mirror of
https://github.com/openssl/openssl.git
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0db957dbbc
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/7249)
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* Simple AES GMAC test program, uses the same NIST data used for the FIPS
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* self test but uses the application level EVP APIs.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <openssl/bio.h>
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#include <openssl/evp.h>
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/* AES-GMAC test data from NIST public test vectors */
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static const unsigned char gmac_key[] = { 0x77, 0xbe, 0x63, 0x70, 0x89, 0x71, 0xc4, 0xe2,
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0x40, 0xd1, 0xcb, 0x79, 0xe8, 0xd7, 0x7f, 0xeb };
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static const unsigned char gmac_iv[] = { 0xe0, 0xe0, 0x0f, 0x19, 0xfe, 0xd7, 0xba, 0x01,
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0x36, 0xa7, 0x97, 0xf3 };
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static const unsigned char gmac_aad[] = { 0x7a, 0x43, 0xec, 0x1d, 0x9c, 0x0a, 0x5a, 0x78,
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0xa0, 0xb1, 0x65, 0x33, 0xa6, 0x21, 0x3c, 0xab };
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static const unsigned char gmac_tag[] = { 0x20, 0x9f, 0xcc, 0x8d, 0x36, 0x75, 0xed, 0x93,
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0x8e, 0x9c, 0x71, 0x66, 0x70, 0x9d, 0xd9, 0x46 };
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static int aes_gmac(void)
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{
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EVP_CIPHER_CTX *ctx;
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int outlen, tmplen;
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unsigned char outbuf[1024];
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int ret = 0;
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printf("AES GMAC:\n");
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printf("Authenticated Data:\n");
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BIO_dump_fp(stdout, gmac_aad, sizeof(gmac_aad));
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if ((ctx = EVP_CIPHER_CTX_new()) == NULL) {
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printf("EVP_CIPHER_CTX_new: failed\n");
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goto err;
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}
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/* Set cipher type and mode */
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if (!EVP_EncryptInit_ex(ctx, EVP_aes_128_gcm(), NULL, NULL, NULL)) {
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printf("EVP_EncryptInit_ex: failed\n");
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goto err;
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}
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/* Set IV length if default 96 bits is not appropriate */
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if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(gmac_iv),
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NULL)) {
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printf("EVP_CIPHER_CTX_ctrl: set IV length failed\n");
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goto err;
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}
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/* Initialise key and IV */
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if (!EVP_EncryptInit_ex(ctx, NULL, NULL, gmac_key, gmac_iv)) {
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printf("EVP_EncryptInit_ex: set key and IV failed\n");
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goto err;
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}
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/* Zero or more calls to specify any AAD */
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if (!EVP_EncryptUpdate(ctx, NULL, &outlen, gmac_aad, sizeof(gmac_aad))) {
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printf("EVP_EncryptUpdate: setting AAD failed\n");
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goto err;
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}
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/* Finalise: note get no output for GMAC */
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if (!EVP_EncryptFinal_ex(ctx, outbuf, &outlen)) {
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printf("EVP_EncryptFinal_ex: failed\n");
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goto err;
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}
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/* Get tag */
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if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, outbuf)) {
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printf("EVP_CIPHER_CTX_ctrl: failed\n");
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goto err;
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}
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/* Output tag */
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printf("Tag:\n");
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BIO_dump_fp(stdout, outbuf, 16);
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/* Is the tag correct? */
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if (memcmp(outbuf, gmac_tag, sizeof(gmac_tag)) != 0) {
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printf("Expected:\n");
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BIO_dump_fp(stdout, gmac_tag, sizeof(gmac_tag));
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} else
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ret = 1;
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err:
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EVP_CIPHER_CTX_free(ctx);
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return ret;
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}
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int main(int argc, char **argv)
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{
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return aes_gmac() ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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