diff options
Diffstat (limited to 'main/openssl/crypto/ecdsa')
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecdsa.h | 3 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecdsatest.c | 89 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecs_err.c | 5 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecs_lib.c | 32 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecs_locl.h | 13 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecs_ossl.c | 43 | ||||
| -rw-r--r-- | main/openssl/crypto/ecdsa/ecs_sign.c | 10 |
7 files changed, 170 insertions, 25 deletions
diff --git a/main/openssl/crypto/ecdsa/ecdsa.h b/main/openssl/crypto/ecdsa/ecdsa.h index e61c5398..dc6a36b1 100644 --- a/main/openssl/crypto/ecdsa/ecdsa.h +++ b/main/openssl/crypto/ecdsa/ecdsa.h @@ -238,6 +238,7 @@ void ERR_load_ECDSA_strings(void); /* Error codes for the ECDSA functions. */ /* Function codes. */ +#define ECDSA_F_ECDSA_CHECK 104 #define ECDSA_F_ECDSA_DATA_NEW_METHOD 100 #define ECDSA_F_ECDSA_DO_SIGN 101 #define ECDSA_F_ECDSA_DO_VERIFY 102 @@ -249,6 +250,8 @@ void ERR_load_ECDSA_strings(void); #define ECDSA_R_ERR_EC_LIB 102 #define ECDSA_R_MISSING_PARAMETERS 103 #define ECDSA_R_NEED_NEW_SETUP_VALUES 106 +#define ECDSA_R_NONCE_CANNOT_BE_PRECOMPUTED 108 +#define ECDSA_R_NON_FIPS_METHOD 107 #define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104 #define ECDSA_R_SIGNATURE_MALLOC_FAILED 105 diff --git a/main/openssl/crypto/ecdsa/ecdsatest.c b/main/openssl/crypto/ecdsa/ecdsatest.c index 26a4a9ee..537bb303 100644 --- a/main/openssl/crypto/ecdsa/ecdsatest.c +++ b/main/openssl/crypto/ecdsa/ecdsatest.c @@ -262,6 +262,7 @@ int x9_62_tests(BIO *out) "3238135532097973577080787768312505059318910517550078427819" "78505179448783")) goto x962_err; +#ifndef OPENSSL_NO_EC2M if (!x9_62_test_internal(out, NID_X9_62_c2tnb191v1, "87194383164871543355722284926904419997237591535066528048", "308992691965804947361541664549085895292153777025772063598")) @@ -272,7 +273,7 @@ int x9_62_tests(BIO *out) "1970303740007316867383349976549972270528498040721988191026" "49413465737174")) goto x962_err; - +#endif ret = 1; x962_err: if (!restore_rand()) @@ -286,9 +287,13 @@ int test_builtin(BIO *out) size_t crv_len = 0, n = 0; EC_KEY *eckey = NULL, *wrong_eckey = NULL; EC_GROUP *group; + ECDSA_SIG *ecdsa_sig = NULL; unsigned char digest[20], wrong_digest[20]; - unsigned char *signature = NULL; - unsigned int sig_len; + unsigned char *signature = NULL; + const unsigned char *sig_ptr; + unsigned char *sig_ptr2; + unsigned char *raw_buf = NULL; + unsigned int sig_len, degree, r_len, s_len, bn_len, buf_len; int nid, ret = 0; /* fill digest values with some random data */ @@ -338,7 +343,8 @@ int test_builtin(BIO *out) if (EC_KEY_set_group(eckey, group) == 0) goto builtin_err; EC_GROUP_free(group); - if (EC_GROUP_get_degree(EC_KEY_get0_group(eckey)) < 160) + degree = EC_GROUP_get_degree(EC_KEY_get0_group(eckey)); + if (degree < 160) /* drop the curve */ { EC_KEY_free(eckey); @@ -414,26 +420,89 @@ int test_builtin(BIO *out) } BIO_printf(out, "."); (void)BIO_flush(out); - /* modify a single byte of the signature */ - offset = signature[10] % sig_len; - dirt = signature[11]; - signature[offset] ^= dirt ? dirt : 1; + /* wrong length */ + if (ECDSA_verify(0, digest, 20, signature, sig_len - 1, + eckey) == 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + + /* Modify a single byte of the signature: to ensure we don't + * garble