feat: first version

Author: euskadi31

.editorconfig

@@ -0,0 +1,27 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = LF
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 4
+
+[Makefile]
+indent_style = tab
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.go]
+indent_style = tab
+
+[*.yml]
+indent_size = 2
+
+[*.yaml]
+indent_size = 2
+
+[*.yml.dist]
+indent_size = 2

.github/workflows/go.yml

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+name: Go
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.16
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: go build -race -v ./...
+
+    - name: Test
+      run: |
+        go test -race -cover -coverprofile ./coverage.out.tmp ./...
+        cat ./coverage.out.tmp | grep -v '.pb.go' | grep -v 'mock_' > ./coverage.out
+        rm ./coverage.out.tmp
+
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v2
+      with:
+        version: v1.41.1
+
+    - name: Coveralls
+      uses: shogo82148/actions-goveralls@v1
+      with:
+        path-to-profile: coverage.out
+
+  finish:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Coveralls Finished
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        parallel-finished: true

.gitignore

@@ -0,0 +1,6 @@
+.DS_Store
+*.out
+
+vendor/
+
+*.swp

.golangci.yml

@@ -0,0 +1,110 @@
+run:
+  concurrency: 4
+  deadline: 1m
+  issues-exit-code: 1
+  tests: false
+  skip-files:
+    - ".*_mock\\.go"
+    - "mock_.*\\.go"
+    - ".*/pkg/mod/.*$"
+
+output:
+  format: colored-line-number
+  print-issued-lines: true
+  print-linter-name: true
+
+linters-settings:
+  errcheck:
+    check-type-assertions: false
+    check-blank: false
+  govet:
+    check-shadowing: false
+  revive:
+    ignore-generated-header: true
+    severity: warning
+  gofmt:
+    simplify: true
+  gocyclo:
+    min-complexity: 18
+  maligned:
+    suggest-new: true
+  dupl:
+    threshold: 50
+  goconst:
+    min-len: 3
+    min-occurrences: 2
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+      - github.com/davecgh/go-spew/spew
+  misspell:
+    locale: US
+    ignore-words:
+      - cancelled
+  goimports:
+    local-prefixes: go.opentelemetry.io
+
+
+linters:
+  disable-all: true
+  enable:
+    - deadcode
+    - depguard
+    - errcheck
+    - gas
+    - goconst
+    - gocyclo
+    - gofmt
+    - revive
+    - govet
+    - ineffassign
+    - megacheck
+    - misspell
+    - structcheck
+    - typecheck
+    - unconvert
+    - varcheck
+    - gosimple
+    - staticcheck
+    - unused
+    - asciicheck
+    - bodyclose
+    - dogsled
+    - dupl
+    - durationcheck
+    - errorlint
+    - exhaustive
+    - exportloopref
+    - forbidigo
+    - forcetypeassert
+    - gocritic
+    - godot
+    - goerr113
+    - gosec
+    - ifshort
+    - nestif
+    - nilerr
+    - nlreturn
+    - noctx
+    - prealloc
+    - predeclared
+    - sqlclosecheck
+    - tagliatelle
+    - whitespace
+    - wrapcheck
+    - wsl
+  fast: false
+
+#issues:
+#  exclude:
+    # hack for go-service, fixed in v1.1.0
+    #- "Errors unhandled."
+    #- "Error return value of `container.Set` is not checked"
+    #- "composite literal uses unkeyed fields" # govet
+  #   exclude-use-default: true
+  #   max-per-linter: 0
+  #   max-same: 0
+  #   new: false
+  #   new-from-rev: ""
+  #   new-from-patch: ""

LICENSE.md

@@ -0,0 +1,19 @@
+Copyright (c) 2021 Axel Etcheverry
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Makefile

