前言
移动端越来越火了，我们在开发过程中，总会碰到要和移动端打交道的场景，比如android和ios的打交道。为了让数据交互更安全，我们需要对数据进行加密传输。
这篇文章给大家分享aes的加密和解密、android和ios通用的aes加密算法、大家可以直接集成到自己的项目、服务器接口如果是用java写的话、整个框架都完美了、如果是.net编写的后台接口的话、得改造一下哦
ios加密
/*加密方法*/
(nsstring *)aes256encryptwithplaintext:(nsstring *)plain {
nsdata *plaintext = [plain datausingencoding:nsutf8stringencoding];
// ´key´ should be 32 bytes for aes256, will be null-padded otherwise
char keyptr[kcckeysizeaes256 1]; // room for terminator (unused)
bzero(keyptr, sizeof(keyptr)); // fill with zeroes (for padding)
nsuinteger datalength = [plaintext length];
size_t buffersize = datalength kccblocksizeaes128;
void *buffer = malloc(buffersize);
bzero(buffer, sizeof(buffer));
size_t numbytesencrypted = 0;
cccryptorstatus cryptstatus = cccrypt(kccencrypt, kccalgorithmaes128,kccoptionpkcs7padding,
[[nsdata aeskeyforpassword:password] bytes], kcckeysizeaes256,
ivbuff /* initialization vector (optional) */,
[plaintext bytes], datalength, /* input */
buffer, buffersize, /* output */
&numbytesencrypted);
if (cryptstatus == kccsuccess) {
nsdata *encryptdata = [nsdata datawithbytesnocopy:buffer length:numbytesencrypted];
return [encryptdata base64encoding];
}
free(buffer); //free the buffer;
return nil;
}
ios解密
/*解密方法*/
(nsstring *)aes256decryptwithciphertext:(nsstring *)ciphertexts{
nsdata *cipherdata = [nsdata datawithbase64encodedstring:ciphertexts];
// ´key´ should be 32 bytes for aes256, will be null-padded otherwise
char keyptr[kcckeysizeaes256 1]; // room for terminator (unused)
bzero(keyptr, sizeof(keyptr)); // fill with zeroes (for padding)
nsuinteger datalength = [cipherdata length];
size_t buffersize = datalength kccblocksizeaes128;
void *buffer = malloc(buffersize);
size_t numbytesdecrypted = 0;
cccryptorstatus cryptstatus = cccrypt(kccdecrypt, kccalgorithmaes128, kccoptionpkcs7padding,
[[nsdata aeskeyforpassword:password] bytes], kcckeysizeaes256,
ivbuff ,/* initialization vector (optional) */
[cipherdata bytes], datalength, /* input */
buffer, buffersize, /* output */
&numbytesdecrypted);
if (cryptstatus == kccsuccess) {
nsdata *encryptdata = [nsdata datawithbytesnocopy:buffer length:numbytesdecrypted];
return [[[nsstring alloc] initwithdata:encryptdata encoding:nsutf8stringencoding] init];
}
free(buffer); //free the buffer;
return nil;
}
android加密
private byte[] encrypt(string cmp, secretkey sk, ivparameterspec iv,
byte[] msg) {
try {
cipher c = cipher.getinstance(cmp);
c.init(cipher.encrypt_mode, sk, iv);
return c.dofinal(msg);
} catch (nosuchalgorithmexception nsae) {
log.e("aesdemo", "no cipher getinstance support for " cmp);
} catch (nosuchpaddingexception nspe) {
log.e("aesdemo", "no cipher getinstance support for padding " cmp);
} catch (invalidkeyexception e) {
log.e("aesdemo", "invalid key exception");
} catch (invalidalgorithmparameterexception e) {
log.e("aesdemo", "invalid algorithm parameter exception");
} catch (illegalblocksizeexception e) {
log.e("aesdemo", "illegal block size exception");
} catch (badpaddingexception e) {
log.e("aesdemo", "bad padding exception");
}
return null;
}
android解密
private byte[] decrypt(string cmp, secretkey sk, ivparameterspec iv,
byte[] ciphertext) {
try {
cipher c = cipher.getinstance(cmp);
c.init(cipher.decrypt_mode, sk, iv);
return c.dofinal(ciphertext);
} catch (nosuchalgorithmexception nsae) {
log.e("aesdemo", "no cipher getinstance support for " cmp);
} catch (nosuchpaddingexception nspe) {
log.e("aesdemo", "no cipher getinstance support for padding " cmp);
} catch (invalidkeyexception e) {
log.e("aesdemo", "invalid key exception");
} catch (invalidalgorithmparameterexception e) {
log.e("aesdemo", "invalid algorithm parameter exception");
} catch (illegalblocksizeexception e) {
log.e("aesdemo", "illegal block size exception");
} catch (badpaddingexception e) {
log.e("aesdemo", "bad padding exception");
e.printstacktrace();
}
return null;
}
总结
以上就是这篇文章的全部内容了，希望本文的内容对各位开发者们能有所帮助，如果有疑问大家可以留言交流。
更多android、ios和java通用的aes128加密解密示例代码。