Implementation of the BLS12-381 Elliptic Curve operations for Solana syscalls.

This crate provides the native implementations for the syscalls defined in SIMD-0388.

Supported Operations

• Group Operations (G1 & G2): Addition, Subtraction, Scalar Multiplication.
• Pairing: Multi-scalar multiplication (Miller loop + Final Exponentiation).
• Validation: Subgroup and on-curve checks.
• Decompression: Converting compressed byte representations to affine points.

Encoding and Endianness

The operations support two encoding formats defined in Endianness:

1. Big-Endian (BE): Follows the Zcash BLS12-381 specification and IETF draft.
2. Little-Endian (LE): This mirrors the Zcash structure but utilizes little-endian byte ordering for base field elements.