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(Excel) RSASSA-PSS Algorithm with SHA256 HashingRSA encrypt a SHA256 hash with OAEP padding.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim privkey As Chilkat.PrivateKey Set privkey = Chilkat.NewPrivateKey ' Load the private key object from a PEM file. ' (To load from a PEM string, call LoadPem instead.) success = privkey.LoadPemFile("somePath/myPrivateKey.pem") If (success <> True) Then Debug.Print privkey.LastErrorText Exit Sub End If Dim rsa As Chilkat.Rsa Set rsa = Chilkat.NewRsa ' Use RSA-PSS by setting OaepPadding = True rsa.OaepPadding = True ' Use SHA256 rsa.OaepHash = "SHA-256" success = rsa.ImportPrivateKeyObj(privkey) ' Generate a base64 signature. rsa.EncodingMode = "base64" sigStr = rsa.SignStringENC("String to be signed","SHA-256") If (rsa.LastMethodSuccess <> True) Then Debug.Print rsa.LastErrorText Exit Sub End If Debug.Print "Signature: "; sigStr |
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