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Fix state handling of keccak_final for s390x.

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The digest life-cycle state diagram has been updated for XOF. Fix the
state handling in s390x_keccac_final() according to the updated state
diagram.

Signed-off-by: Holger Dengler <dengler@linux.ibm.com>

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Todd Short <todd.short@me.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22221)
This commit is contained in:
Holger Dengler 2023-09-27 15:43:18 +02:00
parent 288fbb4b71
commit 1022131d16
1 changed files with 4 additions and 0 deletions
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4
providers/implementations/digests/sha3_prov.c
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@ -235,6 +235,10 @@ static int s390x_keccakc_final(void *vctx, unsigned char *out, size_t outlen,
if (!ossl_prov_is_running())
return 0;
if (!(ctx->xof_state == XOF_STATE_INIT ||
ctx->xof_state == XOF_STATE_ABSORB))
return 0;
ctx->xof_state = XOF_STATE_FINAL;
if (outlen == 0)
return 1;
memset(ctx->buf + num, 0, bsz - num);