View difference between Paste ID: XkazPqSy and jZcRsfEV

 CCCrypt encryption result issue
-@implementation NSData (AES256)
+@implementation NSData (AES256)
-
+
-- (NSData *)AES256EncryptWithKey:(NSString *)key
+- (NSData *)AES256EncryptWithKey:(NSString *)key
-{
+{
-    char keyPtr[kCCKeySizeAES256+1]; // room for terminator (unused)
+    char keyPtr[kCCKeySizeAES256+1]; // room for terminator (unused)
-    bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)
+    bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)
-
+
-    // fetch key data
+    // fetch key data
-    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
+    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
-
+
-    NSUInteger dataLength = [self length];
+    NSUInteger dataLength = [self length];
-
+
-    size_t bufferSize = dataLength + kCCBlockSizeAES128;
+    size_t bufferSize = dataLength + kCCBlockSizeAES128;
-    void *buffer = malloc(bufferSize);
+    void *buffer = malloc(bufferSize);
-
+
-    size_t numBytesEncrypted = 0;
+    size_t numBytesEncrypted = 0;
-    CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,
+    CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,
-                                        keyPtr, kCCKeySizeAES256,
+                                        keyPtr, kCCKeySizeAES256,
-                                        NULL /* initialization vector (optional) */,
+                                        NULL /* initialization vector (optional) */,
-                                        [self bytes], dataLength, /* input */
+                                        [self bytes], dataLength, /* input */
-                                        buffer, bufferSize, /* output */
+                                        buffer, bufferSize, /* output */
-                                        &numBytesEncrypted);
+                                        &numBytesEncrypted);
-    if (cryptStatus == kCCSuccess) {
+    if (cryptStatus == kCCSuccess) {
-        return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
+        return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
-    }
+    }
-
+
-    free(buffer); //free the buffer;
+    free(buffer); //free the buffer;
-    return nil;
+    return nil;
-}
+
-
+
-- (NSData *)AES256DecryptWithKey:(NSString *)key {
+- (NSData *)AES256DecryptWithKey:(NSString *)key {
-    char keyPtr[kCCKeySizeAES256+1]; // room for terminator (unused)
+    char keyPtr[kCCKeySizeAES256+1]; // room for terminator (unused)
-    bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)
+    bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)
-
+
-    // fetch key data
+    // fetch key data
-    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
+    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
-
+
-    NSUInteger dataLength = [self length];
+    NSUInteger dataLength = [self length];
-
+
-    size_t bufferSize = dataLength + kCCBlockSizeAES128;
+    size_t bufferSize = dataLength + kCCBlockSizeAES128;
-    void *buffer = malloc(bufferSize);
+    void *buffer = malloc(bufferSize);
-
+
-    size_t numBytesDecrypted = 0;
+    size_t numBytesDecrypted = 0;
-    CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,
+    CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,
-                                        keyPtr, kCCKeySizeAES256,
+                                        keyPtr, kCCKeySizeAES256,
-                                        NULL /* initialization vector (optional) */,
+                                        NULL /* initialization vector (optional) */,
-                                        [self bytes], dataLength, /* input */
+                                        [self bytes], dataLength, /* input */
-                                        buffer, bufferSize, /* output */
+                                        buffer, bufferSize, /* output */
-                                        &numBytesDecrypted);
+                                        &numBytesDecrypted);
-
+
-    if (cryptStatus == kCCSuccess) {
+    if (cryptStatus == kCCSuccess) {
-        //the returned NSData takes ownership of the buffer and will free it on deallocation
+        //the returned NSData takes ownership of the buffer and will free it on deallocation
-        return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
+        return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
-    }
+    }
-
+
-    free(buffer); //free the buffer;
+    free(buffer); //free the buffer;
-    return nil;
+    return nil;
 }
 
-NSString decryptedString = [[NSString alloc]initWithData:decryptedData];
+NSString decryptedString = [[NSString alloc]initWithData:decryptedData];
-
+
-    NSData *data = [NSData dataByBase64DecodingString:decryptedString];
+    NSData *data = [NSData dataByBase64DecodingString:decryptedString];
-
+
     decryptedString = [data dataUsingEncoding:NSUTF8StrinEncoding];