Struct fuel_crypto::Message

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#[repr(transparent)]
pub struct Message(_);

Expand description

Normalized signature message

Implementations§

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impl Message

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pub const LEN: usize = 32usize

Memory length of the type

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pub fn new<M>(message: M) -> Selfwhere M: AsRef<[u8]>,

Normalize a message for signature

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pub unsafe fn from_bytes_unchecked(bytes: [u8; 32]) -> Self

Add a conversion from arbitrary slices into owned

Safety

There is no guarantee the provided bytes will be the product of a cryptographically secure hash. Using insecure messages might compromise the security of the signature.

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pub unsafe fn from_slice_unchecked(bytes: &[u8]) -> Self

Add a conversion from arbitrary slices into owned

Safety

This function will not panic if the length of the slice is smaller than Self::LEN. Instead, it will cause undefined behavior and read random disowned bytes.

This function extends the unsafety of Self::from_bytes_unchecked.

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pub unsafe fn as_ref_unchecked(bytes: &[u8]) -> &Self

Copy-free reference cast

Safety

Inputs smaller than Self::LEN will cause undefined behavior.

This function extends the unsafety of Self::from_bytes_unchecked.

Methods from Deref<Target = [u8; 32]>§

1.57.0 · source

pub fn as_slice(&self) -> &[T]

Returns a slice containing the entire array. Equivalent to &s[..].

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pub fn each_ref(&self) -> [&T; N]

🔬This is a nightly-only experimental API. (array_methods)

Borrows each element and returns an array of references with the same size as self.

Example

#![feature(array_methods)]

let floats = [3.1, 2.7, -1.0];
let float_refs: [&f64; 3] = floats.each_ref();
assert_eq!(float_refs, [&3.1, &2.7, &-1.0]);

This method is particularly useful if combined with other methods, like map. This way, you can avoid moving the original array if its elements are not Copy.

#![feature(array_methods)]

let strings = ["Ferris".to_string(), "♥".to_string(), "Rust".to_string()];
let is_ascii = strings.each_ref().map(|s| s.is_ascii());
assert_eq!(is_ascii, [true, false, true]);

// We can still access the original array: it has not been moved.
assert_eq!(strings.len(), 3);

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pub fn split_array_ref<const M: usize>(&self) -> (&[T; M], &[T])

🔬This is a nightly-only experimental API. (split_array)

Divides one array reference into two at an index.

The first will contain all indices from [0, M) (excluding the index M itself) and the second will contain all indices from [M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let v = [1, 2, 3, 4, 5, 6];

{
   let (left, right) = v.split_array_ref::<0>();
   assert_eq!(left, &[]);
   assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}

{
    let (left, right) = v.split_array_ref::<2>();
    assert_eq!(left, &[1, 2]);
    assert_eq!(right, &[3, 4, 5, 6]);
}

{
    let (left, right) = v.split_array_ref::<6>();
    assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
    assert_eq!(right, &[]);
}

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pub fn rsplit_array_ref<const M: usize>(&self) -> (&[T], &[T; M])

🔬This is a nightly-only experimental API. (split_array)

Divides one array reference into two at an index from the end.

The first will contain all indices from [0, N - M) (excluding the index N - M itself) and the second will contain all indices from [N - M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let v = [1, 2, 3, 4, 5, 6];

{
   let (left, right) = v.rsplit_array_ref::<0>();
   assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
   assert_eq!(right, &[]);
}

{
    let (left, right) = v.rsplit_array_ref::<2>();
    assert_eq!(left, &[1, 2, 3, 4]);
    assert_eq!(right, &[5, 6]);
}

{
    let (left, right) = v.rsplit_array_ref::<6>();
    assert_eq!(left, &[]);
    assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}