diff options
| -rw-r--r-- | CHANGES | 3 | ||||
| -rw-r--r-- | crypto/ec/Makefile | 4 | ||||
| -rw-r--r-- | crypto/ec/ec.h | 17 | ||||
| -rw-r--r-- | crypto/ec/ec_err.c | 10 | ||||
| -rw-r--r-- | crypto/ec/ec_pmeth.c | 315 | ||||
| -rw-r--r-- | crypto/evp/pmeth_lib.c | 5 |
6 files changed, 350 insertions, 4 deletions
@@ -4,6 +4,9 @@ Changes between 0.9.8a and 0.9.9 [xx XXX xxxx] + *) Add provisional EC pkey method with support for ECDSA and ECDH. + [Steve Henson] + *) Add support for key derivation (agreement) in the API, DH method and pkeyutl. [Steve Henson] diff --git a/crypto/ec/Makefile b/crypto/ec/Makefile index be7454a..bae5f6f 100644 --- a/crypto/ec/Makefile +++ b/crypto/ec/Makefile @@ -19,11 +19,11 @@ APPS= LIB=$(TOP)/libcrypto.a LIBSRC= ec_lib.c ecp_smpl.c ecp_mont.c ecp_nist.c ec_cvt.c ec_mult.c\ ec_err.c ec_curve.c ec_check.c ec_print.c ec_asn1.c ec_key.c\ - ec2_smpl.c ec2_mult.c ec_ameth.c eck_prn.c + ec2_smpl.c ec2_mult.c ec_ameth.c ec_pmeth.c eck_prn.c LIBOBJ= ec_lib.o ecp_smpl.o ecp_mont.o ecp_nist.o ec_cvt.o ec_mult.o\ ec_err.o ec_curve.o ec_check.o ec_print.o ec_asn1.o ec_key.o\ - ec2_smpl.o ec2_mult.o ec_ameth.o eck_prn.o + ec2_smpl.o ec2_mult.o ec_ameth.o ec_pmeth.o eck_prn.o SRC= $(LIBSRC) diff --git a/crypto/ec/ec.h b/crypto/ec/ec.h index b937f64..2852d65 100644 --- a/crypto/ec/ec.h +++ b/crypto/ec/ec.h @@ -905,6 +905,13 @@ int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); # endif #endif +#define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, EVP_PKEY_OP_PARAMGEN, \ + EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL) + + +#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1) + /* BEGIN ERROR CODES */ /* The following lines are auto generated by the script mkerr.pl. Any changes * made after this point may be overwritten when the script is next run. @@ -1028,6 +1035,12 @@ void ERR_load_EC_strings(void); #define EC_F_I2D_ECPRIVATEKEY 192 #define EC_F_I2O_ECPUBLICKEY 151 #define EC_F_O2I_ECPUBLICKEY 152 +#define EC_F_PKEY_EC_CTRL 197 +#define EC_F_PKEY_EC_CTRL_STR 198 +#define EC_F_PKEY_EC_DERIVE 217 +#define EC_F_PKEY_EC_KEYGEN 199 +#define EC_F_PKEY_EC_PARAMGEN 219 +#define EC_F_PKEY_EC_SIGN 218 /* Reason codes. */ #define EC_R_ASN1_ERROR 115 @@ -1043,11 +1056,14 @@ void ERR_load_EC_strings(void); #define EC_R_INVALID_ARGUMENT 112 #define EC_R_INVALID_COMPRESSED_POINT 110 #define EC_R_INVALID_COMPRESSION_BIT 109 +#define EC_R_INVALID_CURVE 132 +#define EC_R_INVALID_DIGEST_TYPE 138 #define EC_R_INVALID_ENCODING 102 #define EC_R_INVALID_FIELD 103 #define EC_R_INVALID_FORM 104 #define EC_R_INVALID_GROUP_ORDER 122 #define EC_R_INVALID_PRIVATE_KEY 123 +#define EC_R_KEYS_NOT_SET 140 #define EC_R_MISSING_PARAMETERS 124 #define EC_R_MISSING_PRIVATE_KEY 125 #define EC_R_NOT_A_NIST_PRIME 135 @@ -1055,6 +1071,7 @@ void ERR_load_EC_strings(void); #define EC_R_NOT_IMPLEMENTED 126 #define EC_R_NOT_INITIALIZED 111 #define EC_R_NO_FIELD_MOD 133 +#define EC_R_NO_PARAMETERS_SET 139 #define EC_R_PASSED_NULL_PARAMETER 134 #define EC_R_PKPARAMETERS2GROUP_FAILURE 127 #define EC_R_POINT_AT_INFINITY 106 diff --git a/crypto/ec/ec_err.c b/crypto/ec/ec_err.c index 78dbf48..a414d9e 100644 --- a/crypto/ec/ec_err.c +++ b/crypto/ec/ec_err.c @@ -184,6 +184,12 @@ static ERR_STRING_DATA EC_str_functs[]= {ERR_FUNC(EC_F_I2D_ECPRIVATEKEY), "i2d_ECPrivateKey"}, {ERR_FUNC(EC_F_I2O_ECPUBLICKEY), "i2o_ECPublicKey"}, {ERR_FUNC(EC_F_O2I_ECPUBLICKEY), "o2i_ECPublicKey"}, +{ERR_FUNC(EC_F_PKEY_EC_CTRL), "PKEY_EC_CTRL"}, +{ERR_FUNC(EC_F_PKEY_EC_CTRL_STR), "PKEY_EC_CTRL_STR"}, +{ERR_FUNC(EC_F_PKEY_EC_DERIVE), "PKEY_EC_DERIVE"}, +{ERR_FUNC(EC_F_PKEY_EC_KEYGEN), "PKEY_EC_KEYGEN"}, +{ERR_FUNC(EC_F_PKEY_EC_PARAMGEN), "PKEY_EC_PARAMGEN"}, +{ERR_FUNC(EC_F_PKEY_EC_SIGN), "PKEY_EC_SIGN"}, {0,NULL} }; @@ -202,11 +208,14 @@ static ERR_STRING_DATA