SHA-512不是IOS模擬器

Question

我採取的是將iOS上運行的移動應用SHA-512功能的正常工作，此功能在所有的瀏覽器包括Safari工作正常。

我正在使用IOS模擬器測試我的應用程序。

我的應用程序在調用SHA-512的功能從一個網頁三次/點擊。問題是，首先調用sha-512函數會產生正確的結果，但在第二次和第三次調用時會產生錯誤的結果。

在此先感謝

Answer 1

這是我的代碼

//Creating Hash Value 
NSString *hashkey = [NSString stringWithFormat:@"data"]; 
// PHP uses ASCII encoding, not UTF 
NSLog(@"hashkey : %@",hashkey); 
const char *s = [hashkey cStringUsingEncoding:NSASCIIStringEncoding]; 
NSData *keyData = [NSData dataWithBytes:s length:strlen(s)]; 

// This is the destination SHA512_Final 
uint8_t digest[CC_SHA512_DIGEST_LENGTH] = {0}; 
// This one function does an unkeyed SHA1 hash of your hash data 
CC_SHA512(keyData.bytes, keyData.length, digest); 

// Now convert to NSData structure to make it usable again 
NSData *out = [NSData dataWithBytes:digest length:CC_SHA512_DIGEST_LENGTH]; 
// description converts to hex but puts <> around it and spaces every 4 bytes 
NSString *hash = [out description]; 
hash = [hash stringByReplacingOccurrencesOfString:@" " withString:@""]; 
hash = [hash stringByReplacingOccurrencesOfString:@"<" withString:@""]; 
hash = [hash stringByReplacingOccurrencesOfString:@">" withString:@""]; 

希望它可以幫助你..