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c++cmacosopensslsha256

Alternative for calculating sha256 to using deprecated openssl code

The SHA256_XXX family declared in /usr/include/openssl/sha.h has been deprecated in OS-X 10.7 and above. 

int SHA256_Init(SHA256_CTX *c) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER;
int SHA256_Update(SHA256_CTX *c, const void *data, size_t len) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER;
int SHA256_Final(unsigned char *md, SHA256_CTX *c) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER;
unsigned char *SHA256(const unsigned char *d, size_t n,unsigned char *md) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER;
void SHA256_Transform(SHA256_CTX *c, const unsigned char *data) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER;

Although it's currently working, I wonder what is the alternative for later OS X versions.

Solution

  • Common Crypto supports SHA256 and other cryptographic methods and is available for OS X and iOS. Add Security.framework and include <CommonCrypto/CommonDigest.h>. Common Crypto is a "C" API.