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pl_u: Expose method to encrypt TTF to BFTTF
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@ -6,13 +6,6 @@
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#include <cstring>
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#include <vector>
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#include <FontChineseSimplified.h>
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#include <FontChineseTraditional.h>
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#include <FontExtendedChineseSimplified.h>
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#include <FontKorean.h>
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#include <FontNintendoExtended.h>
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#include <FontStandard.h>
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#include "common/assert.h"
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#include "common/common_paths.h"
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#include "common/common_types.h"
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@ -96,13 +89,18 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem
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static void EncryptSharedFont(const std::vector<u8>& input, Kernel::PhysicalMemory& output,
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std::size_t& offset) {
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ASSERT_MSG(offset + input.size() + 8 < SHARED_FONT_MEM_SIZE, "Shared fonts exceeds 17mb!");
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const u32 KEY = EXPECTED_MAGIC ^ EXPECTED_RESULT;
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std::memcpy(output.data() + offset, &EXPECTED_RESULT, sizeof(u32)); // Magic header
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const u32 ENC_SIZE = static_cast<u32>(input.size()) ^ KEY;
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std::memcpy(output.data() + offset + sizeof(u32), &ENC_SIZE, sizeof(u32));
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std::memcpy(output.data() + offset + (sizeof(u32) * 2), input.data(), input.size());
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offset += input.size() + (sizeof(u32) * 2);
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ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE,
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"Shared fonts exceeds 17mb!");
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const auto key = Common::swap32(EXPECTED_RESULT ^ EXPECTED_MAGIC);
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std::vector<u32> transformed_font(input.size() + 2);
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transformed_font[0] = Common::swap32(EXPECTED_MAGIC);
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transformed_font[1] = Common::swap32(input.size() * sizeof(u32)) ^ key;
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std::transform(input.begin(), input.end(), transformed_font.begin() + 2,
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[key](u32 in) { return in ^ key; });
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std::memcpy(output.data() + offset, transformed_font.data(),
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transformed_font.size() * sizeof(u32));
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offset += transformed_font.size() * sizeof(u32);
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}
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// Helper function to make BuildSharedFontsRawRegions a bit nicer
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@ -9,6 +9,8 @@
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namespace Service::NS {
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void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset);
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class PL_U final : public ServiceFramework<PL_U> {
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public:
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PL_U();
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