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exo2: implement the rest of cpu suspend (security checks TODO)

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Michael Scire 2020-06-08 00:41:27 -07:00 • committed by SciresM
parent 34098f7215
commit 2fb363dcf0
12 changed files with 384 additions and 8 deletions
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39
libraries/libexosphere/source/se/se_aes.cpp
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@ -277,6 +277,37 @@ namespace ams::se {
GetCmacResult(SE, dst, dst_size);
}
void EncryptAesCbc(void *dst, size_t dst_size, int slot, const void *src, size_t src_size, const void *iv, size_t iv_size, AesMode mode) {
/* If nothing to encrypt, succeed. */
if (src_size == 0) { return; }
/* Validate input. */
AMS_ABORT_UNLESS(iv_size == AesBlockSize);
AMS_ABORT_UNLESS(0 <= slot && slot < AesKeySlotCount);
/* Get the engine. */
auto *SE = GetRegisters();
/* Determine extents. */
const size_t num_blocks = src_size / AesBlockSize;
const size_t aligned_size = num_blocks * AesBlockSize;
AMS_ABORT_UNLESS(src_size == aligned_size);
/* Configure for aes-cbc encryption. */
SetConfig(SE, true, SE_CONFIG_DST_MEMORY);
SetAesConfig(SE, slot, true, AesConfigCbcEncrypt);
UpdateAesMode(SE, mode);
/* Set the iv. */
SetAesKeyIv(SE, slot, iv, iv_size);
/* Set the block count. */
SetBlockCount(SE, num_blocks);
/* Execute the operation. */
ExecuteOperation(SE, SE_OPERATION_OP_START, dst, dst_size, src, aligned_size);
}
void ComputeAes128Async(u32 out_ll_address, int slot, u32 in_ll_address, u32 size, DoneHandler handler, u32 config, bool encrypt, volatile SecurityEngineRegisters *SE) {
/* If nothing to decrypt, succeed. */
if (size == 0) { return; }
@ -448,6 +479,14 @@ namespace ams::se {
return ComputeAesCmac(dst, dst_size, slot, src, src_size, AesMode_Aes256);
}
void EncryptAes128Cbc(void *dst, size_t dst_size, int slot, const void *src, size_t src_size, const void *iv, size_t iv_size) {
return EncryptAesCbc(dst, dst_size, slot, src, src_size, iv, iv_size, AesMode_Aes128);
}
void EncryptAes256Cbc(void *dst, size_t dst_size, int slot, const void *src, size_t src_size, const void *iv, size_t iv_size) {
return EncryptAesCbc(dst, dst_size, slot, src, src_size, iv, iv_size, AesMode_Aes256);
}
void EncryptAes128CbcAsync(u32 out_ll_address, int slot, u32 in_ll_address, u32 size, const void *iv, size_t iv_size, DoneHandler handler) {
/* Validate the iv. */
AMS_ABORT_UNLESS(iv_size == AesBlockSize);