void SHA1_Update(void *c_opaque, const REBYTE *data, REBCNT len)
{
SHA_CTX *c = (SHA_CTX*)c_opaque;
ULONG *p;
int ew,ec,sw,sc;
ULONG l;
if (len == 0) return;
l=(c->Nl+((SHA_LONG)len<<3))&(SHA_LONG)-1;
if (l < c->Nl) /* overflow */
c->Nh++;
c->Nh+=(len>>29);
c->Nl=l;
if (c->num != 0)
{
p=c->data;
sw=c->num>>2;
sc=c->num&0x03;
if ((c->num+len) >= SHA_CBLOCK)
{
l= p[sw];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw<SHA_LBLOCK; sw++)
{
M_c2nl(data,l);
p[sw]=l;
}
len-=(SHA_CBLOCK-c->num);
sha1_block(c,p,64);
c->num=0;
/* drop through and do the rest */
}
else
{
c->num+=(int)len;
if ((sc+len) < 4) /* ugly, add char's to a word */
{
l= p[sw];
M_p_c2nl_p(data,l,sc,len);
p[sw]=l;
}
else
{
ew=(c->num>>2);
ec=(c->num&0x03);
l= p[sw];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw < ew; sw++)
{ M_c2nl(data,l); p[sw]=l; }
if (ec)
{
M_c2nl_p(data,l,ec);
p[sw]=l;
}
}
return;
}
}
void
SHA_Update(SHA_CTX *c, const void *in, size_t len)
{
u_int32_t *p;
int ew,ec,sw,sc;
u_int32_t l;
const unsigned char *data = in;
if (len == 0) return;
l=(c->Nl+(len<<3))&0xffffffffL;
if (l < c->Nl) /* overflow */
c->Nh++;
c->Nh+=(len>>29);
c->Nl=l;
if (c->num != 0)
{
p=c->data;
sw=c->num>>2;
sc=c->num&0x03;
if ((c->num+len) >= SHA_CBLOCK)
{
l= p[sw];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw<SHA_LBLOCK; sw++)
{
M_c2nl(data,l);
p[sw]=l;
}
len-=(SHA_CBLOCK-c->num);
sha_block(c,p,64);
c->num=0;
/* drop through and do the rest */
}
else
{
c->num+=(int)len;
if ((sc+len) < 4) /* ugly, add char's to a word */
{
l= p[sw];
M_p_c2nl_p(data,l,sc,len);
p[sw]=l;
}
else
{
ew=(c->num>>2);
ec=(c->num&0x03);
l= p[sw];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw < ew; sw++)
{ M_c2nl(data,l); p[sw]=l; }
if (ec)
{
M_c2nl_p(data,l,ec);
p[sw]=l;
}
}
return;
}
}