Assignment-7-sgximpl #13
1 changed files with 5 additions and 2 deletions
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@ -27,6 +27,7 @@ static void syntax_exit() {
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static EVP_PKEY *read_public_key(uint8_t *public_key_file, EVP_PKEY **key) {
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if(public_key_file == NULL) {
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fprintf(stderr, "public_key_file is a null pointer!\n");
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return NULL;
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}
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FILE *fd = fopen(public_key_file, "rb");
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@ -44,11 +45,13 @@ static EVP_PKEY *read_public_key(uint8_t *public_key_file, EVP_PKEY **key) {
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static void hash_firmware(uint8_t *firmware_path, EVP_MD_CTX **ctx) {
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if(firmware_path == NULL) {
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fprintf(stderr, "firmware_path is a null pointer!\n");
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return;
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}
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FILE *fd = fopen(firmware_path, "rb");
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if(fd == NULL) {
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fprintf(stderr, "failed to open firmware!\n");
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goto exit;
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}
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size_t size;
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@ -57,7 +60,7 @@ static void hash_firmware(uint8_t *firmware_path, EVP_MD_CTX **ctx) {
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EVP_DigestVerifyUpdate(*ctx, buf, size);
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}
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fclose(fd);
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exit: fclose(fd);
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}
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static void read_signature(uint8_t *signature, size_t *signature_size) {
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