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-rw-r--r--core/fdrm/crypto/fx_crypt.h60
-rw-r--r--core/fdrm/crypto/fx_crypt_sha.cpp112
-rw-r--r--core/fdrm/crypto/fx_crypt_unittest.cpp29
-rw-r--r--core/fpdfapi/parser/cpdf_security_handler.cpp123
4 files changed, 198 insertions, 126 deletions
diff --git a/core/fdrm/crypto/fx_crypt.h b/core/fdrm/crypto/fx_crypt.h
index fe043dcb12..a498f4e19b 100644
--- a/core/fdrm/crypto/fx_crypt.h
+++ b/core/fdrm/crypto/fx_crypt.h
@@ -13,17 +13,37 @@
extern "C" {
#endif
-struct CRYPT_rc4_context {
+typedef struct {
int32_t x;
int32_t y;
int32_t m[256];
-};
+} CRYPT_rc4_context;
-struct CRYPT_md5_context {
+typedef struct {
uint32_t total[2];
uint32_t state[4];
uint8_t buffer[64];
-};
+} CRYPT_md5_context;
+
+typedef struct {
+ unsigned int h[5];
+ unsigned char block[64];
+ int blkused;
+ unsigned int lenhi;
+ unsigned int lenlo;
+} CRYPT_sha1_context;
+
+typedef struct {
+ uint32_t total[2];
+ uint32_t state[8];
+ uint8_t buffer[64];
+} CRYPT_sha256_context;
+
+typedef struct {
+ uint64_t total[2];
+ uint64_t state[8];
+ uint8_t buffer[128];
+} CRYPT_sha384_context;
void CRYPT_ArcFourCryptBlock(uint8_t* data,
uint32_t size,
@@ -35,6 +55,7 @@ void CRYPT_ArcFourSetup(CRYPT_rc4_context* context,
void CRYPT_ArcFourCrypt(CRYPT_rc4_context* context,
uint8_t* data,
uint32_t size);
+
void CRYPT_AESSetKey(void* context,
uint32_t blocklen,
const uint8_t* key,
@@ -49,28 +70,39 @@ void CRYPT_AESEncrypt(void* context,
uint8_t* dest,
const uint8_t* src,
uint32_t size);
-void CRYPT_MD5Generate(const uint8_t* data, uint32_t size, uint8_t digest[16]);
+
void CRYPT_MD5Start(CRYPT_md5_context* context);
void CRYPT_MD5Update(CRYPT_md5_context* context,
const uint8_t* data,
uint32_t size);
void CRYPT_MD5Finish(CRYPT_md5_context* context, uint8_t digest[16]);
+void CRYPT_MD5Generate(const uint8_t* data, uint32_t size, uint8_t digest[16]);
+
+void CRYPT_SHA1Start(CRYPT_sha1_context* context);
+void CRYPT_SHA1Update(CRYPT_sha1_context* context,
+ const uint8_t* data,
+ uint32_t size);
+void CRYPT_SHA1Finish(CRYPT_sha1_context* context, uint8_t digest[20]);
void CRYPT_SHA1Generate(const uint8_t* data, uint32_t size, uint8_t digest[20]);
-void CRYPT_SHA1Start(void* context);
-void CRYPT_SHA1Update(void* context, const uint8_t* data, uint32_t size);
-void CRYPT_SHA1Finish(void* context, uint8_t digest[20]);
+
+void CRYPT_SHA256Start(CRYPT_sha256_context* context);
+void CRYPT_SHA256Update(CRYPT_sha256_context* context,
+ const uint8_t* data,
+ uint32_t size);
+void CRYPT_SHA256Finish(CRYPT_sha256_context* context, uint8_t digest[32]);
void CRYPT_SHA256Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[32]);
-void CRYPT_SHA256Start(void* context);
-void CRYPT_SHA256Update(void* context, const uint8_t* data, uint32_t size);
-void CRYPT_SHA256Finish(void* context, uint8_t digest[32]);
-void CRYPT_SHA384Start(void* context);
