mirror of
https://github.com/kidfromjupiter/nearby.git
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61 lines
1.9 KiB
Objective-C
61 lines
1.9 KiB
Objective-C
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "internal/platform/implementation/apple/GNCUtils.h"
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#import <CommonCrypto/CommonDigest.h>
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NS_ASSUME_NONNULL_BEGIN
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const int GNCSocketVersion = 2;
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NSData *GNCSha256Data(NSData *data) {
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unsigned char output[CC_SHA256_DIGEST_LENGTH];
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CC_LONG length = (CC_LONG)data.length;
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if (!CC_SHA256(data.bytes, length, output)) return nil;
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return [NSData dataWithBytes:output length:CC_SHA256_DIGEST_LENGTH];
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}
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NSData *GNCSha256String(NSString *string) {
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return GNCSha256Data([string dataUsingEncoding:NSUTF8StringEncoding]);
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}
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NSData *GNCMd5Data(NSData *data) {
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unsigned char md5Buffer[CC_MD5_DIGEST_LENGTH];
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CC_MD5(data.bytes, (CC_LONG)data.length, md5Buffer);
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return [NSData dataWithBytes:md5Buffer length:CC_MD5_DIGEST_LENGTH];
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}
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NSData *GNCMd5String(NSString *string) {
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return GNCMd5Data([string dataUsingEncoding:NSUTF8StringEncoding]);
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}
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NSString *GNCConvertDataToHexString(NSData *_Nullable data) {
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NSUInteger dataLength = data.length;
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if (dataLength == 0) {
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return @"0x";
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}
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const unsigned char *dataBuffer = (const unsigned char *)data.bytes;
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NSMutableString *hexString = [NSMutableString stringWithCapacity:dataLength * 2];
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for (NSUInteger i = 0; i < dataLength; ++i) {
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[hexString appendFormat:@"%02lx", (unsigned long)dataBuffer[i]];
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}
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return [NSString stringWithFormat:@"0x%@", hexString];
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}
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NS_ASSUME_NONNULL_END
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