Implementacje RSA w Objective C

Pracuję nad prostą aplikacją w obiekty-C, która używa RSA Algorithm. Chcę go użyć na serwerze/komunikacji klienta. Potrzebuję pomocy w implementacji algorytmów RSA w iOS/iPhone.Implementacje RSA w Objective C

Posiadam znajomość szyfrowania i odszyfrowywania.
Chcę biblioteki lub kodu źródłowego do dodania do mojego projektu.
Muszę iść CommonCryptor.h.

Źródło

2012-04-19 Amir iDev

możliwe duplikat [iPhone - Jak szyfrować NSData z kluczem publicznym i odszyfrować z kluczem prywatnym?] (http: // stackoverfl ow.com/questions/10072124/iphone-how-to-encrypt-nsdata-with-public-key-and-decrypt-with-private-key) – bobobobo

Próbowałem szyfrowania i deszyfrowania RSA dla NSString. Oto kod:

Dodaj Security.Framework do pakietu projektu.

ViewController.h Kod jest następujący:

#import <UIKit/UIKit.h> 
#import <Security/Security.h> 

@interface ViewController : UIViewController 
{ 
SecKeyRef publicKey; 
SecKeyRef privateKey; 
    NSData *publicTag; 
    NSData *privateTag; 
} 
- (void)encryptWithPublicKey:(uint8_t *)plainBuffer cipherBuffer:(uint8_t *)cipherBuffer; 
- (void)decryptWithPrivateKey:(uint8_t *)cipherBuffer plainBuffer:(uint8_t *)plainBuffer; 
- (SecKeyRef)getPublicKeyRef; 
- (SecKeyRef)getPrivateKeyRef; 
- (void)testAsymmetricEncryptionAndDecryption; 
- (void)generateKeyPair:(NSUInteger)keySize; 
@end

ViewController.m kod pliku jest następująca:

#import "ViewController.h" 

const size_t BUFFER_SIZE = 64; 
const size_t CIPHER_BUFFER_SIZE = 1024; 
const uint32_t PADDING = kSecPaddingNone; 
static const UInt8 publicKeyIdentifier[] = "com.apple.sample.publickey"; 
static const UInt8 privateKeyIdentifier[] = "com.apple.sample.privatekey"; 

@implementation ViewController 

-(SecKeyRef)getPublicKeyRef { 

    OSStatus sanityCheck = noErr; 
    SecKeyRef publicKeyReference = NULL; 

    if (publicKeyReference == NULL) { 
     [self generateKeyPair:512]; 
       NSMutableDictionary *queryPublicKey = [[NSMutableDictionary alloc] init]; 

     // Set the public key query dictionary. 
     [queryPublicKey setObject:(__bridge id)kSecClassKey forKey:(__bridge id)kSecClass]; 
     [queryPublicKey setObject:publicTag forKey:(__bridge id)kSecAttrApplicationTag]; 
     [queryPublicKey setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
     [queryPublicKey setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecReturnRef]; 


     // Get the key. 
     sanityCheck = SecItemCopyMatching((__bridge CFDictionaryRef)queryPublicKey, (CFTypeRef *)&publicKeyReference); 


     if (sanityCheck != noErr) 
     { 
      publicKeyReference = NULL; 
     } 


//  [queryPublicKey release]; 

    } else { publicKeyReference = publicKey; } 

    return publicKeyReference; } 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Release any cached data, images, etc that aren't in use. 
} 




- (void)testAsymmetricEncryptionAndDecryption { 

    uint8_t *plainBuffer; 
    uint8_t *cipherBuffer; 
    uint8_t *decryptedBuffer; 



    const char inputString[] = "This is a test demo for RSA Implementation in Objective C"; 
    int len = strlen(inputString); 
    // TODO: this is a hack since i know inputString length will be less than BUFFER_SIZE 
    if (len > BUFFER_SIZE) len = BUFFER_SIZE-1; 

    plainBuffer = (uint8_t *)calloc(BUFFER_SIZE, sizeof(uint8_t)); 
    cipherBuffer = (uint8_t *)calloc(CIPHER_BUFFER_SIZE, sizeof(uint8_t)); 
    decryptedBuffer = (uint8_t *)calloc(BUFFER_SIZE, sizeof(uint8_t)); 

    strncpy((char *)plainBuffer, inputString, len); 

