| |
| /* |
| * Copyright 2006-2018 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 <stdio.h> |
| #include <stdlib.h> |
| #include <openssl/engine.h> |
| #include <openssl/evp.h> |
| #include <openssl/x509v3.h> |
| #include <openssl/core_names.h> |
| #include <openssl/dh.h> |
| #include "internal/cryptlib.h" |
| #include "crypto/asn1.h" |
| #include "crypto/evp.h" |
| #include "internal/numbers.h" |
| #include "internal/provider.h" |
| #include "evp_local.h" |
| |
| typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void); |
| typedef int sk_cmp_fn_type(const char *const *a, const char *const *b); |
| |
| static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL; |
| |
| /* This array needs to be in order of NIDs */ |
| static pmeth_fn standard_methods[] = { |
| #ifndef OPENSSL_NO_RSA |
| rsa_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_DH |
| dh_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_DSA |
| dsa_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_EC |
| ec_pkey_method, |
| #endif |
| hmac_pkey_method, |
| #ifndef OPENSSL_NO_CMAC |
| cmac_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_RSA |
| rsa_pss_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_DH |
| dhx_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_SCRYPT |
| scrypt_pkey_method, |
| #endif |
| tls1_prf_pkey_method, |
| #ifndef OPENSSL_NO_EC |
| ecx25519_pkey_method, |
| ecx448_pkey_method, |
| #endif |
| hkdf_pkey_method, |
| #ifndef OPENSSL_NO_POLY1305 |
| poly1305_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_SIPHASH |
| siphash_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_EC |
| ed25519_pkey_method, |
| ed448_pkey_method, |
| #endif |
| #ifndef OPENSSL_NO_SM2 |
| sm2_pkey_method, |
| #endif |
| }; |
| |
| DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func); |
| |
| static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b) |
| { |
| return ((*a)->pkey_id - ((**b)())->pkey_id); |
| } |
| |
| IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func); |
| |
| static int pmeth_cmp(const EVP_PKEY_METHOD *const *a, |
| const EVP_PKEY_METHOD *const *b) |
| { |
| return ((*a)->pkey_id - (*b)->pkey_id); |
| } |
| |
| const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type) |
| { |
| pmeth_fn *ret; |
| EVP_PKEY_METHOD tmp; |
| const EVP_PKEY_METHOD *t = &tmp; |
| tmp.pkey_id = type; |
| if (app_pkey_methods) { |
| int idx; |
| idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp); |
| if (idx >= 0) |
| return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx); |
| } |
| ret = OBJ_bsearch_pmeth_func(&t, standard_methods, |
| sizeof(standard_methods) / |
| sizeof(pmeth_fn)); |
| if (!ret || !*ret) |
| return NULL; |
| return (**ret)(); |
| } |
| |
| static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id) |
| { |
| EVP_PKEY_CTX *ret; |
| const EVP_PKEY_METHOD *pmeth = NULL; |
| |
| /* |
| * When using providers, the context is bound to the algo implementation |
| * later. |
| */ |
| if (pkey == NULL && e == NULL && id == -1) |
| goto common; |
| |
| /* TODO(3.0) Legacy code should be removed when all is provider based */ |
| /* BEGIN legacy */ |
| if (id == -1) { |
| if (pkey == NULL) |
| return 0; |
| id = pkey->type; |
| } |
| #ifndef OPENSSL_NO_ENGINE |
| if (e == NULL && pkey != NULL) |
| e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine; |
| /* Try to find an ENGINE which implements this method */ |
| if (e) { |
| if (!ENGINE_init(e)) { |
| EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB); |
| return NULL; |
| } |
| } else { |
| e = ENGINE_get_pkey_meth_engine(id); |
| } |
| |
| /* |
| * If an ENGINE handled this method look it up. Otherwise use internal |
| * tables. |
| */ |
| if (e) |
| pmeth = ENGINE_get_pkey_meth(e, id); |
| else |
| #endif |
| pmeth = EVP_PKEY_meth_find(id); |
| |
