Encode a positive BigInt into an unsigned 32-byte big-endian Uint8Array. This
can be used to encoded numbers for cryptographic primitives like private
keys, public keys, curve parameters, and signature points.
Negative values will return the same result as 0, values higher than
2^256-1 will return the maximum expressible unsigned 256-bit value
(0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff).
Encode a positive BigInt into an unsigned 32-byte big-endian Uint8Array. This can be used to encoded numbers for cryptographic primitives like private keys, public keys, curve parameters, and signature points.
Negative values will return the same result as
0, values higher than 2^256-1 will return the maximum expressible unsigned 256-bit value (0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff).For the reverse, see binToBigIntUint256BE.