如何使用公钥在 Ubuntu 中使用 openssl 加密 XML 文件？

Question

can any one able to tell me how to encrypt and decrypt an xml file using openssl. i can able to create privatekey using the linux command openssl genrsa -out private.pem 1024 and got my private key as private.pem also i create public key using openssl rsa -in private.pem -out public.pem -outform PEM -pubout got my public key as public.pem now wat i want is i want to encrypt the xml file using this public key and again want to decrypt using my private key....please help me... thanks in advance

Answer 1

Encrypt with public key:

openssl rsautl -encrypt -inkey public.pem -pubin -in xml.file -out encrypted.enc

Decrypt with private key:

openssl rsautl -decrypt -inkey private.pem -in encrypted.enc -out xml.txt

Answer 2

I think what you are looking for is this:

1. If you have a PEM encoded key:

    openssl pkeyutl -encrypt -in FileToEncrypt -out EncryptedData.enc -inkey ThePathToYourPublicKey -keyform PEM

   If you have a DER encoded key:

    openssl pkeyutl -encrypt -in FileToEncrypt -out EncryptedData.enc -inkey ThePathToYourPublicKey -keyform DER

2. You then decrypt with:

    openssl pkeyutl -decrypt -in EncryptedData.enc -out DecryptedFile -inkey ThePathToYourPrivateKey

For more information about this you can consult openssl's pkeyutil documentation .

If you want to use S/MIME packaging (a standard used to encrypt/decrypt/sign e-mails), see openssl's smime documentation .