s390/crypto: Postpone the key split to key conversion

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Store the input key material of paes-xts in a single key_blob
structure. The split of the input key material is postponed to the key
conversion. Split the key material only, if the returned protected
keytype requires a second protected key.

For clear key pairs, prepare a clearkey token for each key and convert
them separately to protected keys. Store the concatenated conversion
results as input key in the context. All other input keys are stored
as is.

Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Holger Dengler 2024-10-25 17:12:48 +02:00 • committed by Heiko Carstens

parent 20a5f640ca

commit f4d3cf6b8b

1 changed files with 74 additions and 25 deletions

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arch/s390/crypto/paes_s390.c

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