#include <stdio.h>
#include "utilities/SecCFRelease.h"
#include "utilities/der_plist.h"
#include "utilities/der_plist_internal.h"
#include <corecrypto/ccder.h>
#include <CoreFoundation/CoreFoundation.h>
const uint8_t* der_decode_data(CFAllocatorRef allocator,
CFDataRef* data, CFErrorRef *error,
const uint8_t* der, const uint8_t *der_end)
{
if (NULL == der) {
SecCFDERCreateError(kSecDERErrorNullInput, CFSTR("null input"), NULL, error);
return NULL;
}
size_t payload_size = 0;
const uint8_t *payload = ccder_decode_tl(CCDER_OCTET_STRING, &payload_size, der, der_end);
if (NULL == payload || (ssize_t) (der_end - payload) < (ssize_t) payload_size) {
SecCFDERCreateError(kSecDERErrorUnknownEncoding, CFSTR("Unknown data encoding"), NULL, error);
return NULL;
}
*data = CFDataCreate(allocator, payload, payload_size);
if (NULL == *data) {
SecCFDERCreateError(kSecDERErrorAllocationFailure, CFSTR("Failed to create data"), NULL, error);
return NULL;
}
return payload + payload_size;
}
size_t der_sizeof_data(CFDataRef data, CFErrorRef *error)
{
return ccder_sizeof_raw_octet_string(CFDataGetLength(data));
}
uint8_t* der_encode_data(CFDataRef data, CFErrorRef *error,
const uint8_t *der, uint8_t *der_end)
{
const CFIndex data_length = CFDataGetLength(data);
return SecCCDEREncodeHandleResult(ccder_encode_tl(CCDER_OCTET_STRING, data_length, der,
ccder_encode_body(data_length, CFDataGetBytePtr(data), der, der_end)),
error);
}