Struct Malleability

pub struct Malleability {
    pub dissat: Dissat,
    pub safe: bool,
    pub non_malleable: bool,
}

Structure representing the type properties of a fragment which have relevance to malleability analysis

Fields

dissat: Dissat

Properties of dissatisfying inputs

safe: bool

true if satisfactions cannot be created by any 3rd party who has not yet seen a satisfaction. (Hash preimages and signature checks are safe; timelocks are not.) Affects malleability.

non_malleable: bool

Whether a non-malleable satisfaction is guaranteed to exist for the fragment

Implementations

impl Malleability

pub fn is_subtype(&self, other: Self) -> bool

Check whether the self is a subtype of other argument . This checks whether the argument other has attributes which are present in the given Type. This returns true on same arguments a.is_subtype(a) is true.

Trait Implementations

impl Clone for Malleability

fn clone(&self) -> Malleability

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Malleability

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Malleability

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Malleability

fn cmp(&self, other: &Malleability) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Malleability

fn eq(&self, other: &Malleability) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Malleability

fn partial_cmp(&self, other: &Malleability) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Property for Malleability

fn from_true() -> Self

Type property of the True fragment

fn from_false() -> Self

Type property of the False fragment

fn from_pk_k<Ctx: ScriptContext>() -> Self

Type property of the PkK fragment

fn from_pk_h<Ctx: ScriptContext>() -> Self

Type property of the PkH fragment

fn from_multi(_: usize, _: usize) -> Self

Type property of a Multi fragment

fn from_multi_a(_: usize, _: usize) -> Self

Type property of a MultiA fragment

fn from_hash() -> Self

Type property of a hash fragment

fn from_time(_: u32) -> Self

Type property of a timelock

fn cast_alt(self) -> Result<Self, ErrorKind>

Cast using the Alt wrapper

fn cast_swap(self) -> Result<Self, ErrorKind>

Cast using the Swap wrapper

fn cast_check(self) -> Result<Self, ErrorKind>

Cast using the Check wrapper

fn cast_dupif(self) -> Result<Self, ErrorKind>

Cast using the DupIf wrapper

fn cast_verify(self) -> Result<Self, ErrorKind>

Cast using the Verify wrapper

fn cast_nonzero(self) -> Result<Self, ErrorKind>

Cast using the NonZero wrapper

fn cast_zeronotequal(self) -> Result<Self, ErrorKind>

Cast using the ZeroNotEqual wrapper

fn cast_true(self) -> Result<Self, ErrorKind>

Cast by changing [X] to AndV([X], True)

fn cast_or_i_false(self) -> Result<Self, ErrorKind>

Cast by changing [X] to or_i([X], 0) or or_i(0, [X])

fn and_b(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an AndB fragment

fn and_v(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an AndV fragment

fn or_b(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an OrB fragment

fn or_d(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an OrD fragment

fn or_c(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an OrC fragment

fn or_i(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an OrI fragment

fn and_or(a: Self, b: Self, c: Self) -> Result<Self, ErrorKind>

Computes the type of an AndOr fragment

fn threshold<S>(k: usize, n: usize, sub_ck: S) -> Result<Self, ErrorKind>

where S: FnMut(usize) -> Result<Self, ErrorKind>,

Computes the type of an Thresh fragment

fn sanity_checks(&self)

Any extra sanity checks/assertions that should be applied after typechecking

fn from_sha256() -> Self

Type property of a Sha256 hash. Default implementation simply passes through to from_hash

fn from_hash256() -> Self

Type property of a Hash256 hash. Default implementation simply passes through to from_hash

fn from_ripemd160() -> Self

Type property of a Ripemd160 hash. Default implementation simply passes through to from_hash

fn from_hash160() -> Self

Type property of a Hash160 hash. Default implementation simply passes through to from_hash

fn from_after(t: LockTime) -> Self

Type property of an absolute timelock. Default implementation simply passes through to from_time

fn from_older(t: Sequence) -> Self

Type property of a relative timelock. Default implementation simply passes through to from_time

fn cast_unlikely(self) -> Result<Self, ErrorKind>

Cast by changing [X] to or_i([X], 0). Default implementation simply passes through to cast_or_i_false

fn cast_likely(self) -> Result<Self, ErrorKind>

Cast by changing [X] to or_i(0, [X]). Default implementation simply passes through to cast_or_i_false

fn and_n(left: Self, right: Self) -> Result<Self, ErrorKind>

Computes the type of an AndN fragment

fn type_check<Pk, Ctx, C>( fragment: &Terminal<Pk, Ctx>, child: C, ) -> Result<Self, Error<Pk, Ctx>>

where C: FnMut(usize) -> Option<Self>, Pk: MiniscriptKey, Ctx: ScriptContext,

Compute the type of a fragment, given a function to look up the types of its children, if available and relevant for the given fragment

impl Copy for Malleability

impl Eq for Malleability

impl StructuralPartialEq for Malleability