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s390x assembly pack: cleanse only sensitive fields

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of instruction parameter blocks.

Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10004)
This commit is contained in:
Patrick Steuer 2019-09-24 14:44:27 +02:00
parent ac037dc874
commit 2281be2ed4
1 changed files with 2 additions and 2 deletions
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4
crypto/ec/ecp_s390x_nistp.c
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@ -110,7 +110,7 @@ ret:
/* Otherwise use default. */
if (rc == -1)
rc = ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);
OPENSSL_cleanse(param, sizeof(param));
OPENSSL_cleanse(param + S390X_OFF_SCALAR(len), len);
BN_CTX_end(ctx);
BN_CTX_free(new_ctx);
return rc;
@ -203,7 +203,7 @@ static ECDSA_SIG *ecdsa_s390x_nistp_sign_sig(const unsigned char *dgst,
ok = 1;
ret:
OPENSSL_cleanse(param, sizeof(param));
OPENSSL_cleanse(param + S390X_OFF_K(len), 2 * len);
if (ok != 1) {
ECDSA_SIG_free(sig);
sig = NULL;