From 464df1d5e5ab1322e2dd0a7796939fff1aeefa9a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:49:25 +0200 Subject: Adding upstream version 1.47.0. Signed-off-by: Daniel Baumann --- lib/e2p/crypto_mode.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 lib/e2p/crypto_mode.c (limited to 'lib/e2p/crypto_mode.c') diff --git a/lib/e2p/crypto_mode.c b/lib/e2p/crypto_mode.c new file mode 100644 index 0000000..4933016 --- /dev/null +++ b/lib/e2p/crypto_mode.c @@ -0,0 +1,74 @@ +/* + * crypto_mode.c --- convert between encryption modes and strings + * + * Copyright (C) 1999 Theodore Ts'o + * + * %Begin-Header% + * This file may be redistributed under the terms of the GNU Library + * General Public License, version 2. + * %End-Header% + */ + +#include "config.h" +#include +#include +#include +#include +#include +#include + +#include "e2p.h" + +struct mode { + int num; + const char *string; +}; + +static struct mode mode_list[] = { + { EXT4_ENCRYPTION_MODE_INVALID, "Invalid"}, + { EXT4_ENCRYPTION_MODE_AES_256_XTS, "AES-256-XTS"}, + { EXT4_ENCRYPTION_MODE_AES_256_GCM, "AES-256-GCM"}, + { EXT4_ENCRYPTION_MODE_AES_256_CBC, "AES-256-CBC"}, + { 0, 0 }, +}; + +const char *e2p_encmode2string(int num) +{ + struct mode *p; + static char buf[20]; + + for (p = mode_list; p->string; p++) { + if (num == p->num) + return p->string; + } + sprintf(buf, "ENC_MODE_%d", num); + return buf; +} + +/* + * Returns the hash algorithm, or -1 on error + */ +int e2p_string2encmode(char *string) +{ + struct mode *p; + char *eptr; + int num; + + for (p = mode_list; p->string; p++) { + if (!strcasecmp(string, p->string)) { + return p->num; + } + } + if (strncasecmp(string, "ENC_MODE_", 9)) + return -1; + + if (string[9] == 0) + return -1; + num = strtol(string+9, &eptr, 10); + if (num > 255 || num < 0) + return -1; + if (*eptr) + return -1; + return num; +} + -- cgit v1.2.3