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Merge pull request #256 from JacobBarthelmeh/fast-rsa

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fix for size of buffer when reading fast-rsa BN data
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toddouska
2016-01-15 15:47:57 -08:00
parent 014b849af4 3347bea0d5
commit 1ab9f19541
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 ( (nSz + rawLen) < MAX_RSA_INT_SZ) {
if (leadingBit) if (leadingBit)
n[nSz] = 0; 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) if (err == ippStsNoErr)
nSz += rawLen; nSz += rawLen;
else { else {
@@ -2394,7 +2394,7 @@ static int SetRsaPublicKey(byte* output, RsaKey* key,
if ( (eSz + rawLen) < MAX_RSA_E_SZ) { if ( (eSz + rawLen) < MAX_RSA_E_SZ) {
if (leadingBit) if (leadingBit)
e[eSz] = 0; 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) if (err == ippStsNoErr)
eSz += rawLen; eSz += rawLen;
else { else {
@@ -2587,7 +2587,7 @@ int wc_RsaKeyToDer(RsaKey* key, byte* output, word32 inLen)
/* extract data*/ /* extract data*/
err = ippsGetOctString_BN((Ipp8u*)(tmps[i] + sizes[i]), err = ippsGetOctString_BN((Ipp8u*)(tmps[i] + sizes[i]),
rawLen, keyInt); rawLen - lbit, keyInt);
if (err == ippStsOk) { if (err == ippStsOk) {
sizes[i] += (rawLen-lbit); /* lbit included in rawLen */ sizes[i] += (rawLen-lbit); /* lbit included in rawLen */
intTotalLen += sizes[i]; intTotalLen += sizes[i];