examples/fips_validation/fips_validation_gcm.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Intel Corporation
 */

#include <string.h>
#include <time.h>
#include <stdio.h>

#include <rte_cryptodev.h>
#include <rte_malloc.h>

#include "fips_validation.h"

#define NEW_LINE_STR    "#"
#define OP_STR      "GCM "

#define PARAM_PREFIX    "["
#define KEYLEN_STR  "Keylen = "
#define IVLEN_STR   "IVlen = "
#define PTLEN_STR   "PTlen = "
#define AADLEN_STR  "AADlen = "
#define TAGLEN_STR  "Taglen = "

#define COUNT_STR   "Count = "
#define KEY_STR     "Key = "
#define IV_STR      "IV = "
#define PT_STR      "PT = "
#define CT_STR      "CT = "
#define TAG_STR     "Tag = "
#define AAD_STR     "AAD = "

#define OP_ENC_STR  "Encrypt"
#define OP_DEC_STR  "Decrypt"
/* External/Internal IV generation, specified in file name, following NIST
 * GCMVS Section 6.1
 */
#define OP_ENC_EXT_STR  "ExtIV"
#define OP_ENC_INT_STR  "IntIV"

#define NEG_TEST_STR    "FAIL"

static int
parser_read_gcm_pt_len(const char *key, char *src,
        __rte_unused struct fips_val *val)
{
    int ret = parser_read_uint32_bit_val(key, src, &vec.pt);

    if (ret < 0)
        return ret;

    if (vec.pt.len == 0) {
        info.interim_info.gcm_data.is_gmac = 1;
        test_ops.prepare_op = prepare_auth_op;
        test_ops.prepare_xform = prepare_gmac_xform;
    } else {
        info.interim_info.gcm_data.is_gmac = 0;
        test_ops.prepare_op = prepare_aead_op;
        test_ops.prepare_xform = prepare_gcm_xform;
    }

    return ret;
}

static int
parse_gcm_aad_str(const char *key, char *src,
        __rte_unused struct fips_val *val)
{
    /* For GMAC test vector, AAD is treated as input */
    if (info.interim_info.gcm_data.is_gmac) {
        vec.pt.len = vec.aead.aad.len;
        return parse_uint8_known_len_hex_str(key, src, &vec.pt);
    } else /* gcm */
        return parse_uint8_known_len_hex_str(key, src, &vec.aead.aad);
}

static int
parse_gcm_pt_ct_str(const char *key, char *src, struct fips_val *val)
{
    /* According to NIST GCMVS section 6.1, IUT should generate IV data */
    if (info.interim_info.gcm_data.gen_iv && vec.iv.len) {
        uint32_t i;

        if (!vec.iv.val) {
            vec.iv.val = rte_malloc(0, vec.iv.len, 0);
            if (!vec.iv.val)
                return -ENOMEM;
        }

        for (i = 0; i < vec.iv.len; i++) {
            int random = rand();
            vec.iv.val[i] = (uint8_t)random;
        }
    }

    /* if PTlen == 0, pt or ct will be handled by AAD later */
    if (info.interim_info.gcm_data.is_gmac)
        return 0;

    return parse_uint8_known_len_hex_str(key, src, val);
}

struct fips_test_callback gcm_dec_vectors[] = {
        {KEY_STR, parse_uint8_known_len_hex_str, &vec.aead.key},
        {IV_STR, parse_uint8_known_len_hex_str, &vec.iv},
        {CT_STR, parse_gcm_pt_ct_str, &vec.ct},
        {AAD_STR, parse_gcm_aad_str, &vec.aead.aad},
        {TAG_STR, parse_uint8_known_len_hex_str,
                &vec.aead.digest},
        {NULL, NULL, NULL} 
};

struct fips_test_callback gcm_interim_vectors[] = {
        {KEYLEN_STR, parser_read_uint32_bit_val, &vec.aead.key},
        {IVLEN_STR, parser_read_uint32_bit_val, &vec.iv},
        {PTLEN_STR, parser_read_gcm_pt_len, &vec.pt},
        {PTLEN_STR, parser_read_uint32_bit_val, &vec.ct},
        {AADLEN_STR, parser_read_uint32_bit_val, &vec.aead.aad},
        {TAGLEN_STR, parser_read_uint32_bit_val,
                &vec.aead.digest},
        {NULL, NULL, NULL} 
};

struct fips_test_callback gcm_enc_vectors[] = {
        {KEY_STR, parse_uint8_known_len_hex_str, &vec.aead.key},
        {IV_STR, parse_uint8_known_len_hex_str, &vec.iv},
        {PT_STR, parse_gcm_pt_ct_str, &vec.pt},
        {AAD_STR, parse_gcm_aad_str, &vec.aead.aad},
        {NULL, NULL, NULL} 
};

static int
parse_test_gcm_writeback(struct fips_val *val)
{
    struct fips_val tmp_val;

    if (info.op == FIPS_TEST_ENC_AUTH_GEN) {
        /* According to NIST GCMVS section 6.1, IUT should provide
         * generate IV data
         */
        if (info.interim_info.gcm_data.gen_iv) {
            fprintf(info.fp_wr, "%s", IV_STR);
            tmp_val.val = vec.iv.val;
            tmp_val.len = vec.iv.len;

            parse_write_hex_str(&tmp_val);
            rte_free(vec.iv.val);
            vec.iv.val = NULL;
        }

        fprintf(info.fp_wr, "%s", CT_STR);

        if (!info.interim_info.gcm_data.is_gmac) {
            tmp_val.val = val->val;
            tmp_val.len = vec.pt.len;

            parse_write_hex_str(&tmp_val);
        } else
            fprintf(info.fp_wr, "\n");

        fprintf(info.fp_wr, "%s", TAG_STR);

        tmp_val.val = val->val + vec.pt.len;
        tmp_val.len = val->len - vec.pt.len;

        parse_write_hex_str(&tmp_val);
    } else {
        if (vec.status == RTE_CRYPTO_OP_STATUS_SUCCESS) {
            fprintf(info.fp_wr, "%s", PT_STR);
            if (!info.interim_info.gcm_data.is_gmac) {
                tmp_val.val = val->val;
                tmp_val.len = vec.pt.len;

                parse_write_hex_str(&tmp_val);
            } else
                fprintf(info.fp_wr, "\n");
        } else
            fprintf(info.fp_wr, "%s\n", NEG_TEST_STR);
    }

    return 0;
}

int
parse_test_gcm_init(void)
{
    char *tmp;
    uint32_t i;


    for (i = 0; i < info.nb_vec_lines; i++) {
        char *line = info.vec[i];

        tmp = strstr(line, OP_STR);
        if (tmp) {
            if (strstr(line, OP_ENC_STR)) {
                info.op = FIPS_TEST_ENC_AUTH_GEN;
                info.callbacks = gcm_enc_vectors;
                if (strstr(info.file_name, OP_ENC_INT_STR))
                    info.interim_info.gcm_data.gen_iv = 1;
            } else if (strstr(line, OP_DEC_STR)) {
                info.op = FIPS_TEST_DEC_AUTH_VERIF;
                info.callbacks = gcm_dec_vectors;
            } else
                return -EINVAL;
        }
    }

    info.interim_callbacks = gcm_interim_vectors;
    info.parse_writeback = parse_test_gcm_writeback;

    return 0;
}