B4X Requires Chilkat v11.0.0+

RSA Sign utf-8 Byte Representation of String

See more RSA Examples

Demontstrates how to sign the utf-8 byte representation of a string. B4X

Dim success As Boolean = False

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

'  Load an RSA private key for signing.
Dim privKey As ChilkatPrivateKey
privKey.Initialize("privKey")
success = privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem", "passwd")
If success = False Then
    Log(privKey.LastErrorText)
    Return
End If


Dim rsa As ChilkatRsa
rsa.Initialize
success = rsa.UsePrivateKey(privKey)
If success = False Then
    Log(rsa.LastErrorText)
    Return
End If


Dim originalData As String = "This is the string to be hashed an RSA signed."

'  Indicate that we want the utf-8 byte representation of the string to be signed
rsa.Charset = "utf-8"

'  We want the RSA signature in base64 format
rsa.EncodingMode = "base64"

Dim sigBase64 As String = rsa.SignStringENC(originalData, "sha256")
Log(sigBase64)