    NSLog(@"init() plainBuffer: %s", plainBuffer); 
    //NSLog(@"init(): sizeof(plainBuffer): %d", sizeof(plainBuffer)); 
    [self encryptWithPublicKey:(UInt8 *)plainBuffer cipherBuffer:cipherBuffer]; 
    NSLog(@"encrypted data: %s", cipherBuffer); 
    //NSLog(@"init(): sizeof(cipherBuffer): %d", sizeof(cipherBuffer)); 
    [self decryptWithPrivateKey:cipherBuffer plainBuffer:decryptedBuffer]; 
    NSLog(@"decrypted data: %s", decryptedBuffer); 
    //NSLog(@"init(): sizeof(decryptedBuffer): %d", sizeof(decryptedBuffer)); 
    NSLog(@"====== /second test ======================================="); 

    free(plainBuffer); 
    free(cipherBuffer); 
    free(decryptedBuffer); 
} 

/* Borrowed from: 
* https://developer.apple.com/library/mac/#documentation/security/conceptual/CertKeyTrustProgGuide/iPhone_Tasks/iPhone_Tasks.html 
*/ 
- (void)encryptWithPublicKey:(uint8_t *)plainBuffer cipherBuffer:(uint8_t *)cipherBuffer 
{ 

    NSLog(@"== encryptWithPublicKey()"); 

    OSStatus status = noErr; 

    NSLog(@"** original plain text 0: %s", plainBuffer); 

    size_t plainBufferSize = strlen((char *)plainBuffer); 
    size_t cipherBufferSize = CIPHER_BUFFER_SIZE; 

    NSLog(@"SecKeyGetBlockSize() public = %lu", SecKeyGetBlockSize([self getPublicKeyRef])); 
    // Error handling 
    // Encrypt using the public. 
    status = SecKeyEncrypt([self getPublicKeyRef], 
          PADDING, 
          plainBuffer, 
          plainBufferSize, 
          &cipherBuffer[0], 
          &cipherBufferSize 
          ); 
    NSLog(@"encryption result code: %ld (size: %lu)", status, cipherBufferSize); 
    NSLog(@"encrypted text: %s", cipherBuffer); 
} 

- (void)decryptWithPrivateKey:(uint8_t *)cipherBuffer plainBuffer:(uint8_t *)plainBuffer 
{ 
    OSStatus status = noErr; 

    size_t cipherBufferSize = strlen((char *)cipherBuffer); 

    NSLog(@"decryptWithPrivateKey: length of buffer: %lu", BUFFER_SIZE); 
    NSLog(@"decryptWithPrivateKey: length of input: %lu", cipherBufferSize); 

    // DECRYPTION 
    size_t plainBufferSize = BUFFER_SIZE; 

    // Error handling 
    status = SecKeyDecrypt([self getPrivateKeyRef], 
          PADDING, 
          &cipherBuffer[0], 
          cipherBufferSize, 
          &plainBuffer[0], 
          &plainBufferSize 
          ); 
    NSLog(@"decryption result code: %ld (size: %lu)", status, plainBufferSize); 
    NSLog(@"FINAL decrypted text: %s", plainBuffer); 

} 



- (SecKeyRef)getPrivateKeyRef { 
    OSStatus resultCode = noErr; 
    SecKeyRef privateKeyReference = NULL; 
// NSData *privateTag = [NSData dataWithBytes:@"ABCD" length:strlen((const char *)@"ABCD")]; 
// if(privateKey == NULL) { 
     [self generateKeyPair:512]; 
     NSMutableDictionary * queryPrivateKey = [[NSMutableDictionary alloc] init]; 

     // Set the private key query dictionary. 
     [queryPrivateKey setObject:(__bridge id)kSecClassKey forKey:(__bridge id)kSecClass]; 
     [queryPrivateKey setObject:privateTag forKey:(__bridge id)kSecAttrApplicationTag]; 
     [queryPrivateKey setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
     [queryPrivateKey setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecReturnRef]; 

