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Internally in IOS, it uses 2 FDs: one of 0x10001 normally calculating SHA-1 hashes and 0x10002 when dealing with HMAC key hashes (also based on SHA). Despite this, it is better to do an IOS_Open when using this resource.
Internally in IOS, it uses 2 FDs: one of 0x10001 normally calculating SHA-1 hashes and 0x10002 when dealing with HMAC key hashes (also based on SHA). Despite this, it is better to do an IOS_Open when using this resource.
−/dev/sha handles both SHA-1 hashing and HMAC verification in modular IOS versions (IOS28 and later). For the monolithic IOS versions (IOS22 and earlier), HMAC verification is done in a dedicated separate device called [[:/dev/hmac]].
+/dev/sha handles both SHA-1 hashing and HMAC verification in modular IOS versions (IOS28 and later). For monolithic IOS versions (IOS22 and earlier), HMAC verification is done in a dedicated separate device called [[:/dev/hmac]].
== /dev/sha IOS_Ioctlv ==
== /dev/sha IOS_Ioctlv ==