-void CRYPT_SHA384Update(void* context, const uint8_t* data, uint32_t size);
-void CRYPT_SHA384Finish(void* context, uint8_t digest[48]);
+
+void CRYPT_SHA384Start(CRYPT_sha384_context* context);
+void CRYPT_SHA384Update(CRYPT_sha384_context* context,
+ const uint8_t* data,
+ uint32_t size);
+void CRYPT_SHA384Finish(CRYPT_sha384_context* context, uint8_t digest[48]);
void CRYPT_SHA384Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[48]);
+
void CRYPT_SHA512Start(void* context);
void CRYPT_SHA512Update(void* context, const uint8_t* data, uint32_t size);
void CRYPT_SHA512Finish(void* context, uint8_t digest[64]);
diff --git a/core/fdrm/crypto/fx_crypt_sha.cpp b/core/fdrm/crypto/fx_crypt_sha.cpp
index 5fb45ab66a..79ff503334 100644
--- a/core/fdrm/crypto/fx_crypt_sha.cpp
+++ b/core/fdrm/crypto/fx_crypt_sha.cpp
@@ -9,12 +9,6 @@
#ifdef __cplusplus
extern "C" {
#endif
-typedef struct {
- unsigned int h[5];
- unsigned char block[64];
- int blkused;
- unsigned int lenhi, lenlo;
-} SHA_State;
#define rol(x, y) (((x) << (y)) | (((unsigned int)x) >> (32 - y)))
static void SHA_Core_Init(unsigned int h[5]) {
h[0] = 0x67452301;
@@ -78,14 +72,16 @@ static void SHATransform(unsigned int* digest, unsigned int* block) {
digest[3] += d;
digest[4] += e;
}
-void CRYPT_SHA1Start(void* context) {
- SHA_State* s = (SHA_State*)context;
+
+void CRYPT_SHA1Start(CRYPT_sha1_context* s) {
SHA_Core_Init(s->h);
s->blkused = 0;
s->lenhi = s->lenlo = 0;
}
-void CRYPT_SHA1Update(void* context, const uint8_t* data, uint32_t size) {
- SHA_State* s = (SHA_State*)context;
+
+void CRYPT_SHA1Update(CRYPT_sha1_context* s,
+ const uint8_t* data,
+ uint32_t size) {
unsigned char* q = (unsigned char*)data;
unsigned int wordblock[16];
int len = size;
@@ -114,8 +110,8 @@ void CRYPT_SHA1Update(void* context, const uint8_t* data, uint32_t size) {
s->blkused = len;
}
}
-void CRYPT_SHA1Finish(void* context, uint8_t digest[20]) {
- SHA_State* s = (SHA_State*)context;
+
+void CRYPT_SHA1Finish(CRYPT_sha1_context* s, uint8_t digest[20]) {
int i;
int pad;
unsigned char c[64];
@@ -149,16 +145,11 @@ void CRYPT_SHA1Finish(void* context, uint8_t digest[20]) {
void CRYPT_SHA1Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[20]) {
- SHA_State s;
+ CRYPT_sha1_context s;
CRYPT_SHA1Start(&s);
CRYPT_SHA1Update(&s, data, size);
CRYPT_SHA1Finish(&s, digest);
}
-typedef struct {
- uint32_t total[2];
- uint32_t state[8];
- uint8_t buffer[64];
-} sha256_context;
#define GET_UINT32(n, b, i) \
{ \
(n) = ((uint32_t)(b)[(i)] << 24) | ((uint32_t)(b)[(i) + 1] << 16) | \
@@ -171,8 +162,8 @@ typedef struct {
(b)[(i) + 2] = (uint8_t)((n) >> 8); \
(b)[(i) + 3] = (uint8_t)((n)); \
}
-void CRYPT_SHA256Start(void* context) {
- sha256_context* ctx = (sha256_context*)context;
+
+void CRYPT_SHA256Start(CRYPT_sha256_context* ctx) {
ctx->total[0] = 0;
ctx->total[1] = 0;
ctx->state[0] = 0x6A09E667;
@@ -184,7 +175,8 @@ void CRYPT_SHA256Start(void* context) {
ctx->state[6] = 0x1F83D9AB;
