(Lianja) RSA OAEP Padding

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding.

Note: This example requires Chilkat v11.0.0 or greater.

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llSuccess = .F.

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

loRsa = createobject("CkRsa")

// RSA public key in XML format:
lcPubKeyXml = "<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>"

loPubKey = createobject("CkPublicKey")
llSuccess = loPubKey.LoadFromString(lcPubKeyXml)
if (llSuccess = .F.) then
    ? loPubKey.LastErrorText
    release loRsa
    release loPubKey
    return
endif

llSuccess = loRsa.UsePublicKey(loPubKey)
if (llSuccess = .F.) then
    ? loRsa.LastErrorText
    release loRsa
    release loPubKey
    return
endif

// To use Optimal Asymmetric Encryption Padding (OAEP) padding,
// simply set the PkcsPadding property to .F.
loRsa.PkcsPadding = .F.

// Encrypt a string and return the encrypted data base64-encoded:
loRsa.EncodingMode = "base64"

lcPlainText = "RSA Encryption should be easy."

llUsePrivateKey = .F.
lcEncryptedStr = loRsa.EncryptStringENC(lcPlainText,llUsePrivateKey)
? lcEncryptedStr


release loRsa
release loPubKey