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fallback in software imp if callback not supporting operation ie: NULL salt

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Saksik Remy
2021-12-20 17:34:27 +08:00
parent d1f850273f
commit 93712fcfbd
1 changed files with 5 additions and 0 deletions
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5
src/tls13.c
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@@ -860,6 +860,11 @@ static int Tls13_HKDF_Extract(WOLFSSL *ssl, byte* prk, const byte* salt, int sal
CallbackHKDFExtract cb = ssl->ctx->HkdfExtractCb; CallbackHKDFExtract cb = ssl->ctx->HkdfExtractCb;
if (cb != NULL) { if (cb != NULL) {
ret = cb(prk, salt, saltLen, ikm, ikmLen, digest, cb_ctx); ret = cb(prk, salt, saltLen, ikm, ikmLen, digest, cb_ctx);
if(ret == NOT_COMPILED_IN)
{
WOLFSSL_MSG("Not supported by callback, fallback to software implementation");
ret = wc_Tls13_HKDF_Extract(prk, salt, saltLen, ikm, ikmLen, digest);
}
} }
else else
#endif #endif