63 lines
1.9 KiB
Objective-C
63 lines
1.9 KiB
Objective-C
/*
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* JBoss, Home of Professional Open Source.
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* Copyright Red Hat, Inc., and individual contributors
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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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* http://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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*/
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#import "AGVerifyKey.h"
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#import "AGUtil.h"
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#import <libsodium-ios/sodium/crypto_sign_ed25519.h>
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@implementation AGVerifyKey {
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NSData *_key;
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}
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- (id)initWithKey:(NSData *)key {
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NSParameterAssert(key != nil && [key length] == crypto_sign_ed25519_PUBLICKEYBYTES);
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self = [super init];
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if (self) {
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_key = key;
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}
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return self;
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}
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- (BOOL)verify:(NSData *)message signature:(NSData *)signature {
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NSParameterAssert(message != nil);
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NSParameterAssert(signature != nil && [signature length] == crypto_sign_ed25519_BYTES);
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NSMutableData *signAndMsg = [NSMutableData data];
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[signAndMsg appendData:signature];
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[signAndMsg appendData:message];
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unsigned long long bufferLen;
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NSMutableData *newBuffer = [[NSMutableData alloc] initWithLength:signAndMsg.length];
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int status = crypto_sign_ed25519_open([newBuffer mutableBytes],
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&bufferLen,
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[signAndMsg bytes],
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signAndMsg.length,
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[_key bytes]);
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if( status != 0 ) {
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NSLog(@"Invalid signature %i", status);
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return NO;
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}
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return YES;
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}
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@end |