mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
469 lines
15 KiB
C
469 lines
15 KiB
C
/*
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* Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/crypto.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/core_names.h>
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#include <openssl/err.h>
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#include <openssl/params.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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#include <openssl/proverr.h>
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#include "internal/nelem.h"
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#include "internal/sizes.h"
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#include "prov/providercommon.h"
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#include "prov/implementations.h"
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#include "prov/provider_ctx.h"
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#include "prov/der_ecx.h"
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#include "crypto/ecx.h"
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#ifdef S390X_EC_ASM
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# include "s390x_arch.h"
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# define S390X_CAN_SIGN(edtype) \
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((OPENSSL_s390xcap_P.pcc[1] & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_##edtype)) \
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&& (OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_SIGN_##edtype)) \
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&& (OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_VERIFY_##edtype)))
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static int s390x_ed25519_digestsign(const ECX_KEY *edkey, unsigned char *sig,
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const unsigned char *tbs, size_t tbslen);
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static int s390x_ed448_digestsign(const ECX_KEY *edkey, unsigned char *sig,
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const unsigned char *tbs, size_t tbslen);
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static int s390x_ed25519_digestverify(const ECX_KEY *edkey,
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const unsigned char *sig,
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const unsigned char *tbs, size_t tbslen);
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static int s390x_ed448_digestverify(const ECX_KEY *edkey,
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const unsigned char *sig,
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const unsigned char *tbs, size_t tbslen);
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#endif /* S390X_EC_ASM */
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static OSSL_FUNC_signature_newctx_fn eddsa_newctx;
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static OSSL_FUNC_signature_digest_sign_init_fn eddsa_digest_signverify_init;
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static OSSL_FUNC_signature_digest_sign_fn ed25519_digest_sign;
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static OSSL_FUNC_signature_digest_sign_fn ed448_digest_sign;
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static OSSL_FUNC_signature_digest_verify_fn ed25519_digest_verify;
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static OSSL_FUNC_signature_digest_verify_fn ed448_digest_verify;
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static OSSL_FUNC_signature_freectx_fn eddsa_freectx;
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static OSSL_FUNC_signature_dupctx_fn eddsa_dupctx;
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static OSSL_FUNC_signature_get_ctx_params_fn eddsa_get_ctx_params;
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static OSSL_FUNC_signature_gettable_ctx_params_fn eddsa_gettable_ctx_params;
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typedef struct {
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OSSL_LIB_CTX *libctx;
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ECX_KEY *key;
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/* The Algorithm Identifier of the signature algorithm */
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unsigned char aid_buf[OSSL_MAX_ALGORITHM_ID_SIZE];
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unsigned char *aid;
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size_t aid_len;
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} PROV_EDDSA_CTX;
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static void *eddsa_newctx(void *provctx, const char *propq_unused)
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{
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PROV_EDDSA_CTX *peddsactx;
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if (!ossl_prov_is_running())
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return NULL;
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peddsactx = OPENSSL_zalloc(sizeof(PROV_EDDSA_CTX));
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if (peddsactx == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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peddsactx->libctx = PROV_LIBCTX_OF(provctx);
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return peddsactx;
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}
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static int eddsa_digest_signverify_init(void *vpeddsactx, const char *mdname,
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void *vedkey,
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ossl_unused const OSSL_PARAM params[])
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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ECX_KEY *edkey = (ECX_KEY *)vedkey;
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WPACKET pkt;
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int ret;
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if (!ossl_prov_is_running())
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return 0;
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if (mdname != NULL && mdname[0] != '\0') {
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ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST);
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return 0;
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}
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if (edkey == NULL) {
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if (peddsactx->key != NULL)
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/* there is nothing to do on reinit */
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return 1;
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ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
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return 0;
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}
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if (!ossl_ecx_key_up_ref(edkey)) {
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ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
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return 0;
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}
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/*
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* We do not care about DER writing errors.
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* All it really means is that for some reason, there's no
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* AlgorithmIdentifier to be had, but the operation itself is
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* still valid, just as long as it's not used to construct
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* anything that needs an AlgorithmIdentifier.
