Package hexutil implements hex encoding with 0x prefix.

BigMax returns the larger of x or y.

BigMin returns the smaller of x or y.

BigPow returns a ** b as a big integer.

BigUint64 returns the integer casted to a uint64 and returns whether it overflowed in the process.

Byte returns the byte at position n, with the supplied padlength in Little-Endian encoding.

Bytes2Hex returns the hexadecimal encoding of d.

CopyBytes returns an exact copy of the provided bytes.

CreateDirIfNotExist create given folder.

DecryptBytes decrypt raw json to raw.

EncryptBytes encrypts raw by passphrase to json binary.

Exp implements exponentiation by squaring.

FromHex returns the bytes represented by the hexadecimal string s.

Hex2Bytes returns the bytes represented by the hexadecimal string str.

Hex2BytesFixed returns bytes of a specified fixed length flen.

LeftPadBytes zero-pads slice to the left up to length l.

PaddedBigBytes encodes a big integer as a big-endian byte slice.

ReadBits encodes the absolute amount of bigint as big-endian bytes.

RightPadBytes zero-pads slice to the right up to length l.

S256 interprets x as a two's complement number.

SafeAdd returns the result and whether overflow occurred.

SafeMul returns multiplication result and whether overflow occurred.

SafeSub returns subtraction result and whether overflow occurred.

ToHex returns the hex representation of b, prefixed with '0x'.

ToWordSize returns the ceiled word size required for memory expansion.

trim the '\00' byte.

TrimQuotes trim quotes of string if quotes exist.

U256 encodes as a 256 bit two's complement number.

StandardScryptN is the N parameter of Scrypt encryption algorithm, using 256MB memory and taking approximately 1s CPU time on a modern processor.

StandardScryptP is the P parameter of Scrypt encryption algorithm, using 256MB memory and taking approximately 1s CPU time on a modern processor.

number of bits in a big.Word.

number of bytes in a big.Word.

number of bytes in a vm word.