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Add ecdh_read_params().

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This commit is contained in:
Manuel Pégourié-Gonnard
2013-02-11 20:28:55 +01:00
parent 13724765b2
commit 854fbd7ba2
4 changed files with 73 additions and 9 deletions
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31
library/ecdh.c
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@ -104,16 +104,16 @@ void ecdh_free( ecdh_context *ctx )
}
/*
* Setup and write the ServerKeyExhange parameters
* Setup and write the ServerKeyExhange parameters (RFC 4492)
* struct {
* ECParameters curve_params;
* ECPoint public;
* } ServerECDHParams;
*/
int ecdh_make_server_params( ecdh_context *ctx, size_t *olen,
unsigned char *buf, size_t blen,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
int ecdh_make_params( ecdh_context *ctx, size_t *olen,
unsigned char *buf, size_t blen,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{
int ret;
size_t grp_len, pt_len;
@ -137,6 +137,27 @@ int ecdh_make_server_params( ecdh_context *ctx, size_t *olen,
return 0;
}
/*
* Read the ServerKeyExhange parameters (RFC 4492)
* struct {
* ECParameters curve_params;
* ECPoint public;
* } ServerECDHParams;
*/
int ecdh_read_params( ecdh_context *ctx,
const unsigned char **buf, const unsigned char *end )
{
int ret;
if( ( ret = ecp_tls_read_group( &ctx->grp, buf, end - *buf ) ) != 0 )
return( ret );
if( ( ret = ecp_tls_read_point( &ctx->grp, &ctx->Qp, buf, end - *buf ) )
!= 0 )
return( ret );
return 0;
}
#if defined(POLARSSL_SELF_TEST)