iOS中的“ RSA / NONE / OAEPWithSHA1AndMGF1Padding”

Question

在我的应用程序中，我想将公共密钥加密的密码发送到服务器。 在android中，我们使用了“ RSA / NONE / OAEPWithSHA1AndMGF1Padding”。 在iOS中可以使用哪种填充来达到相同的效果？ 我尝试使用kSecPaddingPKCS1，kSecPaddingOAEP和kSecPaddingPKCS1SHA1，但服务器无法解密数据。

Answer 1

- (NSString *)encryptRSA:(NSString *)plainTextString key:(SecKeyRef)publicKey
{
    size_t cipherBufferSize = SecKeyGetBlockSize(publicKey);
    uint8_t *cipherBuffer = malloc(cipherBufferSize);
    uint8_t *nonce = (uint8_t *)[plainTextString UTF8String];

    SecKeyEncrypt(publicKey,
                  kSecPaddingOAEP,
                  nonce,
                  strlen( (char*)nonce ),
                  &cipherBuffer[0],
                  &cipherBufferSize);

    NSData *encryptedData = [NSData dataWithBytes:cipherBuffer length:cipherBufferSize];
    return [encryptedData base64EncodedStringWithOptions:0];
}

-(NSString *)decryptRSA:(NSString *)cipherString key:(SecKeyRef)privateKey {
    size_t plainBufferSize = SecKeyGetBlockSize(privateKey);
    uint8_t *plainBuffer = malloc(plainBufferSize);
    NSData *incomingData = [[NSData alloc] initWithBase64EncodedString:cipherString options:0];

    uint8_t *cipherBuffer = (uint8_t*)[incomingData bytes];
    size_t cipherBufferSize = SecKeyGetBlockSize(privateKey);
    SecKeyDecrypt(privateKey,
                  kSecPaddingOAEP,
                  cipherBuffer,
                  cipherBufferSize,
                  plainBuffer,
                  &plainBufferSize);

    NSData *decryptedData = [NSData dataWithBytes:plainBuffer length:plainBufferSize];
    NSString *decryptedString = [[NSString alloc] initWithData:decryptedData encoding:NSUTF8StringEncoding]; return decryptedString;
}

来源： https : //launchkey.com/docs/api/encryption/objective-c/commoncrypto