Xojo Plugin

Generate RSA Key and Export to PKCS1 / PKCS8

See more RSA Examples

_LANGUAGE_ example code showing how to generate an RSA public/private key and save to PKCS1 and PKCS8 format files. In a PKCS1 or PKCS8 formatted file, the key is stored in binary ASN.1 format (and ASN.1 is itself written according to DER -- Distinguished Encoding Rules). A PEM file simply contains the binary ASN.1 base64 encoded and delimited by BEGIN/END lines. PKCS1 format files are never encrypted. PKCS8 can be encrypted or unencrypted. Public keys are never encrypted (there is no need). Private keys *should* always be encrypted - unless perhaps the unencrypted private key is obtained and itself stored in some sort of secure place. Xojo Plugin

Dim success As Boolean
success = False

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

Dim rsa As New Chilkat.Rsa

// Generate a 2048-bit key.  Chilkat RSA supports
// key sizes ranging from 512 bits to 8192 bits.
Dim privKey As New Chilkat.PrivateKey
success = rsa.GenKey(2048,privKey)
If (success = False) Then
    System.DebugLog(rsa.LastErrorText)
    Return
End If

// Get the public key
Dim pubKey As New Chilkat.PublicKey
success = privKey.ToPublicKey(pubKey)

// Get the public key as a PKCS8 PEM string
Dim pubKeyPem As String
pubKeyPem = pubKey.GetPem(False)
System.DebugLog(pubKeyPem)

// Get the public key in PKCS8 format, in a Base64 encoded string.
Dim pubKeyPkcs8Base64 As String
pubKeyPkcs8Base64 = pubKey.GetEncoded(False,"base64")
System.DebugLog(pubKeyPkcs8Base64)

// Get the public key in PKCS1 format, in a Base64 encoded string.
Dim pubKeyPkcs1Base64 As String
pubKeyPkcs1Base64 = pubKey.GetEncoded(True,"base64")
System.DebugLog(pubKeyPkcs1Base64)

// Get the private key in a PKCS8 PEM string.
Dim privKeyPem As String
privKeyPem = privKey.GetPkcs8Pem()
System.DebugLog(privKeyPem)

// Get the private key in a PKCS8 encrypted PEM string.
Dim privKeyEncPem As String
privKeyEncPem = privKey.GetPkcs8EncryptedPem("myPassword")
System.DebugLog(privKeyEncPem)

// Get the private key in PKCS1 Base64 format
Dim privKeyPkcs1Base64 As String
privKeyPkcs1Base64 = privKey.GetPkcs1ENC("base64")
System.DebugLog(privKeyPkcs1Base64)

// Get the private key in PKCS8 Base64 format
Dim privKeyPkcs8Base64 As String
privKeyPkcs8Base64 = privKey.GetPkcs8ENC("base64")
System.DebugLog(privKeyPkcs8Base64)

// Save to PKCS1 / PKCS8 / PEM files...

// Save the public key to PKCS8 binary DER
success = pubKey.SaveDerFile(False,"pubKey_pkcs8.der")

// Save the public key to PKCS1 binary DER
success = pubKey.SaveDerFile("pubKey_pkcs1.der")

// Save the private key to unencrypted binary PKCS1 DER.
// Note: PKCS1 is never found in an encrypted format. 
success = privKey.SavePkcs1File("privKey_pkcs1.der")

// Save the private key to unencrypted binary PKCS8
success = privKey.SavePkcs8File("privKey_pkcs8.der")

// Save the private key to encrypted binary PKCS8
success = privKey.SavePkcs8EncryptedFile("myPassword","privKey_enc_pkcs8.der")

// Save the private key to unencrypted PKCS8 PEM
success = privKey.SavePkcs8PemFile("privKey.pem")

// Save the private key to encrypted PKCS8 PEM
success = privKey.SavePkcs8EncryptedPemFile("myPassword","privKey_enc.pem")