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-rw-r--r--crypto/ec/ec_pmeth.c491
1 files changed, 238 insertions, 253 deletions
diff --git a/crypto/ec/ec_pmeth.c b/crypto/ec/ec_pmeth.c
index b62b532cf869..c189d3ffbf2a 100644
--- a/crypto/ec/ec_pmeth.c
+++ b/crypto/ec/ec_pmeth.c
@@ -1,5 +1,6 @@
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2006.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
*/
/* ====================================================================
* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
@@ -9,7 +10,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
@@ -66,282 +67,266 @@
/* EC pkey context structure */
-typedef struct
- {
- /* Key and paramgen group */
- EC_GROUP *gen_group;
- /* message digest */
- const EVP_MD *md;
- } EC_PKEY_CTX;
+typedef struct {
+ /* Key and paramgen group */
+ EC_GROUP *gen_group;
+ /* message digest */
+ const EVP_MD *md;
+} EC_PKEY_CTX;
static int pkey_ec_init(EVP_PKEY_CTX *ctx)
- {
- EC_PKEY_CTX *dctx;
- dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
- if (!dctx)
- return 0;
- dctx->gen_group = NULL;
- dctx->md = NULL;
+{
+ EC_PKEY_CTX *dctx;
+ dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
+ if (!dctx)
+ return 0;
+ dctx->gen_group = NULL;
+ dctx->md = NULL;
- ctx->data = dctx;
+ ctx->data = dctx;
- return 1;
- }
+ return 1;
+}
static int pkey_ec_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
- {
- EC_PKEY_CTX *dctx, *sctx;
- if (!pkey_ec_init(dst))
- return 0;
- sctx = src->data;
- dctx = dst->data;
- if (sctx->gen_group)
- {
- dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
- if (!dctx->gen_group)
- return 0;
- }
- dctx->md = sctx->md;
- return 1;
- }
+{
+ EC_PKEY_CTX *dctx, *sctx;
+ if (!pkey_ec_init(dst))
+ return 0;
+ sctx = src->data;
+ dctx = dst->data;
+ if (sctx->gen_group) {
+ dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
+ if (!dctx->gen_group)
+ return 0;
+ }
+ dctx->md = sctx->md;
+ return 1;
+}
static void pkey_ec_cleanup(EVP_PKEY_CTX *ctx)
- {
- EC_PKEY_CTX *dctx = ctx->data;
- if (dctx)
- {
- if (dctx->gen_group)
- EC_GROUP_free(dctx->gen_group);
- OPENSSL_free(dctx);
- }
- }
+{
+ EC_PKEY_CTX *dctx = ctx->data;
+ if (dctx) {
+ if (dctx->gen_group)
+ EC_GROUP_free(dctx->gen_group);
+ OPENSSL_free(dctx);
+ }
+}
static int pkey_ec_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
- const unsigned char *tbs, size_t tbslen)
- {
- int ret, type;
- unsigned int sltmp;
- EC_PKEY_CTX *dctx = ctx->data;
- EC_KEY *ec = ctx->pkey->pkey.ec;
-
- if (!sig)
- {
- *siglen = ECDSA_size(ec);
- return 1;
- }
- else if(*siglen < (size_t)ECDSA_size(ec))
- {
- ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- if (dctx->md)
- type = EVP_MD_type(dctx->md);
- else
- type = NID_sha1;
-
-
- ret = ECDSA_sign(type, tbs, tbslen, sig, &sltmp, ec);
-
- if (ret <= 0)
- return ret;
- *siglen = (size_t)sltmp;
- return 1;
- }
+ const unsigned char *tbs, size_t tbslen)
+{
+ int ret, type;
+ unsigned int sltmp;
+ EC_PKEY_CTX *dctx = ctx->data;
+ EC_KEY *ec = ctx->pkey->pkey.ec;
+
+ if (!sig) {
+ *siglen = ECDSA_size(ec);
+ return 1;
+ } else if (*siglen < (size_t)ECDSA_size(ec)) {
+ ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
+ return 0;
+ }
+
+ if (dctx->md)
+ type = EVP_MD_type(dctx->md);
+ else
+ type = NID_sha1;
+
+ ret = ECDSA_sign(type, tbs, tbslen, sig, &sltmp, ec);
+
+ if (ret <= 0)
+ return ret;
+ *siglen = (size_t)sltmp;
+ return 1;
+}
static int pkey_ec_verify(EVP_PKEY_CTX *ctx,
- const unsigned char *sig, size_t siglen,
- const unsigned char *tbs, size_t tbslen)
- {
- int ret, type;
- EC_PKEY_CTX *dctx = ctx->data;
