//===- llvm/unittest/Support/SipHashTest.cpp ------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/SipHash.h"
#include "llvm/ADT/ArrayRef.h"
#include "gtest/gtest.h"
#include <string.h>

using namespace llvm;

namespace {

// Tests from the SipHash reference implementation:
//   https://github.com/veorq/SipHash
// from test.c and vectors.h, with the latter vectors at the end of the file,
// forward-declared here.
extern const uint8_t ExpectedSipHash64[64][8];
extern const uint8_t ExpectedSipHash128[64][16];

TEST(SipHashTest, SipHash_2_4_64) {
  uint8_t K[16];
  for (size_t KI = 0; KI < sizeof(K); ++KI)
    K[KI] = KI;

  uint8_t In[64], Out[8];
  for (size_t InLen = 0; InLen < sizeof(In); ++InLen) {
    In[InLen] = InLen;
    getSipHash_2_4_64(ArrayRef(In, InLen), K, Out);
    for (size_t I = 0; I < sizeof(Out); ++I)
      EXPECT_EQ(ExpectedSipHash64[InLen][I], Out[I]);
  }
}

TEST(SipHashTest, SipHash_2_4_128) {
  uint8_t K[16];
  for (size_t KI = 0; KI < sizeof(K); ++KI)
    K[KI] = KI;

  uint8_t In[64], Out[16];
  for (size_t InLen = 0; InLen < sizeof(In); ++InLen) {
    In[InLen] = InLen;
    getSipHash_2_4_128(ArrayRef(In, InLen), K, Out);
    for (size_t I = 0; I < sizeof(Out); ++I)
      EXPECT_EQ(ExpectedSipHash128[InLen][I], Out[I]);
  }
}

// Tests for the 64-bit stable SipHash wrapper.
TEST(SipHashTest, StableSipHash) {
  EXPECT_EQ(0xB2BB69BB0A2AC0F1UL, getStableSipHash(""));
  EXPECT_EQ(0x9304ABFF427B72E8UL, getStableSipHash("strlen"));
  EXPECT_EQ(0x55F45179A08AE51BUL, getStableSipHash("_ZN1 ind; f"));
}

// Tests for the ptrauth-specific SipHash wrapper.
TEST(SipHashTest, PointerAuthSipHash) {
  // Test some basic cases.
  EXPECT_EQ(0xE793, getPointerAuthStableSipHash(""));
  EXPECT_EQ(0xF468, getPointerAuthStableSipHash("strlen"));
  EXPECT_EQ(0x2D15, getPointerAuthStableSipHash("_ZN1 ind; f"));

  // Test some known strings that are already enshrined in the ABI.
  EXPECT_EQ(0x6AE1, getPointerAuthStableSipHash("isa"));
  EXPECT_EQ(0xB5AB, getPointerAuthStableSipHash("objc_class:superclass"));
  EXPECT_EQ(0xC0BB, getPointerAuthStableSipHash("block_descriptor"));
  EXPECT_EQ(0xC310, getPointerAuthStableSipHash("method_list_t"));

  // Test limit cases where we differ from naive truncations from 64-bit hashes.
  EXPECT_EQ(1, getPointerAuthStableSipHash("_Zptrkvttf"));
  EXPECT_EQ(0xFFFF, getPointerAuthStableSipHash("_Zaflhllod"));
}

// Below are the unmodified expected outputs from the reference vectors.h.

