Coverage Report

Created: 2024-06-03 09:43

/libfido2/src/rs1.c
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Source (jump to first uncovered line)
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/*
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 * Copyright (c) 2021 Yubico AB. All rights reserved.
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 * Use of this source code is governed by a BSD-style
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 * license that can be found in the LICENSE file.
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 * SPDX-License-Identifier: BSD-2-Clause
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 */
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#include <openssl/rsa.h>
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#include <openssl/obj_mac.h>
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#include "fido.h"
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#if defined(__GNUC__)
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#define PRAGMA(s) _Pragma(s)
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#else
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#define PRAGMA(s)
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#endif
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static EVP_MD *
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rs1_get_EVP_MD(void)
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129
{
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PRAGMA("GCC diagnostic push")
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129
PRAGMA("GCC diagnostic ignored \"-Wcast-qual\"")
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129
        return ((EVP_MD *)EVP_sha1());
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129
PRAGMA("GCC diagnostic pop")
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129
}
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int
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rs1_verify_sig(const fido_blob_t *dgst, EVP_PKEY *pkey,
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    const fido_blob_t *sig)
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129
{
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        EVP_PKEY_CTX    *pctx = NULL;
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129
        EVP_MD          *md = NULL;
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129
        int              ok = -1;
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129
        if (EVP_PKEY_base_id(pkey) != EVP_PKEY_RSA) {
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0
                fido_log_debug("%s: EVP_PKEY_base_id", __func__);
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0
                goto fail;
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0
        }
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129
        if ((md = rs1_get_EVP_MD()) == NULL) {
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1
                fido_log_debug("%s: rs1_get_EVP_MD", __func__);
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1
                goto fail;
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1
        }
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128
        if ((pctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL ||
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128
            EVP_PKEY_verify_init(pctx) != 1 ||
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128
            EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PADDING) != 1 ||
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128
            EVP_PKEY_CTX_set_signature_md(pctx, md) != 1) {
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2
                fido_log_debug("%s: EVP_PKEY_CTX", __func__);
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2
                goto fail;
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2
        }
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126
        if (EVP_PKEY_verify(pctx, sig->ptr, sig->len, dgst->ptr,
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126
            dgst->len) != 1) {
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125
                fido_log_debug("%s: EVP_PKEY_verify", __func__);
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125
                goto fail;
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125
        }
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1
        ok = 0;
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129
fail:
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129
        EVP_PKEY_CTX_free(pctx);
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        return (ok);
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1
}