diff options
Diffstat (limited to 'providers/common/provider_util.c')
-rw-r--r-- | providers/common/provider_util.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/providers/common/provider_util.c b/providers/common/provider_util.c new file mode 100644 index 0000000000..babbfffd3d --- /dev/null +++ b/providers/common/provider_util.c @@ -0,0 +1,151 @@ +/* + * Copyright 2019 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 + */ + +#include <openssl/evp.h> +#include <openssl/core_names.h> +#include "internal/provider_util.h" + +void ossl_prov_cipher_reset(PROV_CIPHER *pc) +{ + EVP_CIPHER_free(pc->alloc_cipher); + pc->alloc_cipher = NULL; + pc->cipher = NULL; + pc->engine = NULL; +} + +int ossl_prov_cipher_copy(PROV_CIPHER *dst, const PROV_CIPHER *src) +{ + if (src->alloc_cipher != NULL && !EVP_CIPHER_up_ref(src->alloc_cipher)) + return 0; + dst->engine = src->engine; + dst->cipher = src->cipher; + dst->alloc_cipher = src->alloc_cipher; + return 1; +} + +static int load_common(const OSSL_PARAM params[], const char **propquery, + ENGINE **engine) +{ + const OSSL_PARAM *p; + + *propquery = NULL; + p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES); + if (p != NULL) { + if (p->data_type != OSSL_PARAM_UTF8_STRING) + return 0; + *propquery = p->data; + } + + *engine = NULL; + /* TODO legacy stuff, to be removed */ +#ifndef FIPS_MODE /* Inside the FIPS module, we don't support legacy ciphers */ + p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE); + if (p != NULL) { + if (p->data_type != OSSL_PARAM_UTF8_STRING) + return 0; + ENGINE_finish(*engine); + *engine = ENGINE_by_id(p->data); + if (*engine == NULL) + return 0; + } +#endif + return 1; +} + +int ossl_prov_cipher_load_from_params(PROV_CIPHER *pc, + const OSSL_PARAM params[], + OPENSSL_CTX *ctx) +{ + const OSSL_PARAM *p; + const char *propquery; + + if (!load_common(params, &propquery, &pc->engine)) + return 0; + + p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_CIPHER); + if (p == NULL) + return 1; + if (p->data_type != OSSL_PARAM_UTF8_STRING) + return 0; + + EVP_CIPHER_free(pc->alloc_cipher); + pc->cipher = pc->alloc_cipher = EVP_CIPHER_fetch(ctx, p->data, propquery); + /* TODO legacy stuff, to be removed */ +#ifndef FIPS_MODE /* Inside the FIPS module, we don't support legacy ciphers */ + if (pc->cipher == NULL) + pc->cipher = EVP_get_cipherbyname(p->data); +#endif + return pc->cipher != NULL; +} + +const EVP_CIPHER *ossl_prov_cipher_cipher(const PROV_CIPHER *pc) +{ + return pc->cipher; +} + +ENGINE *ossl_prov_cipher_engine(const PROV_CIPHER *pc) +{ + return pc->engine; +} + +void ossl_prov_digest_reset(PROV_DIGEST *pd) +{ + EVP_MD_free(pd->alloc_md); + pd->alloc_md = NULL; + pd->md = NULL; + pd->engine = NULL; +} + +int ossl_prov_digest_copy(PROV_DIGEST *dst, const PROV_DIGEST *src) +{ + if (src->alloc_md != NULL && !EVP_MD_up_ref(src->alloc_md)) + return 0; + dst->engine = src->engine; + dst->md = src->md; + dst->alloc_md = src->alloc_md; + return 1; +} + +int ossl_prov_digest_load_from_params(PROV_DIGEST *pd, + const OSSL_PARAM params[], + OPENSSL_CTX *ctx) +{ + const OSSL_PARAM *p; + const char *propquery; + + if (!load_common(params, &propquery, &pd->engine)) + return 0; + + + p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_DIGEST); + if (p == NULL) + return 1; + if (p->data_type != OSSL_PARAM_UTF8_STRING) + return 0; + + EVP_MD_free(pd->alloc_md); + pd->md = pd->alloc_md = EVP_MD_fetch(ctx, p->data, propquery); + /* TODO legacy stuff, to be removed */ +#ifndef FIPS_MODE /* Inside the FIPS module, we don't support legacy digests */ + if (pd->md == NULL) + pd->md = EVP_get_digestbyname(p->data); +#endif + return pd->md != NULL; +} + +const EVP_MD *ossl_prov_digest_md(const PROV_DIGEST *pd) +{ + return pd->md; +} + +ENGINE *ossl_prov_digest_engine(const PROV_DIGEST *pd) +{ + return pd->engine; +} + |