EC_str_reasons[]= {ERR_REASON(EC_R_INVALID_ARGUMENT) ,"invalid argument"}, {ERR_REASON(EC_R_INVALID_COMPRESSED_POINT),"invalid compressed point"}, {ERR_REASON(EC_R_INVALID_COMPRESSION_BIT),"invalid compression bit"}, +{ERR_REASON(EC_R_INVALID_CURVE) ,"invalid curve"}, +{ERR_REASON(EC_R_INVALID_DIGEST_TYPE) ,"invalid digest type"}, {ERR_REASON(EC_R_INVALID_ENCODING) ,"invalid encoding"}, {ERR_REASON(EC_R_INVALID_FIELD) ,"invalid field"}, {ERR_REASON(EC_R_INVALID_FORM) ,"invalid form"}, {ERR_REASON(EC_R_INVALID_GROUP_ORDER) ,"invalid group order"}, {ERR_REASON(EC_R_INVALID_PRIVATE_KEY) ,"invalid private key"}, +{ERR_REASON(EC_R_KEYS_NOT_SET) ,"keys not set"}, {ERR_REASON(EC_R_MISSING_PARAMETERS) ,"missing parameters"}, {ERR_REASON(EC_R_MISSING_PRIVATE_KEY) ,"missing private key"}, {ERR_REASON(EC_R_NOT_A_NIST_PRIME) ,"not a NIST prime"}, @@ -214,6 +223,7 @@ static ERR_STRING_DATA EC_str_reasons[]= {ERR_REASON(EC_R_NOT_IMPLEMENTED) ,"not implemented"}, {ERR_REASON(EC_R_NOT_INITIALIZED) ,"not initialized"}, {ERR_REASON(EC_R_NO_FIELD_MOD) ,"no field mod"}, +{ERR_REASON(EC_R_NO_PARAMETERS_SET) ,"no parameters set"}, {ERR_REASON(EC_R_PASSED_NULL_PARAMETER) ,"passed null parameter"}, {ERR_REASON(EC_R_PKPARAMETERS2GROUP_FAILURE),"pkparameters2group failure"}, {ERR_REASON(EC_R_POINT_AT_INFINITY) ,"point at infinity"}, diff --git a/crypto/ec/ec_pmeth.c b/crypto/ec/ec_pmeth.c new file mode 100644 index 0000000..f6a027e --- /dev/null +++ b/crypto/ec/ec_pmeth.c @@ -0,0 +1,315 @@ +/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL + * project 2006. + */ +/* ==================================================================== + * Copyright (c) 2006 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * 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 + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/asn1t.h> +#include <openssl/x509.h> +#include <openssl/ec.h> +#include <openssl/ecdsa.h> +#include <openssl/evp.h> +#include "evp_locl.h" + +/* EC pkey context structure */ + +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; + + ctx->data = dctx; + + 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); + } + } + +static int pkey_ec_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen, + const unsigned char *tbs, int 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 < 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 = sltmp; + return 1; + } + +static int pkey_ec_verify(EVP_PKEY_CTX *ctx, + const unsigned char *sig, int siglen, + const unsigned char *tbs, int 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; + + ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec); + + return ret; + } + +static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, int *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 PKS#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_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) + { + 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 */ + 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; + } + +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; + } + +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_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, + pkey_ec_derive, + + pkey_ec_ctrl, + pkey_ec_ctrl_str + + }; diff --git a/crypto/evp/pmeth_lib.c b/crypto/evp/pmeth_lib.c index ae3baea..d68972c 100644 --- a/crypto/evp/pmeth_lib.c +++ b/crypto/evp/pmeth_lib.c @@ -67,13 +67,14 @@ typedef int sk_cmp_fn_type(const char * const *a, const char * const *b); STACK *app_pkey_methods = NULL; -extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth; +extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth, ec_pkey_meth; static const EVP_PKEY_METHOD *standard_methods[] = { &rsa_pkey_meth, &dh_pkey_meth, - &dsa_pkey_meth + &dsa_pkey_meth, + &ec_pkey_meth }; static int pmeth_cmp(const EVP_PKEY_METHOD * const *a, |