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core: fixed client random size

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client random must be (bitlen / 8) + 8 - see [MS-RDPBCGR] 5.3.4.1

fixes #1771
This commit is contained in:
Bernhard Miklautz 2014-04-08 19:38:01 +02:00
parent 5aa64a08b0
commit 3720e205b4
1 changed files with 5 additions and 1 deletions
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6
libfreerdp/core/connection.c
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@ -421,7 +421,11 @@ static BOOL rdp_client_establish_keys(rdpRdp* rdp)
key_len = rdp->settings->RdpServerCertificate->cert_info.ModulusLength;
mod = rdp->settings->RdpServerCertificate->cert_info.Modulus;
exp = rdp->settings->RdpServerCertificate->cert_info.exponent;
crypt_client_random = calloc(1,key_len);
/*
* client random must be (bitlen / 8) + 8 - see [MS-RDPBCGR] 5.3.4.1
* for details
*/
crypt_client_random = calloc(1,key_len+8);
if (!crypt_client_random)
return FALSE;
crypto_rsa_public_encrypt(rdp->settings->ClientRandom, CLIENT_RANDOM_LENGTH, key_len, mod, exp, crypt_client_random);