BytesToHex encodes b as a hex string with 0x prefix.

Has0xPrefix returns true if input start with 0x, otherwise false.

HexToBytes decodes a hex string with 0x prefix.

MustHexToBytes decodes a hex string.

ErrEmptyString empty hex string.

ErrInvalidOddLength hex string of odd length.

ErrMissingPrefix hex string without 0x prefix.

ErrSyntax invalid hex string.