| if (pmeth == NULL) { |
| #ifndef OPENSSL_NO_ENGINE |
| ENGINE_finish(e); |
| #endif |
| EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM); |
| return NULL; |
| } |
| /* END legacy */ |
| |
| common: |
| ret = OPENSSL_zalloc(sizeof(*ret)); |
| if (ret == NULL) { |
| #ifndef OPENSSL_NO_ENGINE |
| ENGINE_finish(e); |
| #endif |
| EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| ret->engine = e; |
| ret->pmeth = pmeth; |
| ret->operation = EVP_PKEY_OP_UNDEFINED; |
| ret->pkey = pkey; |
| if (pkey != NULL) |
| EVP_PKEY_up_ref(pkey); |
| |
| if (pmeth != NULL && pmeth->init != NULL) { |
| if (pmeth->init(ret) <= 0) { |
| ret->pmeth = NULL; |
| EVP_PKEY_CTX_free(ret); |
| return NULL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx) |
| { |
| if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) { |
| if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL) |
| ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx); |
| EVP_KEYEXCH_free(ctx->op.kex.exchange); |
| } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) { |
| if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL) |
| ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx); |
| EVP_SIGNATURE_free(ctx->op.sig.signature); |
| } |
| } |
| |
| EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags) |
| { |
| EVP_PKEY_METHOD *pmeth; |
| |
| pmeth = OPENSSL_zalloc(sizeof(*pmeth)); |
| if (pmeth == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| pmeth->pkey_id = id; |
| pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC; |
| return pmeth; |
| } |
| |
| void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags, |
| const EVP_PKEY_METHOD *meth) |
| { |
| if (ppkey_id) |
| *ppkey_id = meth->pkey_id; |
| if (pflags) |
| *pflags = meth->flags; |
| } |
| |
| void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src) |
| { |
| |
| dst->init = src->init; |
| dst->copy = src->copy; |
| dst->cleanup = src->cleanup; |
| |
| dst->paramgen_init = src->paramgen_init; |
| dst->paramgen = src->paramgen; |
| |
| dst->keygen_init = src->keygen_init; |
| dst->keygen = src->keygen; |
| |
| dst->sign_init = src->sign_init; |
| dst->sign = src->sign; |
| |
| dst->verify_init = src->verify_init; |
| dst->verify = src->verify; |
| |
| dst->verify_recover_init = src->verify_recover_init; |
| dst->verify_recover = src->verify_recover; |
| |
| dst->signctx_init = src->signctx_init; |
| dst->signctx = src->signctx; |
| |
| dst->verifyctx_init = src->verifyctx_init; |
| dst->verifyctx = src->verifyctx; |
| |
| dst->encrypt_init = src->encrypt_init; |
| dst->encrypt = src->encrypt; |
| |
| dst->decrypt_init = src->decrypt_init; |
| dst->decrypt = src->decrypt; |
| |
| dst->derive_init = src->derive_init; |
| dst->derive = src->derive; |
| |
| dst->ctrl = src->ctrl; |
| dst->ctrl_str = src->ctrl_str; |
| |
| dst->check = src->check; |
| } |
| |
| void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth) |
| { |
| if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC)) |
| OPENSSL_free(pmeth); |
| } |
| |
| EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) |
| { |
| return int_ctx_new(pkey, e, -1); |
| } |
| |
| EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) |
| { |
| return int_ctx_new(NULL, e, id); |
| } |
| |
| EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx) |
| { |
| EVP_PKEY_CTX *rctx; |
| |
| if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL)) |
| && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx) |
| && pctx->op.kex.exchprovctx == NULL) |
| || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx) |
| && pctx->op.sig.sigprovctx == NULL))) |
| return NULL; |
| #ifndef OPENSSL_NO_ENGINE |
| /* Make sure it's safe to copy a pkey context using an ENGINE */ |
| if (pctx->engine && !ENGINE_init(pctx->engine)) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB); |
| return 0; |
