luzifer/wasm-openssl
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Convert to be auto-build compliant

Browse source 
Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2018-09-18 18:22:10 +02:00
parent a34bec4743
commit 7049fc4299
Signed by: luzifer
GPG key ID: DC2729FDD34BE99E
10 changed files with 653 additions and 6 deletions
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11
.repo-runner.yaml Normal file
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@ -0,0 +1,11 @@
---
image: "reporunner/golang-alpine"
checkout_dir: /go/src/github.com/Luzifer/wasm-openssl
commands:
- make publish
environment:
ARCHS: js/wasm
CGO_ENABLED: 0

17
Gopkg.lock generated Normal file
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# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
[[projects]]
digest = "1:f892acc8308967384ea31cbd1c17d42745bd45001add0eacada483d0d13d8fac"
name = "github.com/Luzifer/go-openssl"
packages = ["."]
pruneopts = "NUT"
revision = "5d2bdfffeecf20ba6dec4feb04e31872c8720255"
version = "v2.0.2"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
input-imports = ["github.com/Luzifer/go-openssl"]
solver-name = "gps-cdcl"
solver-version = 1

35
Gopkg.toml Normal file
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# Gopkg.toml example
#
# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
# for detailed Gopkg.toml documentation.
#
# required = ["github.com/user/thing/cmd/thing"]
# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
#
# [[constraint]]
# name = "github.com/user/project"
# version = "1.0.0"
#
# [[constraint]]
# name = "github.com/user/project2"
# branch = "dev"
# source = "github.com/myfork/project2"
#
# [[override]]
# name = "github.com/x/y"
# version = "2.4.0"
#
# [prune]
# non-go = false
# go-tests = true
# unused-packages = true
[[constraint]]
name = "github.com/Luzifer/go-openssl"
version = "2.0.2"
[prune]
non-go = true
go-tests = true
unused-packages = true

3
Makefile
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@ -6,3 +6,6 @@ build:
wasm_exec.js:
curl -sSfLo wasm_exec.js "https://raw.githubusercontent.com/golang/go/go1.11/misc/wasm/wasm_exec.js"
publish:
bash golang.sh

3
go.mod
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@ -1,3 +0,0 @@
module test
require github.com/Luzifer/go-openssl/v2 v2.0.2+incompatible

2
go.sum
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@ -1,2 +0,0 @@
github.com/Luzifer/go-openssl/v2 v2.0.2+incompatible h1:To0xXBgE5HjzhAvxzVo2W3dDUl/StsOBHzSPyRfcF/w=
github.com/Luzifer/go-openssl/v2 v2.0.2+incompatible/go.mod h1:QPR7HJhwod/yIQRM+iN/qMS1CRoMAm8GJ6ojONUGTw0=

86
golang.sh Normal file
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@ -0,0 +1,86 @@
#!/bin/bash
set -euo pipefail
(which zip 2>&1 1>/dev/null) || {
(which apk 2>&1 1>/dev/null) && apk add --update zip
(which apt-get 2>&1 1>/dev/null) && apt-get update && apt-get install -y zip
}
function step() {
echo "===> $@..."
}
VERSION=$(git describe --tags --exact-match || echo "ghpublish__notags")
PWD=$(pwd)
godir=${PWD/${GOPATH}\/src\//}
REPO=${REPO:-$(echo ${godir} | cut -d '/' -f 3)}
GHUSER=${GHUSER:-$(echo ${godir} | cut -d '/' -f 2)}
DEPLOYMENT_TAG=${DEPLOYMENT_TAG:-${VERSION}}
PACKAGES=${PACKAGES:-$(echo ${godir} | cut -d '/' -f 1-3)}
BUILD_DIR=${BUILD_DIR:-.build}
DRAFT=${DRAFT:-true}
go version
step "Retrieve dependencies"
go get github.com/aktau/github-release
step "Cleanup build directory if present"
rm -rf ${BUILD_DIR}
step "Compile program"
mkdir ${BUILD_DIR}
GOOS=js GOARCH=wasm go build -ldflags="-X main.version=${VERSION}" \
-o "${BUILD_DIR}/openssl.wasm" \
${PACKAGES}
step "Generate binary SHASUMs"
cd ${BUILD_DIR}
sha256sum * >SHA256SUMS
step "Packing archives"
for file in *; do
if [ "${file}" = "SHA256SUMS" ]; then
continue
fi
tar -czf "${file%%.*}.tar.gz" "${file}"
rm "${file}"
done
step "Generate archive SHASUMs"
sha256sum * >>SHA256SUMS
grep -v 'SHA256SUMS' SHA256SUMS >SHA256SUMS.tmp
mv SHA256SUMS.tmp SHA256SUMS
step "Publish builds to Github"
if (test "${VERSION}" == "ghpublish__notags"); then
echo "No tag present, stopping build now."
exit 0
fi
if [ -z "${GITHUB_TOKEN}" ]; then
echo "Please set \$GITHUB_TOKEN environment variable"
exit 1
fi
if [[ "${DRAFT}" == "true" ]]; then
step "Create a drafted release"
github-release release --user ${GHUSER} --repo ${REPO} --tag ${DEPLOYMENT_TAG} --name ${DEPLOYMENT_TAG} --draft || true
else
step "Create a published release"
github-release release --user ${GHUSER} --repo ${REPO} --tag ${DEPLOYMENT_TAG} --name ${DEPLOYMENT_TAG} || true
fi
step "Upload build assets"
for file in *; do
echo "- ${file}"
github-release upload --user ${GHUSER} --repo ${REPO} --tag ${DEPLOYMENT_TAG} --name ${file} --file ${file}
done
echo -e "\n\n=== Recorded checksums ==="
cat SHA256SUMS
cd -

