2,939
edits
Changes
no edit summary
On boot, every crypto register has an ACL value of 0x1F.
On boot, every crypto register has an ACL value of 0x1F.
In HS mode, [[#STORE|STORE]] can always write to a crypto register and resets its ACL value back to 0x1F. In NS mode, [[#STORE|STORE]] can only write to a crypto register if it has the [[#Insecure Writeable|Insecure Writeable]] access mode.
In HS mode, [[#STORE|STORE]] can always write to a crypto register. In NS and LS modes, [[#STORE|STORE]] can only write to a crypto register if it has the [[#Insecure Writeable|Insecure Writeable]] access mode.
In HS mode, [[#LOAD|LOAD]] can only retrieve a crypto register's value if it has the [[#Secure Readable|Secure Readable]] access mode. In NS mode, [[#LOAD|LOAD]] can only retrieve a crypto register's value if it has the [[#Insecure Readable|Insecure Readable]] and [[#Secure Readable|Secure Readable]] access modes.
In HS mode, [[#LOAD|LOAD]] can only retrieve a crypto register's value if it has the [[#Secure Readable|Secure Readable]] access mode. In NS and LS modes, [[#LOAD|LOAD]] can only retrieve a crypto register's value if it has the [[#Insecure Readable|Insecure Readable]] and [[#Secure Readable|Secure Readable]] access modes.
Loading a secret into a crypto register sets a per-secret ACL, unconditionally.
Loading a secret into a crypto register sets a per-secret ACL, unconditionally.
==== Insecure Keyable ====
==== Insecure Keyable ====
Controls if a crypto register can be used as key in NS mode.
Controls if a crypto register can be used as key in NS and LS modes.
Forced set if the crypto register has [[#Secure Readable|Insecure Readable]] access. This access mode cannot be set if the crypto register doesn't have [[#Secure Keyable|Secure Keyable]] access.
Forced set if the crypto register has [[#Secure Readable|Insecure Readable]] access. This access mode cannot be set if the crypto register doesn't have [[#Secure Keyable|Secure Keyable]] access.
==== Insecure Readable ====
==== Insecure Readable ====
Controls if a crypto register can be read in NS mode.
Controls if a crypto register can be read in NS and LS modes.
This access mode cannot be set if the crypto register doesn't have [[#Secure Keyable|Secure Readable]] access.
This access mode cannot be set if the crypto register doesn't have [[#Secure Keyable|Secure Readable]] access.
==== Insecure Writeable ====
==== Insecure Writeable ====
Controls if a crypto register can be written to in NS mode.
Controls if a crypto register can be written to in NS and LS modes.
This access mode has no effect in HS mode.
This access mode has no effect in HS mode.