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62 lines
3.1 KiB
Objective-C
62 lines
3.1 KiB
Objective-C
#import "SecureStreamTest.h"
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#import "SrtpStream.h"
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#import "Util.h"
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#import "TestUtil.h"
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@implementation SecureStreamTest
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-(void) testPerturbedRoundTrip {
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for (int repeat = 0; repeat < 10; repeat++) {
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NSData* key = generatePseudoRandomData(16);
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NSData* macKey = generatePseudoRandomData(16);
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NSData* salt = generatePseudoRandomData(14);
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SrtpStream* ss = [SrtpStream srtpStreamWithCipherKey:key andMacKey:macKey andCipherIvSalt:salt];
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for (uint64_t sequenceNumber = 0; sequenceNumber < 0x70000; sequenceNumber += 0x7000) {
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RtpPacket* r = [RtpPacket rtpPacketWithDefaultsAndSequenceNumber:(uint16_t)(sequenceNumber & 0xFFFF) andPayload:generatePseudoRandomData(12)];
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RtpPacket* s = [ss encryptAndAuthenticateNormalRtpPacket:r];
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RtpPacket* r2 = [ss verifyAuthenticationAndDecryptSecuredRtpPacket:s];
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test(![r isEqualToRtpPacket:s]);
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test([r isEqualToRtpPacket:r2]);
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}
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}
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}
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-(void) testReject {
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NSData* key = generatePseudoRandomData(16);
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NSData* macKey = generatePseudoRandomData(16);
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NSData* salt = generatePseudoRandomData(14);
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SrtpStream* ss = [SrtpStream srtpStreamWithCipherKey:key andMacKey:macKey andCipherIvSalt:salt];
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// fuzzing
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testThrows([ss verifyAuthenticationAndDecryptSecuredRtpPacket:[RtpPacket rtpPacketWithDefaultsAndSequenceNumber:0 andPayload:generatePseudoRandomData(0)]]);
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testThrows([ss verifyAuthenticationAndDecryptSecuredRtpPacket:[RtpPacket rtpPacketWithDefaultsAndSequenceNumber:0 andPayload:generatePseudoRandomData(12)]]);
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testThrows([ss verifyAuthenticationAndDecryptSecuredRtpPacket:[RtpPacket rtpPacketWithDefaultsAndSequenceNumber:0 andPayload:generatePseudoRandomData(100)]]);
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// authenticated then bit flip
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RtpPacket* r = [RtpPacket rtpPacketWithDefaultsAndSequenceNumber:5 andPayload:generatePseudoRandomData(40)];
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RtpPacket* s = [ss encryptAndAuthenticateNormalRtpPacket:r];
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NSMutableData* m = [[s payload] mutableCopy];
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[m setUint8At:0 to:[m uint8At:0]^1];
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RtpPacket* sm = [r withPayload:m];
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testThrows([ss verifyAuthenticationAndDecryptSecuredRtpPacket:sm]);
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}
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-(void) testCannotDesyncExtendedSequenceNumberWithInjectedSequenceNumbers {
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NSData* key = generatePseudoRandomData(16);
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NSData* macKey = generatePseudoRandomData(16);
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NSData* salt = generatePseudoRandomData(14);
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SrtpStream* s1 = [SrtpStream srtpStreamWithCipherKey:key andMacKey:macKey andCipherIvSalt:salt];
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SrtpStream* s2 = [SrtpStream srtpStreamWithCipherKey:key andMacKey:macKey andCipherIvSalt:salt];
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for (NSUInteger i = 0; i < 0x20000; i+= 0x100) {
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RtpPacket* m = [RtpPacket rtpPacketWithDefaultsAndSequenceNumber:(uint16_t)(i & 0xFFFF) andPayload:generatePseudoRandomData(40)];
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testThrows([s1 verifyAuthenticationAndDecryptSecuredRtpPacket:m]);
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}
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RtpPacket* r = [RtpPacket rtpPacketWithDefaultsAndSequenceNumber:5 andPayload:generatePseudoRandomData(40)];
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RtpPacket* s = [s2 encryptAndAuthenticateNormalRtpPacket:r];
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RtpPacket* r2 = [s1 verifyAuthenticationAndDecryptSecuredRtpPacket:s];
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test([r isEqualToRtpPacket:r2]);
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}
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@end
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