- EC_KEY *ec = ctx->pkey->pkey.ec;
+ const unsigned char *sig, size_t siglen,
+ const unsigned char *tbs, size_t tbslen)
+{
+ int ret, type;
+ EC_PKEY_CTX *dctx = ctx->data;
+ EC_KEY *ec = ctx->pkey->pkey.ec;
- if (dctx->md)
- type = EVP_MD_type(dctx->md);
- else
- type = NID_sha1;
+ if (dctx->md)
+ type = EVP_MD_type(dctx->md);
+ else
+ type = NID_sha1;
- ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
+ ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
- return ret;
- }
+ return ret;
+}
#ifndef OPENSSL_NO_ECDH
-static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
- {
- int ret;
- size_t outlen;
- const EC_POINT *pubkey = NULL;
- if (!ctx->pkey || !ctx->peerkey)
- {
- ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
- return 0;
- }
-
- if (!key)
- {
- const EC_GROUP *group;
- group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
- *keylen = (EC_GROUP_get_degree(group) + 7)/8;
- return 1;
- }
-
- pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
-
- /* NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
- * not an error, the result is truncated.
- */
-
- outlen = *keylen;
-
- ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0);
- if (ret < 0)
- return ret;
- *keylen = ret;
- return 1;
- }
+static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
+ size_t *keylen)
+{
+ int ret;
+ size_t outlen;
+ const EC_POINT *pubkey = NULL;
+ if (!ctx->pkey || !ctx->peerkey) {
+ ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
+ return 0;
+ }
+
+ if (!key) {
+ const EC_GROUP *group;
+ group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
+ *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
+ return 1;
+ }
+
+ pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
+
+ /*
+ * NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is not
+ * an error, the result is truncated.
+ */
+
+ outlen = *keylen;
+
+ ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0);
+ if (ret < 0)
+ return ret;
+ *keylen = ret;
+ return 1;
+}
#endif
static int pkey_ec_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
- {
- EC_PKEY_CTX *dctx = ctx->data;
- EC_GROUP *group;
- switch (type)
- {
- case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
- group = EC_GROUP_new_by_curve_name(p1);
- if (group == NULL)
- {
- ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
- return 0;
- }
- if (dctx->gen_group)
- EC_GROUP_free(dctx->gen_group);
- dctx->gen_group = group;
- return 1;
-
- case EVP_PKEY_CTRL_MD:
- if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
- EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
- EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
- EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
- EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
- EVP_MD_type((const EVP_MD *)p2) != NID_sha512)
- {
- ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
- return 0;
- }
- dctx->md = p2;
- return 1;
-
- case EVP_PKEY_CTRL_PEER_KEY:
- /* Default behaviour is OK */
- case EVP_PKEY_CTRL_DIGESTINIT:
- case EVP_PKEY_CTRL_PKCS7_SIGN:
- case EVP_PKEY_CTRL_CMS_SIGN:
- return 1;
-
- default:
- return -2;
-
- }
- }
-
+{
+ EC_PKEY_CTX *dctx = ctx->data;
+ EC_GROUP *group;
+ switch (type) {
+ case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
+ group = EC_GROUP_new_by_curve_name(p1);
+ if (group == NULL) {
+ ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
+ return 0;
+ }
+ if (dctx->gen_group)
+ EC_GROUP_free(dctx->gen_group);
+ dctx->gen_group = group;
+ return 1;
+
+ case EVP_PKEY_CTRL_MD:
+ if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
+ EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
+ EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
+ EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
+ EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
+ EVP_MD_type((const EVP_MD *)p2) != NID_sha512) {
+ ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
+ return 0;
+ }
+ dctx->md = p2;
+ return 1;
+
+ case EVP_PKEY_CTRL_PEER_KEY:
+ /* Default behaviour is OK */
+ case EVP_PKEY_CTRL_DIGESTINIT:
+ case EVP_PKEY_CTRL_PKCS7_SIGN:
+ case EVP_PKEY_CTRL_CMS_SIGN:
+ return 1;
+
+ default:
+ return -2;
+
+ }
+}
+
static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
- {
- if (!strcmp(type, "ec_paramgen_curve"))
- {
- int nid;
- nid = OBJ_sn2nid(value);
- if (nid == NID_undef)
- nid = OBJ_ln2nid(value);
- if (nid == NID_undef)
- {
- ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
- return 0;
- }
- return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
- }
- return -2;
- }
+ const char *type, const char *value)
+{
+ if (!strcmp(type, "ec_paramgen_curve")) {
+ int nid;
+ nid = OBJ_sn2nid(value);
+ if (nid == NID_undef)
+ nid = OBJ_ln2nid(value);
+ if (nid == NID_undef) {
+ ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
+ return 0;
+ }
+ return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
+ }
+ return -2;
+}
static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- EC_KEY *ec = NULL;
- EC_PKEY_CTX *dctx = ctx->data;
- int ret = 0;
- if (dctx->gen_group == NULL)
- {
- ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
- return 0;
- }
- ec = EC_KEY_new();
- if (!ec)
- return 0;
- ret = EC_KEY_set_group(ec, dctx->gen_group);
- if (ret)
- EVP_PKEY_assign_EC_KEY(pkey, ec);
- else
- EC_KEY_free(ec);
- return ret;
- }
+{
+ EC_KEY *ec = NULL;
+ EC_PKEY_CTX *dctx = ctx->data;
+ int ret = 0;
+ if (dctx->gen_group == NULL) {
+ ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
+ return 0;
+ }
+ ec = EC_KEY_new();
+ if (!ec)
+ return 0;
+ ret = EC_KEY_set_group(ec, dctx->gen_group);
+ if (ret)
+ EVP_PKEY_assign_EC_KEY(pkey, ec);
+ else
+ EC_KEY_free(ec);
+ return ret;
+}
static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- EC_KEY *ec = NULL;
- if (ctx->pkey == NULL)
- {
- ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
- return 0;
- }
- ec = EC_KEY_new();
- if (!ec)
- return 0;
- EVP_PKEY_assign_EC_KEY(pkey, ec);
- /* Note: if error return, pkey is freed by parent routine */
- if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
- return 0;
- return EC_KEY_generate_key(pkey->pkey.ec);
- }
-
-const EVP_PKEY_METHOD ec_pkey_meth =
- {
- EVP_PKEY_EC,
- 0,
- pkey_ec_init,
- pkey_ec_copy,
- pkey_ec_cleanup,
-
- 0,
- pkey_ec_paramgen,
-
- 0,
- pkey_ec_keygen,
-
- 0,
- pkey_ec_sign,
-
- 0,
- pkey_ec_verify,
-
- 0,0,
-
- 0,0,0,0,
-
- 0,0,
-
- 0,0,
-
- 0,
+{
+ EC_KEY *ec = NULL;
+ if (ctx->pkey == NULL) {
+ ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
+ return 0;
+ }
+ ec = EC_KEY_new();
+ if (!ec)
+ return 0;
+ EVP_PKEY_assign_EC_KEY(pkey, ec);
+ /* Note: if error return, pkey is freed by parent routine */
+ if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+ return 0;
+ return EC_KEY_generate_key(pkey->pkey.ec);
+}
+
+const EVP_PKEY_METHOD ec_pkey_meth = {
+ EVP_PKEY_EC,
+ 0,
+ pkey_ec_init,
+ pkey_ec_copy,
+ pkey_ec_cleanup,
+
+ 0,
+ pkey_ec_paramgen,
+
+ 0,
+ pkey_ec_keygen,
+
+ 0,
+ pkey_ec_sign,
+
+ 0,
+ pkey_ec_verify,
+
+ 0, 0,
+
+ 0, 0, 0, 0,
+
+ 0, 0,
+
+ 0, 0,
+
+ 0,
#ifndef OPENSSL_NO_ECDH
- pkey_ec_derive,
+ pkey_ec_derive,
#else
- 0,
+ 0,
#endif
- pkey_ec_ctrl,
- pkey_ec_ctrl_str
-
- };
+ pkey_ec_ctrl,
+ pkey_ec_ctrl_str
+};