mirrors/Atmosphere
0
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere.git synced 2025-04-23 21:14:49 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

fusee: Pass package2 section data along with the decrypted metadata

Browse source
This commit is contained in:
langerhans 2018-06-04 22:56:11 +02:00
parent 46f94e8744
commit dbf0ccfa32
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
fusee/fusee-secondary/src/package2.c
View file

@ -98,8 +98,7 @@ static void package2_crypt_ctr(unsigned int master_key_rev, void *dst, size_t ds
se_aes_ctr_crypt(KEYSLOT_SWITCH_PACKAGE2KEY, dst, dst_size, src, src_size, ctr, ctr_size);
}
static bool package2_validate_metadata(package2_meta_t *metadata) {
package2_header_t *package2 = (package2_header_t *)((uint8_t *)metadata - offsetof(package2_header_t, metadata));
static bool package2_validate_metadata(package2_meta_t *metadata, uint8_t data[]) {
if (metadata->magic != MAGIC_PK21) {
return false;
}
@ -160,7 +159,7 @@ static bool package2_validate_metadata(package2_meta_t *metadata) {
/* Validate section hashes. */
if (metadata->section_sizes[section]) {
void *section_data = package2->data + cur_section_offset;
void *section_data = data + cur_section_offset;
uint8_t calculated_hash[0x20];
se_calculate_sha256(calculated_hash, section_data, metadata->section_sizes[section]);
if (memcmp(calculated_hash, metadata->section_hashes[section], sizeof(metadata->section_hashes[section])) != 0) {
@ -199,7 +198,7 @@ static uint32_t package2_decrypt_and_validate_header(package2_header_t *header,
/* Copy the ctr (which stores information) into the decrypted metadata. */
memcpy(metadata.ctr, header->metadata.ctr, sizeof(header->metadata.ctr));
/* See if this is the correct key. */
if (package2_validate_metadata(&metadata)) {
if (package2_validate_metadata(&metadata, header->data)) {
header->metadata = metadata;
return mkey_rev;
}
@ -209,7 +208,7 @@ static uint32_t package2_decrypt_and_validate_header(package2_header_t *header,
if (mkey_rev > mkey_get_revision()) {
fatal_error("failed to decrypt the Package2 header (master key revision %u)!\n", mkey_get_revision());
}
} else if (!package2_validate_metadata(&header->metadata)) {
} else if (!package2_validate_metadata(&header->metadata, header->data)) {
fatal_error("Failed to validate the Package2 header!\n");
}
return 0;