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hpke.c: use xorbufout in wc_HpkeContextComputeNonce

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This commit is contained in:
Juliusz Sosinowicz
2023-03-31 12:18:10 +02:00
parent 3c57228197
commit bed99401a0
1 changed files with 8 additions and 4 deletions
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12
wolfcrypt/src/hpke.c
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@ -43,6 +43,13 @@
#include <wolfssl/wolfcrypt/aes.h> #include <wolfssl/wolfcrypt/aes.h>
#include <wolfssl/wolfcrypt/hpke.h> #include <wolfssl/wolfcrypt/hpke.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
const int hpkeSupportedKem[HPKE_SUPPORTED_KEM_LEN] = { const int hpkeSupportedKem[HPKE_SUPPORTED_KEM_LEN] = {
DHKEM_P256_HKDF_SHA256, DHKEM_P256_HKDF_SHA256,
DHKEM_P384_HKDF_SHA384, DHKEM_P384_HKDF_SHA384,
@ -581,7 +588,6 @@ static int wc_HpkeLabeledExpand(Hpke* hpke, byte* suite_id, word32 suite_id_len,
static int wc_HpkeContextComputeNonce(Hpke* hpke, HpkeBaseContext* context, static int wc_HpkeContextComputeNonce(Hpke* hpke, HpkeBaseContext* context,
byte* out) byte* out)
{ {
int i;
int ret; int ret;
byte seq_bytes[HPKE_Nn_MAX]; byte seq_bytes[HPKE_Nn_MAX];
@ -589,9 +595,7 @@ static int wc_HpkeContextComputeNonce(Hpke* hpke, HpkeBaseContext* context,
* nonce */ * nonce */
ret = I2OSP(context->seq, hpke->Nn, seq_bytes); ret = I2OSP(context->seq, hpke->Nn, seq_bytes);
if (ret == 0) { if (ret == 0) {
for (i = 0; i < (int)hpke->Nn; i++) { xorbufout(out, context->base_nonce, seq_bytes, hpke->Nn);
out[i] = (context->base_nonce[i] ^ seq_bytes[i]);
}
} }
return ret; return ret;