} ecx_key_op_t;
/* Setup EVP_PKEY using public, private or generation */
-static int ecx_key_op(EVP_PKEY *pkey, const X509_ALGOR *palg,
+static int ecx_key_op(EVP_PKEY *pkey, int id, const X509_ALGOR *palg,
const unsigned char *p, int plen, ecx_key_op_t op)
{
X25519_KEY *xkey;
OPENSSL_free(xkey);
return 0;
}
- if (pkey->ameth->pkey_id == NID_X25519) {
+ if (id == EVP_PKEY_X25519) {
xkey->privkey[0] &= 248;
xkey->privkey[31] &= 127;
xkey->privkey[31] |= 64;
} else {
memcpy(xkey->privkey, p, X25519_KEYLEN);
}
- if (pkey->ameth->pkey_id == NID_X25519)
+ if (id == EVP_PKEY_X25519)
X25519_public_from_private(xkey->pubkey, xkey->privkey);
else
ED25519_public_from_private(xkey->pubkey, xkey->privkey);
}
- EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, xkey);
+ EVP_PKEY_assign(pkey, id, xkey);
return 1;
}
if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
return 0;
- return ecx_key_op(pkey, palg, p, pklen, X25519_PUBLIC);
+ return ecx_key_op(pkey, pkey->ameth->pkey_id, palg, p, pklen,
+ X25519_PUBLIC);
}
static int ecx_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
plen = ASN1_STRING_length(oct);
}
- rv = ecx_key_op(pkey, palg, p, plen, X25519_PRIVATE);
+ rv = ecx_key_op(pkey, pkey->ameth->pkey_id, palg, p, plen, X25519_PRIVATE);
ASN1_OCTET_STRING_free(oct);
return rv;
}
X25519_KEY *xkey = pkey->pkey.ptr;
if (xkey)
- OPENSSL_secure_free(xkey->privkey);
+ OPENSSL_secure_clear_free(xkey->privkey, X25519_KEYLEN);
OPENSSL_free(xkey);
}
switch (op) {
case ASN1_PKEY_CTRL_SET1_TLS_ENCPT:
- return ecx_key_op(pkey, NULL, arg2, arg1, X25519_PUBLIC);
+ return ecx_key_op(pkey, EVP_PKEY_X25519, NULL, arg2, arg1,
+ X25519_PUBLIC);
case ASN1_PKEY_CTRL_GET1_TLS_ENCPT:
if (pkey->pkey.ptr != NULL) {
}
const EVP_PKEY_ASN1_METHOD ecx25519_asn1_meth = {
- NID_X25519,
- NID_X25519,
+ EVP_PKEY_X25519,
+ EVP_PKEY_X25519,
0,
"X25519",
"OpenSSL X25519 algorithm",
return ED25519_SIGSIZE;
}
+static int ecd_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
+ X509_ALGOR *sigalg, ASN1_BIT_STRING *str,
+ EVP_PKEY *pkey)
+{
+ const ASN1_OBJECT *obj;
+ int ptype;
+
+ X509_ALGOR_get0(&obj, &ptype, NULL, sigalg);
+ /* Sanity check: make sure it is ED25519 with absent parameters */
+ if (OBJ_obj2nid(obj) != NID_ED25519 || ptype != V_ASN1_UNDEF) {
+ ECerr(EC_F_ECD_ITEM_VERIFY, EC_R_INVALID_ENCODING);
+ return 0;
+ }
+
+ if (!EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey))
+ return 0;
+
+ return 2;
+}
+
+static int ecd_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
+ X509_ALGOR *alg1, X509_ALGOR *alg2,
+ ASN1_BIT_STRING *str)
+{
+ /* Set algorithms identifiers */
+ X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
+ if (alg2)
+ X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
+ /* Algorithm idetifiers set: carry on as normal */
+ return 3;
+}
+
+static int ecd_sig_info_set(X509_SIG_INFO *siginf, const X509_ALGOR *alg,
+ const ASN1_STRING *sig)
+{
+ X509_SIG_INFO_set(siginf, NID_undef, NID_ED25519, X25519_SECURITY_BITS,
+ X509_SIG_INFO_TLS);
+ return 1;
+}
+
const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth = {
- NID_ED25519,
- NID_ED25519,
+ EVP_PKEY_ED25519,
+ EVP_PKEY_ED25519,
0,
"ED25519",
"OpenSSL ED25519 algorithm",
ecx_free,
0,
NULL,
- NULL
+ NULL,
+ ecd_item_verify,
+ ecd_item_sign,
+ ecd_sig_info_set
};
static int pkey_ecx_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
- return ecx_key_op(pkey, NULL, NULL, 0, X25519_KEYGEN);
+ return ecx_key_op(pkey, ctx->pmeth->pkey_id, NULL, NULL, 0, X25519_KEYGEN);
}
static int pkey_ecx_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
}
const EVP_PKEY_METHOD ecx25519_pkey_meth = {
- NID_X25519,
+ EVP_PKEY_X25519,
0, 0, 0, 0, 0, 0, 0,
pkey_ecx_keygen,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
pkey_ecx_ctrl,
0
};
+
+static int pkey_ecd_digestsign(EVP_MD_CTX *ctx, unsigned char *sig,
+ size_t *siglen, const unsigned char *tbs,
+ size_t tbslen)
+{
+ const X25519_KEY *edkey = EVP_MD_CTX_pkey_ctx(ctx)->pkey->pkey.ptr;
+
+ if (sig == NULL) {
+ *siglen = ED25519_SIGSIZE;
+ return 1;
+ }
+ if (*siglen < ED25519_SIGSIZE) {
+ ECerr(EC_F_PKEY_ECD_DIGESTSIGN, EC_R_BUFFER_TOO_SMALL);
+ return 0;
+ }
+
+ if (ED25519_sign(sig, tbs, tbslen, edkey->pubkey, edkey->privkey) == 0)
+ return 0;
+ *siglen = ED25519_SIGSIZE;
+ return 1;
+}
+
+static int pkey_ecd_digestverify(EVP_MD_CTX *ctx, const unsigned char *sig,
+ size_t siglen, const unsigned char *tbs,
+ size_t tbslen)
+{
+ const X25519_KEY *edkey = EVP_MD_CTX_pkey_ctx(ctx)->pkey->pkey.ptr;
+
+ if (siglen != ED25519_SIGSIZE)
+ return 0;
+
+ return ED25519_verify(tbs, tbslen, sig, edkey->pubkey);
+}
+
+static int pkey_ecd_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+{
+ switch (type) {
+ case EVP_PKEY_CTRL_MD:
+ /* Only NULL allowed as digest */
+ if (p2 == NULL)
+ return 1;
+ ECerr(EC_F_PKEY_ECD_CTRL, EC_R_INVALID_DIGEST_TYPE);
+ return 0;
+
+ case EVP_PKEY_CTRL_DIGESTINIT:
+ return 1;
+ }
+ return -2;
+}
+
+const EVP_PKEY_METHOD ed25519_pkey_meth = {
+ EVP_PKEY_ED25519, EVP_PKEY_FLAG_SIGCTX_CUSTOM,
+ 0, 0, 0, 0, 0, 0,
+ pkey_ecx_keygen,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ pkey_ecd_ctrl,
+ 0,
+ pkey_ecd_digestsign,
+ pkey_ecd_digestverify
+};