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#include <u.h>
#include <libc.h>
#include <oventi.h>
#include <libsec.h>
static void encode(uchar*, u32int*, ulong);
extern void vtSha1Block(u32int *s, uchar *p, ulong len);
struct VtSha1
{
DigestState *s;
};
VtSha1 *
vtSha1Alloc(void)
{
VtSha1 *s;
s = vtMemAlloc(sizeof(VtSha1));
vtSha1Init(s);
return s;
}
void
vtSha1Free(VtSha1 *s)
{
if(s == nil)
return;
if(s->s != nil)
free(s->s);
vtMemFree(s);
}
void
vtSha1Init(VtSha1 *s)
{
s->s = nil;
}
void
vtSha1Update(VtSha1 *s, uchar *p, int len)
{
s->s = sha1(p, len, nil, s->s);
}
void
vtSha1Final(VtSha1 *s, uchar *digest)
{
sha1(nil, 0, digest, s->s);
s->s = nil;
}
void
vtSha1(uchar sha1[VtScoreSize], uchar *p, int n)
{
VtSha1 s;
vtSha1Init(&s);
vtSha1Update(&s, p, n);
vtSha1Final(&s, sha1);
}
int
vtSha1Check(uchar score[VtScoreSize], uchar *p, int n)
{
VtSha1 s;
uchar score2[VtScoreSize];
vtSha1Init(&s);
vtSha1Update(&s, p, n);
vtSha1Final(&s, score2);
if(memcmp(score, score2, VtScoreSize) != 0) {
vtSetError("vtSha1Check failed");
return 0;
}
return 1;
}
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