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This commit is contained in:
Tesfa Mael
2020-05-07 13:39:53 -07:00
parent 2ab478f8fd
commit b39e384cfd
1 changed files with 4 additions and 4 deletions
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8
wolfcrypt/src/hmac.c
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@@ -1215,12 +1215,12 @@ int wolfSSL_GetHmacMaxSize(void)
word32 outIdx = 0; word32 outIdx = 0;
word32 hashSz = wc_HmacSizeByType(type); word32 hashSz = wc_HmacSizeByType(type);
byte n = 0x1; byte n = 0x1;
word32 N = 0; /* rf5869: N = ceil(L/HashLen)*/
N = (outSz/hashSz) + ((outSz % hashSz) != 0); /* RFC 5869 states that the length of output keying material in
octets must be L <= 255*HashLen or N = ceil(L/HashLen) */
if (out == NULL || N > 255) if (out == NULL || ((outSz/hashSz) + ((outSz % hashSz) != 0)) > 255)
return BAD_FUNC_ARG; return BAD_FUNC_ARG;
ret = wc_HmacInit(&myHmac, NULL, INVALID_DEVID); ret = wc_HmacInit(&myHmac, NULL, INVALID_DEVID);
if (ret != 0) if (ret != 0)