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; } }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

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