) -> DataHash {
DataHash::from(blake2b256(&plutus_data.to_bytes()))
}
#[wasm_bindgen]
pub fn hash_script_data(
redeemers: &Redeemers,
cost_models: &Costmdls,
datums: Option<PlutusList>,
) -> ScriptDataHash {
let mut buf = Vec::new();
if redeemers.len() == 0 && datums.is_some() {
/*
; Finally, note that in the case that a transaction includes datums but does not
; include any redeemers, the script data format becomes (in hex):
; [ 80 | datums | A0 ]
; corresponding to a CBOR empty list and an empty map (our apologies).
*/
buf.push(0x80);
if let Some(d) = &datums {
buf.extend(d.to_bytes());
}
buf.push(0xA0);
} else {
/*
; script data format:
; [ redeemers | datums | language views ]
; The redeemers are exactly the data present in the transaction witness set.
; Similarly for the datums, if present. If no datums are provided, the middle
; field is an empty string.
*/
buf.extend(redeemers.to_bytes());
if let Some(d) = &datums {
buf.extend(d.to_bytes());
}
buf.extend(cost_models.language_views_encoding());
}
ScriptDataHash::from(blake2b256(&buf))
}
// wasm-bindgen can't accept Option without clearing memory, so we avoid exposing this in WASM
pub fn internal_get_implicit_input(
withdrawals: &Option<Withdrawals>,
certs: &Option<Certificates>,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Value, JsError> {
let withdrawal_sum = match &withdrawals {
None => to_bignum(0),
Some(x) => {
x.0.values()
.try_fold(to_bignum(0), |acc, ref withdrawal_amt| {
acc.checked_add(&withdrawal_amt)
})?
}
};
let certificate_refund = match &certs {
None => to_bignum(0),
Some(certs) => certs
.0
.iter()
.try_fold(to_bignum(0), |acc, ref cert| match &cert.0 {
CertificateEnum::PoolRetirement(_cert) => acc.checked_add(&pool_deposit),
CertificateEnum::StakeDeregistration(_cert) => acc.checked_add(&key_deposit),
_ => Ok(acc),
})?,
};
Ok(Value::new(
&withdrawal_sum.checked_add(&certificate_refund)?,
))
}
pub fn internal_get_deposit(
certs: &Option<Certificates>,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Coin, JsError> {
let certificate_refund = match &certs {
None => to_bignum(0),
Some(certs) => certs
.0
.iter()
.try_fold(to_bignum(0), |acc, ref cert| match &cert.0 {
CertificateEnum::PoolRegistration(_cert) => acc.checked_add(&pool_deposit),
CertificateEnum::StakeRegistration(_cert) => acc.checked_add(&key_deposit),
_ => Ok(acc),
})?,
};
Ok(certificate_refund)
}
#[wasm_bindgen]
pub fn get_implicit_input(
txbody: &TransactionBody,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Value, JsError> {
internal_get_implicit_input(
&txbody.withdrawals,
&txbody.certs,
&pool_deposit,
&key_deposit,
)
}
#[wasm_bindgen]
pub fn get_deposit(
txbody: &TransactionBody,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Coin, JsError> {
internal_get_deposit(&txbody.certs, &pool_deposit, &key_deposit)
}
#[derive(Debug, Clone, Eq, Ord, PartialEq, PartialOrd)]
pub struct MinOutputAdaCalculator {
output: TransactionOutput,
data_cost: DataCost,
}
impl MinOutputAdaCalculator {
pub fn new(output: &TransactionOutput, data_cost: &DataCost) -> Self {
Self {
output: output.clone(),
data_cost: data_cost.clone(),
}
}
pub fn new_empty(data_cost: &DataCost) -> Result<MinOutputAdaCalculator, JsError> {
Ok(Self {
output: MinOutputAdaCalculator::create_fake_output()?,
data_cost: data_cost.clone(),
})
}
pub fn set_address(&mut self, address: &Address) {
self.output.address = address.clone();
}
pub fn set_plutus_data(&mut self, data: &PlutusData) {
self.output.plutus_data = Some(DataOption::Data(data.clone()));
}
pub fn set_data_hash(&mut self, data_hash: &DataHash) {
self.output.plutus_data = Some(DataOption::DataHash(data_hash.clone()));
}
pub fn set_amount(&mut self, amount: &Value) {
self.output.amount = amount.clone();
}
pub fn set_script_ref(&mut self, script_ref: &ScriptRef) {
self.output.script_ref = Some(script_ref.clone());
}
pub fn calculate_ada(&self) -> Result<BigNum, JsError> {
let mut output: TransactionOutput = self.output.clone();
for _ in 0..3 {
let required_coin = Self::calc_required_coin(&output, &self.data_cost)?;
if output.amount.coin.less_than(&required_coin) {
output.amount.coin = required_coin.clone();
} else {
return Ok(required_coin);
}
}
output.amount.coin = to_bignum(u64::MAX);
Ok(Self::calc_required_coin(&output, &self.data_cost)?)
