(Go) RSA Encrypt and OpenSSL Decrypt

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    rsa := chilkat.NewRsa()

    success := rsa.GenerateKey(2048)

    privKey := rsa.ExportPrivateKeyObj()
    success = privKey.SavePkcs8PemFile("qa_output/privKey.pem")
    privKey.DisposePrivateKey()

    rsa.SetEncodingMode("base64")
    plainText := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
    bUsePrivateKey := false
    encryptedStr := rsa.EncryptStringENC(plainText,bUsePrivateKey)

    bd := chilkat.NewBinData()
    bd.AppendEncoded(*encryptedStr,"base64")
    success = bd.WriteFile("qa_output/enc.dat")

    // The OpenSSL command to decrypt is:
    // openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

    fmt.Println("OK")

    rsa.DisposeRsa()
    bd.DisposeBinData()