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*/
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peddsactx->aid_len = 0;
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ret = WPACKET_init_der(&pkt, peddsactx->aid_buf, sizeof(peddsactx->aid_buf));
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switch (edkey->type) {
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case ECX_KEY_TYPE_ED25519:
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ret = ret && ossl_DER_w_algorithmIdentifier_ED25519(&pkt, -1, edkey);
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break;
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case ECX_KEY_TYPE_ED448:
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ret = ret && ossl_DER_w_algorithmIdentifier_ED448(&pkt, -1, edkey);
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break;
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default:
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/* Should never happen */
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ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
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ossl_ecx_key_free(edkey);
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return 0;
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}
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if (ret && WPACKET_finish(&pkt)) {
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WPACKET_get_total_written(&pkt, &peddsactx->aid_len);
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peddsactx->aid = WPACKET_get_curr(&pkt);
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}
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WPACKET_cleanup(&pkt);
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peddsactx->key = edkey;
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return 1;
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}
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int ed25519_digest_sign(void *vpeddsactx, unsigned char *sigret,
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size_t *siglen, size_t sigsize,
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const unsigned char *tbs, size_t tbslen)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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const ECX_KEY *edkey = peddsactx->key;
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if (!ossl_prov_is_running())
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return 0;
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if (sigret == NULL) {
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*siglen = ED25519_SIGSIZE;
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return 1;
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}
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if (sigsize < ED25519_SIGSIZE) {
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ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
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return 0;
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}
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if (edkey->privkey == NULL) {
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ERR_raise(ERR_LIB_PROV, PROV_R_NOT_A_PRIVATE_KEY);
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return 0;
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}
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#ifdef S390X_EC_ASM
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if (S390X_CAN_SIGN(ED25519)) {
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if (s390x_ed25519_digestsign(edkey, sigret, tbs, tbslen) == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SIGN);
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return 0;
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}
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*siglen = ED25519_SIGSIZE;
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return 1;
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}
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#endif /* S390X_EC_ASM */
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if (ossl_ed25519_sign(sigret, tbs, tbslen, edkey->pubkey, edkey->privkey,
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peddsactx->libctx, NULL) == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SIGN);
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return 0;
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}
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*siglen = ED25519_SIGSIZE;
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return 1;
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}
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int ed448_digest_sign(void *vpeddsactx, unsigned char *sigret,
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size_t *siglen, size_t sigsize,
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const unsigned char *tbs, size_t tbslen)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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const ECX_KEY *edkey = peddsactx->key;
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if (!ossl_prov_is_running())
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return 0;
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if (sigret == NULL) {
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*siglen = ED448_SIGSIZE;
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return 1;
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}
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if (sigsize < ED448_SIGSIZE) {
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ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
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return 0;
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}
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if (edkey->privkey == NULL) {
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ERR_raise(ERR_LIB_PROV, PROV_R_NOT_A_PRIVATE_KEY);
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return 0;
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}
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#ifdef S390X_EC_ASM
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if (S390X_CAN_SIGN(ED448)) {
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if (s390x_ed448_digestsign(edkey, sigret, tbs, tbslen) == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SIGN);
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return 0;
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}
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*siglen = ED448_SIGSIZE;
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return 1;
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}
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#endif /* S390X_EC_ASM */
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if (ossl_ed448_sign(peddsactx->libctx, sigret, tbs, tbslen, edkey->pubkey,
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edkey->privkey, NULL, 0, edkey->propq) == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SIGN);
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return 0;
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}
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*siglen = ED448_SIGSIZE;
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return 1;
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}
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int ed25519_digest_verify(void *vpeddsactx, const unsigned char *sig,
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size_t siglen, const unsigned char *tbs,