}
fn create_fake_output() -> Result<TransactionOutput, JsError> {
let fake_base_address: Address = Address::from_bech32("addr_test1qpu5vlrf4xkxv2qpwngf6cjhtw542ayty80v8dyr49rf5ewvxwdrt70qlcpeeagscasafhffqsxy36t90ldv06wqrk2qum8x5w")?;
let fake_value: Value = Value::new(&to_bignum(1000000));
Ok(TransactionOutput::new(&fake_base_address, &fake_value))
}
pub fn calc_size_cost(data_cost: &DataCost, size: usize) -> Result<Coin, JsError> {
//according to https://hydra.iohk.io/build/15339994/download/1/babbage-changes.pdf
//See on the page 9 getValue txout
to_bignum(size as u64).checked_add(&to_bignum(160))?
.checked_mul(&data_cost.coins_per_byte())
}
pub fn calc_required_coin(output: &TransactionOutput, data_cost: &DataCost) -> Result<Coin, JsError> {
//according to https://hydra.iohk.io/build/15339994/download/1/babbage-changes.pdf
//See on the page 9 getValue txout
Self::calc_size_cost(data_cost,output.to_bytes().len())
}
}
///returns minimal amount of ada for the output for case when the amount is included to the output
#[wasm_bindgen]
pub fn min_ada_for_output(
output: &TransactionOutput,
data_cost: &DataCost,
) -> Result<BigNum, JsError> {
MinOutputAdaCalculator::new(output, data_cost).calculate_ada()
}
/// !!! DEPRECATED !!!
/// This function uses outdated set of arguments.
/// Use `min_ada_for_output` instead
#[wasm_bindgen]
#[deprecated(since = "11.0.0", note = "Use `min_ada_for_output` instead")]
pub fn min_ada_required(
assets: &Value,
has_data_hash: bool, // whether the output includes a data hash
coins_per_utxo_word: &BigNum, // protocol parameter (in lovelace)
) -> Result<BigNum, JsError> {
let data_cost = DataCost::new_coins_per_word(coins_per_utxo_word);
let mut calc = MinOutputAdaCalculator::new_empty(&data_cost)?;
calc.set_amount(assets);
if has_data_hash {
calc.set_data_hash(&fake_data_hash(0));
}
calc.calculate_ada()
}
/// Used to choosed the schema for a script JSON string
#[wasm_bindgen]
pub enum ScriptSchema {
Wallet,
Node,
}
/// Receives a script JSON string
/// and returns a NativeScript.
/// Cardano Wallet and Node styles are supported.
