Method of verifying integrity of program using hash

A method for verifying the integrity of first to Nth script files (N is a natural number greater than or equal to 2), the method comprising:

• sequentially calling the first to Nth scripts in order to execute the scripts;
• verifying a self hash to verify, by the called Kth script (K=1, . . . , N-1), the integrity thereof by using a hash;
• and
• verifying a link hash by setting any one of the first to Kth scripts as a verification script and setting a (K+1)th script to be called as a script to be verified so that the verification script verifies the integrity of the script to be verified by using a hash.

A device for verifying the integrity of first to Nth binaries (N is a natural number greater than or equal to 2), the device comprising:

• an auxiliary memory unit configured to store the first to Nth binaries;
• a main memory configured to load the first to Nth binaries in order to execute the binaries from the auxiliary memory unit;
• a self hash verification unit configured to verify, by a Kth binary (K=1, . . . , N-1) which has been loaded into the main memory, the integrity thereof by using a hash;
• and
• a link hash verification unit configured to set any one of the first to Kth binaries loaded into the main memory as a verification binary and set a (K+1)th binary to be loaded into the main memory as a binary to be verified so that the verification binary verifies the integrity of the binary to be verified by using a hash.

A method for verifying the integrity of first to Nth binaries (N is a natural number greater than or equal to 2), the method comprising:

• loading a Kth binary (K=1, N) among the first to Nth binaries into a main memory in order to execute the Kth binary;
• verifying a self hash to verify, by the Kth binary loaded into the main memory, the integrity thereof by using a hash;
• and
• when an unverified binary, the integrity of which has not been verified, is called while the loaded binaries are operated, verifying a link hash by setting a calling binary as a verification binary and setting the unverified binary to be loaded into the main memory as a binary to be verified so that the verification binary verifies the integrity of the binary to be verified by using a hash and, when the integrity is verified, returns to the loading step.