EncryptAndSign Method

Encrypts and signs a buffer.

Syntax

QByteArray EncryptAndSign(const QByteArray& qbaBuffer, int iStartIndex, int iCount);

Remarks

Use this method to encrypt and sign a byte array and get the protected message in another byte array.

Specify encryption keys in EncryptingKeys property, and/or encryption password via Passphrase property. Use SigningKeys to provide the signing keys.

Please note that you might need to provide a passphrase to decrypt your signing key. This can be done via KeyPassphraseNeeded event, or by assigning the passphrase to the key object's Passphrase property.

Error Handling

This method returns a Byte Array value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.