ctx->state[7] = 0x5BE0CD19;
}
-static void sha256_process(sha256_context* ctx, const uint8_t data[64]) {
+
+static void sha256_process(CRYPT_sha256_context* ctx, const uint8_t data[64]) {
uint32_t temp1, temp2, W[64];
uint32_t A, B, C, D, E, F, G, H;
GET_UINT32(W[0], data, 0);
@@ -300,14 +292,15 @@ static void sha256_process(sha256_context* ctx, const uint8_t data[64]) {
ctx->state[6] += G;
ctx->state[7] += H;
}
-void CRYPT_SHA256Update(void* context, const uint8_t* input, uint32_t length) {
- sha256_context* ctx = (sha256_context*)context;
- uint32_t left, fill;
- if (!length) {
+
+void CRYPT_SHA256Update(CRYPT_sha256_context* ctx,
+ const uint8_t* input,
+ uint32_t length) {
+ if (!length)
return;
- }
- left = ctx->total[0] & 0x3F;
- fill = 64 - left;
+
+ uint32_t left = ctx->total[0] & 0x3F;
+ uint32_t fill = 64 - left;
ctx->total[0] += length;
ctx->total[0] &= 0xFFFFFFFF;
if (ctx->total[0] < length) {
@@ -329,12 +322,13 @@ void CRYPT_SHA256Update(void* context, const uint8_t* input, uint32_t length) {
FXSYS_memcpy((void*)(ctx->buffer + left), (void*)input, length);
}
}
+
static const uint8_t sha256_padding[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-void CRYPT_SHA256Finish(void* context, uint8_t digest[32]) {
- sha256_context* ctx = (sha256_context*)context;
+
+void CRYPT_SHA256Finish(CRYPT_sha256_context* ctx, uint8_t digest[32]) {
uint32_t last, padn;
uint32_t high, low;
uint8_t msglen[8];
@@ -355,19 +349,16 @@ void CRYPT_SHA256Finish(void* context, uint8_t digest[32]) {
PUT_UINT32(ctx->state[6], digest, 24);
PUT_UINT32(ctx->state[7], digest, 28);
}
+
void CRYPT_SHA256Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[32]) {
- sha256_context ctx;
+ CRYPT_sha256_context ctx;
CRYPT_SHA256Start(&ctx);
CRYPT_SHA256Update(&ctx, data, size);
CRYPT_SHA256Finish(&ctx, digest);
}
-typedef struct {
- uint64_t total[2];
- uint64_t state[8];
- uint8_t buffer[128];
-} sha384_context;
+
uint64_t FX_ato64i(const FX_CHAR* str) {
ASSERT(str);
uint64_t ret = 0;
@@ -389,12 +380,12 @@ uint64_t FX_ato64i(const FX_CHAR* str) {
}
return ret;
}
-void CRYPT_SHA384Start(void* context) {
- if (!context) {
+
+void CRYPT_SHA384Start(CRYPT_sha384_context* ctx) {
+ if (!ctx)
return;
- }
- sha384_context* ctx = (sha384_context*)context;
- FXSYS_memset(ctx, 0, sizeof(sha384_context));
+
+ FXSYS_memset(ctx, 0, sizeof(CRYPT_sha384_context));
ctx->state[0] = FX_ato64i("cbbb9d5dc1059ed8");
ctx->state[1] = FX_ato64i("629a292a367cd507");
ctx->state[2] = FX_ato64i("9159015a3070dd17");
@@ -404,6 +395,7 @@ void CRYPT_SHA384Start(void* context) {
ctx->state[6] = FX_ato64i("db0c2e0d64f98fa7");
ctx->state[7] = FX_ato64i("47b5481dbefa4fa4");
}
+
#define SHA384_F0(x, y, z) ((x & y) | (z & (x | y)))
#define SHA384_F1(x, y, z) (z ^ (x & (y ^ z)))
#define SHA384_SHR(x, n) (x >> n)
@@ -422,6 +414,9 @@ void CRYPT_SHA384Start(void* context) {
d += temp1; \
h = temp1 + temp2; \
}
