Handling receipts in cross component message processing

A mobile wireless communication device comprising a processor adapted to:

• detect receipt of an instruction to arrange transmission of a message and a signature for said message, where said message is to include a new message and an original message;
• transmit a processing request to a server associated with said mobile wireless communication device, said request including said new message, a reference to said original message and an indication that a receipt is to be requested;
• generate expected receipt content;
• store said expected receipt content;
• receive a signing request from said server, said signing request including a hash of said message;
• store said hash in association with said expected receipt content;
• obtain a private cryptographic key;
• employ said private cryptographic key to encrypt said hash to form a digital signature;
• and
• transmit said digital signature to said server.

A computer-readable medium containing computer-executable instructions that, when performed by a processor, cause said processor to:

• detect receipt of an instruction to arrange transmission of a message and a signature for said message, where said message is to include a new message and an original message;
• transmit a processing request to a server associated with said mobile wireless communication device, said request including said new message, a reference to said original message and an indication that a receipt is to be requested;
• generate expected receipt content;
• store said expected receipt content;
• receive a signing request from said server, said signing request including a hash of said message;
• store said hash in association with said expected receipt content;
• obtain a private cryptographic key;
• employ said private cryptographic key to encrypt said hash to form a digital signature;
• and
• transmit said digital signature to said server.

A method of processing a message, said method comprising:

• receiving a message;
• determining that said message includes a receipt;
• extracting said receipt from said message;
• obtaining expected receipt content;
• validating said receipt based on said expected receipt content to obtain a validation result;
• transmitting said message to a destination;
• and
• transmitting said validation result to said destination.

A mail server comprising a processor adapted to:

• receive a message;
• determine that said message includes a receipt;
• extract said receipt from said message;
• obtain expected receipt content;
• validate said receipt based on said expected receipt content to obtain a validation result;
• transmit said message to a destination;
• and
• transmit said validation result to said destination.

A computer-readable medium containing computer-executable instructions that, when performed by a processor, cause said processor to:

• receive a message;
• determine that said message includes a receipt;
• extract said receipt from said message;
• obtain expected receipt content;
• validate said receipt based on said expected receipt content to obtain a validation result;
• transmit said message to a destination;
• and
• transmit said validation result to said destination.

A method of processing a message, said method comprising:

• receiving a message;
• extracting said receipt from said message;
• formulating a receipt validation request to include said receipt;
• transmitting said receipt validation request to a server;
• and
• receiving a validation result from said server.