2
main.go
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@ -4,7 +4,7 @@ import (
"fmt"
"syscall/js"
openssl "github.com/Luzifer/go-openssl/v2"
openssl "github.com/Luzifer/go-openssl"
)
func main() {

202
vendor/github.com/Luzifer/go-openssl/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
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the Work or Derivative Works thereof, You may choose to offer,
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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.
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boilerplate notice, with the fields enclosed by brackets "[]"
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Copyright 2015- 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.
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See the License for the specific language governing permissions and
limitations under the License.

298
vendor/github.com/Luzifer/go-openssl/openssl.go generated vendored Normal file
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@ -0,0 +1,298 @@
package openssl
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/md5"
"crypto/rand"
"crypto/sha1"
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
"io"
)
// ErrInvalidSalt is returned when a salt with a length of != 8 byte is passed
var ErrInvalidSalt = errors.New("Salt needs to have exactly 8 byte")
// OpenSSL is a helper to generate OpenSSL compatible encryption
// with autmatic IV derivation and storage. As long as the key is known all
// data can also get decrypted using OpenSSL CLI.
// Code from http://dequeue.blogspot.de/2014/11/decrypting-something-encrypted-with.html
type OpenSSL struct {
openSSLSaltHeader string
}
type openSSLCreds struct {
key []byte
iv []byte
}
// New instanciates and initializes a new OpenSSL encrypter
func New() *OpenSSL {
return &OpenSSL{
openSSLSaltHeader: "Salted__", // OpenSSL salt is always this string + 8 bytes of actual salt
}
}
// DecryptString decrypts a string that was encrypted using OpenSSL and AES-256-CBC
func (o OpenSSL) DecryptString(passphrase, encryptedBase64String string) ([]byte, error) {
return o.DecryptBytes(passphrase, []byte(encryptedBase64String))
}
var hashFuncList = []DigestFunc{DigestSHA256Sum, DigestMD5Sum, DigestSHA1Sum}
func (o OpenSSL) decodeWithPassphrase(passphrase string, data []byte, salt []byte, hashFunc DigestFunc) ([]byte, error) {
creds, err := o.extractOpenSSLCreds([]byte(passphrase), salt, hashFunc)
if err != nil {
return nil, err
}
return o.decrypt(creds.key, creds.iv, data)
}
// DecryptBytes takes a slice of bytes with base64 encoded, encrypted data to decrypt
func (o OpenSSL) DecryptBytes(passphrase string, encryptedBase64Data []byte) ([]byte, error) {
data := make([]byte, base64.StdEncoding.DecodedLen(len(encryptedBase64Data)))
n, err := base64.StdEncoding.Decode(data, encryptedBase64Data)
if err != nil {
return nil, fmt.Errorf("Could not decode data: %s", err)
}
// Truncate to real message length
data = data[0:n]
if len(data) < aes.BlockSize {
return nil, fmt.Errorf("Data is too short")
}
saltHeader := data[:aes.BlockSize]
if string(saltHeader[:8]) != o.openSSLSaltHeader {
return nil, fmt.Errorf("Does not appear to have been encrypted with OpenSSL, salt header missing")
}
salt := saltHeader[8:]
tmp := make([]byte, len(data))
for _, f := range hashFuncList {
copy(tmp, data)
result, err := o.decodeWithPassphrase(passphrase, tmp, salt, f)
if err == nil {
return result, nil
}
}
return nil, err
}
func (o OpenSSL) decrypt(key, iv, data []byte) ([]byte, error) {
if len(data) == 0 || len(data)%aes.BlockSize != 0 {