| } |
| #endif |
| rctx = OPENSSL_zalloc(sizeof(*rctx)); |
| if (rctx == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| if (pctx->pkey != NULL) |
| EVP_PKEY_up_ref(pctx->pkey); |
| rctx->pkey = pctx->pkey; |
| rctx->operation = pctx->operation; |
| |
| if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) { |
| if (pctx->op.kex.exchange != NULL) { |
| rctx->op.kex.exchange = pctx->op.kex.exchange; |
| if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) { |
| OPENSSL_free(rctx); |
| return NULL; |
| } |
| } |
| if (pctx->op.kex.exchprovctx != NULL) { |
| if (!ossl_assert(pctx->op.kex.exchange != NULL)) |
| return NULL; |
| rctx->op.kex.exchprovctx |
| = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx); |
| if (rctx->op.kex.exchprovctx == NULL) { |
| EVP_KEYEXCH_free(rctx->op.kex.exchange); |
| OPENSSL_free(rctx); |
| return NULL; |
| } |
| return rctx; |
| } |
| } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) { |
| if (pctx->op.sig.signature != NULL) { |
| rctx->op.sig.signature = pctx->op.sig.signature; |
| if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) { |
| OPENSSL_free(rctx); |
| return NULL; |
| } |
| } |
| if (pctx->op.sig.sigprovctx != NULL) { |
| if (!ossl_assert(pctx->op.sig.signature != NULL)) |
| return NULL; |
| rctx->op.sig.sigprovctx |
| = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx); |
| if (rctx->op.sig.sigprovctx == NULL) { |
| EVP_SIGNATURE_free(rctx->op.sig.signature); |
| OPENSSL_free(rctx); |
| return NULL; |
| } |
| return rctx; |
| } |
| } |
| |
| rctx->pmeth = pctx->pmeth; |
| #ifndef OPENSSL_NO_ENGINE |
| rctx->engine = pctx->engine; |
| #endif |
| |
| if (pctx->peerkey) |
| EVP_PKEY_up_ref(pctx->peerkey); |
| rctx->peerkey = pctx->peerkey; |
| |
| if (pctx->pmeth->copy(rctx, pctx) > 0) |
| return rctx; |
| |
| rctx->pmeth = NULL; |
| EVP_PKEY_CTX_free(rctx); |
| return NULL; |
| |
| } |
| |
| int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth) |
| { |
| if (app_pkey_methods == NULL) { |
| app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp); |
| if (app_pkey_methods == NULL){ |
| EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) { |
| EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| sk_EVP_PKEY_METHOD_sort(app_pkey_methods); |
| return 1; |
| } |
| |
| void evp_app_cleanup_int(void) |
| { |
| if (app_pkey_methods != NULL) |
| sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free); |
| } |
| |
| int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth) |
| { |
| const EVP_PKEY_METHOD *ret; |
| |
| ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth); |
| |
| return ret == NULL ? 0 : 1; |
| } |
| |
| size_t EVP_PKEY_meth_get_count(void) |
| { |
| size_t rv = OSSL_NELEM(standard_methods); |
| |
| if (app_pkey_methods) |
| rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods); |
| return rv; |
| } |
| |
| const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx) |
| { |
| if (idx < OSSL_NELEM(standard_methods)) |
| return (standard_methods[idx])(); |
| if (app_pkey_methods == NULL) |
| return NULL; |
| idx -= OSSL_NELEM(standard_methods); |
| if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods)) |
| return NULL; |
| return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx); |
| } |
| |
| void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) |
| { |
| if (ctx == NULL) |
| return; |
| if (ctx->pmeth && ctx->pmeth->cleanup) |
| ctx->pmeth->cleanup(ctx); |
| |
| evp_pkey_ctx_free_old_ops(ctx); |
| |
| EVP_PKEY_free(ctx->pkey); |
| EVP_PKEY_free(ctx->peerkey); |
| #ifndef OPENSSL_NO_ENGINE |
| ENGINE_finish(ctx->engine); |
| #endif |
| OPENSSL_free(ctx); |
| } |
| |
| int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params) |
| { |
| if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
| && ctx->op.sig.sigprovctx != NULL |
