Index: core/src/fdrm/crypto/fx_crypt.cpp |
diff --git a/core/src/fdrm/crypto/fx_crypt.cpp b/core/src/fdrm/crypto/fx_crypt.cpp |
deleted file mode 100644 |
index c1016cdcd97a7ff4db6eae6ef5c8de500e004042..0000000000000000000000000000000000000000 |
--- a/core/src/fdrm/crypto/fx_crypt.cpp |
+++ /dev/null |
@@ -1,260 +0,0 @@ |
-// Copyright 2014 PDFium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
- |
-#include "core/include/fdrm/fx_crypt.h" |
- |
-#ifdef __cplusplus |
-extern "C" { |
-#endif |
-struct rc4_state { |
- int x, y, m[256]; |
-}; |
-void CRYPT_ArcFourSetup(void* context, const uint8_t* key, FX_DWORD length) { |
- rc4_state* s = (rc4_state*)context; |
- int i, j, k, *m, a; |
- s->x = 0; |
- s->y = 0; |
- m = s->m; |
- for (i = 0; i < 256; i++) { |
- m[i] = i; |
- } |
- j = k = 0; |
- for (i = 0; i < 256; i++) { |
- a = m[i]; |
- j = (j + a + key[k]) & 0xFF; |
- m[i] = m[j]; |
- m[j] = a; |
- if (++k >= (int)length) { |
- k = 0; |
- } |
- } |
-} |
-void CRYPT_ArcFourCrypt(void* context, unsigned char* data, FX_DWORD length) { |
- struct rc4_state* s = (struct rc4_state*)context; |
- int i, x, y, *m, a, b; |
- x = s->x; |
- y = s->y; |
- m = s->m; |
- for (i = 0; i < (int)length; i++) { |
- x = (x + 1) & 0xFF; |
- a = m[x]; |
- y = (y + a) & 0xFF; |
- m[x] = b = m[y]; |
- m[y] = a; |
- data[i] ^= m[(a + b) & 0xFF]; |
- } |
- s->x = x; |
- s->y = y; |
-} |
-void CRYPT_ArcFourCryptBlock(uint8_t* pData, |
- FX_DWORD size, |
- const uint8_t* key, |
- FX_DWORD keylen) { |
- rc4_state s; |
- CRYPT_ArcFourSetup(&s, key, keylen); |
- CRYPT_ArcFourCrypt(&s, pData, size); |
-} |
-struct md5_context { |
- FX_DWORD total[2]; |
- FX_DWORD state[4]; |
- uint8_t buffer[64]; |
-}; |
-#define GET_FX_DWORD(n, b, i) \ |
- { \ |
- (n) = (FX_DWORD)((uint8_t*)b)[(i)] | \ |
- (((FX_DWORD)((uint8_t*)b)[(i) + 1]) << 8) | \ |
- (((FX_DWORD)((uint8_t*)b)[(i) + 2]) << 16) | \ |
- (((FX_DWORD)((uint8_t*)b)[(i) + 3]) << 24); \ |
- } |
-#define PUT_FX_DWORD(n, b, i) \ |
- { \ |
- (((uint8_t*)b)[(i)]) = (uint8_t)(((n)) & 0xFF); \ |
- (((uint8_t*)b)[(i) + 1]) = (uint8_t)(((n) >> 8) & 0xFF); \ |
- (((uint8_t*)b)[(i) + 2]) = (uint8_t)(((n) >> 16) & 0xFF); \ |
- (((uint8_t*)b)[(i) + 3]) = (uint8_t)(((n) >> 24) & 0xFF); \ |
- } |
-void md5_process(struct md5_context* ctx, const uint8_t data[64]) { |
- FX_DWORD A, B, C, D, X[16]; |
- GET_FX_DWORD(X[0], data, 0); |
- GET_FX_DWORD(X[1], data, 4); |
- GET_FX_DWORD(X[2], data, 8); |
- GET_FX_DWORD(X[3], data, 12); |
- GET_FX_DWORD(X[4], data, 16); |
- GET_FX_DWORD(X[5], data, 20); |
- GET_FX_DWORD(X[6], data, 24); |
- GET_FX_DWORD(X[7], data, 28); |
- GET_FX_DWORD(X[8], data, 32); |
- GET_FX_DWORD(X[9], data, 36); |
- GET_FX_DWORD(X[10], data, 40); |
- GET_FX_DWORD(X[11], data, 44); |