const uint8_t ExpectedSipHash64[64][8] = {
    {
        0x31,
        0x0e,
        0x0e,
        0xdd,
        0x47,
        0xdb,
        0x6f,
        0x72,
    },
    {
        0xfd,
        0x67,
        0xdc,
        0x93,
        0xc5,
        0x39,
        0xf8,
        0x74,
    },
    {
        0x5a,
        0x4f,
        0xa9,
        0xd9,
        0x09,
        0x80,
        0x6c,
        0x0d,
    },
    {
        0x2d,
        0x7e,
        0xfb,
        0xd7,
        0x96,
        0x66,
        0x67,
        0x85,
    },
    {
        0xb7,
        0x87,
        0x71,
        0x27,
        0xe0,
        0x94,
        0x27,
        0xcf,
    },
    {
        0x8d,
        0xa6,
        0x99,
        0xcd,
        0x64,
        0x55,
        0x76,
        0x18,
    },
    {
        0xce,
        0xe3,
        0xfe,
        0x58,
        0x6e,
        0x46,
        0xc9,
        0xcb,
    },
    {
        0x37,
        0xd1,
        0x01,
        0x8b,
        0xf5,
        0x00,
        0x02,
        0xab,
    },
    {
        0x62,
        0x24,
        0x93,
        0x9a,
        0x79,
        0xf5,
        0xf5,
        0x93,
    },
    {
        0xb0,
        0xe4,
        0xa9,
        0x0b,
        0xdf,
        0x82,
        0x00,
        0x9e,
    },
    {
        0xf3,
        0xb9,
        0xdd,
        0x94,
        0xc5,
        0xbb,
        0x5d,
        0x7a,
    },
    {
        0xa7,
        0xad,
        0x6b,
        0x22,
        0x46,
        0x2f,
        0xb3,
        0xf4,
    },
    {
        0xfb,
        0xe5,
        0x0e,
        0x86,
        0xbc,
        0x8f,
        0x1e,
        0x75,
    },
    {
        0x90,
        0x3d,
        0x84,
        0xc0,
        0x27,
        0x56,
        0xea,
        0x14,
    },
    {
        0xee,
        0xf2,
        0x7a,
        0x8e,
        0x90,
        0xca,
        0x23,
        0xf7,
    },
    {
        0xe5,
        0x45,
        0xbe,
        0x49,
        0x61,
        0xca,
        0x29,
        0xa1,
    },
    {
        0xdb,
        0x9b,
        0xc2,
        0x57,
        0x7f,
        0xcc,
        0x2a,
        0x3f,
    },
    {
        0x94,
        0x47,
        0xbe,
        0x2c,
        0xf5,
        0xe9,
        0x9a,
        0x69,
    },
    {
        0x9c,
        0xd3,
        0x8d,
        0x96,
        0xf0,
        0xb3,
        0xc1,
        0x4b,
    },
    {
        0xbd,
        0x61,
        0x79,
        0xa7,
        0x1d,
        0xc9,
        0x6d,
        0xbb,
    },
    {
        0x98,
        0xee,
        0xa2,
        0x1a,
        0xf2,
        0x5c,
        0xd6,
        0xbe,
    },
    {
        0xc7,
        0x67,
        0x3b,
        0x2e,
        0xb0,
        0xcb,
        0xf2,
        0xd0,
    },
    {
        0x88,
        0x3e,
        0xa3,
        0xe3,
        0x95,
        0x67,
        0x53,
        0x93,
    },
    {
        0xc8,
        0xce,
        0x5c,
        0xcd,
        0x8c,
        0x03,
        0x0c,
        0xa8,
    },
    {
        0x94,
        0xaf,
        0x49,
        0xf6,
        0xc6,
        0x50,
        0xad,
        0xb8,
    },
    {
        0xea,
        0xb8,
        0x85,
        0x8a,
        0xde,
        0x92,
        0xe1,
        0xbc,
    },
    {
        0xf3,
        0x15,
        0xbb,
        0x5b,
        0xb8,
        0x35,
        0xd8,
        0x17,
    },
    {
        0xad,
        0xcf,
        0x6b,
        0x07,
        0x63,
        0x61,
        0x2e,
        0x2f,
    },
    {
        0xa5,
        0xc9,
        0x1d,
        0xa7,
        0xac,
        0xaa,
        0x4d,
        0xde,
    },
    {
        0x71,
        0x65,
        0x95,
        0x87,
        0x66,
        0x50,
        0xa2,
        0xa6,
    },
    {
        0x28,
        0xef,
        0x49,
        0x5c,
        0x53,
        0xa3,
        0x87,
        0xad,
    },
    {
        0x42,
        0xc3,
        0x41,
        0xd8,
        0xfa,
        0x92,
        0xd8,
