SecKeyRef SOSPeerInfoCopyPubKey(SOSPeerInfoRef peer) {
CFDataRef pubKeyBytes = CFDictionaryGetValue(peer->description, sPublicKeyKey);
if (pubKeyBytes == NULL)
return NULL;
CFAllocatorRef allocator = CFGetAllocator(peer);
SecKeyRef pubKey = SecKeyCreateFromPublicData(allocator, kSecECDSAAlgorithmID, pubKeyBytes);
return pubKey;
}
SecKeyRef SecKeyCreatePublicFromPrivate(SecKeyRef privateKey) {
CFDataRef serializedPublic = NULL;
SecKeyRef result = NULL;
require_noerr_quiet(SecKeyCopyPublicBytes(privateKey, &serializedPublic), fail);
require_quiet(serializedPublic, fail);
result = SecKeyCreateFromPublicData(kCFAllocatorDefault, SecKeyGetAlgorithmID(privateKey), serializedPublic);
fail:
CFReleaseSafe(serializedPublic);
return result;
}