arch_program 0.6.5

A Rust library for building programs that run inside the Arch Virtual Machine. Provides core functionality for creating instructions, managing accounts, handling program errors, and interacting with the Arch runtime environment. Includes utilities for logging, transaction handling, and Bitcoin UTXO management.
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use bytemuck::{Pod, Zeroable};

#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Pod, Zeroable)]
#[repr(transparent)]
pub struct PodScalar(pub [u8; 32]);

#[cfg(not(target_os = "solana"))]
mod target_arch {
    use {super::*, crate::curve25519::errors::Curve25519Error, curve25519_dalek::scalar::Scalar};

    impl From<&Scalar> for PodScalar {
        fn from(scalar: &Scalar) -> Self {
            Self(scalar.to_bytes())
        }
    }

    impl TryFrom<&PodScalar> for Scalar {
        type Error = Curve25519Error;

        fn try_from(pod: &PodScalar) -> Result<Self, Self::Error> {
            Scalar::from_canonical_bytes(pod.0)
                .into_option()
                .ok_or(Curve25519Error::PodConversion)
        }
    }

    impl From<Scalar> for PodScalar {
        fn from(scalar: Scalar) -> Self {
            Self(scalar.to_bytes())
        }
    }

    impl TryFrom<PodScalar> for Scalar {
        type Error = Curve25519Error;

        fn try_from(pod: PodScalar) -> Result<Self, Self::Error> {
            Scalar::from_canonical_bytes(pod.0)
                .into_option()
                .ok_or(Curve25519Error::PodConversion)
        }
    }
}