android、ios、php之间AES加密解密

使用原因：

因为在项目中，需要在与客户端(IOS,Android)交互的时候，保存一些私有信息，不被别人看到，所以，使用了比较流行的可以反向加解密的AES。

PHP 源码

<?php$aes = new aes;echo $aes->aes128cbcEncrypt("11122222");echo "\n";echo $aes->aes128cbcEncrypt("中文aes演示");echo "\n";class aes{    const KEY="625202f9149e061d";    const IV ="5efd3f6060e20330";    /**     * pkcs7补码     * @param string $string  明文     * @param int $blocksize Blocksize , 以 byte 为单位     * @return String     */     private function addPkcs7Padding($string, $blocksize = 32) {        $len = strlen($string); //取得字符串长度        $pad = $blocksize - ($len % $blocksize); //取得补码的长度        $string .= str_repeat(chr($pad), $pad); //用ASCII码为补码长度的字符， 补足最后一段        return $string;    }    /**     * 加密然后base64转码     *      * @param String 明文     * @param 加密的初始向量（IV的长度必须和Blocksize一样， 且加密和解密一定要用相同的IV）     * @param $key 密钥     */    function aes256cbcEncrypt($str, $iv, $key ) {           return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $this->addPkcs7Padding($str) , MCRYPT_MODE_CBC, $iv));    }    /**     * 除去pkcs7 padding     *      * @param String 解密后的结果     *      * @return String     */    private function stripPkcs7Padding($string){        $slast = ord(substr($string, -1));        $slastc = chr($slast);        $pcheck = substr($string, -$slast);        if(preg_match("/$slastc{".$slast."}/", $string)){            $string = substr($string, 0, strlen($string)-$slast);            return $string;        } else {            return false;        }    }    /**     * 解密     *      * @param String $encryptedText 二进制的密文      * @param String $iv 加密时候的IV     * @param String $key 密钥     * @return String     */    function aes256cbcDecrypt($encryptedText, $iv, $key) {        $encryptedText =base64_decode($encryptedText);        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encryptedText, MCRYPT_MODE_CBC, $iv));    }    function aes128cbcDecrypt($encryptedText, $iv=self::IV, $key=self::KEY) {        $encryptedText =base64_decode($encryptedText);        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encryptedText, MCRYPT_MODE_CBC, $iv));    }    function hexToStr($hex)//十六进制转字符串    {           $string="";         for($i=0;$i$hex)-1;$i+=2)        $string.=chr(hexdec($hex[$i].$hex[$i+1]));        return  $string;    }    function strToHex($string)//字符串转十六进制    {         $hex="";        $tmp="";        for($i=0;$i$string);$i++)        {            $tmp = dechex(ord($string[$i]));            $hex.= strlen($tmp) == 1 ? "0".$tmp : $tmp;        }        $hex=strtoupper($hex);        return $hex;    }    function aes128cbcHexDecrypt($encryptedText, $iv=self::IV, $key=self::KEY) {        $str = $this->hexToStr($encryptedText);        return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_CBC, $iv));    }    function aes128cbcEncrypt($str, $iv=self::IV, $key=self::KEY ) {    // $this->addPkcs7Padding($str,16)        $base = (mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,$this->addPkcs7Padding($str,16) , MCRYPT_MODE_CBC, $iv));        return $this->strToHex($base);    }}

