Padlock: fix byte swapping assembly for AES-192 and 256 #20077
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Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware. This commit correctly sets the number of swapping loops to be done. Fixes #20073 CLA: trivial
paulidale
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branch: master
hlandau
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Jan 19, 2023
hlandau
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approval: done
openssl-machine
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approval: ready to merge
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This pull request is ready to merge |
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Merged to master, 3.1, 3.0 and 1.1.1. Thank you. |
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Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware. This commit correctly sets the number of swapping loops to be done. Fixes #20073 CLA: trivial Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from #20077) (cherry picked from commit 7331e7e)
openssl-machine
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Jan 20, 2023
Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware. This commit correctly sets the number of swapping loops to be done. Fixes #20073 CLA: trivial Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from #20077) (cherry picked from commit 7331e7e)
openssl-machine
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that referenced
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Jan 20, 2023
Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware. This commit correctly sets the number of swapping loops to be done. Fixes #20073 CLA: trivial Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from #20077)
openssl-machine
pushed a commit
that referenced
this pull request
Jan 20, 2023
Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware. This commit correctly sets the number of swapping loops to be done. Fixes #20073 CLA: trivial Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from #20077) (cherry picked from commit 7331e7e)
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Byte swapping code incorrectly uses the number of AES rounds to swap expanded AES key, while swapping only a single dword in a loop, resulting in swapped key and partially swapped expanded keys, breaking AES encryption and decryption on VIA Padlock hardware.
This commit correctly sets the number of swapping loops to be done.
Fixes #20073
CLA: trivial