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Fix SM verification for long messages.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2024-01-02 01:57:55 +01:00
parent a2bc4b6be9
commit b4f71beaf0
1 changed files with 2 additions and 2 deletions
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4
src/eac.c
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@@ -229,7 +229,7 @@ void sm_update_iv() {
} }
int sm_verify() { int sm_verify() {
uint8_t input[1024]; uint8_t input[4096];
memset(input, 0, sizeof(input)); memset(input, 0, sizeof(input));
uint16_t input_len = 0; uint16_t input_len = 0;
int r = 0; int r = 0;
@@ -238,7 +238,7 @@ int sm_verify() {
if (data_len % sm_blocksize) { if (data_len % sm_blocksize) {
data_len += sm_blocksize; data_len += sm_blocksize;
} }
if (data_len + (add_header ? sm_blocksize : 0) > 1024) { if (data_len + (add_header ? sm_blocksize : 0) > 4096) {
return CCID_WRONG_LENGTH; return CCID_WRONG_LENGTH;
} }
mbedtls_mpi ssc; mbedtls_mpi ssc;