ref: 9b874fb5cb093713f4850c922936cc1d04378303
dir: /sys/src/liboventi/plan9-sha1.c/
#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; }