- GET_FX_DWORD(X[12], data, 48); |
- GET_FX_DWORD(X[13], data, 52); |
- GET_FX_DWORD(X[14], data, 56); |
- GET_FX_DWORD(X[15], data, 60); |
-#define S(x, n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n))) |
-#define P(a, b, c, d, k, s, t) \ |
- { \ |
- a += F(b, c, d) + X[k] + t; \ |
- a = S(a, s) + b; \ |
- } |
- A = ctx->state[0]; |
- B = ctx->state[1]; |
- C = ctx->state[2]; |
- D = ctx->state[3]; |
-#define F(x, y, z) (z ^ (x & (y ^ z))) |
- P(A, B, C, D, 0, 7, 0xD76AA478); |
- P(D, A, B, C, 1, 12, 0xE8C7B756); |
- P(C, D, A, B, 2, 17, 0x242070DB); |
- P(B, C, D, A, 3, 22, 0xC1BDCEEE); |
- P(A, B, C, D, 4, 7, 0xF57C0FAF); |
- P(D, A, B, C, 5, 12, 0x4787C62A); |
- P(C, D, A, B, 6, 17, 0xA8304613); |
- P(B, C, D, A, 7, 22, 0xFD469501); |
- P(A, B, C, D, 8, 7, 0x698098D8); |
- P(D, A, B, C, 9, 12, 0x8B44F7AF); |
- P(C, D, A, B, 10, 17, 0xFFFF5BB1); |
- P(B, C, D, A, 11, 22, 0x895CD7BE); |
- P(A, B, C, D, 12, 7, 0x6B901122); |
- P(D, A, B, C, 13, 12, 0xFD987193); |
- P(C, D, A, B, 14, 17, 0xA679438E); |
- P(B, C, D, A, 15, 22, 0x49B40821); |
-#undef F |
-#define F(x, y, z) (y ^ (z & (x ^ y))) |
- P(A, B, C, D, 1, 5, 0xF61E2562); |
- P(D, A, B, C, 6, 9, 0xC040B340); |
- P(C, D, A, B, 11, 14, 0x265E5A51); |
- P(B, C, D, A, 0, 20, 0xE9B6C7AA); |
- P(A, B, C, D, 5, 5, 0xD62F105D); |
- P(D, A, B, C, 10, 9, 0x02441453); |
- P(C, D, A, B, 15, 14, 0xD8A1E681); |
- P(B, C, D, A, 4, 20, 0xE7D3FBC8); |
- P(A, B, C, D, 9, 5, 0x21E1CDE6); |
- P(D, A, B, C, 14, 9, 0xC33707D6); |
- P(C, D, A, B, 3, 14, 0xF4D50D87); |
- P(B, C, D, A, 8, 20, 0x455A14ED); |
- P(A, B, C, D, 13, 5, 0xA9E3E905); |
- P(D, A, B, C, 2, 9, 0xFCEFA3F8); |
- P(C, D, A, B, 7, 14, 0x676F02D9); |
- P(B, C, D, A, 12, 20, 0x8D2A4C8A); |
-#undef F |
-#define F(x, y, z) (x ^ y ^ z) |
- P(A, B, C, D, 5, 4, 0xFFFA3942); |
- P(D, A, B, C, 8, 11, 0x8771F681); |
- P(C, D, A, B, 11, 16, 0x6D9D6122); |
- P(B, C, D, A, 14, 23, 0xFDE5380C); |
- P(A, B, C, D, 1, 4, 0xA4BEEA44); |
- P(D, A, B, C, 4, 11, 0x4BDECFA9); |
- P(C, D, A, B, 7, 16, 0xF6BB4B60); |
- P(B, C, D, A, 10, 23, 0xBEBFBC70); |
- P(A, B, C, D, 13, 4, 0x289B7EC6); |
- P(D, A, B, C, 0, 11, 0xEAA127FA); |
- P(C, D, A, B, 3, 16, 0xD4EF3085); |
- P(B, C, D, A, 6, 23, 0x04881D05); |
- P(A, B, C, D, 9, 4, 0xD9D4D039); |
- P(D, A, B, C, 12, 11, 0xE6DB99E5); |
- P(C, D, A, B, 15, 16, 0x1FA27CF8); |
- P(B, C, D, A, 2, 23, 0xC4AC5665); |
-#undef F |
-#define F(x, y, z) (y ^ (x | ~z)) |
- P(A, B, C, D, 0, 6, 0xF4292244); |
- P(D, A, B, C, 7, 10, 0x432AFF97); |
- P(C, D, A, B, 14, 15, 0xAB9423A7); |
- P(B, C, D, A, 5, 21, 0xFC93A039); |
- P(A, B, C, D, 12, 6, 0x655B59C3); |
- P(D, A, B, C, 3, 10, 0x8F0CCC92); |
- P(C, D, A, B, 10, 15, 0xFFEFF47D); |
- P(B, C, D, A, 1, 21, 0x85845DD1); |