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+.PHONY: all clean test cover travis lint
+
+release:
+	@echo "Release v$(version)"
+	@git pull
+	@git checkout master
+	@git pull
+	@git checkout develop
+	@git flow release start $(version)
+	@git flow release finish $(version) -p -m "Release v$(version)"
+	@git checkout develop
+	@echo "Release v$(version) finished."
+
+all: test
+
+clean:
+	@go clean -i ./...
+
+coverage.out: $(shell find . -type f -print | grep -v vendor | grep "\.go")
+	@go test -race -cover -coverprofile ./coverage.out.tmp ./...
+	@cat ./coverage.out.tmp | grep -v '.pb.go' | grep -v 'mock_' > ./coverage.out
+	@rm ./coverage.out.tmp
+
+test: coverage.out
+
+.PHONY: lint
+lint:
+ifeq (, $(shell which golangci-lint))
+	@echo "Install golangci-lint..."
+	@curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b ${GOPATH}/bin v1.41.1
+endif
+	@echo "lint..."
+	@golangci-lint run --timeout=300s ./...
+
+cover: coverage.out
+	@echo ""
+	@go tool cover -func ./coverage.out
+

README.md

@@ -0,0 +1,35 @@
+Hyperscale secure [![Last release](https://img.shields.io/github/release/hyperscale-stack/secure.svg)](https://github.com/hyperscale-stack/secure/releases/latest) [![Documentation](https://godoc.org/github.com/hyperscale-stack/secure?status.svg)](https://godoc.org/github.com/hyperscale-stack/secure)
+====================
+
+[![Go Report Card](https://goreportcard.com/badge/github.com/hyperscale-stack/secure)](https://goreportcard.com/report/github.com/hyperscale-stack/secure)
+
+| Branch  | Status | Coverage |
+|---------|--------|----------|
+| master  | [![Build Status](https://github.com/hyperscale-stack/secure/workflows/Go/badge.svg?branch=master)](https://github.com/hyperscale-stack/secure/actions?query=workflow%3AGo) | [![Coveralls](https://img.shields.io/coveralls/hyperscale-stack/secure/master.svg)](https://coveralls.io/github/hyperscale-stack/secure?branch=master) |
+
+The Hyperscale secure is a secure string generator.
+
+## Example
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/hyperscale-stack/secure"
+)
+
+func main() {
+    s, err := secure.GenerateRandomString(64)
+    if err != nil {
+        panic(err)
+    }
+
+    fmt.Println(s)
+}
+
+```
+
+## License
+
+Hyperscale secure is licensed under [the MIT license](LICENSE.md).

generate.go

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+// Copyright 2021 Hyperscale. All rights reserved.
+// Use of this source code is governed by a MIT
+// license that can be found in the LICENSE file.
+
+package secure
+
+import (
+	"crypto/rand"
+	"fmt"
+)
+
+// GenerateRandomBytes returns securely generated random bytes.
+func GenerateRandomBytes(n int) ([]byte, error) {
+	b := make([]byte, n)
+
+	if _, err := rand.Read(b); err != nil {
+		return nil, fmt.Errorf("read rand failed: %w", err)
+	}
+
+	return b, nil
+}
+
+// GenerateRandomString returns a securely generated random string.
+func GenerateRandomString(length int) (string, error) {
+	result := make([]byte, length)
+
+	if _, err := rand.Read(result); err != nil {
+		return "", fmt.Errorf("read rand failed: %w", err)
+	}
+
+	for i := 0; i < length; i++ {
+		result[i] &= 0x7F
+
+		//  48 : 0
+		//  57 : 9
+		//  65 : A
+		//  90 : Z
+		//  97 : a
+		// 122 : z
+		// [0-9A-Za-z]
+		for (result[i] < 48 || result[i] > 57) && (result[i] < 65 || result[i] > 90) && (result[i] < 97 || result[i] > 122) {
+			if _, err := rand.Read(result[i : i+1]); err != nil {
+				return "", fmt.Errorf("read rand failed: %w", err)
+			}
+
+			result[i] &= 0x7F
+		}
+	}
+
+	return string(result), nil
+}