        0x32,
    },
    {
        0xce,
        0x7c,
        0xf2,
        0x72,
        0x2f,
        0x51,
        0x27,
        0x71,
    },
    {
        0xe3,
        0x78,
        0x59,
        0xf9,
        0x46,
        0x23,
        0xf3,
        0xa7,
    },
    {
        0x38,
        0x12,
        0x05,
        0xbb,
        0x1a,
        0xb0,
        0xe0,
        0x12,
    },
    {
        0xae,
        0x97,
        0xa1,
        0x0f,
        0xd4,
        0x34,
        0xe0,
        0x15,
    },
    {
        0xb4,
        0xa3,
        0x15,
        0x08,
        0xbe,
        0xff,
        0x4d,
        0x31,
    },
    {
        0x81,
        0x39,
        0x62,
        0x29,
        0xf0,
        0x90,
        0x79,
        0x02,
    },
    {
        0x4d,
        0x0c,
        0xf4,
        0x9e,
        0xe5,
        0xd4,
        0xdc,
        0xca,
    },
    {
        0x5c,
        0x73,
        0x33,
        0x6a,
        0x76,
        0xd8,
        0xbf,
        0x9a,
    },
    {
        0xd0,
        0xa7,
        0x04,
        0x53,
        0x6b,
        0xa9,
        0x3e,
        0x0e,
    },
    {
        0x92,
        0x59,
        0x58,
        0xfc,
        0xd6,
        0x42,
        0x0c,
        0xad,
    },
    {
        0xa9,
        0x15,
        0xc2,
        0x9b,
        0xc8,
        0x06,
        0x73,
        0x18,
    },
    {
        0x95,
        0x2b,
        0x79,
        0xf3,
        0xbc,
        0x0a,
        0xa6,
        0xd4,
    },
    {
        0xf2,
        0x1d,
        0xf2,
        0xe4,
        0x1d,
        0x45,
        0x35,
        0xf9,
    },
    {
        0x87,
        0x57,
        0x75,
        0x19,
        0x04,
        0x8f,
        0x53,
        0xa9,
    },
    {
        0x10,
        0xa5,
        0x6c,
        0xf5,
        0xdf,
        0xcd,
        0x9a,
        0xdb,
    },
    {
        0xeb,
        0x75,
        0x09,
        0x5c,
        0xcd,
        0x98,
        0x6c,
        0xd0,
    },
    {
        0x51,
        0xa9,
        0xcb,
        0x9e,
        0xcb,
        0xa3,
        0x12,
        0xe6,
    },
    {
        0x96,
        0xaf,
        0xad,
        0xfc,
        0x2c,
        0xe6,
        0x66,
        0xc7,
    },
    {
        0x72,
        0xfe,
        0x52,
        0x97,
        0x5a,
        0x43,
        0x64,
        0xee,
    },
    {
        0x5a,
        0x16,
        0x45,
        0xb2,
        0x76,
        0xd5,
        0x92,
        0xa1,
    },
    {
        0xb2,
        0x74,
        0xcb,
        0x8e,
        0xbf,
        0x87,
        0x87,
        0x0a,
    },
    {
        0x6f,
        0x9b,
        0xb4,
        0x20,
        0x3d,
        0xe7,
        0xb3,
        0x81,
    },
    {
        0xea,
        0xec,
        0xb2,
        0xa3,
        0x0b,
        0x22,
        0xa8,
        0x7f,
    },
    {
        0x99,
        0x24,
        0xa4,
        0x3c,
        0xc1,
        0x31,
        0x57,
        0x24,
    },
    {
        0xbd,
        0x83,
        0x8d,
        0x3a,
        0xaf,
        0xbf,
        0x8d,
        0xb7,
    },
    {
        0x0b,
        0x1a,
        0x2a,
        0x32,
        0x65,
        0xd5,
        0x1a,
        0xea,
    },
    {
        0x13,
        0x50,
        0x79,
        0xa3,
        0x23,
        0x1c,
        0xe6,
        0x60,
    },
    {
        0x93,
        0x2b,
        0x28,
        0x46,
        0xe4,
        0xd7,
        0x06,
        0x66,
    },
    {
        0xe1,
        0x91,
        0x5f,
        0x5c,
        0xb1,
        0xec,
        0xa4,
        0x6c,
    },
    {
        0xf3,
        0x25,
        0x96,
        0x5c,
        0xa1,
        0x6d,
        0x62,
        0x9f,
    },
    {
        0x57,
        0x5f,
        0xf2,
        0x8e,
        0x60,
        0x38,
        0x1b,
        0xe5,
    },
    {
        0x72,
        0x45,
        0x06,
        0xeb,
        0x4c,
        0x32,
        0x8a,
        0x95,
    },
};

