diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/evp/p_lib.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/evp/p_lib.c | 506 |
1 files changed, 506 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/evp/p_lib.c b/openssl-1.1.0h/crypto/evp/p_lib.c new file mode 100644 index 0000000..d7372aa --- /dev/null +++ b/openssl-1.1.0h/crypto/evp/p_lib.c @@ -0,0 +1,506 @@ +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (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 <stdio.h> +#include "internal/cryptlib.h" +#include <openssl/bn.h> +#include <openssl/err.h> +#include <openssl/objects.h> +#include <openssl/evp.h> +#include <openssl/x509.h> +#include <openssl/rsa.h> +#include <openssl/dsa.h> +#include <openssl/dh.h> +#include <openssl/engine.h> + +#include "internal/asn1_int.h" +#include "internal/evp_int.h" + +static void EVP_PKEY_free_it(EVP_PKEY *x); + +int EVP_PKEY_bits(const EVP_PKEY *pkey) +{ + if (pkey && pkey->ameth && pkey->ameth->pkey_bits) + return pkey->ameth->pkey_bits(pkey); + return 0; +} + +int EVP_PKEY_security_bits(const EVP_PKEY *pkey) +{ + if (pkey == NULL) + return 0; + if (!pkey->ameth || !pkey->ameth->pkey_security_bits) + return -2; + return pkey->ameth->pkey_security_bits(pkey); +} + +int EVP_PKEY_size(EVP_PKEY *pkey) +{ + if (pkey && pkey->ameth && pkey->ameth->pkey_size) + return pkey->ameth->pkey_size(pkey); + return 0; +} + +int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) +{ +#ifndef OPENSSL_NO_DSA + if (pkey->type == EVP_PKEY_DSA) { + int ret = pkey->save_parameters; + + if (mode >= 0) + pkey->save_parameters = mode; + return (ret); + } +#endif +#ifndef OPENSSL_NO_EC + if (pkey->type == EVP_PKEY_EC) { + int ret = pkey->save_parameters; + + if (mode >= 0) + pkey->save_parameters = mode; + return (ret); + } +#endif + return (0); +} + +int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) +{ + if (to->type == EVP_PKEY_NONE) { + if (EVP_PKEY_set_type(to, from->type) == 0) + return 0; + } else if (to->type != from->type) { + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES); + goto err; + } + + if (EVP_PKEY_missing_parameters(from)) { + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS); + goto err; + } + + if (!EVP_PKEY_missing_parameters(to)) { + if (EVP_PKEY_cmp_parameters(to, from) == 1) + return 1; + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS); + return 0; + } + + if (from->ameth && from->ameth->param_copy) + return from->ameth->param_copy(to, from); + err: + return 0; +} + +int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) +{ + if (pkey->ameth && pkey->ameth->param_missing) + return pkey->ameth->param_missing(pkey); + return 0; +} + +int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) +{ + if (a->type != b->type) + return -1; + if (a->ameth && a->ameth->param_cmp) + return a->ameth->param_cmp(a, b); + return -2; +} + +int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) +{ + if (a->type != b->type) + return -1; + + if (a->ameth) { + int ret; + /* Compare parameters if the algorithm has them */ + if (a->ameth->param_cmp) { + ret = a->ameth->param_cmp(a, b); + if (ret <= 0) + return ret; + } + + if (a->ameth->pub_cmp) + return a->ameth->pub_cmp(a, b); + } + + return -2; +} + +EVP_PKEY *EVP_PKEY_new(void) +{ + EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret)); + + if (ret == NULL) { + EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); + return NULL; + } + ret->type = EVP_PKEY_NONE; + ret->save_type = EVP_PKEY_NONE; + ret->references = 1; + ret->save_parameters = 1; + ret->lock = CRYPTO_THREAD_lock_new(); + if (ret->lock == NULL) { + EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); + OPENSSL_free(ret); + return NULL; + } + return ret; +} + +int EVP_PKEY_up_ref(EVP_PKEY *pkey) +{ + int i; + + if (CRYPTO_atomic_add(&pkey->references, 1, &i, pkey->lock) <= 0) + return 0; + + REF_PRINT_COUNT("EVP_PKEY", pkey); + REF_ASSERT_ISNT(i < 2); + return ((i > 1) ? 1 : 0); +} + +/* + * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey + * is NULL just return 1 or 0 if the algorithm exists. + */ + +static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len) +{ + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *e = NULL; + if (pkey) { + if (pkey->pkey.ptr) + EVP_PKEY_free_it(pkey); + /* + * If key type matches and a method exists then this lookup has + * succeeded once so just indicate success. + */ + if ((type == pkey->save_type) && pkey->ameth) + return 1; +#ifndef OPENSSL_NO_ENGINE + /* If we have ENGINEs release them */ + ENGINE_finish(pkey->engine); + pkey->engine = NULL; + ENGINE_finish(pkey->pmeth_engine); + pkey->pmeth_engine = NULL; +#endif + } + if (str) + ameth = EVP_PKEY_asn1_find_str(&e, str, len); + else + ameth = EVP_PKEY_asn1_find(&e, type); +#ifndef OPENSSL_NO_ENGINE + if (pkey == NULL) + ENGINE_finish(e); +#endif + if (ameth == NULL) { + EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); + return 0; + } + if (pkey) { + pkey->ameth = ameth; + pkey->engine = e; + + pkey->type = pkey->ameth->pkey_id; + pkey->save_type = type; + } + return 1; +} + +int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) +{ + return pkey_set_type(pkey, type, NULL, -1); +} + +int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len) +{ + return pkey_set_type(pkey, EVP_PKEY_NONE, str, len); +} +#ifndef OPENSSL_NO_ENGINE +int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e) +{ + if (e != NULL) { + if (!ENGINE_init(e)) { + EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB); + return 