+#define SHA384_R(t) \
+ (W[t] = SHA384_S1(W[t - 2]) + W[t - 7] + SHA384_S0(W[t - 15]) + W[t - 16])
+
static const uint8_t sha384_padding[128] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -430,8 +425,7 @@ static const uint8_t sha384_padding[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
-#define SHA384_R(t) \
- (W[t] = SHA384_S1(W[t - 2]) + W[t - 7] + SHA384_S0(W[t - 15]) + W[t - 16])
+
static const FX_CHAR* constants[] = {
"428a2f98d728ae22", "7137449123ef65cd", "b5c0fbcfec4d3b2f",
"e9b5dba58189dbbc", "3956c25bf348b538", "59f111f1b605d019",
@@ -479,7 +473,8 @@ static const FX_CHAR* constants[] = {
(b)[(i) + 6] = (uint8_t)((n) >> 8); \
(b)[(i) + 7] = (uint8_t)((n)); \
}
-static void sha384_process(sha384_context* ctx, const uint8_t data[128]) {
+
+static void sha384_process(CRYPT_sha384_context* ctx, const uint8_t data[128]) {
uint64_t temp1, temp2;
uint64_t A, B, C, D, E, F, G, H;
uint64_t W[80];
@@ -546,8 +541,10 @@ static void sha384_process(sha384_context* ctx, const uint8_t data[128]) {
ctx->state[6] += G;
ctx->state[7] += H;
}
-void CRYPT_SHA384Update(void* context, const uint8_t* input, uint32_t length) {
- sha384_context* ctx = (sha384_context*)context;
+
+void CRYPT_SHA384Update(CRYPT_sha384_context* ctx,
+ const uint8_t* input,
+ uint32_t length) {
uint32_t left, fill;
if (!length) {
return;
@@ -574,8 +571,8 @@ void CRYPT_SHA384Update(void* context, const uint8_t* input, uint32_t length) {
FXSYS_memcpy((void*)(ctx->buffer + left), (void*)input, length);
}
}
-void CRYPT_SHA384Finish(void* context, uint8_t digest[48]) {
- sha384_context* ctx = (sha384_context*)context;
+
+void CRYPT_SHA384Finish(CRYPT_sha384_context* ctx, uint8_t digest[48]) {
uint32_t last, padn;
uint8_t msglen[16];
FXSYS_memset(msglen, 0, 16);
@@ -595,20 +592,22 @@ void CRYPT_SHA384Finish(void* context, uint8_t digest[48]) {
PUT_UINT64(ctx->state[4], digest, 32);
PUT_UINT64(ctx->state[5], digest, 40);
}
+
void CRYPT_SHA384Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[64]) {
- sha384_context context;
+ CRYPT_sha384_context context;
CRYPT_SHA384Start(&context);
CRYPT_SHA384Update(&context, data, size);
CRYPT_SHA384Finish(&context, digest);
}
+
void CRYPT_SHA512Start(void* context) {
if (!context) {
return;
}
- sha384_context* ctx = (sha384_context*)context;
- FXSYS_memset(ctx, 0, sizeof(sha384_context));
+ CRYPT_sha384_context* ctx = (CRYPT_sha384_context*)context;
+ FXSYS_memset(ctx, 0, sizeof(CRYPT_sha384_context));
ctx->state[0] = FX_ato64i("6a09e667f3bcc908");
ctx->state[1] = FX_ato64i("bb67ae8584caa73b");
ctx->state[2] = FX_ato64i("3c6ef372fe94f82b");
@@ -618,11 +617,14 @@ void CRYPT_SHA512Start(void* context) {
ctx->state[6] = FX_ato64i("1f83d9abfb41bd6b");
ctx->state[7] = FX_ato64i("5be0cd19137e2179");
}
+
void CRYPT_SHA512Update(void* context, const uint8_t* data, uint32_t size) {
- CRYPT_SHA384Update(context, data, size);
+ CRYPT_sha384_context* ctx = (CRYPT_sha384_context*)context;