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size_t tbslen)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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const ECX_KEY *edkey = peddsactx->key;
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if (!ossl_prov_is_running() || siglen != ED25519_SIGSIZE)
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return 0;
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#ifdef S390X_EC_ASM
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if (S390X_CAN_SIGN(ED25519))
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return s390x_ed25519_digestverify(edkey, sig, tbs, tbslen);
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#endif /* S390X_EC_ASM */
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return ossl_ed25519_verify(tbs, tbslen, sig, edkey->pubkey,
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peddsactx->libctx, edkey->propq);
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}
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int ed448_digest_verify(void *vpeddsactx, const unsigned char *sig,
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size_t siglen, const unsigned char *tbs,
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size_t tbslen)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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const ECX_KEY *edkey = peddsactx->key;
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if (!ossl_prov_is_running() || siglen != ED448_SIGSIZE)
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return 0;
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#ifdef S390X_EC_ASM
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if (S390X_CAN_SIGN(ED448))
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return s390x_ed448_digestverify(edkey, sig, tbs, tbslen);
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#endif /* S390X_EC_ASM */
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return ossl_ed448_verify(peddsactx->libctx, tbs, tbslen, sig, edkey->pubkey,
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NULL, 0, edkey->propq);
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}
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static void eddsa_freectx(void *vpeddsactx)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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ossl_ecx_key_free(peddsactx->key);
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OPENSSL_free(peddsactx);
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}
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static void *eddsa_dupctx(void *vpeddsactx)
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{
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PROV_EDDSA_CTX *srcctx = (PROV_EDDSA_CTX *)vpeddsactx;
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PROV_EDDSA_CTX *dstctx;
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if (!ossl_prov_is_running())
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return NULL;
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dstctx = OPENSSL_zalloc(sizeof(*srcctx));
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if (dstctx == NULL)
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return NULL;
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*dstctx = *srcctx;
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dstctx->key = NULL;
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if (srcctx->key != NULL && !ossl_ecx_key_up_ref(srcctx->key)) {
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ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
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goto err;
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}
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dstctx->key = srcctx->key;
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return dstctx;
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err:
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eddsa_freectx(dstctx);
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return NULL;
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}
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static int eddsa_get_ctx_params(void *vpeddsactx, OSSL_PARAM *params)
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{
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PROV_EDDSA_CTX *peddsactx = (PROV_EDDSA_CTX *)vpeddsactx;
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OSSL_PARAM *p;
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if (peddsactx == NULL)
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return 0;
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p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID);
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if (p != NULL && !OSSL_PARAM_set_octet_string(p, peddsactx->aid,
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peddsactx->aid_len))
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return 0;
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return 1;
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}
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static const OSSL_PARAM known_gettable_ctx_params[] = {
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OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0),
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *eddsa_gettable_ctx_params(ossl_unused void *vpeddsactx,
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ossl_unused void *provctx)
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{
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return known_gettable_ctx_params;
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}
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const OSSL_DISPATCH ossl_ed25519_signature_functions[] = {
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{ OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))eddsa_newctx },
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{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
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(void (*)(void))eddsa_digest_signverify_init },
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{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN,
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(void (*)(void))ed25519_digest_sign },
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{ OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
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(void (*)(void))eddsa_digest_signverify_init },
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{ OSSL_FUNC_SIGNATURE_DIGEST_VERIFY,
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(void (*)(void))ed25519_digest_verify },
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{ OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))eddsa_freectx },
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{ OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))eddsa_dupctx },
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{ OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))eddsa_get_ctx_params },
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{ OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
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(void (*)(void))eddsa_gettable_ctx_params },
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{ 0, NULL }
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};
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const OSSL_DISPATCH ossl_ed448_signature_functions[] = {
