sbase/util/crypt.c

56 lines
985 B
C

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "../util.h"
#include "../crypt.h"
int
cryptmain(int argc, char *argv[],
struct crypt_ops *ops, uint8_t *md, size_t sz)
{
FILE *fp;
if (argc == 0) {
cryptsum(ops, stdin, "<stdin>", md);
mdprint(md, "<stdin>", sz);
} else {
for (; argc > 0; argc--) {
if ((fp = fopen(*argv, "r")) == NULL)
eprintf("fopen %s:", *argv);
cryptsum(ops, fp, *argv, md);
mdprint(md, *argv, sz);
fclose(fp);
argv++;
}
}
return 0;
}
int
cryptsum(struct crypt_ops *ops, FILE *fp, const char *f,
uint8_t *md)
{
unsigned char buf[BUFSIZ];
size_t n;
ops->init(ops->s);
while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
ops->update(ops->s, buf, n);
if (ferror(fp)) {
eprintf("%s: read error:", f);
return 1;
}
ops->sum(ops->s, md);
return 0;
}
void
mdprint(const uint8_t *md, const char *f, size_t len)
{
size_t i;
for (i = 0; i < len; i++)
printf("%02x", md[i]);
printf(" %s\n", f);
}