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fix for size of buffer when reading fast-rsa BN data

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This commit is contained in:
Jacob Barthelmeh 2016-01-14 15:00:59 -07:00
parent df0d2e8c3a
commit 3347bea0d5
1 changed files with 3 additions and 3 deletions
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6
wolfcrypt/user-crypto/src/rsa.c
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@ -2353,7 +2353,7 @@ static int SetRsaPublicKey(byte* output, RsaKey* key,
if ( (nSz + rawLen) < MAX_RSA_INT_SZ) {
if (leadingBit)
n[nSz] = 0;
err = ippsGetOctString_BN((Ipp8u*)n + nSz, rawLen, key->n);
err = ippsGetOctString_BN((Ipp8u*)n + nSz, rawLen - leadingBit, key->n);
if (err == ippStsNoErr)
nSz += rawLen;
else {
@ -2394,7 +2394,7 @@ static int SetRsaPublicKey(byte* output, RsaKey* key,
if ( (eSz + rawLen) < MAX_RSA_E_SZ) {
if (leadingBit)
e[eSz] = 0;
err = ippsGetOctString_BN((Ipp8u*)e + eSz, rawLen, key->e);
err = ippsGetOctString_BN((Ipp8u*)e + eSz, rawLen - leadingBit, key->e);
if (err == ippStsNoErr)
eSz += rawLen;
else {
@ -2587,7 +2587,7 @@ int wc_RsaKeyToDer(RsaKey* key, byte* output, word32 inLen)
/* extract data*/
err = ippsGetOctString_BN((Ipp8u*)(tmps[i] + sizes[i]),
rawLen, keyInt);
rawLen - lbit, keyInt);
if (err == ippStsOk) {
sizes[i] += (rawLen-lbit); /* lbit included in rawLen */
intTotalLen += sizes[i];