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se: Allow sha256 continuation without saving the msg

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CTCaer 2020-06-14 03:08:27 +03:00
parent 1c213d73c9
commit f2f995af17
2 changed files with 2 additions and 8 deletions
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5
bootloader/sec/se.c
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@ -350,11 +350,8 @@ int se_calc_sha256(void *hash, u32 *msg_left, const void *src, u32 src_size, u64
SE(SE_SHA_MSG_LEFT_3_REG_OFFSET) = 0;
// If we hash in chunks, copy over the intermediate.
if (sha_cfg == SHA_CONTINUE)
if (sha_cfg == SHA_CONTINUE && msg_left)
{
if (!msg_left)
return 0;
// Restore message left to process.
SE(SE_SHA_MSG_LEFT_0_REG_OFFSET) = msg_left[0];
SE(SE_SHA_MSG_LEFT_1_REG_OFFSET) = msg_left[1];

5
nyx/nyx_gui/sec/se.c
View file

@ -350,11 +350,8 @@ int se_calc_sha256(void *hash, u32 *msg_left, const void *src, u32 src_size, u64
SE(SE_SHA_MSG_LEFT_3_REG_OFFSET) = 0;
// If we hash in chunks, copy over the intermediate.
if (sha_cfg == SHA_CONTINUE)
if (sha_cfg == SHA_CONTINUE && msg_left)
{
if (!msg_left)
return 0;
// Restore message left to process.
SE(SE_SHA_MSG_LEFT_0_REG_OFFSET) = msg_left[0];
SE(SE_SHA_MSG_LEFT_1_REG_OFFSET) = msg_left[1];