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22 lines
630 B
C++
22 lines
630 B
C++
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#include <nn/hac/GameCardUtils.h>
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void nn::hac::GameCardUtils::getXciHeaderAesIv(const nn::hac::sGcHeader* hdr, byte_t* iv)
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{
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for (size_t i = 0; i < 16; i++)
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{
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iv[15-i] = hdr->aescbc_iv.iv[i];
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}
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}
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void nn::hac::GameCardUtils::decryptXciHeader(const byte_t* src, byte_t* dst, const byte_t* key)
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{
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byte_t iv[fnd::aes::kAesBlockSize];
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getXciHeaderAesIv((const nn::hac::sGcHeader*)src, iv);
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// copy plain
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memcpy(dst, src, nn::hac::gc::kHeaderEncOffset);
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// decrypt encrypted data
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fnd::aes::AesCbcDecrypt(src + nn::hac::gc::kHeaderEncOffset, nn::hac::gc::kHeaderEncSize, key, iv, dst + nn::hac::gc::kHeaderEncOffset);
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}
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