+ CRYPT_SHA384Update(ctx, data, size);
}
+
void CRYPT_SHA512Finish(void* context, uint8_t digest[64]) {
- sha384_context* ctx = (sha384_context*)context;
+ CRYPT_sha384_context* ctx = (CRYPT_sha384_context*)context;
uint32_t last, padn;
uint8_t msglen[16];
FXSYS_memset(msglen, 0, 16);
@@ -644,14 +646,16 @@ void CRYPT_SHA512Finish(void* context, uint8_t digest[64]) {
PUT_UINT64(ctx->state[6], digest, 48);
PUT_UINT64(ctx->state[7], digest, 56);
}
+
void CRYPT_SHA512Generate(const uint8_t* data,
uint32_t size,
uint8_t digest[64]) {
- sha384_context context;
+ CRYPT_sha384_context context;
CRYPT_SHA512Start(&context);
CRYPT_SHA512Update(&context, data, size);
CRYPT_SHA512Finish(&context, digest);
}
+
#ifdef __cplusplus
};
#endif
diff --git a/core/fdrm/crypto/fx_crypt_unittest.cpp b/core/fdrm/crypto/fx_crypt_unittest.cpp
index 6db43fb54a..4e3da6e186 100644
--- a/core/fdrm/crypto/fx_crypt_unittest.cpp
+++ b/core/fdrm/crypto/fx_crypt_unittest.cpp
@@ -198,3 +198,32 @@ TEST(FXCRYPT, ContextWithStringData) {
std::string expected = "900150983cd24fb0d6963f7d28e17f72";
EXPECT_EQ(expected, actual);
}
+
+TEST(FXCRYPT, Sha256TestB1) {
+ // Example B.1 from FIPS 180-2: one-block message.
+ const char* input = "abc";
+ const uint8_t expected[32] = {0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
+ 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
+ 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
+ 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad};
+ uint8_t actual[32];
+ CRYPT_SHA256Generate(reinterpret_cast<const uint8_t*>(input), strlen(input),
+ actual);
+ for (size_t i = 0; i < 32; ++i)
+ EXPECT_EQ(expected[i], actual[i]) << " at byte " << i;
+}
+
+TEST(FXCRYPT, Sha256TestB2) {
+ // Example B.2 from FIPS 180-2: multi-block message.
+ const char* input =
+ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
+ const uint8_t expected[32] = {0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
+ 0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
+ 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
+ 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1};
+ uint8_t actual[32];
+ CRYPT_SHA256Generate(reinterpret_cast<const uint8_t*>(input), strlen(input),
+ actual);
+ for (size_t i = 0; i < 32; ++i)
+ EXPECT_EQ(expected[i], actual[i]) << " at byte " << i;
+}
diff --git a/core/fpdfapi/parser/cpdf_security_handler.cpp b/core/fpdfapi/parser/cpdf_security_handler.cpp
index 3f10807caf..5476b5485e 100644
--- a/core/fpdfapi/parser/cpdf_security_handler.cpp
+++ b/core/fpdfapi/parser/cpdf_security_handler.cpp
@@ -228,21 +228,22 @@ int BigOrder64BitsMod3(uint8_t* data) {
}
return (int)ret;
}
+
void Revision6_Hash(const uint8_t* password,
uint32_t size,
const uint8_t* salt,
const uint8_t* vector,
uint8_t* hash) {
- int iBlockSize = 32;
- uint8_t sha[128];
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, password, size);
