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Crypto: don't modify EDAT_IV (all zeros)

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I didn't notice where it gets restored to zeros.
This commit is contained in:
Nekotekina 2021-01-13 21:55:04 +03:00
parent 6cf73fad13
commit caf02d1841
1 changed files with 6 additions and 2 deletions
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8
rpcs3/Crypto/unedat.cpp
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@ -18,12 +18,14 @@ static shared_mutex ec_mtx;
void generate_key(int crypto_mode, int version, unsigned char *key_final, unsigned char *iv_final, unsigned char *key, unsigned char *iv)
{
int mode = crypto_mode & 0xF0000000;
uchar temp_iv[16]{};
switch (mode)
{
case 0x10000000:
// Encrypted ERK.
// Decrypt the key with EDAT_KEY + EDAT_IV and copy the original IV.
aescbc128_decrypt(version ? EDAT_KEY_1 : EDAT_KEY_0, EDAT_IV, key, key_final, 0x10);
memcpy(temp_iv, EDAT_IV, 0x10);
aescbc128_decrypt(version ? EDAT_KEY_1 : EDAT_KEY_0, temp_iv, key, key_final, 0x10);
memcpy(iv_final, iv, 0x10);
break;
case 0x20000000:
@ -44,12 +46,14 @@ void generate_key(int crypto_mode, int version, unsigned char *key_final, unsign
void generate_hash(int hash_mode, int version, unsigned char *hash_final, unsigned char *hash)
{
int mode = hash_mode & 0xF0000000;
uchar temp_iv[16]{};
switch (mode)
{
case 0x10000000:
// Encrypted HASH.
// Decrypt the hash with EDAT_KEY + EDAT_IV.
aescbc128_decrypt(version ? EDAT_KEY_1 : EDAT_KEY_0, EDAT_IV, hash, hash_final, 0x10);
memcpy(temp_iv, EDAT_IV, 0x10);
aescbc128_decrypt(version ? EDAT_KEY_1 : EDAT_KEY_0, temp_iv, hash, hash_final, 0x10);
break;
case 0x20000000:
// Default HASH.