crypto: s390/hmac - Generate intermediate CV for API partial block handling

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The API partial block handling requires a intermediate chaining
value (CV). The internal function hash_data() sets the function code
correctly, so also call cpacf_kimd() instruction for intermediate CV
generation, as cpacf_klmd() always generate the final hash value.

Cc: stable@vger.kernel.org # 6.15+
Fixes: 08811169ac ("crypto: s390/hmac - Use API partial block handling")
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Holger Dengler 2026-08-14 16:20:10 +02:00 • committed by Herbert Xu

parent 53cf0f26ee

commit 10396a2d6d

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arch/s390/crypto/hmac_s390.c

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