///
/// * wallet: https://github.com/input-output-hk/cardano-wallet/blob/master/specifications/api/swagger.yaml
/// * node: https://github.com/input-output-hk/cardano-node/blob/master/doc/reference/simple-scripts.md
///
/// self_xpub is expected to be a Bip32PublicKey as hex-encoded bytes
#[wasm_bindgen]
pub fn encode_json_str_to_native_script(
json: &str,
self_xpub: &str,
schema: ScriptSchema,
) -> Result<NativeScript, JsError> {
let value: serde_json::Value =
serde_json::from_str(&json).map_err(|e| JsError::from_str(&e.to_string()))?;
let native_script = match schema {
ScriptSchema::Wallet => encode_wallet_value_to_native_script(value, self_xpub)?,
ScriptSchema::Node => todo!(),
};
Ok(native_script)
}
fn encode_wallet_value_to_native_script(
value: serde_json::Value,
self_xpub: &str,
) -> Result<NativeScript, JsError> {
match value {
serde_json::Value::Object(map)
if map.contains_key("cosigners") && map.contains_key("template") =>
{
let mut cosigners = HashMap::new();
if let serde_json::Value::Object(cosigner_map) = map.get("cosigners").unwrap() {
for (key, value) in cosigner_map.iter() {
if let serde_json::Value::String(xpub) = value {
if xpub == "self" {
cosigners.insert(key.to_owned(), self_xpub.to_owned());
} else {
cosigners.insert(key.to_owned(), xpub.to_owned());
}
} else {
return Err(JsError::from_str("cosigner value must be a string"));
}
}
} else {
return Err(JsError::from_str("cosigners must be a map"));
}
let template = map.get("template").unwrap();
let template_native_script = encode_template_to_native_script(template, &cosigners)?;
Ok(template_native_script)
}
_ => Err(JsError::from_str(
"top level must be an object. cosigners and template keys are required",
)),
}
}
fn encode_template_to_native_script(
template: &serde_json::Value,
cosigners: &HashMap<String, String>,
) -> Result<NativeScript, JsError> {
match template {
serde_json::Value::String(cosigner) => {
if let Some(xpub) = cosigners.get(cosigner) {
let bytes = Vec::from_hex(xpub).map_err(|e| JsError::from_str(&e.to_string()))?;
let public_key = Bip32PublicKey::from_bytes(&bytes)?;
Ok(NativeScript::new_script_pubkey(&ScriptPubkey::new(
&public_key.to_raw_key().hash(),
)))
} else {
Err(JsError::from_str(&format!(
"cosigner {} not found",
cosigner
)))
}
}
serde_json::Value::Object(map) if map.contains_key("all") => {
let mut all = NativeScripts::new();
if let serde_json::Value::Array(array) = map.get("all").unwrap() {
for val in array {
all.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("all must be an array"));
}
Ok(NativeScript::new_script_all(&ScriptAll::new(&all)))
}
serde_json::Value::Object(map) if map.contains_key("any") => {
let mut any = NativeScripts::new();
if let serde_json::Value::Array(array) = map.get("any").unwrap() {
for val in array {
any.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("any must be an array"));
}
Ok(NativeScript::new_script_any(&ScriptAny::new(&any)))
}
serde_json::Value::Object(map) if map.contains_key("some") => {
if let serde_json::Value::Object(some) = map.get("some").unwrap() {
if some.contains_key("at_least") && some.contains_key("from") {
let n = if let serde_json::Value::Number(at_least) =
some.get("at_least").unwrap()
{
if let Some(n) = at_least.as_u64() {
n as u32
} else {
return Err(JsError::from_str("at_least must be an integer"));
}
} else {
return Err(JsError::from_str("at_least must be an integer"));
};
let mut from_scripts = NativeScripts::new();
if let serde_json::Value::Array(array) = some.get("from").unwrap() {
for val in array {
from_scripts.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("from must be an array"));
}
Ok(NativeScript::new_script_n_of_k(&ScriptNOfK::new(
n,
&from_scripts,
)))
} else {
Err(JsError::from_str("some must contain at_least and from"))
}
} else {
Err(JsError::from_str("some must be an object"))
}
}
serde_json::Value::Object(map) if map.contains_key("active_from") => {
if let serde_json::Value::Number(active_from) = map.get("active_from").unwrap() {
if let Some(n) = active_from.as_u64() {
let slot: SlotBigNum = n.into();
let time_lock_start = TimelockStart::new_timelockstart(&slot);
Ok(NativeScript::new_timelock_start(&time_lock_start))
} else {
Err(JsError::from_str(
"active_from slot must be an integer greater than or equal to 0",
))
}
} else {
Err(JsError::from_str("active_from slot must be a number"))
}
}
serde_json::Value::Object(map) if map.contains_key("active_until") => {
if let serde_json::Value::Number(active_until) = map.get("active_until").unwrap() {
if let Some(n) = active_until.as_u64() {
let slot: SlotBigNum = n.into();
let time_lock_expiry = TimelockExpiry::new_timelockexpiry(&slot);
Ok(NativeScript::new_timelock_expiry(&time_lock_expiry))
} else {
Err(JsError::from_str(
"active_until slot must be an integer greater than or equal to 0",
))
}
} else {
Err(JsError::from_str("active_until slot must be a number"))
}
}
_ => Err(JsError::from_str("invalid template format")),
}
}sourcepub fn from_bytes(bytes: &[u8]) -> Result<Bip32PublicKey, JsError>
pub fn from_bytes(bytes: &[u8]) -> Result<Bip32PublicKey, JsError>
Examples found in repository?
