f540a43052
Some highlights from NEWS: ** Added OpenSSL 3.0 compatibility. ** Removed OpenSSL 1.0 compatibility. ** Support for FIDO 2.1 "minPinLength" extension. ** Support for COSE_EDDSA, COSE_ES256, and COSE_RS1 attestation. ** Support for TPM 2.0 attestation. ** Support for device timeouts; see fido_dev_set_timeout(). ** New API calls: - es256_pk_from_EVP_PKEY; - fido_cred_attstmt_len; - fido_cred_attstmt_ptr; - fido_cred_pin_minlen; - fido_cred_set_attstmt; - fido_cred_set_pin_minlen; - fido_dev_set_pin_minlen_rpid; - fido_dev_set_timeout; - rs256_pk_from_EVP_PKEY. ** Reliability and portability fixes. ** Better handling of HID devices without identification strings; gh#381. Relnotes: Yes Sponsored by: The FreeBSD Foundation
100 lines
1.8 KiB
C
100 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2021 Yubico AB. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
#include <openssl/rsa.h>
|
|
#include <openssl/obj_mac.h>
|
|
|
|
#include "fido.h"
|
|
|
|
#if defined(LIBRESSL_VERSION_NUMBER)
|
|
static EVP_MD *
|
|
rs1_get_EVP_MD(void)
|
|
{
|
|
const EVP_MD *from;
|
|
EVP_MD *to = NULL;
|
|
|
|
if ((from = EVP_sha1()) != NULL && (to = malloc(sizeof(*to))) != NULL)
|
|
memcpy(to, from, sizeof(*to));
|
|
|
|
return (to);
|
|
}
|
|
|
|
static void
|
|
rs1_free_EVP_MD(EVP_MD *md)
|
|
{
|
|
freezero(md, sizeof(*md));
|
|
}
|
|
#elif OPENSSL_VERSION_NUMBER >= 0x30000000
|
|
static EVP_MD *
|
|
rs1_get_EVP_MD(void)
|
|
{
|
|
return (EVP_MD_fetch(NULL, "SHA-1", NULL));
|
|
}
|
|
|
|
static void
|
|
rs1_free_EVP_MD(EVP_MD *md)
|
|
{
|
|
EVP_MD_free(md);
|
|
}
|
|
#else
|
|
static EVP_MD *
|
|
rs1_get_EVP_MD(void)
|
|
{
|
|
const EVP_MD *md;
|
|
|
|
if ((md = EVP_sha1()) == NULL)
|
|
return (NULL);
|
|
|
|
return (EVP_MD_meth_dup(md));
|
|
}
|
|
|
|
static void
|
|
rs1_free_EVP_MD(EVP_MD *md)
|
|
{
|
|
EVP_MD_meth_free(md);
|
|
}
|
|
#endif /* LIBRESSL_VERSION_NUMBER */
|
|
|
|
int
|
|
rs1_verify_sig(const fido_blob_t *dgst, EVP_PKEY *pkey,
|
|
const fido_blob_t *sig)
|
|
{
|
|
EVP_PKEY_CTX *pctx = NULL;
|
|
EVP_MD *md = NULL;
|
|
int ok = -1;
|
|
|
|
if (EVP_PKEY_base_id(pkey) != EVP_PKEY_RSA) {
|
|
fido_log_debug("%s: EVP_PKEY_base_id", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
if ((md = rs1_get_EVP_MD()) == NULL) {
|
|
fido_log_debug("%s: rs1_get_EVP_MD", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
if ((pctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL ||
|
|
EVP_PKEY_verify_init(pctx) != 1 ||
|
|
EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PADDING) != 1 ||
|
|
EVP_PKEY_CTX_set_signature_md(pctx, md) != 1) {
|
|
fido_log_debug("%s: EVP_PKEY_CTX", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
if (EVP_PKEY_verify(pctx, sig->ptr, sig->len, dgst->ptr,
|
|
dgst->len) != 1) {
|
|
fido_log_debug("%s: EVP_PKEY_verify", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
ok = 0;
|
|
fail:
|
|
EVP_PKEY_CTX_free(pctx);
|
|
rs1_free_EVP_MD(md);
|
|
|
|
return (ok);
|
|
}
|