int mac_main(int argc, char **argv)
{
int ret = 1;
char *prog;
const EVP_MAC *mac = NULL;
OPTION_CHOICE o;
EVP_MAC_CTX *ctx = NULL;
STACK_OF(OPENSSL_STRING) *opts = NULL;
unsigned char *buf = NULL;
size_t len;
int i;
BIO *in = NULL, *out = NULL;
const char *outfile = NULL;
const char *infile = NULL;
int out_bin = 0;
int inform = FORMAT_BINARY;
prog = opt_init(argc, argv, mac_options);
buf = app_malloc(BUFSIZE, "I/O buffer");
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto err;
case OPT_HELP:
opt_help(mac_options);
ret = 0;
goto err;
case OPT_BIN:
out_bin = 1;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_MACOPT:
if (opts == NULL)
opts = sk_OPENSSL_STRING_new_null();
if (opts == NULL || !sk_OPENSSL_STRING_push(opts, opt_arg()))
goto opthelp;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argc != 1) {
BIO_printf(bio_err, "Invalid number of extra arguments\n");
goto opthelp;
}
mac = EVP_get_macbyname(argv[0]);
if (mac == NULL) {
BIO_printf(bio_err, "Invalid MAC name %s\n", argv[0]);
goto opthelp;
}
ctx = EVP_MAC_CTX_new(mac);
if (ctx == NULL)
goto err;
if (opts != NULL) {
for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) {
char *opt = sk_OPENSSL_STRING_value(opts, i);
if (mac_ctrl_string(ctx, opt) <= 0) {
BIO_printf(bio_err, "MAC parameter error '%s'\n", opt);
ERR_print_errors(bio_err);
goto err;
}
}
}
/* Use text mode for stdin */
if (infile == NULL || strcmp(infile, "-") == 0)
inform = FORMAT_TEXT;
in = bio_open_default(infile, 'r', inform);
if (in == NULL)
goto err;
out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
if (out == NULL)
goto err;
if (!EVP_MAC_init(ctx)) {
BIO_printf(bio_err, "EVP_MAC_Init failed\n");
goto err;
}
for (;;) {
i = BIO_read(in, (char *)buf, BUFSIZE);
if (i < 0) {
BIO_printf(bio_err, "Read Error in '%s'\n", infile);
goto err;
}
if (i == 0)
break;
if (!EVP_MAC_update(ctx, buf, i)) {
BIO_printf(bio_err, "EVP_MAC_update failed\n");
goto err;
}
}
if (!EVP_MAC_final(ctx, NULL, &len)) {
BIO_printf(bio_err, "EVP_MAC_final failed\n");
goto err;
}
if (len > BUFSIZE) {
BIO_printf(bio_err, "output len is too large\n");
goto err;
}
if (!EVP_MAC_final(ctx, buf, &len)) {
BIO_printf(bio_err, "EVP_MAC_final failed\n");
goto err;
}
if (out_bin) {
BIO_write(out, buf, len);
} else {
if (outfile == NULL)
BIO_printf(out,"\n");
for (i = 0; i < (int)len; ++i)
BIO_printf(out, "%02X", buf[i]);
if (outfile == NULL)
BIO_printf(out,"\n");
}
ret = 0;
err:
if (ret != 0)
ERR_print_errors(bio_err);
OPENSSL_clear_free(buf, BUFSIZE);
sk_OPENSSL_STRING_free(opts);
BIO_free(in);
BIO_free(out);
EVP_MAC_CTX_free(ctx);
return ret;
}
static int pkey_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
MAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
switch (type) {
case EVP_PKEY_CTRL_CIPHER:
switch (hctx->type) {
case MAC_TYPE_RAW:
return -2; /* The raw types don't support ciphers */
case MAC_TYPE_MAC:
{
int rv;
if ((rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_ENGINE,
ctx->engine)) < 0
|| (rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_CIPHER,
p2)) < 0
|| !(rv = EVP_MAC_init(hctx->ctx)))
return rv;
}
break;
default:
/* This should be dead code */
return 0;
}
break;
case EVP_PKEY_CTRL_MD:
switch (hctx->type) {
case MAC_TYPE_RAW:
hctx->raw_data.md = p2;
break;
case MAC_TYPE_MAC:
if (ctx->pkey != NULL
&& !EVP_MAC_CTX_copy(hctx->ctx,
(EVP_MAC_CTX *)ctx->pkey->pkey.ptr))
return 0;
if (!EVP_MAC_init(hctx->ctx))
return 0;
break;
default:
/* This should be dead code */
return 0;
}
break;
case EVP_PKEY_CTRL_SET_DIGEST_SIZE:
return EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_SIZE, (size_t)p1);
case EVP_PKEY_CTRL_SET_MAC_KEY:
switch (hctx->type) {
case MAC_TYPE_RAW:
if ((!p2 && p1 > 0) || (p1 < -1))
return 0;
if (!ASN1_OCTET_STRING_set(&hctx->raw_data.ktmp, p2, p1))
return 0;
break;
case MAC_TYPE_MAC:
if (!EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_KEY, p2, p1))
return 0;
break;
default:
/* This should be dead code */
return 0;
}
break;
case EVP_PKEY_CTRL_DIGESTINIT:
switch (hctx->type) {
case MAC_TYPE_RAW:
/* Ensure that we have attached the implementation */
if (!EVP_MAC_init(hctx->ctx))
return 0;
{
int rv;
ASN1_OCTET_STRING *key =
(ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
if ((rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_ENGINE,
ctx->engine)) < 0
|| (rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_MD,
hctx->raw_data.md)) < 0
|| (rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_KEY,
key->data, key->length)) < 0)
return rv;
}
break;
case MAC_TYPE_MAC:
return -2; /* The mac types don't support ciphers */
default:
/* This should be dead code */
return 0;
}
break;
default:
return -2;
}
return 1;
}
