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tcos: allow correct input length when signing 

For 2048 bit keys the padded input is 256 bytes long.

Fixes https://github.com/frankmorgner/OpenSCToken/issues/20
This commit is contained in:
Julian Strobl 2019-12-17 18:57:54 +01:00 committed by Frank Morgner
parent 55b7a6fefd
commit 187d908feb
1 changed files with 2 additions and 1 deletions
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3
src/libopensc/card-tcos.c
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@ -549,7 +549,8 @@ static int tcos_compute_signature(sc_card_t *card, const u8 * data, size_t datal
assert(card != NULL && data != NULL && out != NULL);
tcos3=(card->type==SC_CARD_TYPE_TCOS_V3);
if (datalen > 255) SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_VERBOSE, SC_ERROR_INVALID_ARGUMENTS);
// We can sign (key length / 8) bytes
if (datalen > 256) SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_VERBOSE, SC_ERROR_INVALID_ARGUMENTS);
if(((tcos_data *)card->drv_data)->next_sign){
if(datalen>48){