     // Get the key. 
     resultCode = SecItemCopyMatching((__bridge CFDictionaryRef)queryPrivateKey, (CFTypeRef *)&privateKeyReference); 
     NSLog(@"getPrivateKey: result code: %ld", resultCode); 

     if(resultCode != noErr) 
     { 
      privateKeyReference = NULL; 
     } 

//  [queryPrivateKey release]; 
// } else { 
//  privateKeyReference = privateKey; 
// } 

    return privateKeyReference; 
} 


#pragma mark - View lifecycle 



- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)viewDidUnload 
{ 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
    // e.g. self.myOutlet = nil; 
} 

- (void)viewWillAppear:(BOOL)animated 
{ 
    [super viewWillAppear:animated]; 
    privateTag = [[NSData alloc] initWithBytes:privateKeyIdentifier length:sizeof(privateKeyIdentifier)]; 
    publicTag = [[NSData alloc] initWithBytes:publicKeyIdentifier length:sizeof(publicKeyIdentifier)]; 
    [self testAsymmetricEncryptionAndDecryption]; 

} 

- (void)viewDidAppear:(BOOL)animated 
{ 
    [super viewDidAppear:animated]; 
} 

- (void)viewWillDisappear:(BOOL)animated 
{ 
    [super viewWillDisappear:animated]; 
} 

- (void)viewDidDisappear:(BOOL)animated 
{ 
    [super viewDidDisappear:animated]; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { 
     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 
    } else { 
     return YES; 
    } 
} 

- (void)generateKeyPair:(NSUInteger)keySize { 
    OSStatus sanityCheck = noErr; 
    publicKey = NULL; 
    privateKey = NULL; 

// LOGGING_FACILITY1(keySize == 512 || keySize == 1024 || keySize == 2048, @"%d is an invalid and unsupported key size.", keySize); 

    // First delete current keys. 
// [self deleteAsymmetricKeys]; 

    // Container dictionaries. 
    NSMutableDictionary * privateKeyAttr = [[NSMutableDictionary alloc] init]; 
    NSMutableDictionary * publicKeyAttr = [[NSMutableDictionary alloc] init]; 
    NSMutableDictionary * keyPairAttr = [[NSMutableDictionary alloc] init]; 

    // Set top level dictionary for the keypair. 
    [keyPairAttr setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
    [keyPairAttr setObject:[NSNumber numberWithUnsignedInteger:keySize] forKey:(__bridge id)kSecAttrKeySizeInBits]; 

    // Set the private key dictionary. 
    [privateKeyAttr setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecAttrIsPermanent]; 
    [privateKeyAttr setObject:privateTag forKey:(__bridge id)kSecAttrApplicationTag]; 
    // See SecKey.h to set other flag values. 

    // Set the public key dictionary. 
    [publicKeyAttr setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecAttrIsPermanent]; 
    [publicKeyAttr setObject:publicTag forKey:(__bridge id)kSecAttrApplicationTag]; 
    // See SecKey.h to set other flag values. 

    // Set attributes to top level dictionary. 
    [keyPairAttr setObject:privateKeyAttr forKey:(__bridge id)kSecPrivateKeyAttrs]; 
    [keyPairAttr setObject:publicKeyAttr forKey:(__bridge id)kSecPublicKeyAttrs]; 

    // SecKeyGeneratePair returns the SecKeyRefs just for educational purposes. 
    sanityCheck = SecKeyGeneratePair((__bridge CFDictionaryRef)keyPairAttr, &publicKey, &privateKey); 
// LOGGING_FACILITY(sanityCheck == noErr && publicKey != NULL && privateKey != NULL, @"Something really bad went wrong with generating the key pair."); 
    if(sanityCheck == noErr && publicKey != NULL && privateKey != NULL) 
    { 
     NSLog(@"Successful"); 
    } 
// [privateKeyAttr release]; 
// [publicKeyAttr release]; 
// [keyPairAttr release]; 
} 


@end

Oto gdzie pierwotnie opublikowany moją odpowiedź: Iphone - How to encrypt NSData with public key and decrypt with private key?

Daj mi znać, jeśli potrzebujesz więcej pomocy.

Mam nadzieję, że to pomoże.

