GMAC implementation

Remove GMAC demo program because it has been superceded by the EVP MAC one

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7548)

2 files changed, 3 insertions, 108 deletions

diff --git a/demos/evp/Makefile b/demos/evp/Makefile
index 1fb0f39c77..c2e10a1ded 100644
--- a/demos/evp/Makefile
+++ b/demos/evp/Makefile
@@ -7,19 +7,17 @@
 #
 #    LD_LIBRARY_PATH=../.. ./aesccm
 #    LD_LIBRARY_PATH=../.. ./aesgcm
-#    LD_LIBRARY_PATH=../.. ./gmac
 
 CFLAGS = $(OPENSSL_INCS_LOCATION)
 LDFLAGS = $(OPENSSL_LIBS_LOCATION) -lssl -lcrypto
 
-all: aesccm aesgcm gmac
+all: aesccm aesgcm
 
 aesccm: aesccm.o
 aesgcm: aesgcm.o
-gmac: gmac.o
 
-aesccm aesgcm gmac:
+aesccm aesgcm:
 	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
 
 clean:
-	$(RM) aesccm aesgcm gmac *.o
+	$(RM) aesccm aesgcm *.o
diff --git a/demos/evp/gmac.c b/demos/evp/gmac.c
deleted file mode 100644
index 0b2231b368..0000000000
--- a/demos/evp/gmac.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License").  You may not use
- * this file except in compliance with the License.  You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-/*
- * Simple AES GMAC test program, uses the same NIST data used for the FIPS
- * self test but uses the application level EVP APIs.
- */
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <openssl/bio.h>
-#include <openssl/evp.h>
-
-/* AES-GMAC test data from NIST public test vectors */
-
-static const unsigned char gmac_key[] = { 0x77, 0xbe, 0x63, 0x70, 0x89, 0x71, 0xc4, 0xe2,
-               0x40, 0xd1, 0xcb, 0x79, 0xe8, 0xd7, 0x7f, 0xeb };
-static const unsigned char gmac_iv[] = { 0xe0, 0xe0, 0x0f, 0x19, 0xfe, 0xd7, 0xba, 0x01,
-              0x36, 0xa7, 0x97, 0xf3 };
-static const unsigned char gmac_aad[] = { 0x7a, 0x43, 0xec, 0x1d, 0x9c, 0x0a, 0x5a, 0x78,
-               0xa0, 0xb1, 0x65, 0x33, 0xa6, 0x21, 0x3c, 0xab };
-
-static const unsigned char gmac_tag[] = { 0x20, 0x9f, 0xcc, 0x8d, 0x36, 0x75, 0xed, 0x93,
-               0x8e, 0x9c, 0x71, 0x66, 0x70, 0x9d, 0xd9, 0x46 };
-
-static int aes_gmac(void)
-{
-    EVP_CIPHER_CTX *ctx;
-    int outlen, tmplen;
-    unsigned char outbuf[1024];
-    int ret = 0;
-
-    printf("AES GMAC:\n");
-    printf("Authenticated Data:\n");
-    BIO_dump_fp(stdout, gmac_aad, sizeof(gmac_aad));
-
-    if ((ctx = EVP_CIPHER_CTX_new()) == NULL) {
-        printf("EVP_CIPHER_CTX_new: failed\n");
-        goto err;
-    }
-
-    /* Set cipher type and mode */
-    if (!EVP_EncryptInit_ex(ctx, EVP_aes_128_gcm(), NULL, NULL, NULL)) {
-        printf("EVP_EncryptInit_ex: failed\n");
-        goto err;
-    }
-
-    /* Set IV length if default 96 bits is not appropriate */
-    if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(gmac_iv),
-                             NULL)) {
-        printf("EVP_CIPHER_CTX_ctrl: set IV length failed\n");
-        goto err;
-    }
-
-    /* Initialise key and IV */
-    if (!EVP_EncryptInit_ex(ctx, NULL, NULL, gmac_key, gmac_iv)) {
-        printf("EVP_EncryptInit_ex: set key and IV failed\n");
-        goto err;
-    }
-
-    /* Zero or more calls to specify any AAD */
-    if (!EVP_EncryptUpdate(ctx, NULL, &outlen, gmac_aad, sizeof(gmac_aad))) {
-        printf("EVP_EncryptUpdate: setting AAD failed\n");
-        goto err;
-    }
-
-    /* Finalise: note get no output for GMAC */
-    if (!EVP_EncryptFinal_ex(ctx, outbuf, &outlen)) {
-        printf("EVP_EncryptFinal_ex: failed\n");
-        goto err;
-    }
-
-    /* Get tag */
-    if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, outbuf)) {
-        printf("EVP_CIPHER_CTX_ctrl: failed\n");
-        goto err;
-    }
-
-    /* Output tag */
-    printf("Tag:\n");
-    BIO_dump_fp(stdout, outbuf, 16);
-
-    /* Is the tag correct? */
-    if (memcmp(outbuf, gmac_tag, sizeof(gmac_tag)) != 0) {
-        printf("Expected:\n");
-        BIO_dump_fp(stdout, gmac_tag, sizeof(gmac_tag));
-    } else 
-        ret = 1;
-err:
-    EVP_CIPHER_CTX_free(ctx);
-    return ret;
-}
-
-int main(int argc, char **argv)
-{
-    return aes_gmac() ? EXIT_SUCCESS : EXIT_FAILURE;
-}