(Visual FoxPro) RSA Decrypt using PEM

This example demonstrates decryping RSA encrypted data that is base64 encoded. It uses a private key loaded from a PEM file.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loRsa
LOCAL loKey
LOCAL lnSuccess
LOCAL lcEncryptedStr
LOCAL lnUsePrivateKey
LOCAL lcDecryptedStr

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rsa')
loRsa = CreateObject('Chilkat.Rsa')

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.PrivateKey')
loKey = CreateObject('Chilkat.PrivateKey')

* Load an RSA private key from an unencrypted PEM file:
* (To load from an encrypted PEM file, call LoadEncryptedPemFile instead.)

lnSuccess = loKey.LoadPemFile("qa_data/rsa/decryptTest/priv.pem")
IF (lnSuccess <> 1) THEN
    ? loKey.LastErrorText
    RELEASE loRsa
    RELEASE loKey
    CANCEL
ENDIF

* Make the key available to the RSA object
lnSuccess = loRsa.ImportPrivateKeyObj(loKey)
IF (lnSuccess <> 1) THEN
    ? loRsa.LastErrorText
    RELEASE loRsa
    RELEASE loKey
    CANCEL
ENDIF

lcEncryptedStr = "pP9XFJEsGgxPNHEgNiLB5H5ksCOXDk/G49BPTog1jKLAhYofV4UTH5k2TOYiqRnDnKs8+8uPoN/IxdiGXvuYG8HRzN0HtkhoZO/AxeyaB9S7eddCUlT0Pl2PEB2yQ9HG5rM7jqYOD6MAM4cuX7hqT8fa8tbzJzmBwdfFDBz94bwQjULHiO+gklIBC4vhkXT4yjuvEjxTAKU6tJeZYkBooJNdS/vE5RZRpuF6bGZU41Qc17qFR+iReBq+9f8IMmw8WR8fMbOCaygOfFS1nw7JVsIMGsAIXS8rUaJ/2DfGPfQx5HCiVtTOreGYRUI3esAQjnvUCnavZyQgs53nl7e2aA=="

loRsa.EncodingMode = "base64"

lnUsePrivateKey = 1
lcDecryptedStr = loRsa.DecryptStringENC(lcEncryptedStr,lnUsePrivateKey)

? "Decrypted:"
? lcDecryptedStr

RELEASE loRsa
RELEASE loKey