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(VB.NET) RSA Sign using Base64 Private KeySigns a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string. Note: This example requires Chilkat v11.0.0 or greater.
Dim success As Boolean = False ' This requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim privKey As New Chilkat.PrivateKey Dim sbPem As New Chilkat.StringBuilder sbPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",True) sbPem.AppendLine("MIIC .... j5A==",True) sbPem.AppendLine("-----END RSA PRIVATE KEY-----",True) success = privKey.LoadPem(sbPem.GetAsString()) If (success = False) Then Debug.WriteLine(privKey.LastErrorText) Exit Sub End If Dim rsa As New Chilkat.Rsa success = rsa.UsePrivateKey(privKey) If (success = False) Then Debug.WriteLine(rsa.LastErrorText) Exit Sub End If Dim bd As New Chilkat.BinData bd.AppendString("12345678","utf-8") success = rsa.SignRawBd(bd) If (success = False) Then Debug.WriteLine(rsa.LastErrorText) Exit Sub End If ' Get the base64 RSA signature. Debug.WriteLine(bd.GetEncoded("base64")) success = rsa.VerifyRawBd(bd) If (success = False) Then Debug.WriteLine(rsa.LastErrorText) Exit Sub End If Dim strOriginal As String = bd.GetString("utf-8") Debug.WriteLine(strOriginal) |
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