More examples
src/utils.rs (line 1191)
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pub fn make_daedalus_bootstrap_witness(
tx_body_hash: &TransactionHash,
addr: &ByronAddress,
key: &LegacyDaedalusPrivateKey,
) -> BootstrapWitness {
let chain_code = key.chaincode();
let pubkey = Bip32PublicKey::from_bytes(&key.0.to_public().as_ref()).unwrap();
let vkey = Vkey::new(&pubkey.to_raw_key());
let signature =
Ed25519Signature::from_bytes(key.0.sign(&tx_body_hash.to_bytes()).as_ref().to_vec())
.unwrap();
BootstrapWitness::new(&vkey, &signature, chain_code, addr.attributes())
}
#[wasm_bindgen]
pub fn make_icarus_bootstrap_witness(
tx_body_hash: &TransactionHash,
addr: &ByronAddress,
key: &Bip32PrivateKey,
) -> BootstrapWitness {
let chain_code = key.chaincode();
let raw_key = key.to_raw_key();
let vkey = Vkey::new(&raw_key.to_public());
let signature = raw_key.sign(&tx_body_hash.to_bytes());
BootstrapWitness::new(&vkey, &signature, chain_code, addr.attributes())
}
#[wasm_bindgen]
pub fn make_vkey_witness(tx_body_hash: &TransactionHash, sk: &PrivateKey) -> Vkeywitness {
let sig = sk.sign(tx_body_hash.0.as_ref());
Vkeywitness::new(&Vkey::new(&sk.to_public()), &sig)
}
#[wasm_bindgen]
pub fn hash_auxiliary_data(auxiliary_data: &AuxiliaryData) -> AuxiliaryDataHash {
AuxiliaryDataHash::from(blake2b256(&auxiliary_data.to_bytes()))
}
#[wasm_bindgen]
pub fn hash_transaction(tx_body: &TransactionBody) -> TransactionHash {
TransactionHash::from(crypto::blake2b256(tx_body.to_bytes().as_ref()))
}
#[wasm_bindgen]
pub fn hash_plutus_data(plutus_data: &PlutusData) -> DataHash {
DataHash::from(blake2b256(&plutus_data.to_bytes()))
}
#[wasm_bindgen]
pub fn hash_script_data(
redeemers: &Redeemers,
cost_models: &Costmdls,
datums: Option<PlutusList>,
) -> ScriptDataHash {
let mut buf = Vec::new();
if redeemers.len() == 0 && datums.is_some() {
/*
; Finally, note that in the case that a transaction includes datums but does not
; include any redeemers, the script data format becomes (in hex):
; [ 80 | datums | A0 ]
; corresponding to a CBOR empty list and an empty map (our apologies).
*/
buf.push(0x80);
if let Some(d) = &datums {
buf.extend(d.to_bytes());
}
buf.push(0xA0);
} else {
/*
; script data format:
; [ redeemers | datums | language views ]
; The redeemers are exactly the data present in the transaction witness set.
; Similarly for the datums, if present. If no datums are provided, the middle
; field is an empty string.
*/
buf.extend(redeemers.to_bytes());
if let Some(d) = &datums {
buf.extend(d.to_bytes());
}
buf.extend(cost_models.language_views_encoding());
}
ScriptDataHash::from(blake2b256(&buf))
}
// wasm-bindgen can't accept Option without clearing memory, so we avoid exposing this in WASM
pub fn internal_get_implicit_input(
withdrawals: &Option<Withdrawals>,
certs: &Option<Certificates>,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Value, JsError> {
let withdrawal_sum = match &withdrawals {
None => to_bignum(0),
Some(x) => {
x.0.values()
.try_fold(to_bignum(0), |acc, ref withdrawal_amt| {
acc.checked_add(&withdrawal_amt)
})?
