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33 lines
1016 B
Plaintext
33 lines
1016 B
Plaintext
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#include "crypto-helpers.hpp"
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#import <Foundation/Foundation.h>
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#import <Security/Security.h>
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#import <Security/SecKey.h>
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bool VerifySignature(const uint8_t *pubKey, const size_t pubKeyLen,
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const uint8_t *buf, const size_t len, const uint8_t *sig,
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const size_t sigLen)
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{
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NSData *pubKeyData = [NSData dataWithBytes:pubKey length:pubKeyLen];
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CFArrayRef items = nullptr;
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OSStatus res = SecItemImport((CFDataRef)pubKeyData, nullptr, nullptr,
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nullptr, (SecItemImportExportFlags)0,
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nullptr, nullptr, &items);
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if (res != errSecSuccess)
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return false;
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SecKeyRef pubKeyRef = (SecKeyRef)CFArrayGetValueAtIndex(items, 0);
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NSData *signedData = [NSData dataWithBytes:buf length:len];
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NSData *signature = [NSData dataWithBytes:sig length:sigLen];
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CFErrorRef errRef;
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bool result = SecKeyVerifySignature(
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pubKeyRef, kSecKeyAlgorithmRSASignatureMessagePKCS1v15SHA512,
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(__bridge CFDataRef)signedData, (__bridge CFDataRef)signature,
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&errRef);
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CFRelease(items);
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return result;
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};
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