(Lianja) RSA Encrypt and OpenSSL Decrypt

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

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loRsa = createobject("CkRsa")

llSuccess = loRsa.GenerateKey(2048)

loPrivKey = loRsa.ExportPrivateKeyObj()
llSuccess = loPrivKey.SavePkcs8PemFile("qa_output/privKey.pem")
release loPrivKey

loRsa.EncodingMode = "base64"
lcPlainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
llBUsePrivateKey = .F.
lcEncryptedStr = loRsa.EncryptStringENC(lcPlainText,llBUsePrivateKey)

loBd = createobject("CkBinData")
loBd.AppendEncoded(lcEncryptedStr,"base64")
llSuccess = loBd.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

? "OK"


release loRsa
release loBd