firebase-ios-sdk/FirebaseAppCheck/Sources/Core/Utils/FIRAppCheckCryptoUtils.m

/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#import "FirebaseAppCheck/Sources/Core/Utils/FIRAppCheckCryptoUtils.h"

#import <CommonCrypto/CommonDigest.h>

@implementation FIRAppCheckCryptoUtils

+ (NSData *)sha256HashFromData:(NSData *)dataToHash {
  NSMutableData *digest = [[NSMutableData alloc] initWithLength:CC_SHA256_DIGEST_LENGTH];
  CC_SHA256(dataToHash.bytes, (CC_LONG)dataToHash.length, digest.mutableBytes);
  return [digest copy];
}

@end