diff options
Diffstat (limited to 'openssl/crypto/dh/dh_ameth.c')
| -rw-r--r-- | openssl/crypto/dh/dh_ameth.c | 783 |
1 files changed, 387 insertions, 396 deletions
diff --git a/openssl/crypto/dh/dh_ameth.c b/openssl/crypto/dh/dh_ameth.c index 02ec2d47b..1dec10983 100644 --- a/openssl/crypto/dh/dh_ameth.c +++ b/openssl/crypto/dh/dh_ameth.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 @@ -64,438 +65,428 @@ #include "asn1_locl.h" static void int_dh_free(EVP_PKEY *pkey) - { - DH_free(pkey->pkey.dh); - } +{ + DH_free(pkey->pkey.dh); +} static int dh_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) - { - const unsigned char *p, *pm; - int pklen, pmlen; - int ptype; - void *pval; - ASN1_STRING *pstr; - X509_ALGOR *palg; - ASN1_INTEGER *public_key = NULL; - - DH *dh = NULL; - - if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) - return 0; - X509_ALGOR_get0(NULL, &ptype, &pval, palg); - - if (ptype != V_ASN1_SEQUENCE) - { - DHerr(DH_F_DH_PUB_DECODE, DH_R_PARAMETER_ENCODING_ERROR); - goto err; - } - - pstr = pval; - pm = pstr->data; - pmlen = pstr->length; - - if (!(dh = d2i_DHparams(NULL, &pm, pmlen))) - { - DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR); - goto err; - } - - if (!(public_key=d2i_ASN1_INTEGER(NULL, &p, pklen))) - { - DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR); - goto err; - } - - /* We have parameters now set public key */ - if (!(dh->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) - { - DHerr(DH_F_DH_PUB_DECODE, DH_R_BN_DECODE_ERROR); - goto err; - } - - ASN1_INTEGER_free(public_key); - EVP_PKEY_assign_DH(pkey, dh); - return 1; - - err: - if (public_key) - ASN1_INTEGER_free(public_key); - if (dh) - DH_free(dh); - return 0; - - } - -static int dh_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) - { - DH *dh; - void *pval = NULL; - int ptype; - unsigned char *penc = NULL; - int penclen; - ASN1_STRING *str; - ASN1_INTEGER *pub_key = NULL; - - dh=pkey->pkey.dh; - - str = ASN1_STRING_new(); - str->length = i2d_DHparams(dh, &str->data); - if (str->length <= 0) - { - DHerr(DH_F_DH_PUB_ENCODE, ERR_R_MALLOC_FAILURE); - goto err; - } - pval = str; - ptype = V_ASN1_SEQUENCE; - - pub_key = BN_to_ASN1_INTEGER(dh->pub_key, NULL); - if (!pub_key) - goto err; - - penclen = i2d_ASN1_INTEGER(pub_key, &penc); - - ASN1_INTEGER_free(pub_key); - - if (penclen <= 0) - { - DHerr(DH_F_DH_PUB_ENCODE, ERR_R_MALLOC_FAILURE); - goto err; - } - - if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DH), - ptype, pval, penc, penclen)) - return 1; - - err: - if (penc) - OPENSSL_free(penc); - if (pval) - ASN1_STRING_free(pval); - - return 0; - } - - -/* PKCS#8 DH is defined in PKCS#11 of all places. It is similar to DH in - * that the AlgorithmIdentifier contains the paramaters, the private key - * is explcitly included and the pubkey must be recalculated. - */ - -static int dh_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) - { - const unsigned char *p, *pm; - int pklen, pmlen; - int ptype; - void *pval; - ASN1_STRING *pstr; - X509_ALGOR *palg; - ASN1_INTEGER *privkey = NULL; - - DH *dh = NULL; - - if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) - return 0; - - X509_ALGOR_get0(NULL, &ptype, &pval, palg); - - if (ptype != V_ASN1_SEQUENCE) - goto decerr; - - if (!(privkey=d2i_ASN1_INTEGER(NULL, &p, pklen))) - goto decerr; - - - pstr = pval; - pm = pstr->data; - pmlen = pstr->length; - if (!