}
};
let certificate_refund = match &certs {
None => to_bignum(0),
Some(certs) => certs
.0
.iter()
.try_fold(to_bignum(0), |acc, ref cert| match &cert.0 {
CertificateEnum::PoolRetirement(_cert) => acc.checked_add(&pool_deposit),
CertificateEnum::StakeDeregistration(_cert) => acc.checked_add(&key_deposit),
_ => Ok(acc),
})?,
};
Ok(Value::new(
&withdrawal_sum.checked_add(&certificate_refund)?,
))
}
pub fn internal_get_deposit(
certs: &Option<Certificates>,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Coin, JsError> {
let certificate_refund = match &certs {
None => to_bignum(0),
Some(certs) => certs
.0
.iter()
.try_fold(to_bignum(0), |acc, ref cert| match &cert.0 {
CertificateEnum::PoolRegistration(_cert) => acc.checked_add(&pool_deposit),
CertificateEnum::StakeRegistration(_cert) => acc.checked_add(&key_deposit),
_ => Ok(acc),
})?,
};
Ok(certificate_refund)
}
#[wasm_bindgen]
pub fn get_implicit_input(
txbody: &TransactionBody,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Value, JsError> {
internal_get_implicit_input(
&txbody.withdrawals,
&txbody.certs,
&pool_deposit,
&key_deposit,
)
}
#[wasm_bindgen]
pub fn get_deposit(
txbody: &TransactionBody,
pool_deposit: &BigNum, // // protocol parameter
key_deposit: &BigNum, // protocol parameter
) -> Result<Coin, JsError> {
internal_get_deposit(&txbody.certs, &pool_deposit, &key_deposit)
}
#[derive(Debug, Clone, Eq, Ord, PartialEq, PartialOrd)]
pub struct MinOutputAdaCalculator {
output: TransactionOutput,
data_cost: DataCost,
}
impl MinOutputAdaCalculator {
pub fn new(output: &TransactionOutput, data_cost: &DataCost) -> Self {
Self {
output: output.clone(),
data_cost: data_cost.clone(),
}
}
pub fn new_empty(data_cost: &DataCost) -> Result<MinOutputAdaCalculator, JsError> {
Ok(Self {
output: MinOutputAdaCalculator::create_fake_output()?,
data_cost: data_cost.clone(),
})
}
pub fn set_address(&mut self, address: &Address) {
self.output.address = address.clone();
}
pub fn set_plutus_data(&mut self, data: &PlutusData) {
self.output.plutus_data = Some(DataOption::Data(data.clone()));
}
pub fn set_data_hash(&mut self, data_hash: &DataHash) {
self.output.plutus_data = Some(DataOption::DataHash(data_hash.clone()));
}
pub fn set_amount(&mut self, amount: &Value) {
self.output.amount = amount.clone();
}
pub fn set_script_ref(&mut self, script_ref: &ScriptRef) {
self.output.script_ref = Some(script_ref.clone());
}
pub fn calculate_ada(&self) -> Result<BigNum, JsError> {
let mut output: TransactionOutput = self.output.clone();
for _ in 0..3 {
let required_coin = Self::calc_required_coin(&output, &self.data_cost)?;
if output.amount.coin.less_than(&required_coin) {
output.amount.coin = required_coin.clone();
} else {
return Ok(required_coin);
}
}
output.amount.coin = to_bignum(u64::MAX);
Ok(Self::calc_required_coin(&output, &self.data_cost)?)
}
fn create_fake_output() -> Result<TransactionOutput, JsError> {
let fake_base_address: Address = Address::from_bech32("addr_test1qpu5vlrf4xkxv2qpwngf6cjhtw542ayty80v8dyr49rf5ewvxwdrt70qlcpeeagscasafhffqsxy36t90ldv06wqrk2qum8x5w")?;
let fake_value: Value = Value::new(&to_bignum(1000000));
Ok(TransactionOutput::new(&fake_base_address, &fake_value))
}
pub fn calc_size_cost(data_cost: &DataCost, size: usize) -> Result<Coin, JsError> {
//according to https://hydra.iohk.io/build/15339994/download/1/babbage-changes.pdf
//See on the page 9 getValue txout
to_bignum(size as u64).checked_add(&to_bignum(160))?
