A computer system includes a mechanism supporting a Secure Object that includes information that is cryptographically protected so that other software on the computer system cannot access or undetectably tamper with the information, thereby protecting both a confidentiality and an integrity of the Secure Object information from other software while making an unencrypted form of the Secure Object information available to the Secure Object itself during execution of the Secure Object. The Mechanism includes a crypto engine that decrypts and integrity-checks Secure Object information as the Secure Object information moves into the computer system from external storage and encrypts and updates an integrity value for Secure Object information as the Secure Object information moves out of the computer system to the external storage.