| && ctx->op.sig.signature != NULL |
| && ctx->op.sig.signature->get_ctx_params != NULL) |
| return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx, |
| params); |
| return 0; |
| } |
| |
| const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx) |
| { |
| if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
| && ctx->op.sig.signature != NULL |
| && ctx->op.sig.signature->gettable_ctx_params != NULL) |
| return ctx->op.sig.signature->gettable_ctx_params(); |
| |
| return NULL; |
| } |
| |
| int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params) |
| { |
| if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx) |
| && ctx->op.kex.exchprovctx != NULL |
| && ctx->op.kex.exchange != NULL |
| && ctx->op.kex.exchange->set_ctx_params != NULL) |
| return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx, |
| params); |
| if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
| && ctx->op.sig.sigprovctx != NULL |
| && ctx->op.sig.signature != NULL |
| && ctx->op.sig.signature->set_ctx_params != NULL) |
| return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx, |
| params); |
| return 0; |
| } |
| |
| const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx) |
| { |
| if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx) |
| && ctx->op.kex.exchange != NULL |
| && ctx->op.kex.exchange->settable_ctx_params != NULL) |
| return ctx->op.kex.exchange->settable_ctx_params(); |
| if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
| && ctx->op.sig.signature != NULL |
| && ctx->op.sig.signature->settable_ctx_params != NULL) |
| return ctx->op.sig.signature->settable_ctx_params(); |
| |
| return NULL; |
| } |
| |
| #ifndef OPENSSL_NO_DH |
| int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad) |
| { |
| OSSL_PARAM dh_pad_params[2]; |
| unsigned int upad = pad; |
| |
| /* We use EVP_PKEY_CTX_ctrl return values */ |
| if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) { |
| ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); |
| return -2; |
| } |
| |
| /* TODO(3.0): Remove this eventually when no more legacy */ |
| if (ctx->op.kex.exchprovctx == NULL) |
| return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE, |
| EVP_PKEY_CTRL_DH_PAD, pad, NULL); |
| |
| dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad); |
| dh_pad_params[1] = OSSL_PARAM_construct_end(); |
| |
| return EVP_PKEY_CTX_set_params(ctx, dh_pad_params); |
| } |
| #endif |
| |
| int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) |
| { |
| OSSL_PARAM sig_md_params[3], *p = sig_md_params; |
| /* 80 should be big enough */ |
| char name[80] = ""; |
| const EVP_MD *tmp; |
| |
| if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) { |
| ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); |
| /* Uses the same return values as EVP_PKEY_CTX_ctrl */ |
| return -2; |
| } |
| |
| /* TODO(3.0): Remove this eventually when no more legacy */ |
| if (ctx->op.sig.sigprovctx == NULL) |
| return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, |
| EVP_PKEY_CTRL_GET_MD, 0, (void *)(md)); |
| |
| *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, |
| name, |
| sizeof(name)); |
| *p++ = OSSL_PARAM_construct_end(); |
| |
| if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params)) |
| return 0; |
| |
| tmp = EVP_get_digestbyname(name); |
| if (tmp == NULL) |
| return 0; |
| |
| *md = tmp; |
| |
| return 1; |
| } |
| |
| int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) |
| { |
| OSSL_PARAM sig_md_params[3], *p = sig_md_params; |
| size_t mdsize; |
| const char *name; |
| |
| if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) { |
| ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); |
| /* Uses the same return values as EVP_PKEY_CTX_ctrl */ |
| return -2; |
| } |
| |
| /* TODO(3.0): Remove this eventually when no more legacy */ |
