> For the complete documentation index, see [llms.txt](https://doc.cess.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.cess.network/developer/cess-sdk/sdk-golang/toolset.md). # Toolset This section focuses on the use of some of the tools. The list of interfaces is as follows: | Method Name | Description | | -------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------- | | [BytesToFileHash](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L23) | Convert byte arrays to FileHash | | [BytesToWorkPublickey](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L34) | Convert byte arrays to WorkPublickey | | [BytesToPoISKeyInfo](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L45) | Convert byte arrays to PoISKeyInfo | | [BytesToBloomFilter](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L56) | Convert byte arrays to BloomFilter | | [RrscAppPublicToByte](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L76) | Convert RRSC public key to bytes | | [H160ToSS58](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L91) | Converting Ether addresses to polka addresses | | [IsWorkerPublicKeyAllZero](https://github.com/CESSProject/cess-go-sdk/blob/main/chain/util.go#L67) | Determine if the WorkerPublicKey is 0 | | [ParsingPublickey](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/account.go#L23) | Parse the public key of the polka account | | [EncodePublicKeyAsSubstrateAccount](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/account.go#L44) | Encoding the public key into the original polka account | | [EncodePublicKeyAsCessAccount](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/account.go#L44) | Encoding the public key as a CESS account | | [VerityAddress](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/account.go#L81) | Verify that the account is legitimate | | [GetDirFreeSpace](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/cpu.go#L16) | Get the free space of a directory | | [GetSysMemAvailable](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/cpu.go#L21) | Get system memory available | | [CalcPathSHA256](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L21) | Calculate the sha256 hash value of a file | | [CalcFileSHA256](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L32) | Calculate the sha256 hash value of a file | | [CalcSHA256](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L42) | Calculate the sha256 hash value of the data | | [CalcMD5](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L56) | Calculate the MD5 value of the file | | [CalcPathSHA256Bytes](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L66) | Calculate the sha256 hash value of a file | | [CalcFileSHA256Bytes](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/hash.go#L77) | Calculate the sha256 hash value of a file | | [FildIpv4](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L27) | Find the IPv4 address from buf | | [IsIntranetIpv4](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L32) | Determine if it is an internal IPv4 address | | [IsIPv4](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L47) | Determine if it is an ipv4 address | | [IsIPv6](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L53) | Determine if it is an ipv6 address | | [IsPortInUse](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L58) | Determine if a port is occupied | | [CheckDomain](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L70) | Check if the domain name is legal | | [PingNode](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L126) | Get the response time of an address using the ping protocol | | [TraceRoute](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/network.go#L143) | Number of routes and response time to get the address | | [SignedSR25519WithMnemonic](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/sign.go#L29) | SR25519 signing with account private key | | [VerifySR25519WithPublickey](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/sign.go#L48) | Verify SR25519 signature with account public key | | [VerifyPolkadotJsHexSign](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/sign.go#L75) | Verify polkadot signature with account public key | | [ParseEthAccFromEthSign](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/sign.go#L106) | Resolving addresses from eth signatures | | [IsInterfaceNIL](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/utils.go#L14) | Determine if the interface is nil | | [CompareSlice](https://github.com/CESSProject/cess-go-sdk/blob/main/utils/utils.go#L29) | Compare whether two slices are the same |