1 files changed, 57 insertions, 0 deletions
diff --git a/utilities/hash_pass.c b/utilities/hash_pass.c
new file mode 100644
index 0000000..fdabbb6
--- /dev/null
+++ b/utilities/hash_pass.c
@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sodium.h>
+#include "../hashing_settings.h"
+
+
+int main() {
+	bool echo_success = false;
+
+	struct termios tios, tios_orig;
+	int ret = tcgetattr(0, &tios_orig);
+	if (ret == 0) {
+		memcpy(&tios, &tios_orig, sizeof(struct termios));
+		tios.c_lflag &= ~ECHO;
+		ret = tcsetattr(0, TCSANOW, &tios);
+		if (ret == 0) echo_success = true;
+	}
+
+	if (!echo_success && isatty(0)) {
+		fprintf(stderr, "WARNING: Cannot disable ECHO on stdin\n");
+	}
+
+	printf("Password: ");
+	fflush(stdout);
+
+	char *password = NULL;
+	size_t passlen = 0;
+	ssize_t nr = getline(&password, &passlen, stdin);
+	if (nr > 0) {
+		printf("\n");
+
+		if (passlen > 0) password[--passlen] = '\0';
+
+		char result[crypto_pwhash_STRBYTES + 1];
+
+		ret = crypto_pwhash_str(
+				result, password, passlen,
+				PASSHASH_OPSLIMIT, PASSHASH_MEMLIMIT);
+		if (ret == 0) {
+			result[crypto_pwhash_STRBYTES] = '\0';
+
+			printf("Hashed: %s\n", result);
+		}
+
+		sodium_memzero(password, passlen);
+	}
+
+	if (echo_success) {
+		ret = tcsetattr(0, TCSANOW, &tios_orig);
+		if (ret != 0) {
+			fprintf(stderr, "WARNING: Cannot reset original termios on stdin\n");
+		}
+	}
+}