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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of CommonCrypto
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Community Discussions
Trending Discussions on CommonCrypto
QUESTION
Currently using Apple CommonCrypto, to make some encryptions. We have web application that use cryptography to keep zero knowledge principle, now we want to move this approach to iOS application. I read about ASN.1, when try to parse using tool that is there I receive error - not valid characters, but to be able to decrypt I need to remove some extra symbols. So to decrypt password, I need to pass several steps, one of it - to get salt, that is encrypted inside private key. private key looks like this:
...ANSWER
Answered 2022-Feb-10 at 16:39You need to decrypt -----BEGIN ENCRYPTED PRIVATE KEY-----
In openssl that would be
openssl rsa -in enc.key -out dec.key
if you are using rsa you would been to provide the passphrase for the encrypted key:
In you case:
- Base64 decode the private key
- decrypt the private key using the passphrase
- base64 the result (or use it as the source for your ASN.1 decode
QUESTION
Trying to install openssl on homebrew using:
...ANSWER
Answered 2021-Sep-03 at 15:29Seems a bug of openssl itself. https://github.com/openssl/openssl/issues/16487
~~What about export SDKROOT="/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk "
?~~
Homebrew pre-build packages for some versions of macOS. But it keep dropping this pre-building support for old macOS. On macOS 10.12, you're building openssl
from the source code and Xcode command line tool is needed.
QUESTION
I am trying to use the library in c++ on a mac to encode a string with a key in sha512. I already have a function that will encode a string into sha512, I just don't know how to do it with a key. This is the function I created where I tried to implement the key using the CommonHMAC library (it fails to do so properly obviously). I have found no documentation on how to do this in c++, if anyone knows please help.
ANSWER
Answered 2021-Dec-21 at 13:27Don't do heap allocation for the result and you must convert bytes to human-readable hexadecimal string.
QUESTION
We need to include SQLCipher in our KMM project without using Cocoapods. This involves building a libSQLCipher.a. I was able to this in terminal with these commands:
...ANSWER
Answered 2021-Nov-25 at 07:55Kotlin/Native's cinterop
tool should have all compiler options specified explicitly to "see" the header the same way as your compiler did when building the library. To specify the compiler options, please use the DSL as described in the documentation.
In general, something like that should work:
QUESTION
I am building an IOS app and it communicates with the JS. So the communication between the two ends must be encrypted. So my main intention is to encrypt from Javascript side and send it to the IOS app mobile end, and the mobile app should decrypt the data. This is how I have done on Javascript side and it works fine as expected,
...ANSWER
Answered 2021-Oct-19 at 08:12Ok I found the issue. Before converting it to a UInt8 Array you need to convert it to a data object and then convert it to UInt8 array for feeding. So the code in swift should look like this,
QUESTION
Trying to perform encryption and decryption using AES ( common crypto ) in swift, For some reason while decrypting the first 16 characters are getting trimmed off. Can anyone please look at the below playground code and suggest what could be going wrong here ?. The decodedString variable trims off the intial 16 characters of the original payloadString during decryption.
playground code
...ANSWER
Answered 2021-Feb-01 at 11:52Seems you have picked up two different kinds of encrypt and decrypt.
Do you see your decrypt
does not have a parameter iv
which is needed for AES decryption?
Your decrypt
expects first 16 bytes of data
as iv
and the rest as encrypted data. But your encrypt
returns only encrypted data.
Please try changing the line calling decrypt
as follows:
QUESTION
I've retrieved the set of certificates in my keychain using this code:
...ANSWER
Answered 2021-Jan-21 at 09:04You can achieve it by performing the hash yourself. The fingerprints are not part of the certificate itself. More info about that over here.
QUESTION
I want to verify some downloaded data is unmodified. My expectation is that if I modify the original data, the signature would fail. While this is true in some cases (data2
) it's surprisingly not working in others (data3
). Using hashes/Digest
returns the same results.
ANSWER
Answered 2021-Jan-04 at 16:54OK I found the problem. Your code is 100% correct. The problem is caused by some rather problematic bug in Swift - I think. Smarter Swift experts - please correct and enlighten me!
By the way: I'm using Xcode Version 12.2 beta 3 (12B5035g)
QUESTION
I have a file that has been encrypted on Android using this code:
...ANSWER
Answered 2020-Nov-12 at 09:51Okay, I think I figured the problem. Obviously, there is a problem with NSData.bytes and one should work withUnsafeBytes. Furthermore, my issue may was that the IV was not part of the data, as many examples assumed, so I missed 16 bytes when decrypting. The following code works for me, hope it will help someone!
QUESTION
I cannot understand how to build Botan for android, according on the instruction here:
$ export CXX=/opt/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android28-clang++
$ ./configure.py --os=android --cc=clang --cpu=arm64
i cannot understand how to use this commands on Windows, also reading previous issues did not help me, can you tell me how did you build this library on windows step-by-step, just your command examples?
I used --cc-bin option of configure.py to specify the path to the compiler, it is considered a solution for windows, but what i have is:
...ANSWER
Answered 2020-Mar-21 at 22:13It seems Botan support for building Android binaries on Windows hosts is limited. You will have to use dark magic to make this work.
The build process consists of two phases, the configuration phase and the make phase.
The Android-specific instructions in the documentation you linked do not cover the whole build process, only the configuration phase. For the make phase, you then have to follow the Windows-specific instructions (link).
Configuration phase:You will need the following binaries, adjust the paths to your machine:
clang++ (note the
.cmd
at the end):C:\Development\android-ndk-r19c-windows-x86_64\android-ndk-r19c\toolchains\llvm\prebuilt\windows-x86_64\bin\armv7a-linux-androideabi28-clang++.cmd
ar:
C:\Development\android-ndk-r19c-windows-x86_64\android-ndk-r19c\toolchains\llvm\prebuilt\windows-x86_64\bin\arm-linux-androideabi-ar.exe
In the Botan folder, run the configure
command:
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