diff --git a/.gitignore b/.gitignore
index ea8c4bf..8d2fafc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-/target
+/hash_utils
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
deleted file mode 100644
index 13566b8..0000000
--- a/.idea/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index 639900d..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-
-
-
-
-
-
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index 1359cd1..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 35eb1dd..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-
-
-
-
-
-
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
deleted file mode 100644
index c767595..0000000
--- a/Cargo.lock
+++ /dev/null
@@ -1,373 +0,0 @@
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- "winapi-x86_64-pc-windows-gnu",
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-[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
deleted file mode 100644
index 39d0410..0000000
--- a/Cargo.toml
+++ /dev/null
@@ -1,15 +0,0 @@
-[package]
-name = "hash_utils"
-version = "1.0.0"
-edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-bcrypt = "0.10"
-clap = { version = "3.1.18", features = ["derive"] }
-md-5 = "0.10.1"
-base64 = "0.20.0-alpha.1"
-
-[profile.release]
-opt-level = 3
\ No newline at end of file
diff --git a/README.md b/README.md
deleted file mode 100644
index cbb8486..0000000
--- a/README.md
+++ /dev/null
@@ -1,8 +0,0 @@
-# hash_utils
-
-This is a simple tool box with basic functionality.
-
-## Supported tools
- - BCrypt
- - MD5
- - Base64 (not a hash algo but idc)
\ No newline at end of file
diff --git a/commands/bcrypt/bcrypt.go b/commands/bcrypt/bcrypt.go
new file mode 100644
index 0000000..6b7a2d7
--- /dev/null
+++ b/commands/bcrypt/bcrypt.go
@@ -0,0 +1,34 @@
+package bcrypt
+
+import (
+ "context"
+ "flag"
+
+ "github.com/google/subcommands"
+)
+
+type (
+ MD5Cmd struct {
+ file string
+ round int
+ }
+)
+
+func (*MD5Cmd) Name() string { return "bcrypt" }
+func (*MD5Cmd) Synopsis() string { return "" }
+func (*MD5Cmd) Usage() string {
+ return `Usage: hash_utils bcrypt
+
+Options:
+`
+}
+
+func (p *MD5Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+ f.IntVar(&p.round, "round", 12, "number of iteration")
+}
+
+func (p *MD5Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+
+ return subcommands.ExitSuccess
+}
diff --git a/commands/crc8/crc8.go b/commands/crc8/crc8.go
new file mode 100644
index 0000000..8e875c6
--- /dev/null
+++ b/commands/crc8/crc8.go
@@ -0,0 +1,95 @@
+package crc8
+
+import (
+ "context"
+ "flag"
+ "fmt"
+ "hash_utils/tools"
+ "os"
+
+ "github.com/google/subcommands"
+ "github.com/sigurn/crc8"
+)
+
+type (
+ CRC8Cmd struct {
+ file string
+ table string
+ }
+)
+
+var (
+ tables = []crc8.Params{
+ crc8.CRC8,
+ crc8.CRC8_CDMA2000,
+ crc8.CRC8_DARC,
+ crc8.CRC8_DVB_S2,
+ crc8.CRC8_EBU,
+ crc8.CRC8_I_CODE,
+ crc8.CRC8_ITU,
+ crc8.CRC8_MAXIM,
+ crc8.CRC8_ROHC,
+ crc8.CRC8_WCDMA,
+ }
+)
+
+func (*CRC8Cmd) Name() string { return "crc8" }
+func (*CRC8Cmd) Synopsis() string { return "" }
+func (*CRC8Cmd) Usage() string {
+ return `Usage: hash_utils crc8
+
+Options:
+`
+}
+
+func (p *CRC8Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+ f.StringVar(&p.table, "table", crc8.CRC8.Name, "Predefined CRC-8 algorithms")
+}
+
+func (p *CRC8Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+ var err error
+ param := crc8.CRC8
+ if len(p.table) > 0 {
+ param, err = parse(p.table)
+ if err != nil {
+ fmt.Printf("Available tables: ")
+ for _, table := range tables {
+ fmt.Printf("%s ", table.Name)
+ }
+ fmt.Fprintln(os.Stderr, "error:", err)
+