(dh = d2i_DHparams(NULL, &pm, pmlen))) - goto decerr; - /* We have parameters now set private key */ - if (!(dh->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) - { - DHerr(DH_F_DH_PRIV_DECODE,DH_R_BN_ERROR); - goto dherr; - } - /* Calculate public key */ - if (!DH_generate_key(dh)) - goto dherr; +{ + const unsigned char *p, *pm; + int pklen, pmlen; + int ptype; + void *pval; + ASN1_STRING *pstr; + X509_ALGOR *palg; + ASN1_INTEGER *public_key = NULL; + + DH *dh = NULL; + + if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) + return 0; + X509_ALGOR_get0(NULL, &ptype, &pval, palg); + + if (ptype != V_ASN1_SEQUENCE) { + DHerr(DH_F_DH_PUB_DECODE, DH_R_PARAMETER_ENCODING_ERROR); + goto err; + } + + pstr = pval; + pm = pstr->data; + pmlen = pstr->length; + + if (!(dh = d2i_DHparams(NULL, &pm, pmlen))) { + DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR); + goto err; + } + + if (!(public_key = d2i_ASN1_INTEGER(NULL, &p, pklen))) { + DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR); + goto err; + } + + /* We have parameters now set public key */ + if (!(dh->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) { + DHerr(DH_F_DH_PUB_DECODE, DH_R_BN_DECODE_ERROR); + goto err; + } + + ASN1_INTEGER_free(public_key); + EVP_PKEY_assign_DH(pkey, dh); + return 1; + + err: + if (public_key) + ASN1_INTEGER_free(public_key); + if (dh) + DH_free(dh); + return 0; - EVP_PKEY_assign_DH(pkey, dh); +} - ASN1_INTEGER_free(privkey); +static int dh_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) +{ + DH *dh; + int ptype; + unsigned char *penc = NULL; + int penclen; + ASN1_STRING *str; + ASN1_INTEGER *pub_key = NULL; + + dh = pkey->pkey.dh; + + str = ASN1_STRING_new(); + if(!str) { + DHerr(DH_F_DH_PUB_ENCODE, ERR_R_MALLOC_FAILURE); + goto err; + } + str->length = i2d_DHparams(dh, &str->data); + if (str->length <= 0) { + DHerr(DH_F_DH_PUB_ENCODE, ERR_R_MALLOC_FAILURE); + goto err; + } + ptype = V_ASN1_SEQUENCE; + + pub_key = BN_to_ASN1_INTEGER(dh->pub_key, NULL); + if (!pub_key) + goto err; + + penclen = i2d_ASN1_INTEGER(pub_key, &penc); + + ASN1_INTEGER_free(pub_key); + + if (penclen <= 0) { + DHerr(DH_F_DH_PUB_ENCODE, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DH), + ptype, str, penc, penclen)) + return 1; + + err: + if (penc) + OPENSSL_free(penc); + if (str) + ASN1_STRING_free(str); + + return 0; +} - return 1; +/* + * PKCS#8 DH is defined in PKCS#11 of all places. It is similar to DH in that + * the AlgorithmIdentifier contains the paramaters, the private key is + * explcitly included and the pubkey must be recalculated. + */ - decerr: - DHerr(DH_F_DH_PRIV_DECODE, EVP_R_DECODE_ERROR); - dherr: - DH_free(dh); - return 0; - } +static int dh_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) +{ + const unsigned char *p, *pm; + int pklen, pmlen; + int ptype; + void *pval; + ASN1_STRING *pstr; + X509_ALGOR *palg; + ASN1_INTEGER *privkey = NULL; + + DH *dh = NULL; + + if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) + return 0; + + X509_ALGOR_get0(NULL, &ptype, &pval, palg); + + if (ptype != V_ASN1_SEQUENCE) + goto decerr; + + if (!(privkey = d2i_ASN1_INTEGER(NULL, &p, pklen))) + goto decerr; + + pstr = pval; + pm = pstr->data; + pmlen = pstr->length; + if (!(dh = d2i_DHparams(NULL, &pm, pmlen))) + goto decerr; + /* We have parameters now set private key */ + if (!