sample code for block encrypt about react-native-rsa-native HOT 17 CLOSED

Hey @bestlbw
Can you please give us some more information?
What code are you running?
Android/iOS?

from react-native-rsa-native.

@amitaymolko ios ，i need to encrypt json string that greater than 117，will return ‘undefined’，so i
try to change the code realize the block cyphers ，would u give me a example ？ thanks！

from react-native-rsa-native.

can you send the code you are running?

from react-native-rsa-native.

the json String like this ：
{"systemId":"000001","reserve1":"","reserve2":"","transflag":1,"message":{"head"{"answerCode":"000000","trxnDate":1505905415917,"trxnFlag":1,"trxnSeq":0,"trxnCode":1003},"requestBody":{"securityUserId":"bjzxmr","pageStart":1,"numberOfPages":20,"custometype":"I","searchCondition":"I","searchValue":"111","searchType":"01"}}}

from react-native-rsa-native.

can you please send the full code that you are running so i can properly recreate the issue on my end?

from react-native-rsa-native.

oh no ，i think u don,t know my meaning , changing the code for solving ‘unknown block type’ error

from react-native-rsa-native.

In order for me to recreate your issue I need a copy of the code you are running to get the ‘unknown block type’ error.

I need this to understand the issue better and things like:
What functions are you calling in the library? In what order?

from react-native-rsa-native.

ok ，i know your meaning，
const params={"systemId":"000001","reserve1":"","reserve2":"","transflag":1,"requestBody":{"securityUserId":"bjzxmr","pageStart":1,"numberOfPages":20,"custometype":"I","searchCondition":"I","searchValue":"111","searchType":"01"}}} RSA.encrypt(params, pubKey)

from react-native-rsa-native.

RSA.encrypt takes a string param to encrypt.

try something like:
RSA.encrypt(JSON.stringify(params), pubKey)

from react-native-rsa-native.

i know , i just omitted， until return ‘undifined’

from react-native-rsa-native.

So please send me full code you are running, without omitting anything.
You are making it very difficult to evaluate this issue...

from react-native-rsa-native.

cry。。。
const params={"systemId":"000001","reserve1":"","reserve2":"","transflag":1,"requestBody":{"securityUserId":"bjzxmr","pageStart":1,"numberOfPages":20,"custometype":"I","searchCondition":"I","searchValue":"111","searchType":"01"}}} RSA.encrypt(JSON.stringify(params), pubKey) return ‘undifined’

from react-native-rsa-native.

ok I rewrote the encrypt decrypt for iOS to handle bigger blocks of data.
Please test with latest version 1.0.10

from react-native-rsa-native.

@amitaymolko thank you very much to solve my problem，i try to change the code but no effect，thanks

from react-native-rsa-native.

Maybe the problem is that you cannnot encrypt blocks larger then your key with RSA. I'm guessing you're using a 1024-bit RSA key and trying to encrypt data > 128 bytes. Instead, use AES to encrypt the block and use RSA to encrypt the random AES key. This is a limitation of RSA, not of this library. When I try 2048 bit RSA and a 256 byte block, it works fine on IOS.

running this on your PEM: openssl rsa -in test.pem -text -noout | grep bit

https://www.npmjs.com/package/react-native-aes

from react-native-rsa-native.

Worse: it looks like the code on ios is broken if the data has a null byte in it (which it can!).

from react-native-rsa-native.

Do this for large data:

aeskey = random(32)
iv = random(16)
encdata = encryptaescbc(data, aeskey, iv)
enckey = encryptrsa(aeskey, publickey)
result = iv+enckey+encdata

from react-native-rsa-native.