+ return subcommands.ExitFailure
+ }
+ }
+
+ if len(p.file) > 0 {
+ b, err := os.ReadFile(p.file)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error: failed to read file:", err)
+ return subcommands.ExitFailure
+ }
+
+ h := tools.CRC8(b, param)
+
+ fmt.Printf("%s: %s\n", f.Name(), h)
+
+ return subcommands.ExitSuccess
+ }
+
+ for _, arg := range f.Args() {
+ h := tools.CRC8([]byte(arg), param)
+ fmt.Printf("%s: %s\n", arg, h)
+ }
+
+ return subcommands.ExitSuccess
+}
+
+func parse(tableName string) (crc8.Params, error) {
+ for _, table := range tables {
+ if table.Name == tableName {
+ return table, nil
+ }
+ }
+ return crc8.CRC8, fmt.Errorf("invalid table name: %s", tableName)
+}
diff --git a/commands/md5/md5.go b/commands/md5/md5.go
new file mode 100644
index 0000000..b2feec6
--- /dev/null
+++ b/commands/md5/md5.go
@@ -0,0 +1,63 @@
+package md5
+
+import (
+ "context"
+ "crypto/md5"
+ "flag"
+ "fmt"
+ "hash_utils/tools"
+ "os"
+ "strings"
+
+ "github.com/google/subcommands"
+)
+
+type (
+ MD5Cmd struct {
+ file string
+ }
+)
+
+func (*MD5Cmd) Name() string { return "md5" }
+func (*MD5Cmd) Synopsis() string { return "" }
+func (*MD5Cmd) Usage() string {
+ return `Usage: hash_utils md5
+
+Options:
+`
+}
+
+func (p *MD5Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+}
+
+func (p *MD5Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+ if len(p.file) > 0 {
+ file, err := os.OpenFile(p.file, os.O_RDONLY, 0)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error: failed to open the file:", err)
+ return subcommands.ExitFailure
+ }
+ defer file.Close()
+
+ h, err := tools.Hash(md5.New(), file)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", f.Name(), h)
+
+ return subcommands.ExitSuccess
+ }
+
+ for _, arg := range f.Args() {
+ h, err := tools.Hash(md5.New(), strings.NewReader(arg))
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", arg, h)
+ }
+
+ return subcommands.ExitSuccess
+}
diff --git a/commands/sha1/sha1.go b/commands/sha1/sha1.go
new file mode 100644
index 0000000..41f03c0
--- /dev/null
+++ b/commands/sha1/sha1.go
@@ -0,0 +1,63 @@
+package sha1
+
+import (
+ "context"
+ "crypto/sha1"
+ "flag"
+ "fmt"
+ "hash_utils/tools"
+ "os"
+ "strings"
+
+ "github.com/google/subcommands"
+)
+
+type (
+ SHA1Cmd struct {
+ file string
+ }
+)
+
+func (*SHA1Cmd) Name() string { return "sha1" }
+func (*SHA1Cmd) Synopsis() string { return "" }
+func (*SHA1Cmd) Usage() string {
+ return `Usage: hash_utils sha1
+
+Options:
+`
+}
+
+func (p *SHA1Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+}
+
+func (p *SHA1Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+ if len(p.file) > 0 {
+ file, err := os.OpenFile(p.file, os.O_RDONLY, 0)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error: failed to open the file:", err)
+ return subcommands.ExitFailure
+ }
+ defer file.Close()
+
+ h, err := tools.Hash(sha1.New(), file)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", f.Name(), h)
+
+ return subcommands.ExitSuccess
+ }
+
+ for _, arg := range f.Args() {
+ h, err := tools.Hash(sha1.New(), strings.NewReader(arg))
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", arg, h)
+ }
+
+ return subcommands.ExitSuccess
+}
diff --git a/commands/sha256/sha256.go b/commands/sha256/sha256.go
new file mode 100644
index 0000000..5c90f7b
--- /dev/null
+++ b/commands/sha256/sha256.go
@@ -0,0 +1,63 @@
+package sha256
+
+import (
+ "context"
+ "crypto/sha256"
+ "flag"
+ "fmt"
+ "hash_utils/tools"
+ "os"
+ "strings"
+
+ "github.com/google/subcommands"
+)
+
+type (
+ SHA256Cmd struct {
+ file string
+ }
+)
+
+func (*SHA256Cmd) Name() string { return "sha256" }
