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Fix for RSA _ifc_pairwise_consistency_test to make the async blocking.

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This commit is contained in:
David Garske
2021-10-12 08:13:01 -07:00
committed by Daniel Pouzzner
parent e61d88657d
commit 3fcdcbc1f9
1 changed files with 17 additions and 19 deletions
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36
wolfcrypt/src/rsa.c
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@ -616,9 +616,6 @@ static int _ifc_pairwise_consistency_test(RsaKey* key, WC_RNG* rng)
byte* plain;
int ret = 0;
word32 msgLen, plainLen, sigLen;
#ifdef WOLFSSL_ASYNC_CRYPT
word32 saved_async_marker;
#endif
msgLen = (word32)XSTRLEN(msg);
sigLen = wc_RsaEncryptSize(key);
@ -632,24 +629,29 @@ static int _ifc_pairwise_consistency_test(RsaKey* key, WC_RNG* rng)
plain = sig;
#ifdef WOLFSSL_ASYNC_CRYPT
/* force blocking calculations. */
saved_async_marker = key->asyncDev.marker;
key->asyncDev.marker = WOLFSSL_ASYNC_MARKER_INVALID;
/* Do blocking async calls here, caller does not support WC_PENDING_E */
do {
if (ret == WC_PENDING_E)
ret = wc_AsyncWait(ret, &key->asyncDev, WC_ASYNC_FLAG_CALL_AGAIN);
if (ret >= 0)
#endif
ret = wc_RsaSSL_Sign((const byte*)msg, msgLen, sig, sigLen, key, rng);
ret = wc_RsaSSL_Sign((const byte*)msg, msgLen, sig, sigLen, key, rng);
#ifdef WOLFSSL_ASYNC_CRYPT
if (ret == WC_PENDING_E) {
ret = wc_AsyncWait(ret, &key->asyncDev, WC_ASYNC_FLAG_CALL_AGAIN);
}
} while (ret == WC_PENDING_E);
#endif
if (ret > 0) {
sigLen = (word32)ret;
ret = wc_RsaSSL_VerifyInline(sig, sigLen, &plain, key);
#ifdef WOLFSSL_ASYNC_CRYPT
if (ret == WC_PENDING_E) {
ret = wc_AsyncWait(ret, &key->asyncDev, WC_ASYNC_FLAG_CALL_AGAIN);
}
/* Do blocking async calls here, caller does not support WC_PENDING_E */
do {
if (ret == WC_PENDING_E)
ret = wc_AsyncWait(ret, &key->asyncDev, WC_ASYNC_FLAG_CALL_AGAIN);
if (ret >= 0)
#endif
ret = wc_RsaSSL_VerifyInline(sig, sigLen, &plain, key);
#ifdef WOLFSSL_ASYNC_CRYPT
} while (ret == WC_PENDING_E);
#endif
}
@ -664,10 +666,6 @@ static int _ifc_pairwise_consistency_test(RsaKey* key, WC_RNG* rng)
ForceZero(sig, sigLen);
XFREE(sig, NULL, DYNAMIC_TYPE_RSA);
#ifdef WOLFSSL_ASYNC_CRYPT
key->asyncDev.marker = saved_async_marker;
#endif
return ret;
}