java加解密（java默认不支持PKCS7Padding）：
public class test {
// 加密
public static String Encrypt(String sSrc, String sKey) throws Exception {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
//"算法/模式/补码方式"、Cipher cipher = Cipher.getInstance("AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
char[] result= new Base64().encode(encrypted);
return new String(result);
}
// 解密
public static String Decrypt(String sSrc, String sKey) throws Exception {
try {
// 判断Key是否正确
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 = new Base64().decode(sSrc.toCharArray());
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original,"utf-8");
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
public static void main(String[] args) throws Exception {
/*
* 此处使用AES-128-ECB加密模式，key需要为16位。
*/
String cKey = "1234567890123456";
// 需要加密的字串
String cSrc = "有钱";
System.out.println(cSrc);
// 加密
String enString = Encrypt(cSrc, cKey);
System.out.println("加密后的字串是：" + enString);
// 解密
String DeString = Decrypt("xOgvmYILb7wr6Rov9h0vwOh3jNukN5Gnjcfvx91tm1gRe0KBZEDyzuNH9fX2rduvrSMO0b3Qb9yXyk/iSA5gaOFqSrytIHZqwxCaYinM6FGnOZtwpWqoPGOxGRS8sgwUphok9xALvByiUXel663TS+ogIv7lQrujhGqaGu0S8QeBEpNlxKj3jpjB975J2smp9j+9DUUfisj2tk5tlf63G9QdJphb6r8sJXBkf7kRFjw=", cKey);
System.out.println("解密后的字串是：" + DeString);
}
}
ios AES/ECB/PKCS5Padding 加解密：
-(NSString *)AES128Encrypt:(NSString *)plainText key:(NSString *)key
{
char keyPtr[kCCKeySizeAES128+1];
memset(keyPtr, 0, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
NSData* data = [plainText dataUsingEncoding:NSUTF8StringEncoding];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
unsigned char *buffer = malloc(bufferSize);
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding|kCCOptionECBMode,
keyPtr,
kCCBlockSizeAES128,
NULL,
[data bytes],
dataLength,
buffer,
bufferSize,
&numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
NSData *resultData = [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
return [NSString base64StringFromData:resultData length:[resultData length]];
}
free(buffer);
return @"";
}
-(NSString *)AES128Decrypt:(NSString *)encryptText key:(NSString *)key
{
char keyPtr[kCCKeySizeAES128 + 1];
memset(keyPtr, 0, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
//NSData *data = [GTMBase64 decodeData:[encryptText dataUsingEncoding:NSUTF8StringEncoding]];
NSData *data=[NSData base64DataFromString:encryptText];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
unsigned char *buffer = malloc(bufferSize);
size_t numBytesCrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding|kCCOptionECBMode,
keyPtr,
kCCBlockSizeAES128,
NULL,
[data bytes],
dataLength,
buffer,
bufferSize,
&numBytesCrypted);
if (cryptStatus == kCCSuccess) {
NSData *resultData = [NSData dataWithBytesNoCopy:buffer length:numBytesCrypted];
return [[NSString alloc] initWithData:resultData encoding:NSUTF8StringEncoding];
}
free(buffer);
return @"";
}
方法：base64DataFromString
#import "NSData+Base64.h"
@implementation NSData (Base64Additions)
+ (NSData *)base64DataFromString:(NSString *)string {
unsigned long ixtext, lentext;
unsigned char ch, inbuf[4], outbuf[3];
short i, ixinbuf;
Boolean flignore, flendtext = false;
const unsigned char *tempcstring;
NSMutableData *theData;
if (string == nil) {
return [NSData data];
}
ixtext = 0;
tempcstring = (const unsigned char *)[string UTF8String];
lentext = [string length];
theData = [NSMutableData dataWithCapacity: lentext];
ixinbuf = 0;
while (true) {
if (ixtext >= lentext) {
break;
}
ch = tempcstring [ixtext++];
flignore = false;
if ((ch >= 'A') && (ch <= 'Z')) {
ch = ch - 'A';
}
else if ((ch >= 'a') && (ch <= 'z')) {
ch = ch - 'a' + 26;
}
else if ((ch >= '0') && (ch <= '9')) {
ch = ch - '0' + 52;
}
else if (ch == '+') {
ch = 62;
}
else if (ch == '=') {
flendtext = true;
}
else if (ch == '/') {
ch = 63;
}
else {
flignore = true;
}
if (!flignore) {
short ctcharsinbuf = 3;
Boolean flbreak = false;
if (flendtext) {
if (ixinbuf == 0) {
break;
}
if ((ixinbuf == 1) || (ixinbuf == 2)) {
ctcharsinbuf = 1;
}
else {
ctcharsinbuf = 2;
}
ixinbuf = 3;
flbreak = true;
}
inbuf [ixinbuf++] = ch;
if (ixinbuf == 4) {
ixinbuf = 0;
outbuf[0] = (inbuf[0] << 2) | ((inbuf[1] & 0x30) >> 4);
outbuf[1] = ((inbuf[1] & 0x0F) << 4) | ((inbuf[2] & 0x3C) >> 2);
outbuf[2] = ((inbuf[2] & 0x03) << 6) | (inbuf[3] & 0x3F);
for (i = 0; i < ctcharsinbuf; i++) {
[theData appendBytes: &outbuf[i] length: 1];
}
}
if (flbreak) {
break;
}
}
}
return theData;
}
@end
方法：base64StringFromData
#import "NSString+Base64.h"
#import <UIKit/UIKit.h>
static char base64EncodingTable[64] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
};
@implementation NSString (Base64Additions)
+ (NSString *)base64StringFromData: (NSData *)data length: (NSUInteger)length {
unsigned long ixtext, lentext;
long ctremaining;
unsigned char input[3], output[4];
short i, charsonline = 0, ctcopy;
const unsigned char *raw;
NSMutableString *result;
lentext = [data length];
if (lentext < 1) {
return @"";
}
result = [NSMutableString stringWithCapacity: lentext];
raw = [data bytes];
ixtext = 0;
while (true) {
ctremaining = lentext - ixtext;
if (ctremaining <= 0) {
break;
}
for (i = 0; i < 3; i++) {
unsigned long ix = ixtext + i;
if (ix < lentext) {
input[i] = raw[ix];
}
else {
input[i] = 0;
}
}
output[0] = (input[0] & 0xFC) >> 2;
output[1] = ((input[0] & 0x03) << 4) | ((input[1] & 0xF0) >> 4);
output[2] = ((input[1] & 0x0F) << 2) | ((input[2] & 0xC0) >> 6);
output[3] = input[2] & 0x3F;
ctcopy = 4;
switch (ctremaining) {
case 1:
ctcopy = 2;
break;
case 2:
ctcopy = 3;
break;
}
for (i = 0; i < ctcopy; i++) {
[result appendString: [NSString stringWithFormat: @"%c", base64EncodingTable[output[i]]]];
}
for (i = ctcopy; i < 4; i++) {
[result appendString: @"="];
}
ixtext += 3;
charsonline += 4;
if ((length > 0) && (charsonline >= length)) {
charsonline = 0;
}
}
return result;
}
@end
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