+func (*SHA256Cmd) Synopsis() string { return "" }
+func (*SHA256Cmd) Usage() string {
+ return `Usage: hash_utils sha256
+
+Options:
+`
+}
+
+func (p *SHA256Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+}
+
+func (p *SHA256Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+ if len(p.file) > 0 {
+ file, err := os.OpenFile(p.file, os.O_RDONLY, 0)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error: failed to open the file:", err)
+ return subcommands.ExitFailure
+ }
+ defer file.Close()
+
+ h, err := tools.Hash(sha256.New(), file)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", f.Name(), h)
+
+ return subcommands.ExitSuccess
+ }
+
+ for _, arg := range f.Args() {
+ h, err := tools.Hash(sha256.New(), strings.NewReader(arg))
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", arg, h)
+ }
+
+ return subcommands.ExitSuccess
+}
diff --git a/commands/sha512/sha512.go b/commands/sha512/sha512.go
new file mode 100644
index 0000000..dc4920b
--- /dev/null
+++ b/commands/sha512/sha512.go
@@ -0,0 +1,63 @@
+package sha512
+
+import (
+ "context"
+ "crypto/sha512"
+ "flag"
+ "fmt"
+ "hash_utils/tools"
+ "os"
+ "strings"
+
+ "github.com/google/subcommands"
+)
+
+type (
+ SHA512Cmd struct {
+ file string
+ }
+)
+
+func (*SHA512Cmd) Name() string { return "sha512" }
+func (*SHA512Cmd) Synopsis() string { return "" }
+func (*SHA512Cmd) Usage() string {
+ return `Usage: hash_utils sha512
+
+Options:
+`
+}
+
+func (p *SHA512Cmd) SetFlags(f *flag.FlagSet) {
+ f.StringVar(&p.file, "file", "", "get the checksum of a file")
+}
+
+func (p *SHA512Cmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+ if len(p.file) > 0 {
+ file, err := os.OpenFile(p.file, os.O_RDONLY, 0)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error: failed to open the file:", err)
+ return subcommands.ExitFailure
+ }
+ defer file.Close()
+
+ h, err := tools.Hash(sha512.New(), file)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", f.Name(), h)
+
+ return subcommands.ExitSuccess
+ }
+
+ for _, arg := range f.Args() {
+ h, err := tools.Hash(sha512.New(), strings.NewReader(arg))
+ if err != nil {
+ fmt.Fprintln(os.Stderr, "error:", err)
+ return subcommands.ExitFailure
+ }
+ fmt.Printf("%s: %s\n", arg, h)
+ }
+
+ return subcommands.ExitSuccess
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..0825158
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module hash_utils
+
+go 1.24
+
+require (
+ github.com/google/subcommands v1.2.0
+ github.com/sigurn/crc8 v0.0.0-20220107193325-2243fe600f9f
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..c0392ed
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,4 @@
+github.com/google/subcommands v1.2.0 h1:vWQspBTo2nEqTUFita5/KeEWlUL8kQObDFbub/EN9oE=
+github.com/google/subcommands v1.2.0/go.mod h1:ZjhPrFU+Olkh9WazFPsl27BQ4UPiG37m3yTrtFlrHVk=
+github.com/sigurn/crc8 v0.0.0-20220107193325-2243fe600f9f h1:1R9KdKjCNSd7F8iGTxIpoID9prlYH8nuNYKt0XvweHA=
+github.com/sigurn/crc8 v0.0.0-20220107193325-2243fe600f9f/go.mod h1:vQhwQ4meQEDfahT5kd61wLAF5AAeh5ZPLVI4JJ/tYo8=
diff --git a/hash_utils.iml b/hash_utils.iml
deleted file mode 100644
index 2fecef3..0000000
--- a/hash_utils.iml
+++ /dev/null
@@ -1,12 +0,0 @@
-
-
-
-
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..28bf60d
--- /dev/null
+++ b/main.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+ "context"
+ "flag"
+ "hash_utils/commands/crc8"
+ "hash_utils/commands/md5"
+ "hash_utils/commands/sha1"
+ "hash_utils/commands/sha256"
+ "hash_utils/commands/sha512"
+ "os"
+
+ "github.com/google/subcommands"
+)
+
+func main() {
+ subcommands.Register(subcommands.HelpCommand(), "help")
