(Lianja) 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.

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

loRsa = createobject("CkRsa")

loKey = createobject("CkPrivateKey")

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

llSuccess = loKey.LoadPemFile("qa_data/rsa/decryptTest/priv.pem")
if (llSuccess <> .T.) then
    ? loKey.LastErrorText
    release loRsa
    release loKey
    return
endif

// Make the key available to the RSA object
llSuccess = loRsa.ImportPrivateKeyObj(loKey)
if (llSuccess <> .T.) then
    ? loRsa.LastErrorText
    release loRsa
    release loKey
    return
endif

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

loRsa.EncodingMode = "base64"

llUsePrivateKey = .T.
lcDecryptedStr = loRsa.DecryptStringENC(lcEncryptedStr,llUsePrivateKey)

? "Decrypted:"
? lcDecryptedStr


release loRsa
release loKey