- P(A, B, C, D, 8, 6, 0x6FA87E4F); |
- P(D, A, B, C, 15, 10, 0xFE2CE6E0); |
- P(C, D, A, B, 6, 15, 0xA3014314); |
- P(B, C, D, A, 13, 21, 0x4E0811A1); |
- P(A, B, C, D, 4, 6, 0xF7537E82); |
- P(D, A, B, C, 11, 10, 0xBD3AF235); |
- P(C, D, A, B, 2, 15, 0x2AD7D2BB); |
- P(B, C, D, A, 9, 21, 0xEB86D391); |
-#undef F |
- ctx->state[0] += A; |
- ctx->state[1] += B; |
- ctx->state[2] += C; |
- ctx->state[3] += D; |
-} |
-void CRYPT_MD5Start(void* context) { |
- struct md5_context* ctx = (struct md5_context*)context; |
- ctx->total[0] = 0; |
- ctx->total[1] = 0; |
- ctx->state[0] = 0x67452301; |
- ctx->state[1] = 0xEFCDAB89; |
- ctx->state[2] = 0x98BADCFE; |
- ctx->state[3] = 0x10325476; |
-} |
-void CRYPT_MD5Update(void* pctx, const uint8_t* input, FX_DWORD length) { |
- struct md5_context* ctx = (struct md5_context*)pctx; |
- FX_DWORD left, fill; |
- if (!length) { |
- return; |
- } |
- left = (ctx->total[0] >> 3) & 0x3F; |
- fill = 64 - left; |
- ctx->total[0] += length << 3; |
- ctx->total[1] += length >> 29; |
- ctx->total[0] &= 0xFFFFFFFF; |
- ctx->total[1] += ctx->total[0] < length << 3; |
- if (left && length >= fill) { |
- FXSYS_memcpy((void*)(ctx->buffer + left), (void*)input, fill); |
- md5_process(ctx, ctx->buffer); |
- length -= fill; |
- input += fill; |
- left = 0; |
- } |
- while (length >= 64) { |
- md5_process(ctx, input); |
- length -= 64; |
- input += 64; |
- } |
- if (length) { |
- FXSYS_memcpy((void*)(ctx->buffer + left), (void*)input, length); |
- } |
-} |
-const uint8_t md5_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_MD5Finish(void* pctx, uint8_t digest[16]) { |
- struct md5_context* ctx = (struct md5_context*)pctx; |
- FX_DWORD last, padn; |
- uint8_t msglen[8]; |
- PUT_FX_DWORD(ctx->total[0], msglen, 0); |
- PUT_FX_DWORD(ctx->total[1], msglen, 4); |
- last = (ctx->total[0] >> 3) & 0x3F; |
- padn = (last < 56) ? (56 - last) : (120 - last); |
- CRYPT_MD5Update(ctx, md5_padding, padn); |
- CRYPT_MD5Update(ctx, msglen, 8); |
- PUT_FX_DWORD(ctx->state[0], digest, 0); |
- PUT_FX_DWORD(ctx->state[1], digest, 4); |
- PUT_FX_DWORD(ctx->state[2], digest, 8); |
- PUT_FX_DWORD(ctx->state[3], digest, 12); |
-} |
-void CRYPT_MD5Generate(const uint8_t* input, |
- FX_DWORD length, |
- uint8_t digest[16]) { |
- md5_context ctx; |
- CRYPT_MD5Start(&ctx); |
- CRYPT_MD5Update(&ctx, input, length); |
- CRYPT_MD5Finish(&ctx, digest); |
-} |
-static FX_BOOL (*g_PubKeyDecryptor)(const uint8_t* pData, |
- FX_DWORD size, |
- uint8_t* data_buf, |
- FX_DWORD& data_len) = NULL; |
-void CRYPT_SetPubKeyDecryptor(FX_BOOL (*func)(const uint8_t* pData, |
- FX_DWORD size, |
- uint8_t* data_buf, |
- FX_DWORD& data_len)) { |
- g_PubKeyDecryptor = func; |
-} |
-#ifdef __cplusplus |
-}; |
-#endif |