diff --git a/.gitignore b/.gitignore index 0447f299..ffd411c4 100644 --- a/.gitignore +++ b/.gitignore @@ -118,6 +118,8 @@ crypto/3des/3des-file-encrypt crypto/aes/aes-file-encrypt crypto/aes/aescfb-file-encrypt crypto/aes/aesctr-file-encrypt +crypto/aes/aesgcm-file-encrypt +crypto/aes/aesgcm-oneshot crypto/camellia/camellia-encrypt crypto/pkcs12/pkcs12-create-example crypto/pkcs12/pkcs12-example diff --git a/crypto/aes/Makefile b/crypto/aes/Makefile index ff7d514f..9479e697 100644 --- a/crypto/aes/Makefile +++ b/crypto/aes/Makefile @@ -3,7 +3,7 @@ CFLAGS=-Wall WOLFSSL_INSTALL_DIR=/usr/local LIBS=-L$(WOLFSSL_INSTALL_DIR)/lib -lwolfssl -lm -all: aes-file-encrypt aescfb-file-encrypt aesctr-file-encrypt aesgcm-file-encrypt +all: aes-file-encrypt aescfb-file-encrypt aesctr-file-encrypt aesgcm-file-encrypt aesgcm-oneshot aes-file-encrypt: aes-file-encrypt.o $(CC) -o $@ $^ $(CFLAGS) $(LIBS) @@ -17,7 +17,10 @@ aesctr-file-encrypt: aesctr-file-encrypt.o aesgcm-file-encrypt: aesgcm-file-encrypt.o $(CC) -o $@ $^ $(CFLAGS) $(LIBS) +aesgcm-oneshot: aesgcm-oneshot.o + $(CC) -o $@ $^ $(CFLAGS) $(LIBS) + .PHONY: clean clean: - rm -f *.o aes-file-encrypt aescfb-file-encrypt aesctr-file-encrypt aesgcm-file-encrypt text* + rm -f *.o aes-file-encrypt aescfb-file-encrypt aesctr-file-encrypt aesgcm-file-encrypt text* aesgcm-oneshot diff --git a/crypto/aes/aesgcm-oneshot.c b/crypto/aes/aesgcm-oneshot.c new file mode 100644 index 00000000..079ad0d3 --- /dev/null +++ b/crypto/aes/aesgcm-oneshot.c @@ -0,0 +1,142 @@ +/* aesgcm-oneshot.c + * + * Copyright (C) 2006-2024 wolfSSL Inc. + * + * This file is part of wolfSSL. + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA + */ + + +#include +#include +#include +#include +#include + +#if !defined(NO_AES) && defined(HAVE_AESGCM) +int aesgcm_enc_dec() +{ + Aes aesEnc; + Aes aesDec; + unsigned char key[AES_256_KEY_SIZE]; + int ret = 0; + unsigned char data[33]; + unsigned char enc[33]; + unsigned char dec[33]; + unsigned char iv[GCM_NONCE_MID_SZ]; + unsigned char authTag[AES_BLOCK_SIZE]; + size_t i; + + memset(key, 9, sizeof(key)); + memset(data, 9, sizeof(data)); + memset(iv, 9, sizeof(iv)); + + fprintf(stderr, "Encrypt with AES128-GCM\n"); + /* Initialize AES encryption object. */ + ret = wc_AesInit(&aesEnc, NULL, INVALID_DEVID); + if (ret == 0) { + /* Set GCM key into AES encryption object. */ + ret = wc_AesGcmSetKey(&aesEnc, key, AES_128_KEY_SIZE); + if (ret != 0) + fprintf(stderr, "Set Key failed: %d\n", ret); + } + if (ret == 0) { + printf(" Plaintext: "); + for (i = 0; i < sizeof(data); i++) + printf("%02x", data[i]); + printf("\n"); + + /* Encrypt data with AES encryption object and get ciphertext and + * authentication tag. No additional authentication data. */ + ret = wc_AesGcmEncrypt(&aesEnc, enc, data, sizeof(data), iv, sizeof(iv), + authTag, sizeof(authTag), NULL, 0); + if (ret != 0) + fprintf(stderr, "Encrypt failed: %d\n", ret); + } + if (ret == 0) { + printf("Ciphertext: "); + for (i = 0; i < sizeof(data); i++) + printf("%02x", enc[i]); + printf("\n"); + printf(" Auth Tag: "); + for (i = 0; i < sizeof(authTag); i++) + printf("%02x", authTag[i]); + printf("\n"); + } + + if (ret == 0) { + fprintf(stderr, "Decrypt with AES128-GCM\n"); + /* Initialize AES decryption object. */ + ret = wc_AesInit(&aesDec, NULL, INVALID_DEVID); + } + if (ret == 0) { + /* Set GCM key into AES decryption object. */ + ret = wc_AesGcmSetKey(&aesDec, key, AES_128_KEY_SIZE); + if (ret != 0) + fprintf(stderr, "Set Key failed: %d\n", ret); + } + if (ret == 0) { + /* Check authentication tag with ciphertext and decrypt ciphertext with + * AES decryption object and get decrypted data. No additional + * authentication data. */ + ret = wc_AesGcmDecrypt(&aesDec, dec, enc, sizeof(enc), iv, sizeof(iv), + authTag, sizeof(authTag), NULL, 0); + if (ret == AES_GCM_AUTH_E) + fprintf(stderr, "Authentication failed: %d\n", ret); + else if (ret != 0) + fprintf(stderr, "Decrypt failed: %d\n", ret); + } + if (ret == 0) { + printf(" Decrypted: "); + for (i = 0; i < sizeof(data); i++) + printf("%02x", dec[i]); + printf("\n"); + } + + return ret; +} +#endif + +int main(int argc, char* argv[]) +{ + int ret = 0; + + if (argc != 1) { + fprintf(stderr, "Usage: %s\n", argv[0]); + return 1; + } + +#if !defined(NO_AES) && defined(HAVE_AESGCM) + +#if defined(DEBUG_WOLFSSL) + wolfSSL_Debugging_ON(); +#endif + wolfCrypt_Init(); + + if (aesgcm_enc_dec() != 0) + ret = 1; + + wolfCrypt_Cleanup(); + +#else + + printf("AES-GCM not built into wolfSSL\n"); + +#endif + + return ret; +} +