the ASN1 structure, we read the raw signature and + * modify a byte in one of the bignums directly. */ + sig_ptr = signature; + if ((ecdsa_sig = d2i_ECDSA_SIG(NULL, &sig_ptr, sig_len)) == NULL) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + + /* Store the two BIGNUMs in raw_buf. */ + r_len = BN_num_bytes(ecdsa_sig->r); + s_len = BN_num_bytes(ecdsa_sig->s); + bn_len = (degree + 7) / 8; + if ((r_len > bn_len) || (s_len > bn_len)) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + buf_len = 2 * bn_len; + if ((raw_buf = OPENSSL_malloc(buf_len)) == NULL) + goto builtin_err; + /* Pad the bignums with leading zeroes. */ + memset(raw_buf, 0, buf_len); + BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len); + BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len); + + /* Modify a single byte in the buffer. */ + offset = raw_buf[10] % buf_len; + dirt = raw_buf[11] ? raw_buf[11] : 1; + raw_buf[offset] ^= dirt; + /* Now read the BIGNUMs back in from raw_buf. */ + if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) || + (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL)) + goto builtin_err; + + sig_ptr2 = signature; + sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2); if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1) { BIO_printf(out, " failed\n"); goto builtin_err; } + /* Sanity check: undo the modification and verify signature. */ + raw_buf[offset] ^= dirt; + if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) || + (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL)) + goto builtin_err; + + sig_ptr2 = signature; + sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2); + if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } BIO_printf(out, "."); (void)BIO_flush(out); BIO_printf(out, " ok\n"); /* cleanup */ + /* clean bogus errors */ + ERR_clear_error(); OPENSSL_free(signature); signature = NULL; EC_KEY_free(eckey); eckey = NULL; EC_KEY_free(wrong_eckey); wrong_eckey = NULL; + ECDSA_SIG_free(ecdsa_sig); + ecdsa_sig = NULL; + OPENSSL_free(raw_buf); + raw_buf = NULL; } ret = 1; @@ -442,8 +511,12 @@ builtin_err: EC_KEY_free(eckey); if (wrong_eckey) EC_KEY_free(wrong_eckey); + if (ecdsa_sig) + ECDSA_SIG_free(ecdsa_sig); if (signature) OPENSSL_free(signature); + if (raw_buf) + OPENSSL_free(raw_buf); if (curves) OPENSSL_free(curves); diff --git a/main/openssl/crypto/ecdsa/ecs_err.c b/main/openssl/crypto/ecdsa/ecs_err.c index 98e38d53..7406c6d8 100644 --- a/main/openssl/crypto/ecdsa/ecs_err.c +++ b/main/openssl/crypto/ecdsa/ecs_err.c @@ -1,6 +1,6 @@ /* crypto/ecdsa/ecs_err.c */ /* ==================================================================== - * Copyright (c) 1999-2006 The OpenSSL Project. All rights reserved. + * Copyright (c) 1999-2011 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 @@ -70,6 +70,7 @@ static ERR_STRING_DATA ECDSA_str_functs[]= { +{ERR_FUNC(ECDSA_F_ECDSA_CHECK), "ECDSA_CHECK"}, {ERR_FUNC(ECDSA_F_ECDSA_DATA_NEW_METHOD), "ECDSA_DATA_NEW_METHOD"}, {ERR_FUNC(ECDSA_F_ECDSA_DO_SIGN), "ECDSA_do_sign"}, {ERR_FUNC(ECDSA_F_ECDSA_DO_VERIFY), "ECDSA_do_verify"}, @@ -84,6 +85,8 @@ static ERR_STRING_DATA ECDSA_str_reasons[]= {ERR_REASON(ECDSA_R_ERR_EC_LIB) ,"err ec lib"}, {ERR_REASON(ECDSA_R_MISSING_PARAMETERS) ,"missing parameters"}, {ERR_REASON(ECDSA_R_NEED_NEW_SETUP_VALUES),"need new setup values"}, +{ERR_REASON(ECDSA_R_NONCE_CANNOT_BE_PRECOMPUTED),"nonce cannot be precomputed"}, +{ERR_REASON(ECDSA_R_NON_FIPS_METHOD) ,"non