Źródło

2012-04-19 07:13:52

Drogi Parth Bhatt, jestem wdzięczny za pomoc, ale ja nie zobacz zaszyfrowane dane, które mają być dencryptowane w formie tekstowej. –

@AmirIphone: Ok porządku. Ale czy możesz dać mi znać, na czym polegają dane wyjściowe: 'NSLog (@" FINAL deszyfrowany tekst:% s ", plainBuffer);' i 'NSLog (@" zaszyfrowany tekst:% s ", cipherBuffer);' otrzymać? –

@AmirIphone: Czy możesz mi powiedzieć, co otrzymujesz jako wyjście do Logs? –

To bardzo fajne! Jednak myślę, że nie powinno być podklasą z UIViewController, ale NSObject, zmieniłem i działa dla mnie, to jest tutaj:

UWAGA: Wszystkie prace PODZIĘKOWAŁY @Parth Bath

RSAManager. h

@interface RSAManager : NSObject 
{ 
    SecKeyRef publicKey; 
    SecKeyRef privateKey; 
    NSData *publicTag; 
    NSData *privateTag; 
} 

- (void)encryptWithPublicKey:(uint8_t *)plainBuffer cipherBuffer:(uint8_t *)cipherBuffer; 
- (void)decryptWithPrivateKey:(uint8_t *)cipherBuffer plainBuffer:(uint8_t *)plainBuffer; 
- (SecKeyRef)getPublicKeyRef; 
- (SecKeyRef)getPrivateKeyRef; 
- (void)testAsymmetricEncryptionAndDecryption; 
- (void)generateKeyPair:(NSUInteger)keySize; 

@end

RSAManager.m

#import "RSAManager.h" 

const size_t BUFFER_SIZE = 64; 
const size_t CIPHER_BUFFER_SIZE = 1024; 
const uint32_t PADDING = kSecPaddingNone; 
static const UInt8 publicKeyIdentifier[] = "com.apple.sample.publickey"; 
static const UInt8 privateKeyIdentifier[] = "com.apple.sample.privatekey"; 

@implementation RSAManager 

- (id)init 
{ 
    self = [super init]; 

    if(self) { 

     privateTag = [[NSData alloc] initWithBytes:privateKeyIdentifier length:sizeof(privateKeyIdentifier)]; 
     publicTag = [[NSData alloc] initWithBytes:publicKeyIdentifier length:sizeof(publicKeyIdentifier)]; 
     [self testAsymmetricEncryptionAndDecryption]; 
    } 

    return self; 
} 

-(SecKeyRef)getPublicKeyRef { 

    OSStatus sanityCheck = noErr; 
    SecKeyRef publicKeyReference = NULL; 

    if (publicKeyReference == NULL) { 
     [self generateKeyPair:512]; 
     NSMutableDictionary *queryPublicKey = [[NSMutableDictionary alloc] init]; 

     // Set the public key query dictionary. 
     [queryPublicKey setObject:(__bridge id)kSecClassKey forKey:(__bridge id)kSecClass]; 
     [queryPublicKey setObject:publicTag forKey:(__bridge id)kSecAttrApplicationTag]; 
     [queryPublicKey setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
     [queryPublicKey setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecReturnRef]; 

     // Get the key. 
     sanityCheck = SecItemCopyMatching((__bridge CFDictionaryRef)queryPublicKey, (CFTypeRef *)&publicKeyReference); 


     if (sanityCheck != noErr) 
     { 
     publicKeyReference = NULL; 
     } 

     //  [queryPublicKey release]; 

    } else { publicKeyReference = publicKey; } 

    return publicKeyReference; 
} 

- (void)testAsymmetricEncryptionAndDecryption { 

    uint8_t *plainBuffer; 
    uint8_t *cipherBuffer; 
    uint8_t *decryptedBuffer; 



    const char inputString[] = "This is a test demo for RSA Implementation in Objective C"; 
    int len = strlen(inputString); 
    // TODO: this is a hack since i know inputString length will be less than BUFFER_SIZE 
    if (len > BUFFER_SIZE) len = BUFFER_SIZE-1; 

    plainBuffer = (uint8_t *)calloc(BUFFER_SIZE, sizeof(uint8_t)); 
    cipherBuffer = (uint8_t *)calloc(CIPHER_BUFFER_SIZE, sizeof(uint8_t)); 
    decryptedBuffer = (uint8_t *)calloc(BUFFER_SIZE, sizeof(uint8_t)); 

    strncpy((char *)plainBuffer, inputString, len); 

