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Removed alloca

master
Tom Cocagne 2010-11-29 14:59:11 -05:00
parent c9db82906d
commit 62bead607a
1 changed files with 8 additions and 5 deletions
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13
srp.c
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@ -33,7 +33,6 @@
#include <sys/time.h>
#endif
#include <alloca.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@ -252,10 +251,11 @@ static BIGNUM * H_nn( SRP_HashAlgorithm alg, const BIGNUM * n1, const BIGNUM * n
int len_n1 = BN_num_bytes(n1);
int len_n2 = BN_num_bytes(n2);
int nbytes = len_n1 + len_n2;
unsigned char * bin = (unsigned char *) alloca( nbytes );
unsigned char * bin = (unsigned char *) malloc( nbytes );
BN_bn2bin(n1, bin);
BN_bn2bin(n2, bin + len_n1);
hash( alg, bin, nbytes, buff );
free(bin);
return BN_bin2bn(buff, hash_length(alg), NULL);
}
@ -264,10 +264,11 @@ static BIGNUM * H_ns( SRP_HashAlgorithm alg, const BIGNUM * n, const unsigned ch
unsigned char buff[ SHA512_DIGEST_LENGTH ];
int len_n = BN_num_bytes(n);
int nbytes = len_n + len_bytes;
unsigned char * bin = (unsigned char *) alloca( nbytes );
unsigned char * bin = (unsigned char *) malloc( nbytes );
BN_bn2bin(n, bin);
memcpy( bin + len_n, bytes, len_bytes );
hash( alg, bin, nbytes, buff );
free(bin);
return BN_bin2bn(buff, hash_length(alg), NULL);
}
@ -290,17 +291,19 @@ static BIGNUM * calculate_x( SRP_HashAlgorithm alg, const BIGNUM * salt, const c
static void update_hash_n( SRP_HashAlgorithm alg, HashCTX *ctx, const BIGNUM * n )
{
unsigned long len = BN_num_bytes(n);
unsigned char * n_bytes = (unsigned char *) alloca( len );
unsigned char * n_bytes = (unsigned char *) malloc( len );
BN_bn2bin(n, n_bytes);
hash_update(alg, ctx, n_bytes, len);
free(n_bytes);
}
static void hash_num( SRP_HashAlgorithm alg, const BIGNUM * n, unsigned char * dest )
{
int nbytes = BN_num_bytes(n);
unsigned char * bin = (unsigned char *) alloca( nbytes );
unsigned char * bin = (unsigned char *) malloc( nbytes );
BN_bn2bin(n, bin);
hash( alg, bin, nbytes, dest );
free(bin);
}
static void calculate_M( SRP_HashAlgorithm alg, NGConstant *ng, unsigned char * dest, const char * I, const BIGNUM * s,