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silence static analysis tool warning about null parameter after sanity check

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This commit is contained in:
Jacob Barthelmeh
2017-04-13 15:32:31 -06:00
parent 620d21c850
commit ebde18af59
1 changed files with 24 additions and 8 deletions
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16
wolfcrypt/src/hmac.c
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@@ -254,7 +254,9 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
return WC_KEY_SIZE_E; return WC_KEY_SIZE_E;
} }
if (key != NULL) {
XMEMCPY(hmac->keyRaw, key, length); XMEMCPY(hmac->keyRaw, key, length);
}
hmac->keyLen = (word16)length; hmac->keyLen = (word16)length;
return 0; /* nothing to do here */ return 0; /* nothing to do here */
@@ -279,8 +281,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case MD5: case MD5:
hmac_block_size = MD5_BLOCK_SIZE; hmac_block_size = MD5_BLOCK_SIZE;
if (length <= MD5_BLOCK_SIZE) { if (length <= MD5_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Md5Update(&hmac->hash.md5, key, length); ret = wc_Md5Update(&hmac->hash.md5, key, length);
if (ret != 0) if (ret != 0)
@@ -297,8 +301,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case SHA: case SHA:
hmac_block_size = SHA_BLOCK_SIZE; hmac_block_size = SHA_BLOCK_SIZE;
if (length <= SHA_BLOCK_SIZE) { if (length <= SHA_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_ShaUpdate(&hmac->hash.sha, key, length); ret = wc_ShaUpdate(&hmac->hash.sha, key, length);
if (ret != 0) if (ret != 0)
@@ -317,8 +323,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
{ {
hmac_block_size = SHA224_BLOCK_SIZE; hmac_block_size = SHA224_BLOCK_SIZE;
if (length <= SHA224_BLOCK_SIZE) { if (length <= SHA224_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Sha224Update(&hmac->hash.sha224, key, length); ret = wc_Sha224Update(&hmac->hash.sha224, key, length);
if (ret != 0) if (ret != 0)
@@ -337,8 +345,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case SHA256: case SHA256:
hmac_block_size = SHA256_BLOCK_SIZE; hmac_block_size = SHA256_BLOCK_SIZE;
if (length <= SHA256_BLOCK_SIZE) { if (length <= SHA256_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Sha256Update(&hmac->hash.sha256, key, length); ret = wc_Sha256Update(&hmac->hash.sha256, key, length);
if (ret != 0) if (ret != 0)
@@ -357,8 +367,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case SHA384: case SHA384:
hmac_block_size = SHA384_BLOCK_SIZE; hmac_block_size = SHA384_BLOCK_SIZE;
if (length <= SHA384_BLOCK_SIZE) { if (length <= SHA384_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Sha384Update(&hmac->hash.sha384, key, length); ret = wc_Sha384Update(&hmac->hash.sha384, key, length);
if (ret != 0) if (ret != 0)
@@ -374,8 +386,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case SHA512: case SHA512:
hmac_block_size = SHA512_BLOCK_SIZE; hmac_block_size = SHA512_BLOCK_SIZE;
if (length <= SHA512_BLOCK_SIZE) { if (length <= SHA512_BLOCK_SIZE) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Sha512Update(&hmac->hash.sha512, key, length); ret = wc_Sha512Update(&hmac->hash.sha512, key, length);
if (ret != 0) if (ret != 0)
@@ -393,8 +407,10 @@ int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
case BLAKE2B_ID: case BLAKE2B_ID:
hmac_block_size = BLAKE2B_BLOCKBYTES; hmac_block_size = BLAKE2B_BLOCKBYTES;
if (length <= BLAKE2B_BLOCKBYTES) { if (length <= BLAKE2B_BLOCKBYTES) {
if (key != NULL) {
XMEMCPY(ip, key, length); XMEMCPY(ip, key, length);
} }
}
else { else {
ret = wc_Blake2bUpdate(&hmac->hash.blake2b, key, length); ret = wc_Blake2bUpdate(&hmac->hash.blake2b, key, length);
if (ret != 0) if (ret != 0)