    NSLog(@"init() plainBuffer: %s", plainBuffer); 
    //NSLog(@"init(): sizeof(plainBuffer): %d", sizeof(plainBuffer)); 
    [self encryptWithPublicKey:(UInt8 *)plainBuffer cipherBuffer:cipherBuffer]; 
    NSLog(@"encrypted data: %s", cipherBuffer); 
    //NSLog(@"init(): sizeof(cipherBuffer): %d", sizeof(cipherBuffer)); 
    [self decryptWithPrivateKey:cipherBuffer plainBuffer:decryptedBuffer]; 
    NSLog(@"decrypted data: %s", decryptedBuffer); 
    //NSLog(@"init(): sizeof(decryptedBuffer): %d", sizeof(decryptedBuffer)); 
    NSLog(@"====== /second test ======================================="); 

    free(plainBuffer); 
    free(cipherBuffer); 
    free(decryptedBuffer); 
} 

/* Borrowed from: 
* https://developer.apple.com/library/mac/#documentation/security/conceptual/CertKeyTrustProgGuide/iPhone_Tasks/iPhone_Tasks.html 
*/ 
- (void)encryptWithPublicKey:(uint8_t *)plainBuffer cipherBuffer:(uint8_t *)cipherBuffer 
{ 

    NSLog(@"== encryptWithPublicKey()"); 

    OSStatus status = noErr; 

    NSLog(@"** original plain text 0: %s", plainBuffer); 

    size_t plainBufferSize = strlen((char *)plainBuffer); 
    size_t cipherBufferSize = CIPHER_BUFFER_SIZE; 

    NSLog(@"SecKeyGetBlockSize() public = %lu", SecKeyGetBlockSize([self getPublicKeyRef])); 
    // Error handling 
    // Encrypt using the public. 
    status = SecKeyEncrypt([self getPublicKeyRef], 
          PADDING, 
          plainBuffer, 
          plainBufferSize, 
          &cipherBuffer[0], 
          &cipherBufferSize 
         ); 
    NSLog(@"encryption result code: %ld (size: %lu)", status, cipherBufferSize); 
    NSLog(@"encrypted text: %s", cipherBuffer); 
} 

- (void)decryptWithPrivateKey:(uint8_t *)cipherBuffer plainBuffer:(uint8_t *)plainBuffer 
{ 
    OSStatus status = noErr; 

    size_t cipherBufferSize = strlen((char *)cipherBuffer); 

    NSLog(@"decryptWithPrivateKey: length of buffer: %lu", BUFFER_SIZE); 
    NSLog(@"decryptWithPrivateKey: length of input: %lu", cipherBufferSize); 

    // DECRYPTION 
    size_t plainBufferSize = BUFFER_SIZE; 

    // Error handling 
    status = SecKeyDecrypt([self getPrivateKeyRef], 
          PADDING, 
          &cipherBuffer[0], 
          cipherBufferSize, 
          &plainBuffer[0], 
          &plainBufferSize 
         ); 
    NSLog(@"decryption result code: %ld (size: %lu)", status, plainBufferSize); 
    NSLog(@"FINAL decrypted text: %s", plainBuffer); 

} 



- (SecKeyRef)getPrivateKeyRef { 
    OSStatus resultCode = noErr; 
    SecKeyRef privateKeyReference = NULL; 
    // NSData *privateTag = [NSData dataWithBytes:@"ABCD" length:strlen((const char *)@"ABCD")]; 
    // if(privateKey == NULL) { 
    [self generateKeyPair:512]; 
    NSMutableDictionary * queryPrivateKey = [[NSMutableDictionary alloc] init]; 

    // Set the private key query dictionary. 
    [queryPrivateKey setObject:(__bridge id)kSecClassKey forKey:(__bridge id)kSecClass]; 
    [queryPrivateKey setObject:privateTag forKey:(__bridge id)kSecAttrApplicationTag]; 
    [queryPrivateKey setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
    [queryPrivateKey setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecReturnRef]; 