.checked_mul(&data_cost.coins_per_byte())
}
pub fn calc_required_coin(output: &TransactionOutput, data_cost: &DataCost) -> Result<Coin, JsError> {
//according to https://hydra.iohk.io/build/15339994/download/1/babbage-changes.pdf
//See on the page 9 getValue txout
Self::calc_size_cost(data_cost,output.to_bytes().len())
}
}
///returns minimal amount of ada for the output for case when the amount is included to the output
#[wasm_bindgen]
pub fn min_ada_for_output(
output: &TransactionOutput,
data_cost: &DataCost,
) -> Result<BigNum, JsError> {
MinOutputAdaCalculator::new(output, data_cost).calculate_ada()
}
/// !!! DEPRECATED !!!
/// This function uses outdated set of arguments.
/// Use `min_ada_for_output` instead
#[wasm_bindgen]
#[deprecated(since = "11.0.0", note = "Use `min_ada_for_output` instead")]
pub fn min_ada_required(
assets: &Value,
has_data_hash: bool, // whether the output includes a data hash
coins_per_utxo_word: &BigNum, // protocol parameter (in lovelace)
) -> Result<BigNum, JsError> {
let data_cost = DataCost::new_coins_per_word(coins_per_utxo_word);
let mut calc = MinOutputAdaCalculator::new_empty(&data_cost)?;
calc.set_amount(assets);
if has_data_hash {
calc.set_data_hash(&fake_data_hash(0));
}
calc.calculate_ada()
}
/// Used to choosed the schema for a script JSON string
#[wasm_bindgen]
pub enum ScriptSchema {
Wallet,
Node,
}
/// Receives a script JSON string
/// and returns a NativeScript.
/// Cardano Wallet and Node styles are supported.
///
/// * wallet: https://github.com/input-output-hk/cardano-wallet/blob/master/specifications/api/swagger.yaml
/// * node: https://github.com/input-output-hk/cardano-node/blob/master/doc/reference/simple-scripts.md
///
/// self_xpub is expected to be a Bip32PublicKey as hex-encoded bytes
#[wasm_bindgen]
pub fn encode_json_str_to_native_script(
json: &str,
self_xpub: &str,
schema: ScriptSchema,
) -> Result<NativeScript, JsError> {
let value: serde_json::Value =
serde_json::from_str(&json).map_err(|e| JsError::from_str(&e.to_string()))?;
let native_script = match schema {
ScriptSchema::Wallet => encode_wallet_value_to_native_script(value, self_xpub)?,
ScriptSchema::Node => todo!(),
};
Ok(native_script)
}
fn encode_wallet_value_to_native_script(
value: serde_json::Value,
self_xpub: &str,
) -> Result<NativeScript, JsError> {
match value {
serde_json::Value::Object(map)
if map.contains_key("cosigners") && map.contains_key("template") =>
{
let mut cosigners = HashMap::new();
if let serde_json::Value::Object(cosigner_map) = map.get("cosigners").unwrap() {
for (key, value) in cosigner_map.iter() {
if let serde_json::Value::String(xpub) = value {
if xpub == "self" {
cosigners.insert(key.to_owned(), self_xpub.to_owned());
} else {
cosigners.insert(key.to_owned(), xpub.to_owned());
}
} else {
return Err(JsError::from_str("cosigner value must be a string"));
}
}
} else {
return Err(JsError::from_str("cosigners must be a map"));
}
let template = map.get("template").unwrap();
let template_native_script = encode_template_to_native_script(template, &cosigners)?;
Ok(template_native_script)
}
_ => Err(JsError::from_str(
"top level must be an object. cosigners and template keys are required",
)),
}
}
fn encode_template_to_native_script(
template: &serde_json::Value,
cosigners: &HashMap<String, String>,
) -> Result<NativeScript, JsError> {
match template {
serde_json::Value::String(cosigner) => {
if let Some(xpub) = cosigners.get(cosigner) {
let bytes = Vec::from_hex(xpub).map_err(|e| JsError::from_str(&e.to_string()))?;
let public_key = Bip32PublicKey::from_bytes(&bytes)?;
