Secure delivery of files to authorized recipients

1. A method for decoding an encrypted file, said method comprising:

receiving, by a recipient computer of a recipient from a sender computer of a sender, the encrypted file;

wherein the encrypted file has a filename that includes an encoded address in the filename, wherein the encoded address identifies where a voice check ticket is stored, wherein the voice check ticket comprises voice check text, and wherein a prior name of the encrypted file and the encoded address are merged together within the filename;

parsing, by the recipient computer, the received filename;

extracting, by the recipient computer, the encoded address from the parsed filename;

accessing, by the recipient computer, the voice check ticket at the encoded address extracted from the parsed filename;

receiving, by the recipient computer from the voice check ticket, the voice check text;

displaying, by the recipient computer, the received voice check text visually on a computer display of the recipient computer;

prompting, by the recipient computer, the recipient to read aloud the displayed voice check text;

receiving, by the recipient computer, an audio signal from a reading aloud by the prompted recipient of the displayed voice check text;

receiving, by the recipient computer, an identifier of the recipient;

transmitting, by the recipient computer to a server computer comprising a voice check server, the received audio signal and the received identifier of the recipient;

wherein the voice check server has converted the audio signal to first text, determined that the first text matches the received voice check text, computed a voiceprint of the audio signal, and determined that the computed voiceprint matches a voiceprint stored in a voiceprint database of the voice check server and associated with the transmitted identifier of the recipient;

receiving, by the recipient computer from the server computer, an encryption key;

and

decrypting, by the recipient computer, the received encrypted file using the received encryption key.

2. The method of claim 1 , wherein the voice check ticket further comprises the encryption key.

3. The method of claim 2 , wherein the voice check ticket further comprises a voiceprint identifier assigned to a voiceprint of the recipient.

4. The method of claim 3 , wherein the voice check ticket consists of the voiceprint identifier, the encryption key, and the voice check text.

5. The method of claim 1 , wherein the address is a Universal Resource Locator (URL).

6. The method of claim 1 , wherein said receiving the encrypted file comprises receiving the encrypted file as an attachment to an e-mail message from the sender to the recipient, and wherein the voice check text is a copy of a portion of e-mail text of the e-mail message.

7. A system comprising:

a recipient computer of a recipient;

and a computer-readable storage medium storing instructions which, when executed by the recipient computer, causes the computer to perform a method for decoding an encrypted file, said method comprising:

receiving the encrypted file;

wherein the encrypted file has a filename that includes an encoded address in the filename, wherein the encoded address identifies where a voice check ticket is stored, wherein the voice check ticket comprises voice check text, and wherein a prior name of the encrypted file and the encoded address are merged together within the filename;

parsing the received filename;

extracting the encoded address from the parsed filename;

accessing the voice check ticket at the encoded address extracted from the parsed filename;

receiving from the voice check ticket, the voice check text;

displaying the received voice check text visually on a computer display of the recipient computer;

prompting the recipient to read aloud the displayed voice check text;

receiving, by the recipient computer, an audio signal from a reading aloud by the prompted recipient of the displayed voice check text;

receiving an identifier of the recipient;

transmitting to a server computer comprising a voice check server, the received audio signal and the received identifier of the recipient;

wherein voice check the server computer has converted the audio signal to first text, determined that the first text matches the received voice check text, computed a voiceprint of the audio signal, and determined that the computed voiceprint matches a voiceprint stored in a voiceprint database of the voice check server and associated with the transmitted identifier of the recipient;

receiving from the server computer, an encryption key;

and

decrypting the received encrypted file using the received encryption key.

8. The system of claim 7 , wherein the voice check ticket further comprises the encryption key.

9. The system of claim 8 , wherein the voice check ticket further comprises a voiceprint identifier assigned to a voiceprint of the recipient.

10. The system of claim 9 , wherein the voice check ticket consists of the voiceprint identifier, the encryption key, and the voice check text.

11. The system of claim 7 , wherein the address is a Universal Resource Locator (URL).

12. The system of claim 7 , wherein said receiving the encrypted file comprises receiving the encrypted file as an attachment to an e-mail message from the sender to the recipient, and wherein the voice check text is a copy of a portion of e-mail text of the e-mail message.

13. A non-transitory storage medium comprising instructions which, when executed by a recipient computer of a recipient, causes the recipient computer to implement a method for decoding an encrypted file, said method comprising:

receiving from a sender computer of a sender, the encrypted file;

wherein the encrypted file has a filename that includes an encoded address in the filename, wherein the encoded address identifies where a voice check ticket is stored, wherein the voice check ticket comprises voice check text, and wherein a prior name of the encrypted file and the encoded address are merged together within the filename;

parsing the received filename;

extracting the encoded address from the parsed filename;

accessing the voice check ticket at the encoded address extracted from the parsed filename;

receiving from the voice check ticket, the voice check text;

displaying the received voice check text visually on a computer display of the recipient computer;

prompting the recipient to read aloud the displayed voice check text;

receiving an audio signal from a reading aloud by the prompted recipient of the displayed voice check text;

receiving an identifier of the recipient;

transmitting to a server computer comprising a voice check server, the received audio signal and the received identifier of the recipient;

wherein the voice check server has converted the audio signal to first text, determined that the first text matches the received voice check text, computed a voiceprint of the audio signal, and determined that the computed voiceprint matches a voiceprint stored in a voiceprint database of the voice check server and associated with the transmitted identifier of the recipient;

receiving from the server computer, an encryption key;

decrypting the received encrypted file using the received encryption key.

14. The storage medium of claim 13 , wherein the voice check ticket further comprises the encryption key.

15. The storage medium of claim 14 , wherein the voice check ticket further comprises a voiceprint identifier assigned to a voiceprint of the recipient.

16. The storage medium of claim 15 , wherein the voice check ticket consists of the voiceprint identifier, the encryption key, and the voice check text.

17. The storage medium of claim 13 , wherein the address is a Universal Resource Locator (URL).

18. The storage medium of claim 13 , wherein said receiving the encrypted file comprises receiving the encrypted file as an attachment to an e-mail message from the sender to the recipient, and wherein the voice check text is a copy of a portion of e-mail text of the e-mail message.