diff options
Diffstat (limited to 'crypto/openssl/providers/implementations/ciphers/cipher_rc4.c')
| -rw-r--r-- | crypto/openssl/providers/implementations/ciphers/cipher_rc4.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/crypto/openssl/providers/implementations/ciphers/cipher_rc4.c b/crypto/openssl/providers/implementations/ciphers/cipher_rc4.c new file mode 100644 index 000000000000..733524d36f5a --- /dev/null +++ b/crypto/openssl/providers/implementations/ciphers/cipher_rc4.c @@ -0,0 +1,119 @@ +/* + * Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* Dispatch functions for RC4 ciphers */ + +/* + * RC4 low level APIs are deprecated for public use, but still ok for internal + * use. + */ +#include "internal/deprecated.h" + +#include "cipher_rc4.h" +#include "prov/implementations.h" +#include "prov/providercommon.h" + +#define RC4_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH + +static OSSL_FUNC_cipher_encrypt_init_fn rc4_einit; +static OSSL_FUNC_cipher_decrypt_init_fn rc4_dinit; +static OSSL_FUNC_cipher_freectx_fn rc4_freectx; +static OSSL_FUNC_cipher_dupctx_fn rc4_dupctx; + +static void rc4_freectx(void *vctx) +{ + PROV_RC4_CTX *ctx = (PROV_RC4_CTX *)vctx; + + ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx); + OPENSSL_clear_free(ctx, sizeof(*ctx)); +} + +static void *rc4_dupctx(void *ctx) +{ + PROV_RC4_CTX *in = (PROV_RC4_CTX *)ctx; + PROV_RC4_CTX *ret; + + if (!ossl_prov_is_running()) + return NULL; + + ret = OPENSSL_malloc(sizeof(*ret)); + if (ret == NULL) + return NULL; + *ret = *in; + + return ret; +} + +static int rc4_einit(void *ctx, const unsigned char *key, size_t keylen, + const unsigned char *iv, size_t ivlen, + const OSSL_PARAM params[]) +{ + if (!ossl_cipher_generic_einit(ctx, key, keylen, iv, ivlen, NULL)) + return 0; + return ossl_cipher_var_keylen_set_ctx_params(ctx, params); +} + +static int rc4_dinit(void *ctx, const unsigned char *key, size_t keylen, + const unsigned char *iv, size_t ivlen, + const OSSL_PARAM params[]) +{ + if (!ossl_cipher_generic_dinit(ctx, key, keylen, iv, ivlen, NULL)) + return 0; + return ossl_cipher_var_keylen_set_ctx_params(ctx, params); +} + +#define IMPLEMENT_cipher(alg, UCALG, flags, kbits, blkbits, ivbits, typ) \ +static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_get_params; \ +static int alg##_##kbits##_get_params(OSSL_PARAM params[]) \ +{ \ + return ossl_cipher_generic_get_params(params, 0, flags, \ + kbits, blkbits, ivbits); \ +} \ +static OSSL_FUNC_cipher_newctx_fn alg##_##kbits##_newctx; \ +static void *alg##_##kbits##_newctx(void *provctx) \ +{ \ + PROV_##UCALG##_CTX *ctx; \ + if (!ossl_prov_is_running()) \ + return NULL; \ + ctx = OPENSSL_zalloc(sizeof(*ctx)); \ + if (ctx != NULL) { \ + ossl_cipher_generic_initkey(ctx, kbits, blkbits, ivbits, 0, flags, \ + ossl_prov_cipher_hw_##alg(kbits), NULL); \ + } \ + return ctx; \ +} \ +const OSSL_DISPATCH ossl_##alg##kbits##_functions[] = { \ + { OSSL_FUNC_CIPHER_NEWCTX, \ + (void (*)(void)) alg##_##kbits##_newctx }, \ + { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \ + { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \ + { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))rc4_einit }, \ + { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))rc4_dinit }, \ + { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))ossl_cipher_generic_##typ##_update },\ + { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))ossl_cipher_generic_##typ##_final }, \ + { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))ossl_cipher_generic_cipher }, \ + { OSSL_FUNC_CIPHER_GET_PARAMS, \ + (void (*)(void)) alg##_##kbits##_get_params }, \ + { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \ + (void (*)(void))ossl_cipher_generic_get_ctx_params }, \ + { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \ + (void (*)(void))ossl_cipher_var_keylen_set_ctx_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \ + (void (*)(void))ossl_cipher_generic_gettable_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \ + (void (*)(void))ossl_cipher_generic_gettable_ctx_params }, \ + { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \ + (void (*)(void))ossl_cipher_var_keylen_settable_ctx_params }, \ + OSSL_DISPATCH_END \ +}; + +/* ossl_rc440_functions */ +IMPLEMENT_cipher(rc4, RC4, RC4_FLAGS, 40, 8, 0, stream) +/* ossl_rc4128_functions */ +IMPLEMENT_cipher(rc4, RC4, RC4_FLAGS, 128, 8, 0, stream) |