Ok(NativeScript::new_script_pubkey(&ScriptPubkey::new(
&public_key.to_raw_key().hash(),
)))
} else {
Err(JsError::from_str(&format!(
"cosigner {} not found",
cosigner
)))
}
}
serde_json::Value::Object(map) if map.contains_key("all") => {
let mut all = NativeScripts::new();
if let serde_json::Value::Array(array) = map.get("all").unwrap() {
for val in array {
all.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("all must be an array"));
}
Ok(NativeScript::new_script_all(&ScriptAll::new(&all)))
}
serde_json::Value::Object(map) if map.contains_key("any") => {
let mut any = NativeScripts::new();
if let serde_json::Value::Array(array) = map.get("any").unwrap() {
for val in array {
any.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("any must be an array"));
}
Ok(NativeScript::new_script_any(&ScriptAny::new(&any)))
}
serde_json::Value::Object(map) if map.contains_key("some") => {
if let serde_json::Value::Object(some) = map.get("some").unwrap() {
if some.contains_key("at_least") && some.contains_key("from") {
let n = if let serde_json::Value::Number(at_least) =
some.get("at_least").unwrap()
{
if let Some(n) = at_least.as_u64() {
n as u32
} else {
return Err(JsError::from_str("at_least must be an integer"));
}
} else {
return Err(JsError::from_str("at_least must be an integer"));
};
let mut from_scripts = NativeScripts::new();
if let serde_json::Value::Array(array) = some.get("from").unwrap() {
for val in array {
from_scripts.add(&encode_template_to_native_script(val, cosigners)?);
}
} else {
return Err(JsError::from_str("from must be an array"));
}
Ok(NativeScript::new_script_n_of_k(&ScriptNOfK::new(
n,
&from_scripts,
)))
} else {
Err(JsError::from_str("some must contain at_least and from"))
}
} else {
Err(JsError::from_str("some must be an object"))
}
}
serde_json::Value::Object(map) if map.contains_key("active_from") => {
if let serde_json::Value::Number(active_from) = map.get("active_from").unwrap() {
if let Some(n) = active_from.as_u64() {
let slot: SlotBigNum = n.into();
let time_lock_start = TimelockStart::new_timelockstart(&slot);
Ok(NativeScript::new_timelock_start(&time_lock_start))
} else {
Err(JsError::from_str(
"active_from slot must be an integer greater than or equal to 0",
))
}
} else {
Err(JsError::from_str("active_from slot must be a number"))
}
}
serde_json::Value::Object(map) if map.contains_key("active_until") => {
if let serde_json::Value::Number(active_until) = map.get("active_until").unwrap() {
if let Some(n) = active_until.as_u64() {
let slot: SlotBigNum = n.into();
let time_lock_expiry = TimelockExpiry::new_timelockexpiry(&slot);
Ok(NativeScript::new_timelock_expiry(&time_lock_expiry))
} else {
Err(JsError::from_str(
"active_until slot must be an integer greater than or equal to 0",
))
}
} else {
Err(JsError::from_str("active_until slot must be a number"))
}
}
_ => Err(JsError::from_str("invalid template format")),
}
}sourcepub fn as_bytes(&self) -> Vec<u8>
pub fn as_bytes(&self) -> Vec<u8>
Examples found in repository?
More examples
src/address.rs (line 297)
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
pub fn icarus_from_key(key: &Bip32PublicKey, protocol_magic: u32) -> ByronAddress {
let mut out = [0u8; 64];
out.clone_from_slice(&key.as_bytes());
// need to ensure we use None for mainnet since Byron-era addresses omitted the network id
let filtered_protocol_magic = if protocol_magic == NetworkInfo::mainnet().protocol_magic() {
None
} else {
Some(protocol_magic)
};
ByronAddress(ExtendedAddr::new_simple(
&XPub::from_bytes(out),
filtered_protocol_magic,
))
}