运行结果

在线验证加解密结果

验证地址
http://www.seacha.com/tools/aes.html

android、ios、php之间AES加密解密_第1张图片

android、ios、php之间AES加密解密_第2张图片

IOS 源码

@implementation NSString (AES256)-(NSString *) aes256_encrypt:(NSString *)key{    const char *cstr = [self cStringUsingEncoding:NSUTF8StringEncoding];    NSData *data = [NSData dataWithBytes:cstr length:self.length];    //对数据进行加密    NSData *result = [data aes256_encrypt:key];    //转换为2进制字符串    if (result && result.length > 0) {        Byte *datas = (Byte*)[result bytes];        NSMutableString *output = [NSMutableString stringWithCapacity:result.length * 2];        for(int i = 0; i < result.length; i++){            [output appendFormat:@"%02x", datas[i]];        }        return output;    }    return nil;}-(NSString *) aes256_decrypt:(NSString *)key{    //转换为2进制Data    NSMutableData *data = [NSMutableData dataWithCapacity:self.length / 2];    unsigned char whole_byte;    char byte_chars[3] = {'\0','\0','\0'};    int i;    for (i=0; i < [self length] / 2; i++) {        byte_chars[0] = [self characterAtIndex:i*2];        byte_chars[1] = [self characterAtIndex:i*2+1];        whole_byte = strtol(byte_chars, NULL, 16);        [data appendBytes:&whole_byte length:1];    }    //对数据进行解密    NSData* result = [data aes256_decrypt:key];    if (result && result.length > 0) {        return [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding];    }    return nil;}@end@implementation NSData (AES256)- (NSData *)aes256_encrypt:(NSString *)key   //加密{    char keyPtr[kCCKeySizeAES256+1];    bzero(keyPtr, sizeof(keyPtr));    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];    NSUInteger dataLength = [self length];    size_t bufferSize = dataLength + kCCBlockSizeAES128;    void *buffer = malloc(bufferSize);    size_t numBytesEncrypted = 0;    CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128,                                          kCCOptionPKCS7Padding ,                                          keyPtr, kCCBlockSizeAES128,                                          [AES_IV UTF8String],                                          [self bytes], dataLength,                                          buffer, bufferSize,                                          &numBytesEncrypted);    if (cryptStatus == kCCSuccess) {        return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];    }    free(buffer);    return nil;}- (NSData *)aes256_decrypt:(NSString *)key   //解密{    char keyPtr[kCCKeySizeAES256+1];    bzero(keyPtr, sizeof(keyPtr));    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];    NSUInteger dataLength = [self length];    size_t bufferSize = dataLength + kCCBlockSizeAES128;    void *buffer = malloc(bufferSize);    size_t numBytesDecrypted = 0;    CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmAES128,                                          kCCOptionPKCS7Padding ,                                          keyPtr, kCCBlockSizeAES128,                                          [AES_IV UTF8String],                                          [self bytes], dataLength,                                          buffer, bufferSize,                                          &numBytesDecrypted);    if (cryptStatus == kCCSuccess) {        return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];    }    free(buffer);    return nil;}@end

Android

package com.example.aes;import java.io.UnsupportedEncodingException;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;/** * AES加密解密算法 */public class AesEncryptionUtil {/** 算法/模式/填充 **/private static final String CipherMode = "AES/CBC/PKCS5Padding";/** 创建密钥 **/private static SecretKeySpec createKey(String key) {byte[] data = null;if (key == null) {key = "";}StringBuffer sb = new StringBuffer(16);sb.append(key);while (sb.length() < 16) {sb.append("0");}if (sb.length() > 16) {sb.setLength(16);}try {data = sb.toString().getBytes("UTF-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}return new SecretKeySpec(data, "AES");}private static IvParameterSpec createIV(String password) {byte[] data = null;if (password == null) {password = "";}StringBuffer sb = new StringBuffer(16);sb.append(password);while (sb.length() < 16) {sb.append("0");}if (sb.length() > 16) {sb.setLength(16);}try {data = sb.toString().getBytes("UTF-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}return new IvParameterSpec(data);}/** 加密字节数据 **/public static byte[] encrypt(byte[] content, String password, String iv) {try {SecretKeySpec key = createKey(password);Cipher cipher = Cipher.getInstance(CipherMode);cipher.init(Cipher.ENCRYPT_MODE, key, createIV(iv));byte[] result = cipher.doFinal(content);return result;} catch (Exception e) {e.printStackTrace();}return null;}/** 加密(结果为16进制字符串) **/public static String encrypt(String content, String password, String iv) {byte[] data = null;try {data = content.getBytes("UTF-8");} catch (Exception e) {e.printStackTrace();}data = encrypt(data, password, iv);String result = byte2hex(data);return result;}/** 解密字节数组 **/public static byte[] decrypt(byte[] content, String password, String iv) {try {SecretKeySpec key = createKey(password);Cipher cipher = Cipher.getInstance(CipherMode);cipher.init(Cipher.DECRYPT_MODE, key, createIV(iv));byte[] result = cipher.doFinal(content);return result;} catch (Exception e) {e.printStackTrace();}return null;}/** 解密(输出结果为字符串) **/public static String decrypt(String content, String password, String iv) {byte[] data = null;try {data = hex2byte(content);} catch (Exception e) {e.printStackTrace();}data = decrypt(data, password, iv);if (data == null)return null;String result = null;try {result = new String(data, "UTF-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}return result;}/** 字节数组转成16进制字符串 **/public static String byte2hex(byte[] b) { // 一个字节的数，StringBuffer sb = new StringBuffer(b.length * 2);String tmp = "";for (int n = 0; n < b.length; n++) {// 整数转成十六进制表示tmp = (java.lang.Integer.toHexString(b[n] & 0XFF));if (tmp.length() == 1) {sb.append("0");}sb.append(tmp);}return sb.toString().toUpperCase(); // 转成大写}/** 将hex字符串转换成字节数组 **/private static byte[] hex2byte(String inputString) {if (inputString == null || inputString.length() < 2) {return new byte[0];}inputString = inputString.toLowerCase();int l = inputString.length() / 2;byte[] result = new byte[l];for (int i = 0; i < l; ++i) {String tmp = inputString.substring(2 * i, 2 * i + 2);result[i] = (byte) (Integer.parseInt(tmp, 16) & 0xFF);}return result;}}

使用原因：

PHP 源码

运行结果

在线验证加解密结果

IOS 源码

Android

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