Created
February 10, 2010 04:22
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#include <iostream> | |
#include <mach/mach_time.h> | |
#include <stdint.h> | |
#include <CommonCrypto/CommonCryptor.h> | |
struct Timer | |
{ | |
public: | |
void start() | |
{ | |
elapsed_ = 0; | |
start_ = mach_absolute_time(); | |
} | |
void stop() | |
{ | |
end_ = mach_absolute_time(); | |
} | |
double elapsed() | |
{ | |
double elapsed = -1; | |
uint64_t difference = end_ - start_; | |
mach_timebase_info_data_t info; | |
if (mach_timebase_info(&info) == 0) { | |
elapsed = (double) difference * (double) info.numer / (double)info.denom; | |
} | |
return elapsed; | |
} | |
private: | |
uint64_t start_; | |
uint64_t end_; | |
double elapsed_; | |
}; | |
const size_t kDataLength = (4 * 1024 * 1024); | |
int test() | |
{ | |
char* data = new char[kDataLength]; | |
if (data != NULL) | |
{ | |
char key[kCCKeySizeAES128] = { | |
0xde, 0xad, 0xbe, 0xef, | |
0xde, 0xad, 0xbe, 0xef, | |
0xde, 0xad, 0xbe, 0xef, | |
0xde, 0xad, 0xbe, 0xef | |
}; | |
size_t dataOutMoved; | |
Timer encryptionTimer; | |
encryptionTimer.start(); | |
CCCryptorStatus status = CCCrypt( | |
kCCEncrypt, | |
kCCAlgorithmAES128, | |
0, | |
key, | |
kCCKeySizeAES128, | |
NULL, | |
data, | |
kDataLength, | |
data, | |
kDataLength, | |
&dataOutMoved | |
); | |
encryptionTimer.stop(); | |
if (status != kCCSuccess) { | |
std::cerr << "Encryption failed with error " << status << std::endl; | |
return 1; | |
} | |
NSLog(@"Encryption took %f seconds (%.0f MB/second)", | |
encryptionTimer.elapsed() / 1000000000.0, (4.0 / encryptionTimer.elapsed() * 1000000000.0)); | |
// Decrypt | |
Timer decryptionTimer; | |
decryptionTimer.start(); | |
status = CCCrypt( | |
kCCDecrypt, | |
kCCAlgorithmAES128, | |
0, | |
key, | |
kCCKeySizeAES128, | |
NULL, | |
data, | |
kDataLength, | |
data, | |
kDataLength, | |
&dataOutMoved | |
); | |
decryptionTimer.stop(); | |
if (status != kCCSuccess) { | |
std::cerr << "Encryption failed with error " << status << std::endl; | |
return 1; | |
} | |
NSLog(@"Decryption took %f seconds (%.0f MB/second)", | |
decryptionTimer.elapsed() / 1000000000, (4.0 / decryptionTimer.elapsed() * 1000000000)); | |
} | |
return 0; | |
} |
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