AES加密ECB模式PKCS5Padding模式的实现
具体代码如下：
//字符串加密(16进制)
+ (NSString*)encyptPKCS5:(NSString*)plainText WithKey:(NSString*)key{
//把string转NSData
NSData* data = [plainText dataUsingEncoding:NSUTF8StringEncoding];
//length
size_tplainTextBufferSize = [data length];
constvoid*vplainText = (constvoid*)[databytes];
uint8_t*bufferPtr =NULL;
size_tbufferPtrSize =0;
size_tmovedBytes =0;
bufferPtrSize = (plainTextBufferSize +kCCBlockSizeAES128) & ~(kCCBlockSizeAES128-1);
bufferPtr =malloc( bufferPtrSize *sizeof(uint8_t));
memset((void*)bufferPtr,0x0, bufferPtrSize);
constvoid*vkey = (constvoid*) [keyUTF8String];
//配置CCCrypt
CCCryptorStatusccStatus =CCCrypt(kCCEncrypt,
kCCAlgorithmAES128,//3DES
kCCOptionECBMode|kCCOptionPKCS7Padding,//设置模式
vkey,//key
kCCKeySizeAES128,
nil,//偏移量，这里不用，设置为nil;不用的话，必须为nil,不可以为@“”
vplainText,
plainTextBufferSize,
(void*)bufferPtr,
bufferPtrSize,
&movedBytes);
if(ccStatus ==kCCSuccess) {
NSData*myData = [NSDatadataWithBytes:(constchar*)bufferPtr length:(NSUInteger)movedBytes];
NSUInteger len = [myData length];
char*chars = (char*)[myDatabytes];
NSMutableString*hexString = [[NSMutableString alloc]init];
for(NSUInteger i =0; i < len; i++ )
[hexString appendString:[NSString stringWithFormat:@"%0.2hhx", chars[i]]];
//16进制
return hexString;
}
free(bufferPtr);
return nil;
}