| if (ctx->op.sig.sigprovctx == NULL) |
| return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, |
| EVP_PKEY_CTRL_MD, 0, (void *)(md)); |
| |
| if (md == NULL) { |
| name = ""; |
| mdsize = 0; |
| } else { |
| mdsize = EVP_MD_size(md); |
| name = EVP_MD_name(md); |
| } |
| |
| *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, |
| /* |
| * Cast away the const. This is read |
| * only so should be safe |
| */ |
| (char *)name, |
| strlen(name) + 1); |
| *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE, |
| &mdsize); |
| *p++ = OSSL_PARAM_construct_end(); |
| |
| return EVP_PKEY_CTX_set_params(ctx, sig_md_params); |
| } |
| |
| static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype, |
| int cmd, int p1, void *p2) |
| { |
| switch (cmd) { |
| #ifndef OPENSSL_NO_DH |
| case EVP_PKEY_CTRL_DH_PAD: |
| return EVP_PKEY_CTX_set_dh_pad(ctx, p1); |
| #endif |
| case EVP_PKEY_CTRL_MD: |
| return EVP_PKEY_CTX_set_signature_md(ctx, p2); |
| case EVP_PKEY_CTRL_GET_MD: |
| return EVP_PKEY_CTX_get_signature_md(ctx, p2); |
| } |
| return 0; |
| } |
| |
| int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, |
| int cmd, int p1, void *p2) |
| { |
| int ret; |
| |
| if (ctx == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED); |
| return -2; |
| } |
| |
| if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL) |
| || (EVP_PKEY_CTX_IS_DERIVE_OP(ctx) |
| && ctx->op.sig.sigprovctx != NULL)) |
| return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2); |
| |
| if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED); |
| return -2; |
| } |
| if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype)) |
| return -1; |
| |
| /* Skip the operation checks since this is called in a very early stage */ |
| if (ctx->pmeth->digest_custom != NULL) |
| goto doit; |
| |
| if (ctx->operation == EVP_PKEY_OP_UNDEFINED) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET); |
| return -1; |
| } |
| |
| if ((optype != -1) && !(ctx->operation & optype)) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION); |
| return -1; |
| } |
| |
| doit: |
| ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2); |
| |
| if (ret == -2) |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED); |
| |
| return ret; |
| } |
| |
| int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype, |
| int cmd, uint64_t value) |
| { |
| return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value); |
| } |
| |
| static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name, |
| const char *value) |
| { |
| #ifndef OPENSSL_NO_DH |
| if (strcmp(name, "dh_pad") == 0) { |
| int pad; |
| |
| pad = atoi(value); |
| return EVP_PKEY_CTX_set_dh_pad(ctx, pad); |
| } |
| #endif |
| if (strcmp(name, "digest") == 0) { |
| int ret; |
| EVP_MD *md; |
| |
| if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL) |
| return 0; |
| md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov), |
| value, NULL); |
| if (md == NULL) |
| return 0; |
| ret = EVP_PKEY_CTX_set_signature_md(ctx, md); |
| EVP_MD_meth_free(md); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, |
| const char *name, const char *value) |
| { |
| if (ctx == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED); |
| return -2; |
| } |
| |
| if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL) |
| || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
| && ctx->op.sig.sigprovctx != NULL)) |
| return legacy_ctrl_str_to_param(ctx, name, value); |
| |
| if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED); |
| return -2; |
| } |
| if (strcmp(name, "digest") == 0) |
| return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, |
| value); |
| return ctx->pmeth->ctrl_str(ctx, name, value); |
| } |
| |
| /* Utility functions to send a string of hex string to a ctrl */ |
| |
| int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str) |
