diff options
Diffstat (limited to 'thirdparty/mbedtls/library/arc4.c')
| -rw-r--r-- | thirdparty/mbedtls/library/arc4.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/thirdparty/mbedtls/library/arc4.c b/thirdparty/mbedtls/library/arc4.c deleted file mode 100644 index 7ff747d040..0000000000 --- a/thirdparty/mbedtls/library/arc4.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * An implementation of the ARCFOUR algorithm - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ -/* - * The ARCFOUR algorithm was publicly disclosed on 94/09. - * - * http://groups.google.com/group/sci.crypt/msg/10a300c9d21afca0 - */ - -#include "common.h" - -#if defined(MBEDTLS_ARC4_C) - -#include "mbedtls/arc4.h" -#include "mbedtls/platform_util.h" - -#include <string.h> - -#include "mbedtls/platform.h" - -#if !defined(MBEDTLS_ARC4_ALT) - -void mbedtls_arc4_init(mbedtls_arc4_context *ctx) -{ - memset(ctx, 0, sizeof(mbedtls_arc4_context)); -} - -void mbedtls_arc4_free(mbedtls_arc4_context *ctx) -{ - if (ctx == NULL) { - return; - } - - mbedtls_platform_zeroize(ctx, sizeof(mbedtls_arc4_context)); -} - -/* - * ARC4 key schedule - */ -void mbedtls_arc4_setup(mbedtls_arc4_context *ctx, const unsigned char *key, - unsigned int keylen) -{ - int i, j, a; - unsigned int k; - unsigned char *m; - - ctx->x = 0; - ctx->y = 0; - m = ctx->m; - - for (i = 0; i < 256; i++) { - m[i] = (unsigned char) i; - } - - j = k = 0; - - for (i = 0; i < 256; i++, k++) { - if (k >= keylen) { - k = 0; - } - - a = m[i]; - j = (j + a + key[k]) & 0xFF; - m[i] = m[j]; - m[j] = (unsigned char) a; - } -} - -/* - * ARC4 cipher function - */ -int mbedtls_arc4_crypt(mbedtls_arc4_context *ctx, size_t length, const unsigned char *input, - unsigned char *output) -{ - int x, y, a, b; - size_t i; - unsigned char *m; - - x = ctx->x; - y = ctx->y; - m = ctx->m; - - for (i = 0; i < length; i++) { - x = (x + 1) & 0xFF; a = m[x]; - y = (y + a) & 0xFF; b = m[y]; - - m[x] = (unsigned char) b; - m[y] = (unsigned char) a; - - output[i] = (unsigned char) - (input[i] ^ m[(unsigned char) (a + b)]); - } - - ctx->x = x; - ctx->y = y; - - return 0; -} - -#endif /* !MBEDTLS_ARC4_ALT */ - -#if defined(MBEDTLS_SELF_TEST) -/* - * ARC4 tests vectors as posted by Eric Rescorla in sep. 1994: - * - * http://groups.google.com/group/comp.security.misc/msg/10a300c9d21afca0 - */ -static const unsigned char arc4_test_key[3][8] = -{ - { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }, - { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } -}; - -static const unsigned char arc4_test_pt[3][8] = -{ - { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } -}; - -static const unsigned char arc4_test_ct[3][8] = -{ - { 0x75, 0xB7, 0x87, 0x80, 0x99, 0xE0, 0xC5, 0x96 }, - { 0x74, 0x94, 0xC2, 0xE7, 0x10, 0x4B, 0x08, 0x79 }, - { 0xDE, 0x18, 0x89, 0x41, 0xA3, 0x37, 0x5D, 0x3A } -}; - -/* - * Checkup routine - */ -int mbedtls_arc4_self_test(int verbose) -{ - int i, ret = 0; - unsigned char ibuf[8]; - unsigned char obuf[8]; - mbedtls_arc4_context ctx; - - mbedtls_arc4_init(&ctx); - - for (i = 0; i < 3; i++) { - if (verbose != 0) { - mbedtls_printf(" ARC4 test #%d: ", i + 1); - } - - memcpy(ibuf, arc4_test_pt[i], 8); - - mbedtls_arc4_setup(&ctx, arc4_test_key[i], 8); - mbedtls_arc4_crypt(&ctx, 8, ibuf, obuf); - - if (memcmp(obuf, arc4_test_ct[i], 8) != 0) { - if (verbose != 0) { - mbedtls_printf("failed\n"); - } - - ret = 1; - goto exit; - } - - if (verbose != 0) { - mbedtls_printf("passed\n"); - } - } - - if (verbose != 0) { - mbedtls_printf("\n"); - } - -exit: - mbedtls_arc4_free(&ctx); - - return ret; -} - -#endif /* MBEDTLS_SELF_TEST */ - -#endif /* MBEDTLS_ARC4_C */ |