Initial version

Signed-off-by: Knut Ahlers <knut@ahlers.me>

.gitignore

@@ -0,0 +1 @@
+androcrypt

.repo-runner.yaml

@@ -0,0 +1,11 @@
+---
+
+image: "reporunner/golang-alpine"
+checkout_dir: /go/src/github.com/Luzifer/androcrypt
+
+commands:
+  - make publish
+
+environment:
+  CGO_ENABLED: 0
+  MOD_MODE: readonly

LICENSE

@@ -0,0 +1,202 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
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+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
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+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+   Copyright 2019- Knut Ahlers <knut@ahlers.me>
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
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+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

Makefile

@@ -0,0 +1,3 @@
+publish:
+	curl -sSLo golang.sh https://raw.githubusercontent.com/Luzifer/github-publish/master/golang.sh
+	bash golang.sh

go.mod

@@ -0,0 +1,10 @@
+module github.com/Luzifer/androcrypt
+
+go 1.13
+
+require (
+	github.com/Luzifer/go-openssl v2.0.0+incompatible
+	github.com/Luzifer/go-openssl/v3 v3.1.0
+	github.com/Luzifer/rconfig/v2 v2.2.1
+	github.com/sirupsen/logrus v1.4.2
+)

go.sum

@@ -0,0 +1,24 @@
+github.com/Luzifer/go-openssl v2.0.0+incompatible h1:EpNNxrPDji4rRzE0KeOeIeV7pHyKe8zF9oNnAXy4mBY=
+github.com/Luzifer/go-openssl v2.0.0+incompatible/go.mod h1:t2qnLjT8WQ3usGU1R8uAqjY4T7CK7eMg9vhQ3l9Ue/Y=
+github.com/Luzifer/go-openssl/v3 v3.1.0 h1:QqKqo6kYXGGUsvtUoCpRZm8lHw+jDfhbzr36gVj+/gw=
+github.com/Luzifer/go-openssl/v3 v3.1.0/go.mod h1:liy3FXuuS8hfDlYh1T+l78AwQ/NjZflJz0NDvjKhwDs=
+github.com/Luzifer/rconfig v2.2.0+incompatible h1:Kle3+rshPM7LxciOheaR4EfHUzibkDDGws04sefQ5m8=
+github.com/Luzifer/rconfig/v2 v2.2.1 h1:zcDdLQlnlzwcBJ8E0WFzOkQE1pCMn3EbX0dFYkeTczg=
+github.com/Luzifer/rconfig/v2 v2.2.1/go.mod h1:OKIX0/JRZrPJ/ZXXWklQEFXA6tBfWaljZbW37w+sqBw=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
+github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
+github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19 h1:WB265cn5OpO+hK3pikC9hpP1zI/KTwmyMFKloW9eOVc=
+gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -0,0 +1,123 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/Luzifer/go-openssl/v3"
+	"github.com/Luzifer/rconfig/v2"
+)
+
+var (
+	cfg = struct {
+		Decrypt        bool   `flag:"decrypt,d" default:"false" description:"Execute decrypt operation"`
+		InFile         string `flag:"in-file,i" default:"-" description:"File to read input from (- for stdin)"`
+		KDF            string `flag:"kdf" default:"sha256" description:"Key-Derivation-Function to use (on of md5, sha1, sha256)"`
+		Key            string `flag:"key,k" default:"" description:"Key to use for en- or decryption"`
+		KeyFile        string `flag:"key-file,f" default:"" description:"Key-File which content is used instead of the key (overwrites key flag)"`
+		LogLevel       string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
+		OutFile        string `flag:"out-file,o" default:"-" description:"File to write output to (- for stdout)"`
+		VersionAndExit bool   `flag:"version" default:"false" description:"Prints current version and exits"`
+	}{}
+
+	version = "dev"
+)
+
+func init() {
+	rconfig.AutoEnv(true)
+	if err := rconfig.ParseAndValidate(&cfg); err != nil {
+		log.Fatalf("Unable to parse commandline options: %s", err)
+	}
+
+	if cfg.VersionAndExit {
+		fmt.Printf("git-changerelease %s\n", version)
+		os.Exit(0)
+	}
+
+	if l, err := log.ParseLevel(cfg.LogLevel); err != nil {
+		log.WithError(err).Fatal("Unable to parse log level")
+	} else {
+		log.SetLevel(l)
+	}
+}
+
+func main() {
+	if cfg.KeyFile != "" {
+		rawKey, err := ioutil.ReadFile(cfg.KeyFile)
+		if err != nil {
+			log.WithError(err).Fatal("Unable to read key from file")
+		}
+		cfg.Key = string(rawKey)
+	}
+
+	if cfg.Key == "" {
+		log.Fatal("No key given")
+	}
+
+	var kdf openssl.DigestFunc
+	switch cfg.KDF {
+	case "md5":
+		kdf = openssl.DigestMD5Sum
+	case "sha1":
+		kdf = openssl.DigestSHA1Sum
+	case "sha256":
+		kdf = openssl.DigestSHA256Sum
+	default:
+		log.Fatalf("No such Key-Derivation-Function: %q", cfg.KDF)
+	}
+
+	var (
+		input  io.Reader
+		output io.Writer
+	)
+
+	if cfg.InFile == "-" {
+		input = os.Stdin
+	} else {
+		f, err := os.Open(cfg.InFile)
+		if err != nil {
+			log.WithError(err).Fatal("Unable to open input file")
+		}
+		defer f.Close()
+		input = f
+	}
+
+	if cfg.OutFile == "-" {
+		output = os.Stdout
+	} else {
+		f, err := os.Create(cfg.OutFile)
+		if err != nil {
+			log.WithError(err).Fatal("Unable to create output file")
+		}
+		defer f.Close()
+		output = f
+	}
+
+	var (
+		err error
+		in  = new(bytes.Buffer)
+		out []byte
+	)
+	if _, err := io.Copy(in, input); err != nil {
+		log.WithError(err).Fatal("Unable to read input file")
+	}
+
+	if cfg.Decrypt {
+		out, err = openssl.New().DecryptBytes(cfg.Key, in.Bytes(), kdf)
+	} else {
+		out, err = openssl.New().EncryptBytes(cfg.Key, in.Bytes(), kdf)
+	}
+
+	if err != nil {
+		log.WithError(err).Fatal("Unable to perform cryptographic action")
+	}
+
+	if _, err = output.Write(out); err != nil {
+		log.WithError(err).Fatal("Unable to write output data")
+	}
+}