| { |
| size_t len; |
| |
| len = strlen(str); |
| if (len > INT_MAX) |
| return -1; |
| return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str); |
| } |
| |
| int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex) |
| { |
| unsigned char *bin; |
| long binlen; |
| int rv = -1; |
| |
| bin = OPENSSL_hexstr2buf(hex, &binlen); |
| if (bin == NULL) |
| return 0; |
| if (binlen <= INT_MAX) |
| rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin); |
| OPENSSL_free(bin); |
| return rv; |
| } |
| |
| /* Pass a message digest to a ctrl */ |
| int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md) |
| { |
| const EVP_MD *m; |
| |
| if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) { |
| EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST); |
| return 0; |
| } |
| return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m); |
| } |
| |
| int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx) |
| { |
| return ctx->operation; |
| } |
| |
| void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen) |
| { |
| ctx->keygen_info = dat; |
| ctx->keygen_info_count = datlen; |
| } |
| |
| void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data) |
| { |
| ctx->data = data; |
| } |
| |
| void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx) |
| { |
| return ctx->data; |
| } |
| |
| EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) |
| { |
| return ctx->pkey; |
| } |
| |
| EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx) |
| { |
| return ctx->peerkey; |
| } |
| |
| void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data) |
| { |
| ctx->app_data = data; |
| } |
| |
| void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx) |
| { |
| return ctx->app_data; |
| } |
| |
| void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth, |
| int (*init) (EVP_PKEY_CTX *ctx)) |
| { |
| pmeth->init = init; |
| } |
| |
| void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth, |
| int (*copy) (EVP_PKEY_CTX *dst, |
| const EVP_PKEY_CTX *src)) |
| { |
| pmeth->copy = copy; |
| } |
| |
| void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth, |
| void (*cleanup) (EVP_PKEY_CTX *ctx)) |
| { |
| pmeth->cleanup = cleanup; |
| } |
| |
| void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth, |
| int (*paramgen_init) (EVP_PKEY_CTX *ctx), |
| int (*paramgen) (EVP_PKEY_CTX *ctx, |
| EVP_PKEY *pkey)) |
| { |
| pmeth->paramgen_init = paramgen_init; |
| pmeth->paramgen = paramgen; |
| } |
| |
| void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth, |
| int (*keygen_init) (EVP_PKEY_CTX *ctx), |
| int (*keygen) (EVP_PKEY_CTX *ctx, |
| EVP_PKEY *pkey)) |
| { |
| pmeth->keygen_init = keygen_init; |
| pmeth->keygen = keygen; |
| } |
| |
| void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth, |
| int (*sign_init) (EVP_PKEY_CTX *ctx), |
| int (*sign) (EVP_PKEY_CTX *ctx, |
| unsigned char *sig, size_t *siglen, |
| const unsigned char *tbs, |
| size_t tbslen)) |
| { |
| pmeth->sign_init = sign_init; |
| pmeth->sign = sign; |
| } |
| |
| void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth, |
| int (*verify_init) (EVP_PKEY_CTX *ctx), |
| int (*verify) (EVP_PKEY_CTX *ctx, |
| const unsigned char *sig, |
| size_t siglen, |
| const unsigned char *tbs, |
| size_t tbslen)) |
| { |
| pmeth->verify_init = verify_init; |
| pmeth->verify = verify; |
| } |
| |
| void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth, |
| int (*verify_recover_init) (EVP_PKEY_CTX |
| *ctx), |
| int (*verify_recover) (EVP_PKEY_CTX |
| *ctx, |
| unsigned char |
| *sig, |
| size_t *siglen, |
| const unsigned |
| char *tbs, |
| size_t tbslen)) |
| { |
| pmeth->verify_recover_init = verify_recover_init; |
| pmeth->verify_recover = verify_recover; |
| } |
| |
| void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth, |
