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curve25519: Small libgcrypt bignum fix

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* src/curve25519.c (ssh_client_curve25519_init): Make use of the
gcrypt-variant of 'bignum_bin2bn'.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Justus Winter
2016-05-02 16:00:22 +02:00
committed by Andreas Schneider
parent 67ffe26dea
commit 85bcfab719
1 changed files with 7 additions and 0 deletions
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7
src/curve25519.c
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@@ -71,11 +71,14 @@ int ssh_client_curve25519_init(ssh_session session){
static int ssh_curve25519_build_k(ssh_session session) {
ssh_curve25519_pubkey k;
#ifdef HAVE_LIBCRYPTO
session->next_crypto->k = bignum_new();
if (session->next_crypto->k == NULL) {
return SSH_ERROR;
}
#endif
if (session->server)
crypto_scalarmult(k, session->next_crypto->curve25519_privkey,
@@ -84,7 +87,11 @@ static int ssh_curve25519_build_k(ssh_session session) {
crypto_scalarmult(k, session->next_crypto->curve25519_privkey,
session->next_crypto->curve25519_server_pubkey);
#ifdef HAVE_LIBGCRYPT
bignum_bin2bn(k, CURVE25519_PUBKEY_SIZE, &session->next_crypto->k);
#elif defined HAVE_LIBCRYPTO
bignum_bin2bn(k, CURVE25519_PUBKEY_SIZE, session->next_crypto->k);
#endif
#ifdef DEBUG_CRYPTO
ssh_print_hexa("Session server cookie",