0; + } + if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) { + ENGINE_finish(e); + EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM); + return 0; + } + } + ENGINE_finish(pkey->pmeth_engine); + pkey->pmeth_engine = e; + return 1; +} +#endif +int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) +{ + if (pkey == NULL || !EVP_PKEY_set_type(pkey, type)) + return 0; + pkey->pkey.ptr = key; + return (key != NULL); +} + +void *EVP_PKEY_get0(const EVP_PKEY *pkey) +{ + return pkey->pkey.ptr; +} + +const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len) +{ + ASN1_OCTET_STRING *os = NULL; + if (pkey->type != EVP_PKEY_HMAC) { + EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY); + return NULL; + } + os = EVP_PKEY_get0(pkey); + *len = os->length; + return os->data; +} + +#ifndef OPENSSL_NO_RSA +int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) +{ + int ret = EVP_PKEY_assign_RSA(pkey, key); + if (ret) + RSA_up_ref(key); + return ret; +} + +RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_RSA) { + EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY); + return NULL; + } + return pkey->pkey.rsa; +} + +RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) +{ + RSA *ret = EVP_PKEY_get0_RSA(pkey); + if (ret != NULL) + RSA_up_ref(ret); + return ret; +} +#endif + +#ifndef OPENSSL_NO_DSA +int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) +{ + int ret = EVP_PKEY_assign_DSA(pkey, key); + if (ret) + DSA_up_ref(key); + return ret; +} + +DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_DSA) { + EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY); + return NULL; + } + return pkey->pkey.dsa; +} + +DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) +{ + DSA *ret = EVP_PKEY_get0_DSA(pkey); + if (ret != NULL) + DSA_up_ref(ret); + return ret; +} +#endif + +#ifndef OPENSSL_NO_EC + +int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) +{ + int ret = EVP_PKEY_assign_EC_KEY(pkey, key); + if (ret) + EC_KEY_up_ref(key); + return ret; +} + +EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_EC) { + EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); + return NULL; + } + return pkey->pkey.ec; +} + +EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) +{ + EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey); + if (ret != NULL) + EC_KEY_up_ref(ret); + return ret; +} +#endif + +#ifndef OPENSSL_NO_DH + +int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) +{ + int ret = EVP_PKEY_assign_DH(pkey, key); + if (ret) + DH_up_ref(key); + return ret; +} + +DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) { + EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY); + return NULL; + } + return pkey->pkey.dh; +} + +DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) +{ + DH *ret = EVP_PKEY_get0_DH(pkey); + if (ret != NULL) + DH_up_ref(ret); + return ret; +} +#endif + +int EVP_PKEY_type(int type) +{ + int ret; + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *e; + ameth = EVP_PKEY_asn1_find(&e, type); + if (ameth) + ret = ameth->pkey_id; + else + ret = NID_undef; +#ifndef OPENSSL_NO_ENGINE + ENGINE_finish(e); +#endif + return ret; +} + +int EVP_PKEY_id(const EVP_PKEY *pkey) +{ + return pkey->type; +} + +int EVP_PKEY_base_id(const EVP_PKEY *pkey) +{ + return EVP_PKEY_type(pkey->type); +} + +void EVP_PKEY_free(EVP_PKEY *x) +{ + int i; + + if (x == NULL) + return; + + CRYPTO_atomic_add(&x->references, -1, &i, x->lock); + REF_PRINT_COUNT("EVP_PKEY", x); + if (i > 0) + return; + REF_ASSERT_ISNT(i < 0); + EVP_PKEY_free_it(x); + CRYPTO_THREAD_lock_free(x->lock); + sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); + OPENSSL_free(x); +} + +static void EVP_PKEY_free_it(EVP_PKEY *x) +{ + /* internal function; x is never NULL */ + if (x->ameth && x->ameth->pkey_free) { + x->ameth->pkey_free(x); + x->pkey.ptr = NULL; + } +#ifndef OPENSSL_NO_ENGINE + ENGINE_finish(x->engine); + x->engine = NULL; + ENGINE_finish(x->pmeth_engine); + x->pmeth_engine = NULL; +#endif +} + +static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, + const char *kstr) +{ + BIO_indent(out, indent, 128); + BIO_printf(out, "%s algorithm \"%s\" unsupported\n", + kstr, OBJ_nid2ln(pkey->type)); + return 1; +} + +int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->pub_print) + return pkey->ameth->pub_print(out, pkey, indent, pctx); + + return unsup_alg(out, pkey, indent, "Public Key"); +} + +int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->priv_print) + return pkey->ameth->priv_print(out, pkey, indent, pctx); + + return unsup_alg(out, pkey, indent, "Private Key"); +} + +int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->param_print) + return pkey->ameth->param_print(out, pkey, indent, pctx); + return unsup_alg(out, pkey, indent, "Parameters"); +} + +static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2) +{ + if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL) + return -2; + return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2); +} + +int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) +{ + return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid); +} + +int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, + const unsigned char *pt, size_t ptlen) +{ + if (ptlen > INT_MAX) + return 0; + if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen, + (void *)pt) <= 0) + return 0; + return 1; +} + +size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt) +{ + int rv; + rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt); + if (rv <= 0) + return 0; + return rv; +} |