PHP,Android,IOS通信之 AES128加解密案例程序android上调用代码：
mcrypt = new MCrypt();/* 加密*/String encrypted = MCrypt.bytesToHex( mcrypt.encrypt("需加密的字符") );/* 解密*/String decrypted = new String( mcrypt.decrypt( encrypted ) );PHP上调用的代码：$mcrypt = new MCrypt();#Encrypt$encrypted = $mcrypt->encrypt("需加密的字符");#Decrypt$decrypted = $mcrypt->decrypt($encrypted);IOS上调用的代码：#import "Tool.h"// 加解密字符串NSString *string1 = @"fengzihua";NSString *encString = [Tool crypt:string1];NSLog(@"%@",encString); NSString *rawString = [Tool decrypt:encString];NSLog(@"%@",rawString); android实现加解密的代码：/***********//**JAVA**/import java.security.NoSuchAlgorithmException;import javax.crypto.Cipher;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;public class MCrypt {private String iv = "fedcba9876543210";//虚拟的 iv (需更改) private IvParameterSpec ivspec; private SecretKeySpec keyspec; private Cipher cipher; private String SecretKey = "0123456789abcdef";//虚拟的 密钥 (需更改） public MCrypt() { ivspec = new IvParameterSpec(iv.getBytes()); keyspec = new SecretKeySpec(SecretKey.getBytes(), "AES"); try { cipher = Cipher.getInstance("AES/CBC/NoPadding"); } catch (NoSuchAlgorithmException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchPaddingException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public byte[] encrypt(String text) throws Exception { if(text == null || text.length() == 0) throw new Exception("Empty string"); byte[] encrypted = null; try { cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec); encrypted = cipher.doFinal(padString(text).getBytes()); } catch (Exception e) { throw new Exception("[encrypt] " + e.getMessage()); } return encrypted; } public byte[] decrypt(String code) throws Exception { if(code == null || code.length() == 0) throw new Exception("Empty string"); byte[] decrypted = null; try { cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec); decrypted = cipher.doFinal(hexToBytes(code)); } catch (Exception e) { throw new Exception("[decrypt] " + e.getMessage()); } return decrypted; } public static String bytesToHex(byte[] data) { if (data==null) { return null; } int len = data.length; String str = ""; for (int i=0; ihex2bin($key); $iv = $this->iv; $td = mcrypt_module_open('rijndael-128', '', 'cbc', $iv); mcrypt_generic_init($td, $this->key, $iv); $encrypted = mcrypt_generic($td, $str); mcrypt_generic_deinit($td); mcrypt_module_close($td); return bin2hex($encrypted); } function decrypt($code) { //$key = $this->hex2bin($key); $code = $this->hex2bin($code); $iv = $this->iv; $td = mcrypt_module_open('rijndael-128', '', 'cbc', $iv); mcrypt_generic_init($td, $this->key, $iv); $decrypted = mdecrypt_generic($td, $code); mcrypt_generic_deinit($td); mcrypt_module_close($td); return utf8_encode(trim($decrypted)); } protected function hex2bin($hexdata) { $bindata = ''; for ($i = 0; $i < strlen($hexdata); $i += 2) { $bindata .= chr(hexdec(substr($hexdata, $i, 2))); } return $bindata; } }
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IOS实现加解密的代码：/**********//**Tool.h**/#import#import "CommonCrypto/CommonCrypto.h"
@interface Tool : NSObject
+ (NSString*) crypt:(NSString*)recource;
+ (NSString*) decrypt:(NSString*)recource;
@end
/**Tool.m**/
#import "Tool.h"
#define kCryptingKey @"0123456789abcdef" /// 同上
#define kCryptingIv @"fedcba9876543210" /// 同上
@implementation Tool
+ (NSString*) crypt:(NSString*)recource
{
NSData *data = [recource dataUsingEncoding:NSUTF8StringEncoding];
NSData *encrypt = [self AES128EncryptWithKey:kCryptingKey withData:data iv:kCryptingIv];