fips method"}, {ERR_REASON(ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED),"random number generation failed"}, {ERR_REASON(ECDSA_R_SIGNATURE_MALLOC_FAILED),"signature malloc failed"}, {0,NULL} diff --git a/main/openssl/crypto/ecdsa/ecs_lib.c b/main/openssl/crypto/ecdsa/ecs_lib.c index 2ebae3aa..814a6bf4 100644 --- a/main/openssl/crypto/ecdsa/ecs_lib.c +++ b/main/openssl/crypto/ecdsa/ecs_lib.c @@ -60,6 +60,9 @@ #endif #include <openssl/err.h> #include <openssl/bn.h> +#ifdef OPENSSL_FIPS +#include <openssl/fips.h> +#endif const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT; @@ -77,7 +80,16 @@ void ECDSA_set_default_method(const ECDSA_METHOD *meth) const ECDSA_METHOD *ECDSA_get_default_method(void) { if(!default_ECDSA_method) + { +#ifdef OPENSSL_FIPS + if (FIPS_mode()) + return FIPS_ecdsa_openssl(); + else + return ECDSA_OpenSSL(); +#else default_ECDSA_method = ECDSA_OpenSSL(); +#endif + } return default_ECDSA_method; } @@ -188,12 +200,26 @@ ECDSA_DATA *ecdsa_check(EC_KEY *key) ecdsa_data = (ECDSA_DATA *)ecdsa_data_new(); if (ecdsa_data == NULL) return NULL; - EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, - ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); + data = EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, + ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); + if (data != NULL) + { + /* Another thread raced us to install the key_method + * data and won. */ + ecdsa_data_free(ecdsa_data); + ecdsa_data = (ECDSA_DATA *)data; + } } else ecdsa_data = (ECDSA_DATA *)data; - +#ifdef OPENSSL_FIPS + if (FIPS_mode() && !(ecdsa_data->flags & ECDSA_FLAG_FIPS_METHOD) + && !(EC_KEY_get_flags(key) & EC_FLAG_NON_FIPS_ALLOW)) + { + ECDSAerr(ECDSA_F_ECDSA_CHECK, ECDSA_R_NON_FIPS_METHOD); + return NULL; + } +#endif return ecdsa_data; } diff --git a/main/openssl/crypto/ecdsa/ecs_locl.h b/main/openssl/crypto/ecdsa/ecs_locl.h index 3a69a840..46f7ad91 100644 --- a/main/openssl/crypto/ecdsa/ecs_locl.h +++ b/main/openssl/crypto/ecdsa/ecs_locl.h @@ -70,8 +70,9 @@ struct ecdsa_method const char *name; ECDSA_SIG *(*ecdsa_do_sign)(const unsigned char *dgst, int dgst_len, const BIGNUM *inv, const BIGNUM *rp, EC_KEY *eckey); - int (*ecdsa_sign_setup)(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, - BIGNUM **r); + int (*ecdsa_sign_setup)(EC_KEY *eckey, BN_CTX *ctx, + BIGNUM **kinv, BIGNUM **r, + const unsigned char *dgst, int dlen); int (*ecdsa_do_verify)(const unsigned char *dgst, int dgst_len, const ECDSA_SIG *sig, EC_KEY *eckey); #if 0 @@ -82,6 +83,14 @@ struct ecdsa_method char *app_data; }; +/* If this flag is set the ECDSA method is FIPS compliant and can be used + * in FIPS mode. This is set in the validated module method. If an + * application sets this flag in its own methods it is its responsibility + * to ensure the result is compliant. + */ + +#define ECDSA_FLAG_FIPS_METHOD 0x1 + typedef struct ecdsa_data_st { /* EC_KEY_METH_DATA part */ int (*init)(EC_KEY *); diff --git a/main/openssl/crypto/ecdsa/ecs_ossl.c b/main/openssl/crypto/ecdsa/ecs_ossl.c index 1bbf328d..325aca8c 100644 --- a/main/openssl/crypto/ecdsa/ecs_ossl.c +++ b/main/openssl/crypto/ecdsa/ecs_ossl.c @@ -60,11 +60,13 @@ #include <openssl/err.h> #include <openssl/obj_mac.h> #include <openssl/bn.h> +#include <openssl/rand.h> static ECDSA_SIG *ecdsa_do_sign(const unsigned char *dgst, int dlen, const BIGNUM *, const BIGNUM *, EC_KEY *eckey); -static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, - BIGNUM **rp); +static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, + BIGNUM **kinvp, BIGNUM **rp, + const unsigned char *dgst, int dlen); static int ecdsa_do_verify(const unsigned char *dgst, int dgst_len, const ECDSA_SIG *sig, EC_KEY *eckey); @@ -86,8 +88,9 @@ const ECDSA_METHOD *ECDSA_OpenSSL(void) return &openssl_ecdsa_meth; } -static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, - BIGNUM **rp) +static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, + BIGNUM **kinvp, BIGNUM **rp, + const unsigned char *dgst, int dlen) { BN_CTX *ctx = NULL; BIGNUM *k = NULL, *r = NULL, *order = NULL, *X = NULL; @@ -136,11 +139,28 @@ static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, { /* get random k */ do - if (!BN_rand_range(k, order)) +#ifndef OPENSSL_NO_SHA512 + if (EC_KEY_get_nonce_from_hash(eckey)) { - ECDSAerr(ECDSA_F_ECDSA_SIGN_SETUP, - ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED); - goto err; + if (!BN_generate_dsa_nonce( + k, order, + EC_KEY_get0_private_key(eckey), + dgst, dlen, ctx)) + { + ECDSAerr(ECDSA_F_ECDSA_SIGN_SETUP, + ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED); + goto err; + } + } + else +#endif + { + if (!BN_rand_range(k, order)) + { + ECDSAerr(ECDSA_F_ECDSA_SIGN_SETUP, + ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED); + goto err; + } } while (BN_is_zero(k)); @@ -167,6 +187,7 @@ static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, goto err; } } +#ifndef OPENSSL_NO_EC2M else /* NID_X9_62_characteristic_two_field */ { if (!EC_POINT_get_affine_coordinates_GF2m(group, @@ -176,6 +197,7 @@ static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, goto err; } } +#endif if (!BN_nnmod(r, X, order, ctx)) { ECDSAerr(ECDSA_F_ECDSA_SIGN_SETUP, ERR_R_BN_LIB); @@ -280,7 +302,7 @@ static ECDSA_SIG *ecdsa_do_sign(const unsigned char *dgst, int dgst_len, { if (in_kinv == NULL || in_r == NULL) { - if (!ECDSA_sign_setup(eckey, ctx, &kinv, &ret->r)) + if (!ecdsa->meth->ecdsa_sign_setup(eckey, ctx, &kinv, &ret->r, dgst, dgst_len)) { ECDSAerr(ECDSA_F_ECDSA_DO_SIGN,ERR_R_ECDSA_LIB); goto err; @@ -454,6 +476,7 @@ static int ecdsa_do_verify(const unsigned char *dgst, int dgst_len, goto err; } } +#ifndef OPENSSL_NO_EC2M else /* NID_X9_62_characteristic_two_field */ { if (!EC_POINT_get_affine_coordinates_GF2m(group, @@ -463,7 +486,7 @@ static int ecdsa_do_verify(const unsigned char *dgst, int dgst_len, goto err; } } - +#endif if (!BN_nnmod(u1, X, order, ctx)) { ECDSAerr(ECDSA_F_ECDSA_DO_VERIFY, ERR_R_BN_LIB); diff --git a/main/openssl/crypto/ecdsa/ecs_sign.c b/main/openssl/crypto/ecdsa/ecs_sign.c index 353d5af5..ea79a24b 100644 --- a/main/openssl/crypto/ecdsa/ecs_sign.c +++ b/main/openssl/crypto/ecdsa/ecs_sign.c @@ -58,6 +58,7 @@ #include <openssl/engine.h> #endif #include <openssl/rand.h> +#include <openssl/err.h> ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey) { @@ -102,5 +103,12 @@ int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, ECDSA_DATA *ecdsa = ecdsa_check(eckey); if (ecdsa == NULL) return 0; - return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp); + if (EC_KEY_get_nonce_from_hash(eckey)) + { + /* You cannot precompute the ECDSA nonce if it is required to + * depend on the message. */ + ECDSAerr(ECDSA_F_ECDSA_SIGN_SETUP, ECDSA_R_NONCE_CANNOT_BE_PRECOMPUTED); + return 0; + } + return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp, NULL, 0); } |