Subversion Repositories planix.SVN

#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;
}