return [self stringWithHexBytes:encrypt];
}
+ (NSString*) decryptData:(NSData*)recource
{
NSData *decrypt = [self AES128DecryptWithKey:kCryptingKey withData:recource iv:kCryptingIv];
return [[NSString alloc] initWithData:decrypt encoding:NSUTF8StringEncoding];
}
+ (NSString*) decrypt:(NSString*)recource
{
NSData* data=[self decodeFromHexidecimal:recource];
NSData *decrypt = [self AES128DecryptWithKey:kCryptingKey withData:data iv:kCryptingIv];
return [[NSString alloc] initWithData:decrypt encoding:NSUTF8StringEncoding];
}
+ (NSData *) decodeFromHexidecimal:(NSString*)str
{
NSString *command = [NSString stringWithString:str];
command = [command stringByReplacingOccurrencesOfString:@" " withString:@""];
NSMutableData *commandToSend = [[NSMutableData data] init];
unsigned char whole_byte;
char byte_chars[3] = {'\0','\0','\0'};
int i;
for (i=0; i < [command length]/2; i++) {
byte_chars[0] = [command characterAtIndex:i*2];
byte_chars[1] = [command characterAtIndex:i*2+1];
whole_byte = strtol(byte_chars, NULL, 16);
[commandToSend appendBytes:&whole_byte length:1];
}
return commandToSend;
}
+ (NSData *)AES128EncryptWithKey:(NSString *)key withData:(NSData*)_data iv:(NSString *) iv
{
char keyPtr[kCCKeySizeAES128 + 1];
memset(keyPtr, 0, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof( keyPtr ) encoding:NSUTF8StringEncoding];
char ivPtr[kCCBlockSizeAES128 + 1];
memset(ivPtr, 0, sizeof(ivPtr));
[iv getCString:ivPtr maxLength:sizeof(ivPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [_data length];
int diff = kCCKeySizeAES128 - (dataLength % kCCKeySizeAES128);
unsigned long int newSize = 0;
if(diff > 0)
{
newSize = dataLength + diff;
}
char dataPtr[newSize];
memcpy(dataPtr, [_data bytes], [_data length]);
for(int i = 0; i < diff; i++)
{
dataPtr[i + dataLength] = 0x00;
}
size_t bufferSize = newSize + kCCBlockSizeAES128;
void *buffer = malloc( bufferSize );
memset(buffer, 0, bufferSize);
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt( kCCEncrypt, kCCAlgorithmAES128, 0x0000,
keyPtr, kCCKeySizeAES128,
ivPtr,
dataPtr,
sizeof(dataPtr),
buffer, bufferSize, /* output */
&numBytesEncrypted );
if( cryptStatus == kCCSuccess )
{
//the returned NSData takes ownership of the buffer and will free it on deallocation
return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}
free( buffer ); //free the buffer
return nil;
}
+ (NSData *)AES128DecryptWithKey:(NSString *)key withData:(NSData*)data iv:(NSString *) iv
{
char keyPtr[kCCKeySizeAES128 + 1];
memset(keyPtr, 0, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
char ivPtr[kCCBlockSizeAES128 + 1];
memset(ivPtr, 0, sizeof(ivPtr));
[iv getCString:ivPtr maxLength:sizeof(ivPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesDecrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmAES128, 0x0000,
keyPtr, kCCBlockSizeAES128,
ivPtr,
[data bytes],
dataLength,
buffer, bufferSize, /* output */
&numBytesDecrypted);
if (cryptStatus == kCCSuccess) {
//the returned NSData takes ownership of the buffer and will free it on deallocation
return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
}
free(buffer); //free the buffer;
return nil;
}
+ (NSString*) stringWithHexBytes:(NSData*)_data {
NSMutableString *stringBuffer = [NSMutableString stringWithCapacity:([_data length] * 2)];
const unsigned char *dataBuffer = [_data bytes];
int i;
for (i = 0; i < [_data length]; ++i) {
[stringBuffer appendFormat:@"%02lX", (unsigned long)dataBuffer[i]];
}
return [stringBuffer copy];
}
@end
