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/* See LICENSE file for copyright and license details. */
#include "crypt.h"
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libar2simplified.h>
#include <libar2.h>
extern char *argv0;
char *
key2root_crypt(char *msg, size_t msglen, const char *paramstr, int autoerase)
{
struct libar2_argon2_parameters *params = NULL;
char *end, *ret = NULL, *hash = NULL;
size_t size;
struct libar2_context ctx;
libar2simplified_init_context(&ctx);
ctx.autoerase_message = (unsigned char)autoerase;
if (!paramstr)
paramstr = libar2simplified_recommendation(0);
params = libar2simplified_decode_r(paramstr, NULL, &end, NULL, NULL);
if (!params) {
fprintf(stderr, "%s: libar2simplified_decode_r %s: %s\n", argv0, paramstr, strerror(errno));
return NULL;
}
if (*end) {
fprintf(stderr, "%s: libar2simplified_decode_r %s: excess data at end parameter string: %s\n", argv0, paramstr, end);
goto out;
}
size = libar2_hash_buf_size(params);
if (!size)
abort();
if (!size || !(hash = malloc(size))) {
fprintf(stderr, "%s: malloc %zu: %s\n", argv0, size, strerror(errno));
goto out;
}
if (libar2_hash(hash, msg, msglen, params, &ctx)) {
if (autoerase)
libar2_erase(msg, msglen);
fprintf(stderr, "%s: libar2simplified_hash %s: %s\n", argv0, paramstr, strerror(errno));
goto out;
}
ret = libar2simplified_encode(params, hash);
out:
if (params) {
libar2_erase(params->salt, params->saltlen);
free(params);
}
free(hash);
return ret;
}
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