| int (*signctx_init) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx), |
| int (*signctx) (EVP_PKEY_CTX *ctx, |
| unsigned char *sig, |
| size_t *siglen, |
| EVP_MD_CTX *mctx)) |
| { |
| pmeth->signctx_init = signctx_init; |
| pmeth->signctx = signctx; |
| } |
| |
| void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth, |
| int (*verifyctx_init) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx), |
| int (*verifyctx) (EVP_PKEY_CTX *ctx, |
| const unsigned char *sig, |
| int siglen, |
| EVP_MD_CTX *mctx)) |
| { |
| pmeth->verifyctx_init = verifyctx_init; |
| pmeth->verifyctx = verifyctx; |
| } |
| |
| void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth, |
| int (*encrypt_init) (EVP_PKEY_CTX *ctx), |
| int (*encryptfn) (EVP_PKEY_CTX *ctx, |
| unsigned char *out, |
| size_t *outlen, |
| const unsigned char *in, |
| size_t inlen)) |
| { |
| pmeth->encrypt_init = encrypt_init; |
| pmeth->encrypt = encryptfn; |
| } |
| |
| void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth, |
| int (*decrypt_init) (EVP_PKEY_CTX *ctx), |
| int (*decrypt) (EVP_PKEY_CTX *ctx, |
| unsigned char *out, |
| size_t *outlen, |
| const unsigned char *in, |
| size_t inlen)) |
| { |
| pmeth->decrypt_init = decrypt_init; |
| pmeth->decrypt = decrypt; |
| } |
| |
| void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth, |
| int (*derive_init) (EVP_PKEY_CTX *ctx), |
| int (*derive) (EVP_PKEY_CTX *ctx, |
| unsigned char *key, |
| size_t *keylen)) |
| { |
| pmeth->derive_init = derive_init; |
| pmeth->derive = derive; |
| } |
| |
| void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth, |
| int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, |
| void *p2), |
| int (*ctrl_str) (EVP_PKEY_CTX *ctx, |
| const char *type, |
| const char *value)) |
| { |
| pmeth->ctrl = ctrl; |
| pmeth->ctrl_str = ctrl_str; |
| } |
| |
| void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth, |
| int (*check) (EVP_PKEY *pkey)) |
| { |
| pmeth->check = check; |
| } |
| |
| void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth, |
| int (*check) (EVP_PKEY *pkey)) |
| { |
| pmeth->public_check = check; |
| } |
| |
| void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth, |
| int (*check) (EVP_PKEY *pkey)) |
| { |
| pmeth->param_check = check; |
| } |
| |
| void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth, |
| int (*digest_custom) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx)) |
| { |
| pmeth->digest_custom = digest_custom; |
| } |
| |
| void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth, |
| int (**pinit) (EVP_PKEY_CTX *ctx)) |
| { |
| *pinit = pmeth->init; |
| } |
| |
| void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth, |
| int (**pcopy) (EVP_PKEY_CTX *dst, |
| const EVP_PKEY_CTX *src)) |
| { |
| *pcopy = pmeth->copy; |
| } |
| |
| void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth, |
| void (**pcleanup) (EVP_PKEY_CTX *ctx)) |
| { |
| *pcleanup = pmeth->cleanup; |
| } |
| |
| void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth, |
| int (**pparamgen_init) (EVP_PKEY_CTX *ctx), |
| int (**pparamgen) (EVP_PKEY_CTX *ctx, |
| EVP_PKEY *pkey)) |
| { |
| if (pparamgen_init) |
| *pparamgen_init = pmeth->paramgen_init; |
| if (pparamgen) |
| *pparamgen = pmeth->paramgen; |
| } |
| |
| void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth, |
| int (**pkeygen_init) (EVP_PKEY_CTX *ctx), |
| int (**pkeygen) (EVP_PKEY_CTX *ctx, |
| EVP_PKEY *pkey)) |
| { |
| if (pkeygen_init) |
| *pkeygen_init = pmeth->keygen_init; |
| if (pkeygen) |
| *pkeygen = pmeth->keygen; |
| } |
| |
| void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth, |
| int (**psign_init) (EVP_PKEY_CTX *ctx), |
| int (**psign) (EVP_PKEY_CTX *ctx, |
| unsigned char *sig, size_t *siglen, |
| const unsigned char *tbs, |
| size_t tbslen)) |
| { |
| if (psign_init) |
| *psign_init = pmeth->sign_init; |
