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all: Use bool where applicable (#30)

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Mat M 2018-02-22 22:58:39 -05:00 • committed by SciresM
parent 1d8f443f68
commit 83216409d2
15 changed files with 154 additions and 145 deletions
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10
exosphere/gcm.c
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@ -56,7 +56,7 @@ static void gf128_mul(uint8_t *dst, const uint8_t *x, const uint8_t *y) {
/* Performs an AES-GCM GHASH operation over the data into dst. */
static void ghash(void *dst, const void *data, size_t data_size, const void *j_block, int encrypt) {
static void ghash(void *dst, const void *data, size_t data_size, const void *j_block, bool encrypt) {
uint8_t x[0x10];
uint8_t h[0x10];
@ -112,7 +112,7 @@ static void ghash(void *dst, const void *data, size_t data_size, const void *j_b
/* This function is a doozy. It decrypts and validates a (non-standard) AES-GCM wrapped keypair. */
size_t gcm_decrypt_key(void *dst, size_t dst_size, const void *src, size_t src_size, const void *sealed_kek, size_t kek_size, const void *wrapped_key, size_t key_size, unsigned int usecase, int is_personalized) {
size_t gcm_decrypt_key(void *dst, size_t dst_size, const void *src, size_t src_size, const void *sealed_kek, size_t kek_size, const void *wrapped_key, size_t key_size, unsigned int usecase, bool is_personalized) {
if (is_personalized == 0) {
/* Devkit keys use a different keyformat without a MAC/Device ID. */
if (src_size <= 0x10 || src_size - 0x10 > dst_size) {
@ -132,20 +132,20 @@ size_t gcm_decrypt_key(void *dst, size_t dst_size, const void *src, size_t src_s
se_aes_ctr_crypt(KEYSLOT_SWITCH_TEMPKEY, dst, dst_size, src + 0x10, src_size - 0x10, src, 0x10);
if (is_personalized == 0) {
if (!is_personalized) {
/* Devkit non-personalized keys have no further authentication. */
return src_size - 0x10;
}
/* J = GHASH(CTR); */
uint8_t j_block[0x10];
ghash(j_block, src, 0x10, NULL, 0);
ghash(j_block, src, 0x10, NULL, false);
/* MAC = GHASH(PLAINTEXT) ^ ENCRYPT(J) */
/* Note: That MAC is calculated over plaintext is non-standard. */
/* It is supposed to be over the ciphertext. */
uint8_t calc_mac[0x10];
ghash(calc_mac, dst, src_size - 0x20, j_block, 1);
ghash(calc_mac, dst, src_size - 0x20, j_block, true);
/* Const-time memcmp. */
const uint8_t *src_bytes = src;