- CRYPT_SHA256Update(sha, salt, 8);
- if (vector) {
- CRYPT_SHA256Update(sha, vector, 48);
- }
+ CRYPT_sha256_context sha;
+ CRYPT_SHA256Start(&sha);
+ CRYPT_SHA256Update(&sha, password, size);
+ CRYPT_SHA256Update(&sha, salt, 8);
+ if (vector)
+ CRYPT_SHA256Update(&sha, vector, 48);
+
uint8_t digest[32];
- CRYPT_SHA256Finish(sha, digest);
+ CRYPT_SHA256Finish(&sha, digest);
+
CFX_ByteTextBuf buf;
uint8_t* input = digest;
uint8_t* key = input;
@@ -251,6 +252,7 @@ void Revision6_Hash(const uint8_t* password,
int iBufLen = buf.GetLength();
CFX_ByteTextBuf interDigest;
int i = 0;
+ int iBlockSize = 32;
uint8_t* aes = FX_Alloc(uint8_t, 2048);
while (i < 64 || i < E[iBufLen - 1] + 32) {
int iRoundSize = size + iBlockSize;
@@ -304,52 +306,54 @@ void Revision6_Hash(const uint8_t* password,
FXSYS_memcpy(hash, input, 32);
}
}
+
bool CPDF_SecurityHandler::AES256_CheckPassword(const uint8_t* password,
uint32_t size,
bool bOwner,
uint8_t* key) {
- CFX_ByteString okey =
- m_pEncryptDict ? m_pEncryptDict->GetStringFor("O") : CFX_ByteString();
- if (okey.GetLength() < 48) {
+ if (!m_pEncryptDict)
return false;
- }
- CFX_ByteString ukey =
- m_pEncryptDict ? m_pEncryptDict->GetStringFor("U") : CFX_ByteString();
- if (ukey.GetLength() < 48) {
+
+ CFX_ByteString okey = m_pEncryptDict->GetStringFor("O");
+ if (okey.GetLength() < 48)
return false;
- }
- const uint8_t* pkey = (bOwner ? okey : ukey).raw_str();
- uint8_t sha[128];
+
+ CFX_ByteString ukey = m_pEncryptDict->GetStringFor("U");
+ if (ukey.GetLength() < 48)
+ return false;
+
+ const uint8_t* pkey = bOwner ? okey.raw_str() : ukey.raw_str();
+ CRYPT_sha256_context sha;
uint8_t digest[32];
if (m_Revision >= 6) {
Revision6_Hash(password, size, (const uint8_t*)pkey + 32,
bOwner ? ukey.raw_str() : nullptr, digest);
} else {
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, password, size);
- CRYPT_SHA256Update(sha, pkey + 32, 8);
- if (bOwner) {
- CRYPT_SHA256Update(sha, ukey.raw_str(), 48);
- }
- CRYPT_SHA256Finish(sha, digest);
+ CRYPT_SHA256Start(&sha);
+ CRYPT_SHA256Update(&sha, password, size);
+ CRYPT_SHA256Update(&sha, pkey + 32, 8);
+ if (bOwner)
+ CRYPT_SHA256Update(&sha, ukey.raw_str(), 48);
+
+ CRYPT_SHA256Finish(&sha, digest);
}
- if (FXSYS_memcmp(digest, pkey, 32) != 0) {
+ if (FXSYS_memcmp(digest, pkey, 32) != 0)
return false;
- }
- if (!key) {
+
+ if (!key)
return true;
- }
+
if (m_Revision >= 6) {
Revision6_Hash(password, size, (const uint8_t*)pkey + 40,
bOwner ? ukey.raw_str() : nullptr, digest);
} else {
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, password, size);
- CRYPT_SHA256Update(sha, pkey + 40, 8);
- if (bOwner) {
- CRYPT_SHA256Update(sha, ukey.raw_str(), 48);
- }
- CRYPT_SHA256Finish(sha, digest);
+ CRYPT_SHA256Start(&sha);
+ CRYPT_SHA256Update(&sha, password, size);
+ CRYPT_SHA256Update(&sha, pkey + 40, 8);
+ if (bOwner)
+ CRYPT_SHA256Update(&sha, ukey.raw_str(), 48);
+
+ CRYPT_SHA256Finish(&sha, digest);
}
