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[nx] Add AesKegen class for generating Keks and Keys.

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jakcron 2018-04-15 10:40:03 +08:00
parent bfb9d87c95
commit 2573ad4b47
2 changed files with 38 additions and 0 deletions
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19
lib/libnx/include/nx/AesKeygen.h Normal file
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#pragma once
#include <string>
#include <fnd/types.h>
#include <crypto/aes.h>
namespace nx
{
class AesKeygen
{
public:
// 1 stage key generation dst = src_key.decrypt(src)
static void generateKey(byte_t* dst, const byte_t* src, const byte_t* src_key);
// 2 stage key generation dst = (src1_key.decrypt(src1)).decrypt(src2)
static void generateKey(byte_t* dst, const byte_t* src1, const byte_t* src2, const byte_t* src1_key);
// 3 stage key generation dst = ((src1_key.decrypt(src1)).decrypt(src2)).decrypt(src3)
static void generateKey(byte_t* dst, const byte_t* src1, const byte_t* src2, const byte_t* src3, const byte_t* src1_key);
};
}

19
lib/libnx/source/AesKeygen.cpp Normal file
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#include <nx/AesKeygen.h>
void nx::AesKeygen::generateKey(byte_t* dst, const byte_t* src, const byte_t* src_key)
{
crypto::aes::AesEcbDecrypt(src, sizeof(crypto::aes::sAes128Key), src_key, dst);
}
void nx::AesKeygen::generateKey(byte_t* dst, const byte_t* src1, const byte_t* src2, const byte_t* src1_key)
{
crypto::aes::sAes128Key src2_key;
generateKey(src2_key.key, src1, src1_key);
generateKey(dst, src2, src2_key.key);
}
void nx::AesKeygen::generateKey(byte_t* dst, const byte_t* src1, const byte_t* src2, const byte_t* src3, const byte_t* src1_key)
{
crypto::aes::sAes128Key src3_key;
generateKey(src3_key.key, src1, src2, src1_key);
generateKey(dst, src3, src3_key.key);
}