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make sure chacha_crypt() can only be called after setting the IV

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This commit is contained in:
Steffen Jaeckel 2017-09-21 16:03:03 +02:00
parent 342a10cc14
commit da4f854329
1 changed files with 5 additions and 3 deletions
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2
src/stream/chacha/chacha_crypt.c
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@ -57,9 +57,11 @@ int chacha_crypt(chacha_state *st, const unsigned char *in, unsigned long inlen,
unsigned long i, j; unsigned long i, j;
if (inlen == 0) return CRYPT_OK; /* nothing to do */ if (inlen == 0) return CRYPT_OK; /* nothing to do */
LTC_ARGCHK(st != NULL); LTC_ARGCHK(st != NULL);
LTC_ARGCHK(in != NULL); LTC_ARGCHK(in != NULL);
LTC_ARGCHK(out != NULL); LTC_ARGCHK(out != NULL);
LTC_ARGCHK(st->ivlen != 0);
if (st->ksleft > 0) { if (st->ksleft > 0) {
j = MIN(st->ksleft, inlen); j = MIN(st->ksleft, inlen);