src/usr.bin/ssh/auth-rsa.c - diff

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Diff for /src/usr.bin/ssh/Attic/auth-rsa.c between version 1.17 and 1.18

version 1.17, 2000/01/18 09:41:05

version 1.18, 2000/02/11 10:59:11

Line 62

int

auth_rsa_challenge_dialog(BIGNUM *e, BIGNUM *n)

{

BIGNUM *challenge, *encrypted_challenge, *aux;

BIGNUM *challenge, *encrypted_challenge;

RSA *pk;

BN_CTX *ctx = BN_CTX_new();

BN_CTX *ctx;

unsigned char buf[32], mdbuf[16], response[16];

MD5_CTX md;

unsigned int i;

Line 72

encrypted_challenge = BN_new();

challenge = BN_new();

aux = BN_new();

/* Generate a random challenge. */

BN_rand(challenge, 256, 0, 0);

ctx = BN_CTX_new();

BN_mod(challenge, challenge, n, ctx);

BN_CTX_free(ctx);

/* Create the public key data structure. */

pk = RSA_new();

Line 93

Line 94

packet_start(SSH_SMSG_AUTH_RSA_CHALLENGE);

packet_put_bignum(encrypted_challenge);

packet_send();

BN_clear_free(encrypted_challenge);

packet_write_wait();

/* Wait for a response. */

packet_read_expect(&plen, SSH_CMSG_AUTH_RSA_RESPONSE);

packet_integrity_check(plen, 16, SSH_CMSG_AUTH_RSA_RESPONSE);

for (i = 0; i < 16; i++)

response[i] = packet_get_char();

/* The response is MD5 of decrypted challenge plus session id. */

len = BN_num_bytes(challenge);

if (len <= 0 || len > 32)

Line 105

Line 113

MD5_Update(&md, buf, 32);

MD5_Update(&md, session_id, 16);

MD5_Final(mdbuf, &md);

/* We will no longer need these. */

BN_clear_free(encrypted_challenge);

BN_clear_free(challenge);

BN_clear_free(aux);