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CRYPTO_gcm128_decrypt: fix mac or tag calculation

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The incorrect code is in #ifdef branch that is normally
not compiled in.

Signed-off-by: Zhang Jinde <zjd5536@163.com>

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12968)
This commit is contained in:
Zhang Jinde 2020-09-24 14:48:28 +08:00 committed by Tomas Mraz
parent 3352dc185f
commit 1d724b5e82
1 changed files with 2 additions and 2 deletions
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4
crypto/modes/gcm128.c
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@ -1359,8 +1359,8 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
else
ctx->Yi.d[3] = ctr;
for (i = 0; i < 16 / sizeof(size_t); ++i) {
size_t c = in[i];
out[i] = c ^ ctx->EKi.t[i];
size_t c = in_t[i];
out_t[i] = c ^ ctx->EKi.t[i];
ctx->Xi.t[i] ^= c;
}
GCM_MUL(ctx);