CFX_ByteString ekey = m_pEncryptDict
? m_pEncryptDict->GetStringFor(bOwner ? "OE" : "UE")
@@ -533,12 +537,12 @@ void CPDF_SecurityHandler::OnCreate(CPDF_Dictionary* pEncryptDict,
}
if (m_Revision >= 5) {
int t = (int)time(nullptr);
- uint8_t sha[128];
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, (uint8_t*)&t, sizeof t);
- CRYPT_SHA256Update(sha, m_EncryptKey, 32);
- CRYPT_SHA256Update(sha, (uint8_t*)"there", 5);
- CRYPT_SHA256Finish(sha, m_EncryptKey);
+ CRYPT_sha256_context sha;
+ CRYPT_SHA256Start(&sha);
+ CRYPT_SHA256Update(&sha, (uint8_t*)&t, sizeof t);
+ CRYPT_SHA256Update(&sha, m_EncryptKey, 32);
+ CRYPT_SHA256Update(&sha, (uint8_t*)"there", 5);
+ CRYPT_SHA256Finish(&sha, m_EncryptKey);
AES256_SetPassword(pEncryptDict, user_pass, user_size, false, m_EncryptKey);
if (bDefault) {
AES256_SetPassword(pEncryptDict, owner_pass, owner_size, true,
@@ -632,25 +636,28 @@ void CPDF_SecurityHandler::AES256_SetPassword(CPDF_Dictionary* pEncryptDict,
uint32_t size,
bool bOwner,
const uint8_t* key) {
- uint8_t sha[128];
- CRYPT_SHA1Start(sha);
- CRYPT_SHA1Update(sha, key, 32);
- CRYPT_SHA1Update(sha, (uint8_t*)"hello", 5);
+ CRYPT_sha1_context sha;
+ CRYPT_SHA1Start(&sha);
+ CRYPT_SHA1Update(&sha, key, 32);
+ CRYPT_SHA1Update(&sha, (uint8_t*)"hello", 5);
+
uint8_t digest[20];
- CRYPT_SHA1Finish(sha, digest);
+ CRYPT_SHA1Finish(&sha, digest);
+
CFX_ByteString ukey = pEncryptDict->GetStringFor("U");
+ CRYPT_sha256_context sha2;
uint8_t digest1[48];
if (m_Revision >= 6) {
Revision6_Hash(password, size, digest, bOwner ? ukey.raw_str() : nullptr,
digest1);
} else {
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, password, size);
- CRYPT_SHA256Update(sha, digest, 8);
+ CRYPT_SHA256Start(&sha2);
+ CRYPT_SHA256Update(&sha2, password, size);
+ CRYPT_SHA256Update(&sha2, digest, 8);
if (bOwner) {
- CRYPT_SHA256Update(sha, ukey.raw_str(), ukey.GetLength());
+ CRYPT_SHA256Update(&sha2, ukey.raw_str(), ukey.GetLength());
}
- CRYPT_SHA256Finish(sha, digest1);
+ CRYPT_SHA256Finish(&sha2, digest1);
}
FXSYS_memcpy(digest1 + 32, digest, 16);
pEncryptDict->SetNewFor<CPDF_String>(bOwner ? "O" : "U",
@@ -659,13 +666,13 @@ void CPDF_SecurityHandler::AES256_SetPassword(CPDF_Dictionary* pEncryptDict,
Revision6_Hash(password, size, digest + 8,
bOwner ? ukey.raw_str() : nullptr, digest1);
} else {
- CRYPT_SHA256Start(sha);
- CRYPT_SHA256Update(sha, password, size);
- CRYPT_SHA256Update(sha, digest + 8, 8);
+ CRYPT_SHA256Start(&sha2);
+ CRYPT_SHA256Update(&sha2, password, size);
+ CRYPT_SHA256Update(&sha2, digest + 8, 8);
if (bOwner) {
- CRYPT_SHA256Update(sha, ukey.raw_str(), ukey.GetLength());
+ CRYPT_SHA256Update(&sha2, ukey.raw_str(), ukey.GetLength());
}
- CRYPT_SHA256Finish(sha, digest1);
+ CRYPT_SHA256Finish(&sha2, digest1);
}
uint8_t* aes = FX_Alloc(uint8_t, 2048);
CRYPT_AESSetKey(aes, 16, digest1, 32, true);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 21:57:34 +0000