diff options
Diffstat (limited to 'crypto/openssl/providers/implementations/ciphers/cipher_rc5.c')
| -rw-r--r-- | crypto/openssl/providers/implementations/ciphers/cipher_rc5.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/crypto/openssl/providers/implementations/ciphers/cipher_rc5.c b/crypto/openssl/providers/implementations/ciphers/cipher_rc5.c new file mode 100644 index 000000000000..6fa491d83ef3 --- /dev/null +++ b/crypto/openssl/providers/implementations/ciphers/cipher_rc5.c @@ -0,0 +1,186 @@ +/* + * 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 RC5 cipher modes ecb, cbc, ofb, cfb */ + +/* + * RC5 low level APIs are deprecated for public use, but still ok for internal + * use. + */ +#include "internal/deprecated.h" + +#include <openssl/proverr.h> +#include "cipher_rc5.h" +#include "prov/implementations.h" +#include "prov/providercommon.h" + +#define RC5_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH + +static OSSL_FUNC_cipher_encrypt_init_fn rc5_einit; +static OSSL_FUNC_cipher_decrypt_init_fn rc5_dinit; +static OSSL_FUNC_cipher_freectx_fn rc5_freectx; +static OSSL_FUNC_cipher_dupctx_fn rc5_dupctx; +OSSL_FUNC_cipher_gettable_ctx_params_fn rc5_gettable_ctx_params; +OSSL_FUNC_cipher_settable_ctx_params_fn rc5_settable_ctx_params; +static OSSL_FUNC_cipher_set_ctx_params_fn rc5_set_ctx_params; + +static void rc5_freectx(void *vctx) +{ + PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx; + + ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx); + OPENSSL_clear_free(ctx, sizeof(*ctx)); +} + +static void *rc5_dupctx(void *ctx) +{ + PROV_RC5_CTX *in = (PROV_RC5_CTX *)ctx; + PROV_RC5_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 rc5_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 rc5_set_ctx_params(ctx, params); +} + +static int rc5_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 rc5_set_ctx_params(ctx, params); +} + +static int rc5_set_ctx_params(void *vctx, const OSSL_PARAM params[]) +{ + PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx; + const OSSL_PARAM *p; + + if (ossl_param_is_empty(params)) + return 1; + + if (!ossl_cipher_var_keylen_set_ctx_params(vctx, params)) + return 0; + + p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_ROUNDS); + if (p != NULL) { + unsigned int rounds; + + if (!OSSL_PARAM_get_uint(p, &rounds)) { + ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER); + return 0; + } + if (rounds != RC5_8_ROUNDS + && rounds != RC5_12_ROUNDS + && rounds != RC5_16_ROUNDS) { + ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS); + return 0; + } + ctx->rounds = rounds; + } + return 1; +} + +CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(rc5) + OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL), +CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(rc5) + +CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(rc5) + OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL), + OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL), +CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(rc5) + + +static int rc5_get_ctx_params(void *vctx, OSSL_PARAM params[]) +{ + PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx; + OSSL_PARAM *p; + + if (!ossl_cipher_generic_get_ctx_params(vctx, params)) + return 0; + p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_ROUNDS); + if (p != NULL && !OSSL_PARAM_set_uint(p, ctx->rounds)) { + ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER); + return 0; + } + return 1; +} + +#define IMPLEMENT_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, \ + blkbits, ivbits, typ) \ +static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \ +static int alg##_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \ +{ \ + return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, \ + flags, kbits, blkbits, ivbits); \ +} \ +static OSSL_FUNC_cipher_newctx_fn alg##_##kbits##_##lcmode##_newctx; \ +static void *alg##_##kbits##_##lcmode##_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, \ + EVP_CIPH_##UCMODE##_MODE, flags, \ + ossl_prov_cipher_hw_##alg##_##lcmode(kbits),\ + NULL); \ + ctx->rounds = RC5_12_ROUNDS; \ + } \ + return ctx; \ +} \ +const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = { \ + { OSSL_FUNC_CIPHER_NEWCTX, \ + (void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \ + { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \ + { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \ + { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))rc5_einit }, \ + { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))rc5_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##_##lcmode##_get_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \ + (void (*)(void))ossl_cipher_generic_gettable_params }, \ + { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \ + (void (*)(void))rc5_get_ctx_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \ + (void (*)(void))rc5_gettable_ctx_params }, \ + { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \ + (void (*)(void))rc5_set_ctx_params }, \ + { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \ + (void (*)(void))rc5_settable_ctx_params }, \ + OSSL_DISPATCH_END \ +}; + +/* ossl_rc5128ecb_functions */ +IMPLEMENT_cipher(rc5, RC5, ecb, ECB, RC5_FLAGS, 128, 64, 0, block) +/* ossl_rc5128cbc_functions */ +IMPLEMENT_cipher(rc5, RC5, cbc, CBC, RC5_FLAGS, 128, 64, 64, block) +/* ossl_rc5128ofb64_functions */ +IMPLEMENT_cipher(rc5, RC5, ofb64, OFB, RC5_FLAGS, 128, 8, 64, stream) +/* ossl_rc5128cfb64_functions */ +IMPLEMENT_cipher(rc5, RC5, cfb64, CFB, RC5_FLAGS, 128, 8, 64, stream) |