return nil, fmt.Errorf("bad blocksize(%v), aes.BlockSize = %v", len(data), aes.BlockSize)
}
c, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
cbc := cipher.NewCBCDecrypter(c, iv)
cbc.CryptBlocks(data[aes.BlockSize:], data[aes.BlockSize:])
out, err := o.pkcs7Unpad(data[aes.BlockSize:], aes.BlockSize)
if out == nil {
return nil, err
}
return out, nil
}
// EncryptBytes encrypts a slice of bytes in a manner compatible to OpenSSL encryption
// functions using AES-256-CBC as encryption algorithm. This function generates
// a random salt on every execution.
func (o OpenSSL) EncryptBytes(passphrase string, plainData []byte) ([]byte, error) {
salt, err := o.GenerateSalt()
if err != nil {
return nil, err
}
return o.EncryptBytesWithSaltAndDigestFunc(passphrase, salt, plainData, DigestSHA256Sum)
}
// EncryptString encrypts a string in a manner compatible to OpenSSL encryption
// functions using AES-256-CBC as encryption algorithm. This function generates
// a random salt on every execution.
func (o OpenSSL) EncryptString(passphrase, plaintextString string) ([]byte, error) {
salt, err := o.GenerateSalt()
if err != nil {
return nil, err
}
return o.EncryptBytesWithSaltAndDigestFunc(passphrase, salt, []byte(plaintextString), DigestSHA256Sum)
}
// EncryptStringWithSalt encrypts a string in a manner compatible to OpenSSL
// encryption functions using AES-256-CBC as encryption algorithm. The salt
// needs to be passed in here which ensures the same result on every execution
// on cost of a much weaker encryption as with EncryptString.
//
// The salt passed into this function needs to have exactly 8 byte.
//
// If you don't have a good reason to use this, please don't! For more information
// see this: https://en.wikipedia.org/wiki/Salt_(cryptography)#Common_mistakes
//
// Deprecated: Use EncryptBytesWithSaltAndDigestFunc instead.
func (o OpenSSL) EncryptStringWithSalt(passphrase string, salt []byte, plaintextString string) ([]byte, error) {
return o.EncryptBytesWithSaltAndDigestFunc(passphrase, salt, []byte(plaintextString), DigestSHA256Sum)
}
// EncryptBytesWithSalt encrypts a slice of bytes in a manner compatible to OpenSSL
// encryption functions using AES-256-CBC as encryption algorithm. The salt
// needs to be passed in here which ensures the same result on every execution
// on cost of a much weaker encryption as with EncryptString.
//
// The salt passed into this function needs to have exactly 8 byte.
//
// If you don't have a good reason to use this, please don't! For more information
// see this: https://en.wikipedia.org/wiki/Salt_(cryptography)#Common_mistakes
//
// Deprecated: Use EncryptBytesWithSaltAndDigestFunc instead.
func (o OpenSSL) EncryptBytesWithSalt(passphrase string, salt, plainData []byte) ([]byte, error) {
return o.EncryptBytesWithSaltAndDigestFunc(passphrase, salt, plainData, DigestSHA256Sum)
}
// EncryptBytesWithSaltAndDigestFunc encrypts a slice of bytes in a manner compatible to OpenSSL
// encryption functions using AES-256-CBC as encryption algorithm. The salt
// needs to be passed in here which ensures the same result on every execution
// on cost of a much weaker encryption as with EncryptString.
//
// The salt passed into this function needs to have exactly 8 byte.
//
// The hash function corresponds to the `-md` parameter of OpenSSL. For OpenSSL pre-1.1.0c
// DigestMD5Sum was the default, since then it is DigestSHA256Sum.
//
// If you don't have a good reason to use this, please don't! For more information
// see this: https://en.wikipedia.org/wiki/Salt_(cryptography)#Common_mistakes