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{ OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))eddsa_newctx },
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{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
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(void (*)(void))eddsa_digest_signverify_init },
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{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN,
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(void (*)(void))ed448_digest_sign },
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{ OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
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(void (*)(void))eddsa_digest_signverify_init },
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{ OSSL_FUNC_SIGNATURE_DIGEST_VERIFY,
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(void (*)(void))ed448_digest_verify },
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{ OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))eddsa_freectx },
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{ OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))eddsa_dupctx },
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{ OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))eddsa_get_ctx_params },
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{ OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
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(void (*)(void))eddsa_gettable_ctx_params },
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{ 0, NULL }
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};
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#ifdef S390X_EC_ASM
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static int s390x_ed25519_digestsign(const ECX_KEY *edkey, unsigned char *sig,
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const unsigned char *tbs, size_t tbslen)
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{
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int rc;
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union {
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struct {
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unsigned char sig[64];
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unsigned char priv[32];
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} ed25519;
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unsigned long long buff[512];
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} param;
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memset(¶m, 0, sizeof(param));
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memcpy(param.ed25519.priv, edkey->privkey, sizeof(param.ed25519.priv));
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rc = s390x_kdsa(S390X_EDDSA_SIGN_ED25519, ¶m.ed25519, tbs, tbslen);
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OPENSSL_cleanse(param.ed25519.priv, sizeof(param.ed25519.priv));
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if (rc != 0)
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return 0;
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s390x_flip_endian32(sig, param.ed25519.sig);
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s390x_flip_endian32(sig + 32, param.ed25519.sig + 32);
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return 1;
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}
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static int s390x_ed448_digestsign(const ECX_KEY *edkey, unsigned char *sig,
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const unsigned char *tbs, size_t tbslen)
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{
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int rc;
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union {
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struct {
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unsigned char sig[128];
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unsigned char priv[64];
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} ed448;
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unsigned long long buff[512];
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} param;
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memset(¶m, 0, sizeof(param));
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memcpy(param.ed448.priv + 64 - 57, edkey->privkey, 57);
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rc = s390x_kdsa(S390X_EDDSA_SIGN_ED448, ¶m.ed448, tbs, tbslen);
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OPENSSL_cleanse(param.ed448.priv, sizeof(param.ed448.priv));
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if (rc != 0)
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return 0;
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s390x_flip_endian64(param.ed448.sig, param.ed448.sig);
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s390x_flip_endian64(param.ed448.sig + 64, param.ed448.sig + 64);
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memcpy(sig, param.ed448.sig, 57);
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memcpy(sig + 57, param.ed448.sig + 64, 57);
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return 1;
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}
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static int s390x_ed25519_digestverify(const ECX_KEY *edkey,
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const unsigned char *sig,
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const unsigned char *tbs, size_t tbslen)
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{
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union {
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struct {
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unsigned char sig[64];
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unsigned char pub[32];
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} ed25519;
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unsigned long long buff[512];
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} param;
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memset(¶m, 0, sizeof(param));
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s390x_flip_endian32(param.ed25519.sig, sig);
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s390x_flip_endian32(param.ed25519.sig + 32, sig + 32);
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s390x_flip_endian32(param.ed25519.pub, edkey->pubkey);
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return s390x_kdsa(S390X_EDDSA_VERIFY_ED25519,
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¶m.ed25519, tbs, tbslen) == 0 ? 1 : 0;
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}
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static int s390x_ed448_digestverify(const ECX_KEY *edkey,
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const unsigned char *sig,
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|
const unsigned char *tbs,
|
|
size_t tbslen)
|
|
{
|
|
union {
|
|
struct {
|
|
unsigned char sig[128];
|
|
unsigned char pub[64];
|
|
} ed448;
|
|
unsigned long long buff[512];
|
|
} param;
|
|
|
|
memset(¶m, 0, sizeof(param));
|
|
memcpy(param.ed448.sig, sig, 57);
|
|
s390x_flip_endian64(param.ed448.sig, param.ed448.sig);
|
|
memcpy(param.ed448.sig + 64, sig + 57, 57);
|
|
s390x_flip_endian64(param.ed448.sig + 64, param.ed448.sig + 64);
|
|
memcpy(param.ed448.pub, edkey->pubkey, 57);
|
|
s390x_flip_endian64(param.ed448.pub, param.ed448.pub);
|
|
|
|
return s390x_kdsa(S390X_EDDSA_VERIFY_ED448,
|
|
¶m.ed448, tbs, tbslen) == 0 ? 1 : 0;
|
|
}
|
|
|
|
#endif /* S390X_EC_ASM */
|