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Questions tagged [commoncrypto]

Apple's cryptography framework. Contains functions for generating commonly-used hashes and cryptographic functions.

209 questions
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Interoperability of AES CTR mode?

I use AES128 crypto in CTR mode for encryption, implemented for different clients (Android/Java and iOS/ObjC). The 16 byte IV used when encrypting a packet is formated like this: <11 byte nonce> | <4 byte packet counter> | 0 The packet counter…
Markus R
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AES-256 encryption on iOS not producing same result as openssl

I have been looking and looking at this for hours. I am desperately trying to get iOS to encrypt a short piece of text using AES-256 encryption that can then be decrypted by openssl. Straight forward? Nope. The code I've found for iOS is not…
padajo
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kSecRandomDefault not found?

I am using CommonCrypto for encryption on Mac OS 10.7. Isn't this framework built in? When I am generating random data: + (NSData *)randomDataOfLength:(size_t)length { NSMutableData *data = [NSMutableData dataWithLength:length]; int result =…
user762034
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PyCrypto compatibility with CommonCrypto in CFB mode?

I'm trying to get somepython code to decrypt data that was encrypted using the OS X CommonCrypto APIs. There is little to no documentation on the exact options that CommonCrypto uses, so I'm needing some help figuring out what options to set in…
Loki
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Anyone else having trouble with iOS 5 encryption?

Have a (rather complex) app that works fine on iOS 4 but fails on iOS 5 with a decryption problem. It's decrypting a SQLite DB page, and the last 16 bytes do not appear to be properly decrypted. Does this ring a bell with anyone? Update I've…
Hot Licks
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Does CommonCrypto reliably know when my key is invalid when I decrypt a ciphertext?

When I try to decrypt a cipher text using the wrong key, CCCrypt returns kCCDecodeError. Question is, does it do so reliably (eg. am I guaranteed that if it returns success, my input key was the key used to encrypt the plain text, and am I also…
lhunath
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Swift 5 + kCCDecrypt (CommonCrypto): Failing to decrypt

Trying to write my own encrypt/decrypt functions in Swift 5, based on tons of other similar questions -- and failing miserably. I'm using CommonCrypto + CCCrypt to encrypt/decrypt (AES, 256 key, random iv). I'm favouring NSData.bytes over…
backslash-f
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Getting error "Include of non-modular header inside framework module"

I have a private pod written on top of CommonCrypto which explicitly relies on CommonCrypto. Headers have types declared by CommonCrypto like: #include typedef CC_SHA256_CTX qwer_digest_evp; Since CC_SHA256_CTX is…
Ayush Goel
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AES128 CTR encryption with iv

I want to implement AES128 CTR with iv and key. I'm looking for any advice how to do that in best way and not reinvent wheel. I found good lib for this RNCryptor, but looks like this aes is not supported there. Also I test this approach, but looks…
hbk
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CommonCrypto XCode 9.0 unable to create key from data

The following code fails with OSStatus -50 (secParam) both in my manual code and in other libraries (SwiftyRSA, Heimdall) on XCode 9.0, ios 10+. Any ideas as to why or any way to obtain more info? let keyDict: [CFString: Any] = [ …
RedPoppy
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Swift 3 import CommonCrypto

How to import the Obj-C CommonCrypto library to an existing Swift Xcode Project (Swift 3, Xcode 8.3.3)? I tried to create my own Objective-C bridging file and it wasn't working.
Alec
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Swift AES encryption using CommonCrypto

I am working on an iOS app on XCode 7.1 with Swift 2.1 and I am trying to do simple encryption with AES 128 bit and PKCS7 padding using CommonCrypto library. The code works but every time I try to cast the NSData object to NSString then to String I…
Waxren
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implementing AES256 encryption into IOS

This is my java code. Now I want to implement same functionality in Objective-C. Cipher encryptCipher; IvParameterSpec iv = new IvParameterSpec(key); SecretKeySpec skeySpec = new SecretKeySpec(key, "AES"); encryptCipher =…
Askarc Ali
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iOS Core Data encryption using NSValueTransformer

I'm experimenting with encrypting data with Core Data and CommonCrypto. I am trying to use a NSValueTransformer to lazily encrypt and decrypt. However when I'm now trying save the encrypted data to the persistent store coordinator, it fails. Every…
Orion
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Is there a way to use Common Crypto in a Swift playground?

I am toying with a REST API in an Xcode playground and I need to hash something with SHA1. All the solutions I have found depend on Common Crypto, and that doesn’t seem to be directly available in a Swift playground. Is there a way to SHA1 something…
zoul
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