| if (psign) |
| *psign = pmeth->sign; |
| } |
| |
| void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth, |
| int (**pverify_init) (EVP_PKEY_CTX *ctx), |
| int (**pverify) (EVP_PKEY_CTX *ctx, |
| const unsigned char *sig, |
| size_t siglen, |
| const unsigned char *tbs, |
| size_t tbslen)) |
| { |
| if (pverify_init) |
| *pverify_init = pmeth->verify_init; |
| if (pverify) |
| *pverify = pmeth->verify; |
| } |
| |
| void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth, |
| int (**pverify_recover_init) (EVP_PKEY_CTX |
| *ctx), |
| int (**pverify_recover) (EVP_PKEY_CTX |
| *ctx, |
| unsigned char |
| *sig, |
| size_t *siglen, |
| const unsigned |
| char *tbs, |
| size_t tbslen)) |
| { |
| if (pverify_recover_init) |
| *pverify_recover_init = pmeth->verify_recover_init; |
| if (pverify_recover) |
| *pverify_recover = pmeth->verify_recover; |
| } |
| |
| void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth, |
| int (**psignctx_init) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx), |
| int (**psignctx) (EVP_PKEY_CTX *ctx, |
| unsigned char *sig, |
| size_t *siglen, |
| EVP_MD_CTX *mctx)) |
| { |
| if (psignctx_init) |
| *psignctx_init = pmeth->signctx_init; |
| if (psignctx) |
| *psignctx = pmeth->signctx; |
| } |
| |
| void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth, |
| int (**pverifyctx_init) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx), |
| int (**pverifyctx) (EVP_PKEY_CTX *ctx, |
| const unsigned char *sig, |
| int siglen, |
| EVP_MD_CTX *mctx)) |
| { |
| if (pverifyctx_init) |
| *pverifyctx_init = pmeth->verifyctx_init; |
| if (pverifyctx) |
| *pverifyctx = pmeth->verifyctx; |
| } |
| |
| void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth, |
| int (**pencrypt_init) (EVP_PKEY_CTX *ctx), |
| int (**pencryptfn) (EVP_PKEY_CTX *ctx, |
| unsigned char *out, |
| size_t *outlen, |
| const unsigned char *in, |
| size_t inlen)) |
| { |
| if (pencrypt_init) |
| *pencrypt_init = pmeth->encrypt_init; |
| if (pencryptfn) |
| *pencryptfn = pmeth->encrypt; |
| } |
| |
| void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth, |
| int (**pdecrypt_init) (EVP_PKEY_CTX *ctx), |
| int (**pdecrypt) (EVP_PKEY_CTX *ctx, |
| unsigned char *out, |
| size_t *outlen, |
| const unsigned char *in, |
| size_t inlen)) |
| { |
| if (pdecrypt_init) |
| *pdecrypt_init = pmeth->decrypt_init; |
| if (pdecrypt) |
| *pdecrypt = pmeth->decrypt; |
| } |
| |
| void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth, |
| int (**pderive_init) (EVP_PKEY_CTX *ctx), |
| int (**pderive) (EVP_PKEY_CTX *ctx, |
| unsigned char *key, |
| size_t *keylen)) |
| { |
| if (pderive_init) |
| *pderive_init = pmeth->derive_init; |
| if (pderive) |
| *pderive = pmeth->derive; |
| } |
| |
| void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth, |
| int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1, |
| void *p2), |
| int (**pctrl_str) (EVP_PKEY_CTX *ctx, |
| const char *type, |
| const char *value)) |
| { |
| if (pctrl) |
| *pctrl = pmeth->ctrl; |
| if (pctrl_str) |
| *pctrl_str = pmeth->ctrl_str; |
| } |
| |
| void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth, |
| int (**pcheck) (EVP_PKEY *pkey)) |
| { |
| if (pcheck != NULL) |
| *pcheck = pmeth->check; |
| } |
| |
| void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth, |
| int (**pcheck) (EVP_PKEY *pkey)) |
| { |
| if (pcheck != NULL) |
| *pcheck = pmeth->public_check; |
| } |
| |
| void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth, |
| int (**pcheck) (EVP_PKEY *pkey)) |
| { |
| if (pcheck != NULL) |
| *pcheck = pmeth->param_check; |
| } |
| |
| void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth, |
| int (**pdigest_custom) (EVP_PKEY_CTX *ctx, |
| EVP_MD_CTX *mctx)) |
| { |
| if (pdigest_custom != NULL) |
| *pdigest_custom = pmeth->digest_custom; |
| } |
