diff options
Diffstat (limited to 'deps/openssl/openssl/crypto/dh/dh_asn1.c')
-rw-r--r-- | deps/openssl/openssl/crypto/dh/dh_asn1.c | 98 |
1 files changed, 96 insertions, 2 deletions
diff --git a/deps/openssl/openssl/crypto/dh/dh_asn1.c b/deps/openssl/openssl/crypto/dh/dh_asn1.c index e6ee3cfc66..f470214399 100644 --- a/deps/openssl/openssl/crypto/dh/dh_asn1.c +++ b/deps/openssl/openssl/crypto/dh/dh_asn1.c @@ -89,7 +89,101 @@ ASN1_SEQUENCE_cb(DHparams, dh_cb) = { IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DH, DHparams, DHparams) -DH *DHparams_dup(DH *dh) +/* + * Internal only structures for handling X9.42 DH: this gets translated to or + * from a DH structure straight away. + */ + +typedef struct { + ASN1_BIT_STRING *seed; + BIGNUM *counter; +} int_dhvparams; + +typedef struct { + BIGNUM *p; + BIGNUM *q; + BIGNUM *g; + BIGNUM *j; + int_dhvparams *vparams; +} int_dhx942_dh; + +ASN1_SEQUENCE(DHvparams) = { + ASN1_SIMPLE(int_dhvparams, seed, ASN1_BIT_STRING), + ASN1_SIMPLE(int_dhvparams, counter, BIGNUM) +} ASN1_SEQUENCE_END_name(int_dhvparams, DHvparams) + +ASN1_SEQUENCE(DHxparams) = { + ASN1_SIMPLE(int_dhx942_dh, p, BIGNUM), + ASN1_SIMPLE(int_dhx942_dh, g, BIGNUM), + ASN1_SIMPLE(int_dhx942_dh, q, BIGNUM), + ASN1_OPT(int_dhx942_dh, j, BIGNUM), + ASN1_OPT(int_dhx942_dh, vparams, DHvparams), +} ASN1_SEQUENCE_END_name(int_dhx942_dh, DHxparams) + +int_dhx942_dh *d2i_int_dhx(int_dhx942_dh **a, + const unsigned char **pp, long length); +int i2d_int_dhx(const int_dhx942_dh *a, unsigned char **pp); + +IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(int_dhx942_dh, DHxparams, int_dhx) + +/* Application leve function: read in X9.42 DH parameters into DH structure */ + +DH *d2i_DHxparams(DH **a, const unsigned char **pp, long length) { - return ASN1_item_dup(ASN1_ITEM_rptr(DHparams), dh); + int_dhx942_dh *dhx = NULL; + DH *dh = NULL; + dh = DH_new(); + if (!dh) + return NULL; + dhx = d2i_int_dhx(NULL, pp, length); + if (!dhx) { + DH_free(dh); + return NULL; + } + + if (a) { + if (*a) + DH_free(*a); + *a = dh; + } + + dh->p = dhx->p; + dh->q = dhx->q; + dh->g = dhx->g; + dh->j = dhx->j; + + if (dhx->vparams) { + dh->seed = dhx->vparams->seed->data; + dh->seedlen = dhx->vparams->seed->length; + dh->counter = dhx->vparams->counter; + dhx->vparams->seed->data = NULL; + ASN1_BIT_STRING_free(dhx->vparams->seed); + OPENSSL_free(dhx->vparams); + dhx->vparams = NULL; + } + + OPENSSL_free(dhx); + return dh; +} + +int i2d_DHxparams(const DH *dh, unsigned char **pp) +{ + int_dhx942_dh dhx; + int_dhvparams dhv; + ASN1_BIT_STRING bs; + dhx.p = dh->p; + dhx.g = dh->g; + dhx.q = dh->q; + dhx.j = dh->j; + if (dh->counter && dh->seed && dh->seedlen > 0) { + bs.flags = ASN1_STRING_FLAG_BITS_LEFT; + bs.data = dh->seed; + bs.length = dh->seedlen; + dhv.seed = &bs; + dhv.counter = dh->counter; + dhx.vparams = &dhv; + } else + dhx.vparams = NULL; + + return i2d_int_dhx(&dhx, pp); } |