¡@

Home 

2014/10/15 ¤U¤È 10:05:06

iphone Programming Glossary: cipher

How to implement Blowfish algorithm in iOS

http://stackoverflow.com/questions/13507384/how-to-implement-blowfish-algorithm-in-ios

mutableCopy emptyData.length 8 dataToEncrypt length 8 dataToEncrypt appendData emptyData Here we have data ready to encipher BLOWFISH_CTX ctx Blowfish_Init ctx unsigned char secretKey bytes secretKey length NSRange aLeftRange aRightRange NSData.. unsigned long aLeftBox getBytes dl length sizeof unsigned long aRightBox getBytes dr length sizeof unsigned long Encipher Blowfish_Encrypt ctx dl dr Put bytes back dataToEncrypt replaceBytesInRange aLeftRange withBytes dl dataToEncrypt replaceBytesInRange.. Blowfish_Encrypt you need to call Blowfish_Decrypt . Here is a source code for that I assume that you just decrypt the cipher text but don't deal with padding here NSData blowfishDecrypt NSData messageData usingKey NSData secretKeyData NSMutableData..

AES Encryption for an NSString on the iPhone

http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone

key @ my password NSString secret @ text to encrypt NSData plain secret dataUsingEncoding NSUTF8StringEncoding NSData cipher plain AES256EncryptWithKey key printf s n cipher description UTF8String plain cipher AES256DecryptWithKey key printf s n.. NSData plain secret dataUsingEncoding NSUTF8StringEncoding NSData cipher plain AES256EncryptWithKey key printf s n cipher description UTF8String plain cipher AES256DecryptWithKey key printf s n plain description UTF8String printf s n NSString.. NSUTF8StringEncoding NSData cipher plain AES256EncryptWithKey key printf s n cipher description UTF8String plain cipher AES256DecryptWithKey key printf s n plain description UTF8String printf s n NSString alloc initWithData plain encoding NSUTF8StringEncoding..

How can I make my AES encryption identical between Java and Objective-C (iPhone)?

http://stackoverflow.com/questions/2280375/how-can-i-make-my-aes-encryption-identical-between-java-and-objective-c-iphone

keyPtr maxLength sizeof keyPtr encoding NSUTF8StringEncoding NSUInteger dataLength self length See the doc For block ciphers the output size will always be less than or equal to the input size plus the size of one block. That's why we need to add.. byte keyBytes key.getBytes SecretKeySpec keySpec new SecretKeySpec keyBytes AES try Cipher cipher Cipher.getInstance AES ECB PKCS7Padding BC cipher.init Cipher.ENCRYPT_MODE keySpec encrypted new byte cipher.getOutputSize.. SecretKeySpec keySpec new SecretKeySpec keyBytes AES try Cipher cipher Cipher.getInstance AES ECB PKCS7Padding BC cipher.init Cipher.ENCRYPT_MODE keySpec encrypted new byte cipher.getOutputSize data.length int ctLength cipher.update data 0 data.length..

iPHone - AES 256 encryption without padding

http://stackoverflow.com/questions/4540725/iphone-aes-256-encryption-without-padding

app so that encryption decryption happens successfully iphone security aes share improve this question Block ciphers will always be a multiple of their block size. When data does not fit exactly into the cipher stream it is padded. So there's..

Need to apply for CCATS if using simple XOR cipher?

http://stackoverflow.com/questions/4882502/need-to-apply-for-ccats-if-using-simple-xor-cipher

to apply for CCATS if using simple XOR cipher iTunesConnect states that developers need to get a CCATS Classification if using encryption in the app. My app uses a simple.. developers need to get a CCATS Classification if using encryption in the app. My app uses a simple XOR obfuscation cipher when transferring data over HTTP. Does this still fall under that requirement If not then what type of encryption need to..

Implementing and Testing iOS data protection

http://stackoverflow.com/questions/5155789/implementing-and-testing-ios-data-protection

protection seems to be not good enough.. any link or tutorial that guide me through the best db protection found sql cipher but is kinda heavy to add in a evoluted project Thanks iphone objective c security ios data protection share improve..

iOS - Creating SecKeyRef from exponent+modulus

http://stackoverflow.com/questions/5942712/ios-creating-seckeyref-from-exponentmodulus

myPublicExponent KeyFactory fact KeyFactory.getInstance RSA Key pubKey fact.generatePublic keySpec 2 cypher Cipher cipher Cipher.getInstance RSA ECB PKCS1Padding cipher.init Cipher.DECRYPT_MODE keySpec 3 use cypher to decode my block to an output.. RSA Key pubKey fact.generatePublic keySpec 2 cypher Cipher cipher Cipher.getInstance RSA ECB PKCS1Padding cipher.init Cipher.DECRYPT_MODE keySpec 3 use cypher to decode my block to an output stream But with the iPhone security API I..