(dh->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) { + DHerr(DH_F_DH_PRIV_DECODE, DH_R_BN_ERROR); + goto dherr; + } + /* Calculate public key */ + if (!DH_generate_key(dh)) + goto dherr; + + EVP_PKEY_assign_DH(pkey, dh); + + ASN1_STRING_clear_free(privkey); + + return 1; + + decerr: + DHerr(DH_F_DH_PRIV_DECODE, EVP_R_DECODE_ERROR); + dherr: + DH_free(dh); + ASN1_STRING_clear_free(privkey); + return 0; +} static int dh_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) { - ASN1_STRING *params = NULL; - ASN1_INTEGER *prkey = NULL; - unsigned char *dp = NULL; - int dplen; - - params = ASN1_STRING_new(); - - if (!params) - { - DHerr(DH_F_DH_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); - goto err; - } - - params->length = i2d_DHparams(pkey->pkey.dh, ¶ms->data); - if (params->length <= 0) - { - DHerr(DH_F_DH_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); - goto err; - } - params->type = V_ASN1_SEQUENCE; - - /* Get private key into integer */ - prkey = BN_to_ASN1_INTEGER(pkey->pkey.dh->priv_key, NULL); - - if (!prkey) - { - DHerr(DH_F_DH_PRIV_ENCODE,DH_R_BN_ERROR); - goto err; - } - - dplen = i2d_ASN1_INTEGER(prkey, &dp); - - ASN1_INTEGER_free(prkey); - - if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dhKeyAgreement), 0, - V_ASN1_SEQUENCE, params, dp, dplen)) - goto err; - - return 1; - -err: - if (dp != NULL) - OPENSSL_free(dp); - if (params != NULL) - ASN1_STRING_free(params); - if (prkey != NULL) - ASN1_INTEGER_free(prkey); - return 0; + ASN1_STRING *params = NULL; + ASN1_INTEGER *prkey = NULL; + unsigned char *dp = NULL; + int dplen; + + params = ASN1_STRING_new(); + + if (!params) { + DHerr(DH_F_DH_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); + goto err; + } + + params->length = i2d_DHparams(pkey->pkey.dh, ¶ms->data); + if (params->length <= 0) { + DHerr(DH_F_DH_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); + goto err; + } + params->type = V_ASN1_SEQUENCE; + + /* Get private key into integer */ + prkey = BN_to_ASN1_INTEGER(pkey->pkey.dh->priv_key, NULL); + + if (!prkey) { + DHerr(DH_F_DH_PRIV_ENCODE, DH_R_BN_ERROR); + goto err; + } + + dplen = i2d_ASN1_INTEGER(prkey, &dp); + + ASN1_STRING_clear_free(prkey); + prkey = NULL; + + if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dhKeyAgreement), 0, + V_ASN1_SEQUENCE, params, dp, dplen)) + goto err; + + return 1; + + err: + if (dp != NULL) + OPENSSL_free(dp); + if (params != NULL) + ASN1_STRING_free(params); + if (prkey != NULL) + ASN1_STRING_clear_free(prkey); + return 0; } - static void update_buflen(const BIGNUM *b, size_t *pbuflen) - { - size_t i; - if (!b) - return; - if (*pbuflen < (i = (size_t)BN_num_bytes(b))) - *pbuflen = i; - } +{ + size_t i; + if (!b) + return; + if (*pbuflen < (i = (size_t)BN_num_bytes(b))) + *pbuflen = i; +} static int dh_param_decode(EVP_PKEY *pkey, - const unsigned char **pder, int derlen) - { - DH *dh; - if (!(dh = d2i_DHparams(NULL, pder, derlen))) - { - DHerr(DH_F_DH_PARAM_DECODE, ERR_R_DH_LIB); - return 0; - } - EVP_PKEY_assign_DH(pkey, dh); - return 1; - } + const unsigned char **pder, int derlen) +{ + DH *dh; + if (!