const uint8_t ExpectedSipHash128[64][16] = {
    {
        0xa3,
        0x81,
        0x7f,
        0x04,
        0xba,
        0x25,
        0xa8,
        0xe6,
        0x6d,
        0xf6,
        0x72,
        0x14,
        0xc7,
        0x55,
        0x02,
        0x93,
    },
    {
        0xda,
        0x87,
        0xc1,
        0xd8,
        0x6b,
        0x99,
        0xaf,
        0x44,
        0x34,
        0x76,
        0x59,
        0x11,
        0x9b,
        0x22,
        0xfc,
        0x45,
    },
    {
        0x81,
        0x77,
        0x22,
        0x8d,
        0xa4,
        0xa4,
        0x5d,
        0xc7,
        0xfc,
        0xa3,
        0x8b,
        0xde,
        0xf6,
        0x0a,
        0xff,
        0xe4,
    },
    {
        0x9c,
        0x70,
        0xb6,
        0x0c,
        0x52,
        0x67,
        0xa9,
        0x4e,
        0x5f,
        0x33,
        0xb6,
        0xb0,
        0x29,
        0x85,
        0xed,
        0x51,
    },
    {
        0xf8,
        0x81,
        0x64,
        0xc1,
        0x2d,
        0x9c,
        0x8f,
        0xaf,
        0x7d,
        0x0f,
        0x6e,
        0x7c,
        0x7b,
        0xcd,
        0x55,
        0x79,
    },
    {
        0x13,
        0x68,
        0x87,
        0x59,
        0x80,
        0x77,
        0x6f,
        0x88,
        0x54,
        0x52,
        0x7a,
        0x07,
        0x69,
        0x0e,
        0x96,
        0x27,
    },
    {
        0x14,
        0xee,
        0xca,
        0x33,
        0x8b,
        0x20,
        0x86,
        0x13,
        0x48,
        0x5e,
        0xa0,
        0x30,
        0x8f,
        0xd7,
        0xa1,
        0x5e,
    },
    {
        0xa1,
        0xf1,
        0xeb,
        0xbe,
        0xd8,
        0xdb,
        0xc1,
        0x53,
        0xc0,
        0xb8,
        0x4a,
        0xa6,
        0x1f,
        0xf0,
        0x82,
        0x39,
    },
    {
        0x3b,
        0x62,
        0xa9,
        0xba,
        0x62,
        0x58,
        0xf5,
        0x61,
        0x0f,
        0x83,
        0xe2,
        0x64,
        0xf3,
        0x14,
        0x97,
        0xb4,
    },
    {
        0x26,
        0x44,
        0x99,
        0x06,
        0x0a,
        0xd9,
        0xba,
        0xab,
        0xc4,
        0x7f,
        0x8b,
        0x02,
        0xbb,
        0x6d,
        0x71,
        0xed,
    },
    {
        0x00,
        0x11,
        0x0d,
        0xc3,
        0x78,
        0x14,
        0x69,
        0x56,
        0xc9,
        0x54,
        0x47,
        0xd3,
        0xf3,
        0xd0,
        0xfb,
        0xba,
    },
    {
        0x01,
        0x51,
        0xc5,
        0x68,
        0x38,
        0x6b,
        0x66,
        0x77,
        0xa2,
        0xb4,
