前言
移動端越來越火了，我們在開發過程中，總會碰到要和移動端打交道的場景，比如android和iOS的打交道。為了讓數據交互更安全，我們需要對數據進行加密傳輸。
這篇文章給大家分享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項目、服務器接口如果是用Java寫的話、整個框架都完美了、如果是.NET編寫的后臺接口的話、得改造一下哦
IOS加密
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/*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
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/*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
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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
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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;} |
總結
以上就是這篇文章的全部內容了，希望本文的內容對各位開發者們能有所幫助，如果有疑問大家可以留言交流。