(dh = d2i_DHparams(NULL, pder, derlen))) { + DHerr(DH_F_DH_PARAM_DECODE, ERR_R_DH_LIB); + return 0; + } + EVP_PKEY_assign_DH(pkey, dh); + return 1; +} static int dh_param_encode(const EVP_PKEY *pkey, unsigned char **pder) - { - return i2d_DHparams(pkey->pkey.dh, pder); - } +{ + return i2d_DHparams(pkey->pkey.dh, pder); +} static int do_dh_print(BIO *bp, const DH *x, int indent, - ASN1_PCTX *ctx, int ptype) - { - unsigned char *m=NULL; - int reason=ERR_R_BUF_LIB,ret=0; - size_t buf_len=0; - - const char *ktype = NULL; - - BIGNUM *priv_key, *pub_key; - - if (ptype == 2) - priv_key = x->priv_key; - else - priv_key = NULL; - - if (ptype > 0) - pub_key = x->pub_key; - else - pub_key = NULL; - - update_buflen(x->p, &buf_len); - - if (buf_len == 0) - { - reason = ERR_R_PASSED_NULL_PARAMETER; - goto err; - } - - update_buflen(x->g, &buf_len); - update_buflen(pub_key, &buf_len); - update_buflen(priv_key, &buf_len); - - if (ptype == 2) - ktype = "PKCS#3 DH Private-Key"; - else if (ptype == 1) - ktype = "PKCS#3 DH Public-Key"; - else - ktype = "PKCS#3 DH Parameters"; - - m= OPENSSL_malloc(buf_len+10); - if (m == NULL) - { - reason=ERR_R_MALLOC_FAILURE; - goto err; - } - - BIO_indent(bp, indent, 128); - if (BIO_printf(bp,"%s: (%d bit)\n", ktype, BN_num_bits(x->p)) <= 0) - goto err; - indent += 4; - - if (!ASN1_bn_print(bp,"private-key:",priv_key,m,indent)) goto err; - if (!ASN1_bn_print(bp,"public-key:",pub_key,m,indent)) goto err; - - if (!ASN1_bn_print(bp,"prime:",x->p,m,indent)) goto err; - if (!ASN1_bn_print(bp,"generator:",x->g,m,indent)) goto err; - if (x->length != 0) - { - BIO_indent(bp, indent, 128); - if (BIO_printf(bp,"recommended-private-length: %d bits\n", - (int)x->length) <= 0) goto err; - } - - - ret=1; - if (0) - { -err: - DHerr(DH_F_DO_DH_PRINT,reason); - } - if (m != NULL) OPENSSL_free(m); - return(ret); - } + ASN1_PCTX *ctx, int ptype) +{ + unsigned char *m = NULL; + int reason = ERR_R_BUF_LIB, ret = 0; + size_t buf_len = 0; + + const char *ktype = NULL; + + BIGNUM *priv_key, *pub_key; + + if (ptype == 2) + priv_key = x->priv_key; + else + priv_key = NULL; + + if (ptype > 0) + pub_key = x->pub_key; + else + pub_key = NULL; + + update_buflen(x->p, &buf_len); + + if (buf_len == 0) { + reason = ERR_R_PASSED_NULL_PARAMETER; + goto err; + } + + update_buflen(x->g, &buf_len); + update_buflen(pub_key, &buf_len); + update_buflen(priv_key, &buf_len); + + if (ptype == 2) + ktype = "PKCS#3 DH Private-Key"; + else if (ptype == 1) + ktype = "PKCS#3 DH Public-Key"; + else + ktype = "PKCS#3 DH Parameters"; + + m = OPENSSL_malloc(buf_len + 10); + if (m == NULL) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + + BIO_indent(bp, indent, 128); + if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) <= 0) + goto err; + indent += 4; + + if (!ASN1_bn_print(bp, "private-key:", priv_key, m, indent)) + goto err; + if (!ASN1_bn_print(bp, "public-key:", pub_key, m, indent)) + goto err; + + if (!ASN1_bn_print(bp, "prime:", x->p, m, indent)) + goto err; + if (!ASN1_bn_print(bp, "generator:", x->g, m, indent)) + goto err; + if (x->length != 0) { + BIO_indent(bp, indent, 128); + if (BIO_printf(bp, "recommended-private-length: %d bits\n", + (int)x->length) <= 0) + goto err; + } + + ret = 1; + if (0) { + err: + DHerr(DH_F_DO_DH_PRINT, reason); + } + if (m != NULL) + OPENSSL_free(m); + return (ret); +} static int int_dh_size(const EVP_PKEY *pkey) - { - return(DH_size(pkey->pkey.dh)); - } +{ + return (DH_size(pkey->pkey.dh)); +} static int dh_bits(const EVP_PKEY *pkey) - { - return BN_num_bits(pkey->pkey.dh->p); - } +{ + return BN_num_bits(pkey->pkey.dh->p); +} static int dh_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) - { - if ( BN_cmp(a->pkey.dh->p,b->pkey.dh->p) || - BN_cmp(a->pkey.dh->g,b->pkey.dh->g)) - return 0; - else - return 1; - } +{ + if (BN_cmp(a->pkey.dh->p, b->pkey.dh->p) || + BN_cmp(a->pkey.dh->g, b->pkey.dh->g)) + return 0; + else + return 1; +} static int dh_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) - { - BIGNUM *a; +{ + BIGNUM *a; - if ((a=BN_dup(from->pkey.dh->p)) == NULL) - return 0; - if (to->pkey.dh->p != NULL) - BN_free(to->pkey.dh->p); - to->pkey.dh->p=a; + if ((a = BN_dup(from->pkey.dh->p)) == NULL) + return 0; + if (to->pkey.dh->p != NULL) + BN_free(to->pkey.dh->p); + to->pkey.dh->p = a; - if ((a=BN_dup(from->pkey.dh->g)) == NULL) - return 0; - if (to->pkey.dh->g != NULL) - BN_free(to->pkey.dh->g); - to->pkey.dh->g=a; + if ((a = BN_dup(from->pkey.dh->g)) == NULL) + return 0; + if (to->pkey.dh->g != NULL) + BN_free(to->pkey.dh->g); + to->pkey.dh->g = a; - return 1; - } + return 1; +} static int dh_missing_parameters(const EVP_PKEY *a) - { - if (!a->pkey.dh->p || !a->pkey.dh->g) - return 1; - return 0; - } +{ + if (!a->pkey.dh->p || !a->pkey.dh->g) + return 1; + return 0; +} static int dh_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) - { - if (dh_cmp_parameters(a, b) == 0) - return 0; - if (BN_cmp(b->pkey.dh->pub_key,a->pkey.dh->pub_key) != 0) - return 0; - else - return 1; - } +{ + if (dh_cmp_parameters(a, b) == 0) + return 0; + if (BN_cmp(b->pkey.dh->pub_key, a->pkey.dh->pub_key) != 0) + return 0; + else + return 1; +} static int dh_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, - ASN1_PCTX *ctx) - { - return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 0); - } + ASN1_PCTX *ctx) +{ + return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 0); +} static int dh_public_print(BIO *bp, const EVP_PKEY *pkey, int indent, - ASN1_PCTX *ctx) - { - return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 1); - } + ASN1_PCTX *ctx) +{ + return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 1); +} static int dh_private_print(BIO *bp, const EVP_PKEY *pkey, int indent, - ASN1_PCTX *ctx) - { - return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 2); - } + ASN1_PCTX *ctx) +{ + return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 2); +} int DHparams_print(BIO *bp, const DH *x) - { - return do_dh_print(bp, x, 4, NULL, 0); - } - -const EVP_PKEY_ASN1_METHOD dh_asn1_meth = - { - EVP_PKEY_DH, - EVP_PKEY_DH, - 0, - - "DH", - "OpenSSL PKCS#3 DH method", - - dh_pub_decode, - dh_pub_encode, - dh_pub_cmp, - dh_public_print, - - dh_priv_decode, - dh_priv_encode, - dh_private_print, - - int_dh_size, - dh_bits, - - dh_param_decode, - dh_param_encode, - dh_missing_parameters, - dh_copy_parameters, - dh_cmp_parameters, - dh_param_print, - 0, - - int_dh_free, - 0 - }; +{ + return do_dh_print(bp, x, 4, NULL, 0); +} +const EVP_PKEY_ASN1_METHOD dh_asn1_meth = { + EVP_PKEY_DH, + EVP_PKEY_DH, + 0, + + "DH", + "OpenSSL PKCS#3 DH method", + + dh_pub_decode, + dh_pub_encode, + dh_pub_cmp, + dh_public_print, + + dh_priv_decode, + dh_priv_encode, + dh_private_print, + + int_dh_size, + dh_bits, + + dh_param_decode, + dh_param_encode, + dh_missing_parameters, + dh_copy_parameters, + dh_cmp_parameters, + dh_param_print, + 0, + + int_dh_free, + 0 +}; |