    // Get the key. 
    resultCode = SecItemCopyMatching((__bridge CFDictionaryRef)queryPrivateKey, (CFTypeRef *)&privateKeyReference); 
    NSLog(@"getPrivateKey: result code: %ld", resultCode); 

    if(resultCode != noErr) 
    { 
     privateKeyReference = NULL; 
    } 

    //  [queryPrivateKey release]; 
    // } else { 
    //  privateKeyReference = privateKey; 
    // } 

    return privateKeyReference; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { 
     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 
    } else { 
     return YES; 
    } 
} 

- (void)generateKeyPair:(NSUInteger)keySize { 
    OSStatus sanityCheck = noErr; 
    publicKey = NULL; 
    privateKey = NULL; 

    // LOGGING_FACILITY1(keySize == 512 || keySize == 1024 || keySize == 2048, @"%d is an invalid and unsupported key size.", keySize); 

    // First delete current keys. 
    // [self deleteAsymmetricKeys]; 

    // Container dictionaries. 
    NSMutableDictionary * privateKeyAttr = [[NSMutableDictionary alloc] init]; 
    NSMutableDictionary * publicKeyAttr = [[NSMutableDictionary alloc] init]; 
    NSMutableDictionary * keyPairAttr = [[NSMutableDictionary alloc] init]; 

    // Set top level dictionary for the keypair. 
    [keyPairAttr setObject:(__bridge id)kSecAttrKeyTypeRSA forKey:(__bridge id)kSecAttrKeyType]; 
    [keyPairAttr setObject:[NSNumber numberWithUnsignedInteger:keySize] forKey:(__bridge id)kSecAttrKeySizeInBits]; 

    // Set the private key dictionary. 
    [privateKeyAttr setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecAttrIsPermanent]; 
    [privateKeyAttr setObject:privateTag forKey:(__bridge id)kSecAttrApplicationTag]; 
    // See SecKey.h to set other flag values. 

    // Set the public key dictionary. 
    [publicKeyAttr setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecAttrIsPermanent]; 
    [publicKeyAttr setObject:publicTag forKey:(__bridge id)kSecAttrApplicationTag]; 
    // See SecKey.h to set other flag values. 

    // Set attributes to top level dictionary. 
    [keyPairAttr setObject:privateKeyAttr forKey:(__bridge id)kSecPrivateKeyAttrs]; 
    [keyPairAttr setObject:publicKeyAttr forKey:(__bridge id)kSecPublicKeyAttrs]; 

    // SecKeyGeneratePair returns the SecKeyRefs just for educational purposes. 
    sanityCheck = SecKeyGeneratePair((__bridge CFDictionaryRef)keyPairAttr, &publicKey, &privateKey); 
    // LOGGING_FACILITY(sanityCheck == noErr && publicKey != NULL && privateKey != NULL, @"Something really bad went wrong with generating the key pair."); 
    if(sanityCheck == noErr && publicKey != NULL && privateKey != NULL) 
    { 
     NSLog(@"Successful"); 
    } 
    // [privateKeyAttr release]; 
    // [publicKeyAttr release]; 
    // [keyPairAttr release]; 
} 

@end

Źródło

2013-10-07 09:55:49

Mam nadzieję, że możesz mi w tym pomóc. Co to jest BUFFER_SIZE? Potrzebuję być w stanie zaszyfrować/odszyfrować 20-100KB tekstu. Z Twoimi metodami pierwsze 64 znaki są szyfrowane/odszyfrowywane. Czy możesz wyjaśnić to nieco więcej lub wskazać mi właściwy kierunek, abym mógł o tym przeczytać. – pregmatch

Zazwyczaj zaszyfrujesz dane za pomocą symetrycznego algo, takiego jak AES i losowy klucz, a następnie zaszyfrujesz klucz AES za pomocą RSA. – zaph

Otrzymuję EXC_BAD_ACCESS at 'encryptWithPublicKey: cipherBuffer:' w 'NSLog (@" SecKeyGetBlockSize() public =% lu ", SecKeyGetBlockSize ([self getPublicKeyRef]));' ponieważ 'getPublicKeyRef' zwraca zero – Vive

Implementacje RSA w Objective C

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