最近檢測APP應用的網絡請求，發現HTTP方式的接口，請求的數據比較容易讓不道德的人截取並加以利用。所以建議接口請求數據的方式還是使用HTTPS(SSL)，相對的安全些。
在iOS中，使用NSURLConnection來請求HTTPS，就需要處理SSL認證，NSURLConnectionDelegate中定義了處理認證的方法：
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– connection:canAuthenticateAgainstProtectionSpace:
– connection:didReceiveAuthenticationChallenge:
- connection:didCancelAuthenticationChallenge:
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NSURLConnection中處理SSL
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- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace{
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
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- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{
[challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
}
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- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
static CFArrayRef certs;
if (!certs) {
NSData *certData =[NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"srca" ofType:@"cer"]];
SecCertificateRef rootcert =SecCertificateCreateWithData(kCFAllocatorDefault,CFBridgingRetain(certData));
const void *array[1] = { rootcert };
certs = CFArrayCreate(NULL, array, 1, &kCFTypeArrayCallBacks);
CFRelease(rootcert); // for completeness, really does not matter
}
SecTrustRef trust = [[challenge protectionSpace] serverTrust];
int err;
SecTrustResultType trustResult = 0;
err = SecTrustSetAnchorCertificates(trust, certs);
if (err == noErr) {
err = SecTrustEvaluate(trust,&trustResult);
}
CFRelease(trust);
BOOL trusted = (err == noErr) && ((trustResult == kSecTrustResultProceed)||(trustResult == kSecTrustResultConfirm) || (trustResult == kSecTrustResultUnspecified));
if (trusted) {
[challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
}else{
[challenge.sender cancelAuthenticationChallenge:challenge];
}
}
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AFNetWorking框架中處理SSL
使用AFURLConnectionOperation類的兩個方法，將上面的代碼以block方式傳入即可。
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– setAuthenticationAgainstProtectionSpaceBlock:
– setAuthenticationChallengeBlock:
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