+ subcommands.Register(subcommands.FlagsCommand(), "help")
+ subcommands.Register(subcommands.CommandsCommand(), "help")
+
+ subcommands.Register(&md5.MD5Cmd{}, "unkeyed cryptographic hash functions")
+ subcommands.Register(&sha1.SHA1Cmd{}, "unkeyed cryptographic hash functions")
+ subcommands.Register(&sha256.SHA256Cmd{}, "unkeyed cryptographic hash functions")
+ subcommands.Register(&sha512.SHA512Cmd{}, "unkeyed cryptographic hash functions")
+
+ subcommands.Register(&crc8.CRC8Cmd{}, "cyclic redundancy checks")
+
+ flag.Parse()
+ ctx := context.Background()
+
+ os.Exit(int(subcommands.Execute(ctx)))
+}
diff --git a/src/base64_utils.rs b/src/base64_utils.rs
deleted file mode 100644
index 560d152..0000000
--- a/src/base64_utils.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-use clap::{Subcommand};
-use std::str;
-
-#[derive(Subcommand)]
-pub enum Base64SubCommands {
- /// Encode the text in base64
- Encode {
- /// The text to encode
- text: Option,
- },
-
- /// Decode the text
- Decode {
- /// Base64 encoded text
- text: Option,
- },
-}
-
-pub fn do_base64_encode(text: String) {
- let b64 = base64::encode(text);
- println!("{}", b64);
-}
-
-pub fn do_base64_decode(text: String) {
- let res = base64::decode(text);
- if res.is_err() {
- eprintln!("E: {}", res.unwrap_err());
- return;
- }
- let bytes = res.unwrap();
- let utf8_text = str::from_utf8(&bytes);
- if utf8_text.is_err() {
- eprintln!("E: {}", utf8_text.unwrap_err());
- return;
- }
- println!("{}", utf8_text.unwrap());
-}
\ No newline at end of file
diff --git a/src/bcrypt_utils.rs b/src/bcrypt_utils.rs
deleted file mode 100644
index 45fa43e..0000000
--- a/src/bcrypt_utils.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-extern crate bcrypt;
-
-use bcrypt::{DEFAULT_COST, hash, verify};
-use clap::{Subcommand};
-
-#[derive(Subcommand)]
-pub enum BCryptSubCommands {
- /// Hash the text and print it
- Hash {
- /// How many times to run the hash command before print result
- #[clap(short, long, default_value_t = DEFAULT_COST)]
- cost: u32,
- /// The text to hash
- text: Option,
- },
-
- /// Verify the text hashed and print the result
- Verify {
- /// The hash to verify
- hash: Option,
- /// The clear text that need to be verified with the hash
- text: Option,
- },
-}
-
-pub fn do_bcrypt_hash(text: String, cost: u32) {
- let hashed = hash(text, cost);
- if hashed.is_err() {
- eprintln!("E: {}", hashed.err().unwrap())
- } else {
- println!("{}", hashed.unwrap());
- }
-}
-
-pub fn do_bcrypt_verify(hash: String, text: String) {
- let valid = verify(text, &hash);
- if valid.is_err() {
- eprintln!("E: {}", valid.err().unwrap())
- } else {
- println!("{} : {}", hash, if valid.unwrap() { "true" } else { "false" });
- }
-}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
deleted file mode 100644
index 73e4289..0000000
--- a/src/main.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-mod bcrypt_utils;
-mod md5_utils;
-mod base64_utils;
-
-pub use crate::bcrypt_utils::{do_bcrypt_hash, do_bcrypt_verify, BCryptSubCommands};
-pub use crate::md5_utils::{do_md5_hash, do_md5_verify, MD5SubCommands};
-pub use crate::base64_utils::{do_base64_encode, do_base64_decode, Base64SubCommands};
-use clap::{Parser, Subcommand};
-
-#[derive(Parser)]
-#[clap(author, version, about, long_about = None)]
-struct Cli {
- #[clap(subcommand)]
- command: Option,
-}
-
-#[derive(Subcommand)]
-enum Commands {
- /// Use the bcrypt algorithm
- Bcrypt {
- #[clap(subcommand)]
- command: Option,
- },
- /// Use the md5 algorithm
- MD5 {
- #[clap(subcommand)]
- command: Option,
- },