func (o OpenSSL) EncryptBytesWithSaltAndDigestFunc(passphrase string, salt, plainData []byte, hashFunc DigestFunc) ([]byte, error) {
if len(salt) != 8 {
return nil, ErrInvalidSalt
}
data := make([]byte, len(plainData)+aes.BlockSize)
copy(data[0:], o.openSSLSaltHeader)
copy(data[8:], salt)
copy(data[aes.BlockSize:], plainData)
creds, err := o.extractOpenSSLCreds([]byte(passphrase), salt, hashFunc)
if err != nil {
return nil, err
}
enc, err := o.encrypt(creds.key, creds.iv, data)
if err != nil {
return nil, err
}
return []byte(base64.StdEncoding.EncodeToString(enc)), nil
}
// GenerateSalt generates a random 8 byte salt
func (o OpenSSL) GenerateSalt() ([]byte, error) {
salt := make([]byte, 8) // Generate an 8 byte salt
_, err := io.ReadFull(rand.Reader, salt)
if err != nil {
return nil, err
}
return salt, nil
}
func (o OpenSSL) encrypt(key, iv, data []byte) ([]byte, error) {
padded, err := o.pkcs7Pad(data, aes.BlockSize)
if err != nil {
return nil, err
}
c, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
cbc := cipher.NewCBCEncrypter(c, iv)
cbc.CryptBlocks(padded[aes.BlockSize:], padded[aes.BlockSize:])
return padded, nil
}
// openSSLEvpBytesToKey follows the OpenSSL (undocumented?) convention for extracting the key and IV from passphrase.
// It uses the EVP_BytesToKey() method which is basically:
// D_i = HASH^count(D_(i-1) || password || salt) where || denotes concatentaion, until there are sufficient bytes available
// 48 bytes since we're expecting to handle AES-256, 32bytes for a key and 16bytes for the IV
func (o OpenSSL) extractOpenSSLCreds(password, salt []byte, hashFunc DigestFunc) (openSSLCreds, error) {
var m []byte
prev := []byte{}
for len(m) < 48 {
prev = o.hash(prev, password, salt, hashFunc)
m = append(m, prev...)
}
return openSSLCreds{key: m[:32], iv: m[32:48]}, nil
}
func (o OpenSSL) hash(prev, password, salt []byte, hashFunc DigestFunc) []byte {
a := make([]byte, len(prev)+len(password)+len(salt))
copy(a, prev)
copy(a[len(prev):], password)
copy(a[len(prev)+len(password):], salt)
return hashFunc(a)
}
// DigestFunc are functions to create a key from the passphrase
type DigestFunc func([]byte) []byte
// DigestMD5Sum uses the (deprecated) pre-OpenSSL 1.1.0c MD5 digest to create the key
func DigestMD5Sum(data []byte) []byte {
h := md5.New()
h.Write(data)
return h.Sum(nil)
}
// DigestSHA1Sum uses SHA1 digest to create the key
func DigestSHA1Sum(data []byte) []byte {
h := sha1.New()
h.Write(data)
return h.Sum(nil)
}
// DigestSHA256Sum uses SHA256 digest to create the key which is the default behaviour since OpenSSL 1.1.0c
func DigestSHA256Sum(data []byte) []byte {
h := sha256.New()
h.Write(data)
return h.Sum(nil)
}
// pkcs7Pad appends padding.
func (o OpenSSL) pkcs7Pad(data []byte, blocklen int) ([]byte, error) {
if blocklen <= 0 {
return nil, fmt.Errorf("invalid blocklen %d", blocklen)
}
padlen := 1
for ((len(data) + padlen) % blocklen) != 0 {
padlen = padlen + 1
}
pad := bytes.Repeat([]byte{byte(padlen)}, padlen)
return append(data, pad...), nil
}
// pkcs7Unpad returns slice of the original data without padding.
func (o OpenSSL) pkcs7Unpad(data []byte, blocklen int) ([]byte, error) {
if blocklen <= 0 {
return nil, fmt.Errorf("invalid blocklen %d", blocklen)
}
if len(data)%blocklen != 0 || len(data) == 0 {
return nil, fmt.Errorf("invalid data len %d", len(data))
}
padlen := int(data[len(data)-1])
if padlen > blocklen || padlen == 0 {
return nil, fmt.Errorf("invalid padding")
}
pad := data[len(data)-padlen:]
for i := 0; i < padlen; i++ {
if pad[i] != byte(padlen) {
return nil, fmt.Errorf("invalid padding")
}
}
return data[:len(data)-padlen], nil
}