Visual Basic 6.0

RSA Import Public Key from Certificate PEM

See more RSA Examples

Uses a certificate's public key for RSA encryption. The public key from the certificate .pem file is used. Visual Basic 6.0

Dim success As Long
success = 0

Dim cert As New ChilkatCert

success = cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem")
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

Dim pubKey As New PublicKey
success = cert.GetPublicKey(pubKey)

Dim rsa As New ChilkatRsa
success = rsa.UsePublicKey(pubKey)

rsa.EncodingMode = "base64"
Dim encryptedStr As String
encryptedStr = rsa.EncryptStringENC("hello",0)
Debug.Print "encrypted string = " & encryptedStr