- /// Encode and decode base64 text (I know, it's not a hash but I need it in my tools)
- Base64 {
- #[clap(subcommand)]
- command: Option,
- },
-}
-
-fn main() {
- let cmd = Cli::parse();
-
- match &cmd.command {
- Some(Commands::Bcrypt { command }) => {
- match &command {
- Some(BCryptSubCommands::Hash { cost, text }) => {
- if let Some(value) = text {
- do_bcrypt_hash(String::from(value), *cost);
- } else {
- eprintln!("E: Missing the text value")
- }
- }
- Some(BCryptSubCommands::Verify { hash, text }) => {
- if let Some(value) = text {
- if let Some(hashed_value) = hash {
- do_bcrypt_verify(String::from(hashed_value), String::from(value));
- } else {
- eprintln!("E: Missing the hash")
- }
- } else {
- eprintln!("E: Missing the text value")
- }
- }
- None => {eprintln!("E: Subcommand invalid, use 'help' to show subcommand available")}
- }
- }
- Some(Commands::MD5 { command }) => {
- match &command {
- Some(MD5SubCommands::Hash { text }) => {
- if let Some(value) = text {
- do_md5_hash(String::from(value));
- } else {
- eprintln!("E: Missing the text value")
- }
- }
- Some(MD5SubCommands::Verify { hash, text }) => {
- if let Some(value) = text {
- if let Some(hashed_value) = hash {
- do_md5_verify(String::from(hashed_value), String::from(value));
- } else {
- eprintln!("E: Missing the hash")
- }
- } else {
- eprintln!("E: Missing the text value")
- }
- }
- None => {eprintln!("E: Subcommand invalid, use 'help' to show subcommand available")}
- }
- }
- Some(Commands::Base64 { command }) => {
- match &command {
- Some(Base64SubCommands::Encode { text }) => {
- if let Some(value) = text {
- do_base64_encode(String::from(value));
- } else {
- eprintln!("E: Missing the text value")
- }
- }
- Some(Base64SubCommands::Decode { text }) => {
- if let Some(value) = text {
- do_base64_decode(String::from(value));
- } else {
- eprintln!("E: Missing the encoded value")
- }
- }
- None => {eprintln!("E: Subcommand invalid, use 'help' to show subcommand available")}
- }
- }
- None => {eprintln!("E: Subcommand invalid, use 'help' to show subcommand available")}
- }
-}
\ No newline at end of file
diff --git a/src/md5_utils.rs b/src/md5_utils.rs
deleted file mode 100644
index 112d2a0..0000000
--- a/src/md5_utils.rs
+++ /dev/null
@@ -1,33 +0,0 @@
-use md5::{Md5, Digest};
-use clap::{Subcommand};
-
-#[derive(Subcommand)]
-pub enum MD5SubCommands {
- /// Hash the text and print it
- Hash {
- /// The text to hash
- text: Option,
- },
-
- /// Verify the text hashed and print the result
- Verify {
- /// The hash to verify
- hash: Option,
- /// The clear text that need to be verified with the hash
- text: Option,
- },
-}
-
-pub fn do_md5_hash(text: String) {
- let mut hasher = Md5::new();
- hasher.update(text);
- let result = hasher.finalize();
- println!("{:x}", result)
-}
-
-pub fn do_md5_verify(hash: String, text: String) {
- let mut hasher = Md5::new();
- hasher.update(text);
- let result = hasher.finalize();
- println!("{} : {}", hash, if format!("{:x}", result) == hash { "true" } else { "false" });
-}
\ No newline at end of file
diff --git a/tools/tools.go b/tools/tools.go
new file mode 100644
index 0000000..c9f370e
--- /dev/null
+++ b/tools/tools.go
@@ -0,0 +1,23 @@
+package tools
+
+import (
+ "encoding/hex"
+ "fmt"
+ "hash"
+ "io"
+
+ "github.com/sigurn/crc8"
+)
+
+func Hash(h hash.Hash, r io.Reader) (string, error) {
+ if _, err := io.Copy(h, r); err != nil {
+ return "", fmt.Errorf("failed to read string: %w", err)
+ }
+ return hex.EncodeToString(h.Sum(nil)), nil
+}
+
+func CRC8(s []byte, param crc8.Params) string {
+ table := crc8.MakeTable(param)
+ crc := crc8.Checksum(s, table)
+ return fmt.Sprintf("%X", crc)
+}