        0xdc,
        0x6f,
        0x81,
        0xe5,
        0xdc,
        0x18,
    },
    {
        0xd6,
        0x26,
        0xb2,
        0x66,
        0x90,
        0x5e,
        0xf3,
        0x58,
        0x82,
        0x63,
        0x4d,
        0xf6,
        0x85,
        0x32,
        0xc1,
        0x25,
    },
    {
        0x98,
        0x69,
        0xe2,
        0x47,
        0xe9,
        0xc0,
        0x8b,
        0x10,
        0xd0,
        0x29,
        0x93,
        0x4f,
        0xc4,
        0xb9,
        0x52,
        0xf7,
    },
    {
        0x31,
        0xfc,
        0xef,
        0xac,
        0x66,
        0xd7,
        0xde,
        0x9c,
        0x7e,
        0xc7,
        0x48,
        0x5f,
        0xe4,
        0x49,
        0x49,
        0x02,
    },
    {
        0x54,
        0x93,
        0xe9,
        0x99,
        0x33,
        0xb0,
        0xa8,
        0x11,
        0x7e,
        0x08,
        0xec,
        0x0f,
        0x97,
        0xcf,
        0xc3,
        0xd9,
    },
    {
        0x6e,
        0xe2,
        0xa4,
        0xca,
        0x67,
        0xb0,
        0x54,
        0xbb,
        0xfd,
        0x33,
        0x15,
        0xbf,
        0x85,
        0x23,
        0x05,
        0x77,
    },
    {
        0x47,
        0x3d,
        0x06,
        0xe8,
        0x73,
        0x8d,
        0xb8,
        0x98,
        0x54,
        0xc0,
        0x66,
        0xc4,
        0x7a,
        0xe4,
        0x77,
        0x40,
    },
    {
        0xa4,
        0x26,
        0xe5,
        0xe4,
        0x23,
        0xbf,
        0x48,
        0x85,
        0x29,
        0x4d,
        0xa4,
        0x81,
        0xfe,
        0xae,
        0xf7,
        0x23,
    },
    {
        0x78,
        0x01,
        0x77,
        0x31,
        0xcf,
        0x65,
        0xfa,
        0xb0,
        0x74,
        0xd5,
        0x20,
        0x89,
        0x52,
        0x51,
        0x2e,
        0xb1,
    },
    {
        0x9e,
        0x25,
        0xfc,
        0x83,
        0x3f,
        0x22,
        0x90,
        0x73,
        0x3e,
        0x93,
        0x44,
        0xa5,
        0xe8,
        0x38,
        0x39,
        0xeb,
    },
    {
        0x56,
        0x8e,
        0x49,
        0x5a,
        0xbe,
        0x52,
        0x5a,
        0x21,
        0x8a,
        0x22,
        0x14,
        0xcd,
        0x3e,
        0x07,
        0x1d,
        0x12,
    },
    {
        0x4a,
        0x29,
        0xb5,
        0x45,
        0x52,
        0xd1,
        0x6b,
        0x9a,
        0x46,
        0x9c,
        0x10,
        0x52,
        0x8e,
        0xff,
        0x0a,
        0xae,
    },
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    },
};

} // end anonymous namespace