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add ecc_ctx_reset() so user can reuse ctx w/o init/free

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This commit is contained in:
toddouska
2014-03-25 12:48:25 -07:00
parent 43c6ae3691
commit b6fc109c1d
2 changed files with 16 additions and 4 deletions
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18
ctaocrypt/src/ecc.c
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@ -3658,17 +3658,27 @@ static void ecc_ctx_init(ecEncCtx* ctx, int flags)
} }
/* allow ecc context reset so user doesn't have to init/free for resue */
int ecc_ctx_reset(ecEncCtx* ctx, RNG* rng)
{
if (ctx == NULL || rng == NULL)
return BAD_FUNC_ARG;
ecc_ctx_init(ctx, ctx->protocol);
return ecc_ctx_set_salt(ctx, ctx->protocol, rng);
}
/* alloc/init and set defaults, return new Context */ /* alloc/init and set defaults, return new Context */
ecEncCtx* ecc_ctx_new(int flags, RNG* rng) ecEncCtx* ecc_ctx_new(int flags, RNG* rng)
{ {
int ret = 0; int ret = 0;
ecEncCtx* ctx = (ecEncCtx*)XMALLOC(sizeof(ecEncCtx), 0, DYNAMIC_TYPE_ECC); ecEncCtx* ctx = (ecEncCtx*)XMALLOC(sizeof(ecEncCtx), 0, DYNAMIC_TYPE_ECC);
ecc_ctx_init(ctx, flags); if (ctx)
ctx->protocol = (byte)flags;
if (ctx && flags)
ret = ecc_ctx_set_salt(ctx, flags, rng);
ret = ecc_ctx_reset(ctx, rng);
if (ret != 0) { if (ret != 0) {
ecc_ctx_free(ctx); ecc_ctx_free(ctx);
ctx = NULL; ctx = NULL;

2
cyassl/ctaocrypt/ecc.h
View File

@ -157,6 +157,8 @@ CYASSL_API
ecEncCtx* ecc_ctx_new(int flags, RNG* rng); ecEncCtx* ecc_ctx_new(int flags, RNG* rng);
CYASSL_API CYASSL_API
void ecc_ctx_free(ecEncCtx*); void ecc_ctx_free(ecEncCtx*);
CYASSL_API
int ecc_ctx_reset(ecEncCtx*, RNG*); /* reset for use again w/o alloc/free */
CYASSL_API CYASSL_API
const byte* ecc_ctx_get_own_salt(ecEncCtx*); const byte* ecc_ctx_get_own_salt(ecEncCtx*);