Confidential automated speech recognition

A computer implemented method for confidential data processing, the method comprising:

• requesting, by a client computer, an enclave public key from an Application Programming
• Interface, API;
• requesting, by the API, the enclave public key from an enclave;
• generating, by the enclave, the enclave public key;
• wherein the enclave public key is stored in an encrypted memory of the enclave along with a corresponding enclave private key;
• returning, by the confidential enclave, the enclave public key to the API;
• returning, by the API, the enclave public key to the client computer;
• encrypting, by the client computer, one or more files using the enclave public key;
• sending, by the client computer;
• the one or more encrypted files and a client public key to the API;
• sending, by the API, the one or more encrypted file and the client public key to the enclave;
• decrypting, by the enclave, the one or more encrypted files, using the enclave private key;
• wherein the decrypted one or more files are kept in the encrypted memory of the confidential enclave;
• processing, by the enclave, the one or more files to produce one or more result files;
• encrypting, by the enclave, the one or more result files using the client public key;
• sending by the enclave, the one or more result files to the API;
• sending by the API, the one or more audio files to the client computer;
• decrypting, by the client computer, one or more result files using a client private key.