mirror of
https://github.com/Luzifer/go-openssl.git
synced 2024-10-29 18:59:43 +00:00
86 lines
3 KiB
Markdown
86 lines
3 KiB
Markdown
[](https://pkg.go.dev/github.com/Luzifer/go-openssl/v4)
|
|
[](https://goreportcard.com/report/github.com/Luzifer/go-openssl)
|
|
|
|
|
|
[](https://travis-ci.org/Luzifer/go-openssl)
|
|
|
|
# Luzifer / go-openssl
|
|
|
|
`go-openssl` is a small library wrapping the `crypto/aes` functions in a way the output is compatible to OpenSSL / CryptoJS. For all encryption / decryption processes AES256 is used so this library will not be able to decrypt messages generated with other than `openssl aes-256-cbc`. If you're using CryptoJS to process the data you also need to use AES256 on that side.
|
|
|
|
## Version support
|
|
|
|
For this library only the latest major version is supported. All prior major versions should no longer be used.
|
|
|
|
The versioning is following [SemVer](https://semver.org/) which means upgrading to a newer major version will break your code!
|
|
|
|
## OpenSSL compatibility
|
|
|
|
### 1.1.0c
|
|
|
|
Starting with `v2.0.0` `go-openssl` generates the encryption keys using `sha256sum` algorithm. This is the default introduced in OpenSSL 1.1.0c. When encrypting data you can choose which digest method to use and therefore also continue to use `md5sum`. When decrypting OpenSSL encrypted data `md5sum`, `sha1sum` and `sha256sum` are supported.
|
|
|
|
### 1.1.1
|
|
|
|
Starting with `v4.0.0` `go-openssl` is capable of using the PBKDF2 key derivation method for encryption. You can choose to use it by passing the corresponding `CredsGenerator`.
|
|
|
|
## Installation
|
|
|
|
```bash
|
|
# Get the latest version
|
|
go get github.com/Luzifer/go-openssl/v4
|
|
```
|
|
|
|
## Usage example
|
|
|
|
The usage is quite simple as you don't need any special knowledge about OpenSSL and/or AES256:
|
|
|
|
### Encrypt
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
openssl "github.com/Luzifer/go-openssl/v4"
|
|
)
|
|
|
|
func main() {
|
|
plaintext := "Hello World!"
|
|
passphrase := "z4yH36a6zerhfE5427ZV"
|
|
|
|
o := openssl.New()
|
|
|
|
enc, err := o.EncryptBytes(passphrase, []byte(plaintext), PBKDF2SHA256)
|
|
if err != nil {
|
|
fmt.Printf("An error occurred: %s\n", err)
|
|
}
|
|
|
|
fmt.Printf("Encrypted text: %s\n", string(enc))
|
|
}
|
|
```
|
|
|
|
### Decrypt
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
openssl "github.com/Luzifer/go-openssl/v4"
|
|
)
|
|
|
|
func main() {
|
|
opensslEncrypted := "U2FsdGVkX19ZM5qQJGe/d5A/4pccgH+arBGTp+QnWPU="
|
|
passphrase := "z4yH36a6zerhfE5427ZV"
|
|
|
|
o := openssl.New()
|
|
|
|
dec, err := o.DecryptBytes(passphrase, []byte(opensslEncrypted), BytesToKeyMD5)
|
|
if err != nil {
|
|
fmt.Printf("An error occurred: %s\n", err)
|
|
}
|
|
|
|
fmt.Printf("Decrypted text: %s\n", string(dec))
|
|
}
|
|
```
|
|
|
|
## Testing
|
|
|
|
To execute the tests for this library you need to be on a system having `/bin/bash` and `openssl` available as the compatibility of the output is tested directly against the `openssl` binary. The library itself should be usable on all operating systems supported by Go and `crypto/aes`.
|