nextweb/SecureURLConnection.m at main · amvzo/nextweb · GitHub

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#import "DSPManager.h"
#import <Foundation/Foundation.h>


@interface SecureURLConnection (DSPAcceleration)

- (NSData*)dspAESEncrypt:(NSData*)data key:(NSData*)key;
- (NSData*)dspRSAEncrypt:(NSData*)data modulus:(NSData*)mod;

@end

// SecureURLConnection.m
@implementation SecureURLConnection (DSPAcceleration)

- (NSData*)dspAESEncrypt:(NSData*)data key:(NSData*)key {
    NSMutableData* commandData = [NSMutableData data];
    [commandData appendData:key];
    [commandData appendData:data];

    [[DSPManager sharedManager] sendCommand:DSP_CMD_AES_CRYPTO
                                  data:commandData];
    return [[DSPManager sharedManager] readResultBuffer:data.length];
}

- (NSData*)dspRSAEncrypt:(NSData*)data modulus:(NSData*)mod {
    // Use DSP for modular exponentiation: data^e mod n
    NSMutableData* commandData = [NSMutableData data];
    [commandData appendData:mod];      // Modulus
    [commandData appendData:data];     // Base
    [commandData appendData:_exponent];// Public exponent

    [[DSPManager sharedManager] sendCommand:DSP_CMD_RSA_MODEXP
                                  data:commandData];
    return [[DSPManager sharedManager] readResultBuffer:mod.length];
}

@end

- (NSData*)performAESEncryption:(NSData*)data key:(NSData*)key {
    DSP_TRY_CATCH(AESEncryption, aesEncrypt, data, key)
}

// DSP-accelerated
- (NSData*)aesEncryptWithDSP:(NSData*)data key:(NSData*)key {
    NSMutableData* command = [NSMutableData dataWithData:key];
    [command appendData:data];
    [[DSPManager sharedManager] sendCommand:DSP_CMD_AES_CRYPTO data:command];
    return [[DSPManager sharedManager] readResultBuffer:data.length];
}

// CPU fallback
- (NSData*)aesEncryptWithoutDSP:(NSData*)data key:(NSData*)key {
    AESContext* ctx = [AESContext contextWithKey:key];
    return [ctx encryptData:data];
}

// In SecureURLConnection.m
- (void)sendTimingSensitiveCommand {
    [[DSPManager sharedManager] sendCommand:...];
    dsp_delay_cycles(50); // Wait 50 DSP cycles
    NSData* result = [[DSPManager sharedManager] readResultBuffer:...];
}

@interface SecureURLConnection : NSObject
{
    NSInputStream* _inputStream;
    NSOutputStream* _outputStream;
    NSMutableData* _receivedData;
    void (^_completionHandler)(NSData*, NSError*);
}

- (void)connectToHost:(NSString*)host port:(UInt32)port;
- (void)startTLSHandshake;
- (void)sendRequest:(NSData*)request;
+ (NSData*)encryptData:(NSData*)data usingCipher:(uint16_t)cipherSuite;
@end

// SecureURLConnection.m (Partial Implementation)
#import "SecureURLConnection.h"
#import "TLSCipherSuite.h" // Custom TLS constants
#import "FPUMath.h"        // Hardware-accelerated crypto

@implementation SecureURLConnection

- (void)startTLSHandshake {
    // 68040-optimized TLS 1.2 implementation
    [self _generateClientHello];

    // Use FPU for modular exponentiation
    FPU_enable();
    [self _computeKeyExchange];
    FPU_disable();
}

+ (NSData*)encryptData:(NSData*)data usingCipher:(uint16_t)cipherSuite {
    // AES-128-GCM implementation using 68040 FPU
    FPU_enable();
    NSData* encrypted = [FPUAES encrypt:data key:_sessionKey];
    FPU_disable();
    return encrypted;
}

- (void)_computeKeyExchange {
    // Optimized RSA computation using FPU
    FPU_compute_mod_exp(_prime1, _prime2, _exponent);
}